Given
coefficient of kinetic Friction μ(k) = 0.1
Initial speed u = 3.6
Friction is present so it tries to stop to the object and stops it completely after moving certain displacement let say s
maximum deceleration provided by friction is
a(max) = μ(k) * g
= 0.1 * 3.6
using equation of motion
v² - u² = 2as
where,
v = final velocity
u = initial velocity
a = acceleration
s = displacement
(0)² - (3.6)² = 2 * (-0.36) * s
s = 18 m
Therefore, the displacement will be 18 m
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To outside observers at rest, the overall sizes of objects traveling at relativistic speeds are.
The overall sizes of objects moving at relativistic speeds are smaller to observers outside the system who are at rest.
What is relativistic speeds?Relativistic speed is the rate at which relativistic effects are important for achieving the appropriate level of measurement precision for the event under study. The differences between values calculated by models that take relativity into account and those that do not are known as relativistic effects. This is approximately 186,282 miles per second, or "c," the equational symbol for light speed. Albert Einstein's special relativity theory, which is the cornerstone of much modern physics, states that nothing about the universe could move faster than light.
How do you calculate relativistic speed and is relativistic speed faster than light?Ek=mc21(v/c)2)mc2 is a formula for relativistic kinetic energy, where mm stands for rest mass, v for velocity, and c for the speed of light.
General Relativity, an idea first proposed by Albert Einstein, provides the basis for modern physics' understanding of spacetime. According to General Relativity, time and space are intertwined and nothing can move faster than the speed of light.
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Do paper plates absorb heat?.
Thin paper plates are more likely to absorb heat and could potentially catch fire.
Heat is the transfer of kinetic energy from one medium or item to any other, or from a power source to a medium or item. Such heat transfer can arise in 3 methods: radiation, conduction, and convection.
Heat is used to make things heat, to boil water and fry eggs, and to melt metallic to construct cars. Warmness is used to generate electricity at a thermal strength plant for our everyday lives.
Here are just a few of your many picks for heating strength sources: natural gas, propane (LP), oil, coal, wood, electricity, warmth pumps, floor source warmth pumps, and solar energy.
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the figure(figure 1) shows the interference pattern on a screen 1.0 m behind an 720 line/mm diffraction grating.
The figure shows an interference pattern with a series of alternating light and dark bands.
What is interference?
The result of two or more waves colliding is interference. Depending on how the peaks and troughs of the overlapping waves line up, they may add up or may partially or completely cancel one another. According to the definition of interference, it is described as the phenomenon in which a number of waves combine to create a new wave that has a bigger, smaller, or the same amplitude. The medium adopts a shape as a result of the net impact of the two individual waves due to wave interference. Let's use the case of two pulses with the same amplitude moving in opposite directions through the same medium to better understand.
The dark bands, or fringes, represent the areas where the light waves from the diffraction grating have been cancelled out due to destructive interference. The bands appear to be spaced evenly apart, indicating that the diffraction grating has an even spacing of 720 lines per mm. The pattern also shows that the light waves have a wavelength of about 0.5 mm.
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the part of the electromagnetic spectrum most absorbed by water is group of answer choices infrared. lower frequencies in the visible. higher frequencies in the visible. ultraviolet. middle frequencies in the visible.
Red light is more easily absorbed by water than other visible wavelengths and has a little bit more energy than infrared light that is invisible to the human eye.
What frequency range of the electromagnetic spectrum does water absorb most of?Red light is more easily absorbed by water than other visible wavelengths and has a little bit more energy than infrared light that is invisible to the human eye. Red fish appear almost black at 20 meters because of this. Compared to light with shorter wavelengths, longer wavelength light is absorbed more quickly.At normal temperature and pressure, atmospheric water vapor causes absorption that extends from about 200 cm-1 (50 m) to longer wavelengths approaching the microwave area in the far-infrared spectrum.To learn more about far-infrared spectrum refer to:
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At a certain temperature the vapor pressure of pure acetyl bromide (CH_3COBr) is measured to be 4B6. torr Suppose a solution is prepared by mixing 76.9 g of acetyl bromide and 119. g of hepriane (C_7H_16). Calculate the partial pressure of acetyl bromide vapor above this solution. Round your answer to 3 significant digits.
Acetyl bromide vapor has a partial pressure of 0.22 atm over this solution. Acetyl bromide is a chemical compound having a molar mass of 122.95 g/mol and a chemical formula of C2H3BrO.
The partial pressure be calculated?Acetyl bromide is a chemical compound having a molar mass of 122.95 g/mol and a chemical formula of C2H3BrO. With a density of 1.66 g/cm3, acetyl bromide is frequently categorized as a volatile organic substance.
Chloroform is a chemical substance with a molar mass of 119.38 g/mol and the chemical formula CHCl3.
So let's jump right into the calculations for the preceding question.
The mass/molar mass of acetyl bromide, C2H3BrO, is 51.8/122.95, or 0.421 moles.
Chloroform, CHCl3 has a molecular mass of 123/119.38, or 1.03 moles.
Total moles = 1.03 moles + 0.421 moles = 1.4513 moles.
Mole fraction of acetyl bromide = 0.421 moles/1.4513 moles = 0.2901 Partial pressure = 0.2901 x 0.75 = 0.2176 atm = 0.22 atm.
The complete question is,
The pure acetyl bromide's vapor pressure is calculated to be at a particular temperature. Let's say that acetyl bromide and chloroform are combined to create a solution. Determine how much acetyl bromide vapor is present above this solution as a partial pressure. To significant digits, round your response. Advanced students should be aware that they can presume the solution is perfect.
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a uniform disk turns at 3.0 rev/s around a frictionless central axis. a nonrotating rod, of the same mass as the disk and length equal to the disk's diameter, is dropped onto the freely spinning disk(figure 1). they then turn around the spindle with their centers superposed. What will be the angular frequency in rev/s of the combination when they start rotating together.
The angular frequency in rev/s of the combination when they start rotating together is 1.8 rev/s.
Apply conservation of angular momentum:
Ii.ωi=If.ωf
⇒ 1/2mR² ×3.0=( 1/2mR²+m(2R)²/12)ωf
⇒ωf =1.8rev/s.
A scalar representation of rotation rate in physics is called angular frequency, or "". It speaks of the angular displacement per unit of time, the rate of change of a sinusoidal waveform's phase, or the rate of change of the sine function's argument. The difference between angular frequency (measured in radians per second) and frequency (measured in cycles per second, also known as Hz) is two. Instead of the letter f, the symbol for frequency in this figure is. an axis-centered rotating sphere. Points further from the axis move more quickly, fulfilling = v / r. Angular frequency (), also referred to as radial or circular frequency, calculates the amount of angular momentum per unit of time. Therefore, it is measured in degrees (or radians) per second.
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Suppose that the top plate of a parallel-plate capacitor has an electric potential of 0 V and the bottom plate has a potential of 500 V. There is a distance of 1.3 cm between the plates. a. What is the change in potential energy of a charge of +6 x 10-- C that is moved from the bottom plate to the top plate? b. What is the direction of the electrostatic force exerted on this charge when it is between the plates? c. What is the direction of the electric field between the plates? d. What is the magnitude of the electric field between the plates?
a. The change in potential energy is 30,000,000 Joules
b. The direction of the electrostatic force exerted on this charge is upward
c. the direction of the electric field between the plates is upward
d. The magnitude of the electric field is 38461.5
A. What is the change in potential energy?The formula is
PE = qΔv
where PE = potential energy
q = charge of 6 x 10⁴
Δv = 500
The potential energy is given as
PE = 500 x 6 x 10⁴
= 30,000,000 Joules
b. What is the direction of the electrostatic force exerted on this charge when it is between the plates?The higher potential plate (bottom) exerts force on the positive charge in the opposite direction to the lower potential plate (up). Thus, the electrostatic force acting on the charge when it is sandwiched between the plates is directed upward.
(c) The electric field is moving upward because it is moving from a higher to a lower potential.
d. E = v / d
= 500 / 0.013
= 38461.5
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A ball is dropped onto the floor and bounces upward. Which of the following claims are correct about the force that the ball exerts on the floor compared to the force that the floor exerts on the ball when the ball and the floor are in contact?
The correct claim is "the force that the ball exerts on the floor and the force that the floor exerts on the ball when the ball and the floor are in contact are equal and opposite".
option D is the correct answer.
What is Newton's third law of motion?Newton's third law of motion states that for every action, there is an equal and opposite reaction.
According to this law, the force exerted on an object is equal to the reaction experienced by the object. In other words, action and reaction are always equal and opposite.
Mathematically, this law is written as;
Fa = Fb
where;
Fa is the force applied on the objectFb is the reaction exhibited by the object due to the applied forceFor a ball that is dropped onto the floor and bounces upward, the force that the ball exerts on the floor compared to the force that the floor exerts on the ball when the ball and the floor are in contact are equal and opposite.
Thus, we can conclude that the force exerted by ball on the floor and the reaction of the floor are equal and opposite.
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The complete question is below:
A ball is dropped onto the floor and bounces upward. Which of the following claims are correct about the force that the ball exerts on the floor compared to the force that the floor exerts on the ball when the ball and the floor are in contact?
A. the force of the ball is greater
B. the reaction of the floor is greater
C. there is no force
D. both forces are equal and opposite
What are the 4 most common payroll deductions?.
Tax on income. the social security tax. 401(k) remittances wages being garnished.
Payroll deductions are calculated in what way?Withholding computations for federal taxes. 2021 Calculation of the federal income tax withheld: To determine your yearly salary, divide your taxable gross income by the number of pay periods in a year. If you're married, deduct $12,900 from your calculated yearly salary. If you're single or the head of the household, deduct $8,600.
A normal payroll deduction is what?The legal prerequisites are the normal paycheck deductions. Federal income tax, Social Security, Medicare, state income tax, and mandated garnishments are some of them. Local income taxes are also levied by some counties, school districts, and cities.
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A mass m at the end of a spring of spring constant k is undergoing simple harmonic oscillations with amplitude a.
Simple harmonic oscillations with amplitude an are occurring in a mass m at the end of a spring with spring constant k. When this occurs, the kinetic energy increases by 9 times.
What exactly are a mass and weight?The quantity of matter that makes up an object is expressed in terms of mass. The gravitational pull on in an object is measured by its weight, which is a unit of force. Weight relies on location, whereas mass seems independent of place.
What does body mass entail?The National Cancer Institute defines a mass as a lump in the body that can be brought on by an immune response, a cyst, aberrant cell growth, or hormonal abnormalities. Thankfully, cancer is not always present in a bulk.
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The correct question is -
A mass m at the end of a spring of spring constant k is undergoing simple harmonic oscillations with amplitude A. show answer No Attempt 33% Part (a) At what positive value of displacement x in terms of A is the potential energy 1/9 of the total mechanical energy? x = | α β π θ A B d g h j k m P S t ( ) 7 8 9 HOME ↑^ ^↓ 4 5 6 ← / * 1 2 3 → + - 0 . END √() BACKSPACE DEL CLEAR Grade Summary Deductions 0% Potential 100% Submissions Attempts remaining: 3 (4% per attempt) detailed view Hints: 4% deduction per hint. Hints remaining: 2 Feedback: 5% deduction per feedback. No Attempt No Attempt 33% Part (b) What fraction of the total mechanical energy is kinetic if the displacement is 1/2 the amplitude? No Attempt No Attempt 33% Part (c) By what factor does the maximum kinetic energy change if the amplitude is increased by a factor of 3?
What does the R stand for in the acronym safer?.
R – means RESPONSIBILITY,R stands for Responsibility, Staffing for Proper Fire & Rescue Response (US Department of Homeland Security)
Why was the emergency postponed?The show was put on hold in 1977 after the sixth season, despite receiving high ratings, due to concerns about the star Robert Fuller's health (due to him wanting to do other projects). Six movie specials that were released in 1978 and 1979 are referred to as "Season Seven" of the television series.
What is an emergency?The four components of emergency management—mitigation, preparedness, response, and recovery—were first introduced by the Us Governors Association in a 1979 emergency management guide.
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a long wire stretches along the x axis and carries a 4.0 a current to the right ( x). the wire is in a uniform magnetic field
A long wire stretches along the x axis and carries a 4.0 a current to the right ( x). the wire is in a uniform magnetic field.
B = (0.22 i - 0.34 j + 0.16 k) T
L = (0.01 i) m
I = 3.2 A
F = I*L cross B = 3.2 * 0.01 * (- 0.16 j - 0.34 k) = (-0.00512 j - 0.01088 k) N
so
Fx = 0
Fy = -0.00512 N
Fz = -0.01088 N
force per CM:
fx = 0
fy = -0.00512 N/cm
fz = -0.01088 N/cm
A uniform magnetic area is represented by means of equally spaced parallel directly traces. The route of the flux is the direction in which the north-seeking pole of a small magnet factors. The strains of flux are continuous, forming closed loops.
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What has a wavelength of 10 m?.
Therefore, the frequency of the wave is 10 Hz when it has wavelength of 10 meters.
Wavelength (λ) = 10 nm
Speed of the wave = 340 m/s
To find:
The frequency of the wave
Formula used:
N=v/λ
where
n is the frequency
v is the speed
λ is the wavelength
Step-by-step explanation:
n=340/10
n=10Hz
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a daredevil motorcycle rider hires you to plan the details for a stunt in which she will fly her motorcycle over six school buses. assume the ride starts on flat ground. provide as much information as you can to help the rider successfully complete the stunt.
A daredevil motorcycle rider hires you to plan the details for a stunt in which she will fly her motorcycle over six school buses. He intends to ride off a horizontal platform at 40 m/s, then land on a ramp sloping down at 20°. Then the horizontal distance of the edge of platform from front edge of ramp is 59.6 m. The vertical distance of the edge of the platform from front edge of ramp is 10.9 m.
The direction of motorcycle launching speed on the ramp is
tan θ = gt / v
tan 20° = 9.8 * t/ 40
t = 1.49 s
The expression to calculate horizontal distance of the edge of platform from front edge of ramp is d = v * t
d = 40 * 1.49 = 59.6 m
The expression to calculate vertical distance of the edge of platform from front edge of ramp is h = 1/2 g t²
h = 1/2 * 9.8 * 1.49 = 10.9 m
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Light with wavelength 500 nm falls on a slit of width 10μm at an angle 30∘ to its normal. Find the angular position of the first minima located on both sides of the central Fraunhofer maximum : a) 33∘ and 27∘; b) 25∘ and 35∘; c) 36∘ and 24∘; d) 28∘ and 32∘
The angular position of the first minima located on both sides of the central Fraunhofer maximum : a) 33° and 27° is correct.
Normally, light with a wavelength of 5000 A° is incident on a slit with a width of 2.5× 10⁻⁴cm.The concept of diffraction is the foundation of the presented issue. The equation: yields the angular coordinates of the black fringes n, which are intercalated dark and bright fringes that are symmetric with regard to the center of the screen.
d × sinθ = n × λ
Where, n is the order of pattern minima, and θ is the angular separation.
n = 1 for first minima. In that case, angular separation is,
d × sinθ = λ
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when a rigid object (like a merry-go-round) rotates about a fixed axis, what is true about all the points in the object?
when a rigid object (like a merry-go-round) rotates about a fixed axis, it is true about all the points in the object.
What is rigid object?
The idea of a body that does not deform or alter shape is a "hard body." Formally, it is described as a collection of particles having the property that the distance between them stays constant throughout the body's motions.
What is fixed axis?
The rotation of a rigid body, or an item that does not deform when it moves, around a fixed axis is referred to as fixed-axis rotation. We'll demonstrate how to apply the theories we've discovered so far regarding translational motion to a rotating object around a fixed axis.
Everybody experiences the same angular acceleration.
Therefore, when a rigid object (like a merry-go-round) rotates about a fixed axis, it is true about all the points in the object.
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hoover dam on the colorado river is the highest dam in the united states at 221 m, with an output of 1300 mw. the dam generates electricity with water taken from a depth of 100 m and an average flow rate of 665 m3/s.
The pressure of the dam water is P = 8.47 ×[tex]10^8[/tex] W
Given : Length of the dam = 221 m
And the output = 1300 MW
The dam generates electricity and thus the length of that is 100 meters
Rate of flow = 665 m/s
P = Δ F / ΔT
Also pressure × Q = Power -- 1
Q = volume flow rate
To know the pressure
P = pgh
substitute this value in the above equation and we get
pgh × Q = P
1300 × 100 × 9.8 × 665 = P
this implies pressure = 847210000
that is P = 8.47 ×[tex]10^8[/tex] W
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an asteroid falls from the sky and hits the surface of mars. which undergoes the greater change in momentum during the time of contact?
Even at this speed, the kinetic energy of a meteoroid produces around 15 times more energy than an equivalent mass of chemical explosives like TNT.
What, an asteroid falls from sky, hits the surface of Mars?In Earth's atmosphere, almost all the material is vaporized, leaving a dazzling trail that is affectionately referred to as “shooting stars.” On an average night, one can view many meteors each hour. Meteor showers are occasions where the number suddenly and rapidly increases.
This kinetic energy is transformed into heat as the meteoroid slows down as it comes into contact with the gas molecules in the atmosphere.
Therefore, This kinetic energy is transformed into heat as the meteoroid slows down as it comes into contact with the gas molecules in the atmosphere.
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If a wave has a wavelength of 50 m and is traveling through water that is 30 m deep, what kind of wave is this?.
The wave having a wavelength of 50 m and traveling through water that is 30 m deep would be a deep water wave.
According to the definition, a deep water wave is a wave that occurs at water depths that is more than half the wavelength of the wave.
In the given case, the wavelength of the wave is 50 m and the depth of the water is 30 m which is more than half of the wavelength of the wave which is 25 m. Thus, the depth of the water is more than half of the wavelength of the wave. This makes the wave a deep water wave.
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How do you solve ohm resistance?.
The required resistance is calculated from the formula R=V/I
Voltage is measured in volts current in amperes and resistance in ohms. A zero-ohm resistor is exactly what the term stands for. This is a single resistor made to have a resistance of zero ohms when measured. Zero ohm through-hole resistors often have a single black band indicating the value of the resistance.
The lower the impedance the more efficiently the electrical signal which is essentially music can pass through the speaker Power. A measure of how well a material blocks the flow of current induced by a voltage Resistance is measured in ohms. When electrons move through a conductor such as a metal wire an electric current flows.
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a ball attached to the end of a string is swung in a vertical circle. assuming the energy of the ball-earth system remains constant, show that the tension in the string at the bottom is larger than the tension in the string at the top by six times the weight of the ball.
The tension in the string at the bottom is larger than the tension in the string at the top by six times the weight of the ball as 4mg + 2mg = 6mg.
Calculate the tension in the spring?Let V₁ be the speed of ball at bottom and V₂ at top, If Ttop and Tbottom are tensions :-
According to conservation of energy;
1/2mv₁² = 1/2mv₂² + mg(2R)
m(v₁² - v₂²) = 4mgR
Tbottom = mv₁²/R + mg
Ttop = mv₂²/R - mg
Tbottom - Ttop = m/R(v₁² - v₂²) + 2mg
⇒ 4mg + 2mg = 6mg
What is tension?Any physical object that is in contact with another one can apply forces to that object. Depending on the types of objects in touch, we label these contact forces differently. We refer to the force as tension if a rope, string, chain, or cable is one of the things applying the force.
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The southern hemisphere experiences the coldest seasonal weather during what portion of the earth’s orbit?.
The southern hemisphere experiences cold weather when the south pole tilts away from the sun.
When is it cold in the southern hemisphere ?The months of January or February in the Northern Hemisphere and June, July, or August in the Southern Hemisphere often have the lowest seasonal average temperatures.
Aside from the Antarctic continent (which is undoubtedly quite cold! ), there are no other nations on or below the Antarctic Circle. This often means that winters in the Southern Hemisphere are warmer.
Seasons in the Southern Hemisphere are, as we all know, the polar opposite of those in the Northern. Instead, the Earth's orbital tilt of 23.5 degrees as it revolves around the Sun provides the solution.
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You have a small reading lamp that is 35 cm from the pages of a book. You decide to double the distance.
a. Is the illuminance at the book the same?
b. If not, how much more or less is it?
a. The illuminance of the book is not the same.
b. The illuminance of the book is 3/4 less than the illuminance at the original distance.
What is the Optical Distance Law?The optical distance law defines that the illuminance of an object is inversely proportional to the square of the distance of the object from the light source, according to the equation presented as follows:
E = Φ / d²
In which the parameters are listed as follows:
E is the illuminance.Φ is the quantity of light from the source.d is the distance.In this problem, the distance is doubled, hence the new illuminance is given as follows:
En = Φ / (2d)² = Φ / 4d² = 1/4(Φ / d²) = 1/4E.
The illuminance is one fourth of the original illuminance, meaning that it is 3/4 less than the original illuminance.
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the following diagrams are the same as those from part a. this time, rank the pairs from left to right based on the size of the acceleration the asteroid on the left would have due to the gravitational force exerted on it by the object on the right, from largest to smallest. view available hint(s)for part c resethelp two accelerating cars. the car on the left accelerates much faster than the car on the right.
Newton's second law states that the asteroid with the greatest acceleration will also be the one that is subject to the correct object's greatest gravitational pull. Because of this, the ranking for Part A and Part B are identical.
When there are unbalanced forces acting on an object, Newton's second law of motion applies. According to the second law, the mass of the item and the net force acting on it both affect how quickly an object accelerates. An object's acceleration is directly proportional to the net force applied to it and inversely proportional to its mass. An object's acceleration increases as the amount of force exerted on it do. A decreasing acceleration is caused by an increase in an object's mass.
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wire loop of radius 12 cm and resistance 8.5 o is located in a uniform magnetic field e that changes in magnitude as given in fig. 30-38. the vertical axis scale is set by b, : 0.50 t, and the horizontal axis scale is set by r, - 6.00 s. the loop's plane is perpendicular to e . what emf is induced in the loop during time intervals (a) 0 to 2.0 s., (b) 2.0 s to 4.0 s., and (c) a.0 s to 6.0 s?
The EMF induced in the loop of radius 12 cm and resistance 8.5 Ω is located in a uniform magnetic field e that changes in magnitude during 0 s to 2 s is - 0.011 mV, 2 s to 4 s is 0 and 4 s to 6 s is 0.011 mV
ε = - dΦ / dt
Φ = B A
ε = - - dBA / dt
ε = - B dA / dt - A dB / dt
Since the area is constant through time,
ε = - A dB / dt
ε = - π r² dB / dt
a ) For 0 to 2.0 s,
ε = - π ( 0.12 )² ( ( 0.5 - 0 ) / ( 2 - 0 ) )
ε = - 1.1 * 10⁻² V
ε = - 0.011 mV
b ) For 2.0 s to 4.0 s,
ε = - π ( 0.12 )² ( ( 0.5 - 0.5 ) / ( 4 - 2 ) )
ε = 0
c ) For 4.0 s to 6.0 s,
ε = - π ( 0.12 )² ( ( 0 - 0.5 ) / ( 6 - 4 ) )
ε = 1.1 * 10⁻² V
ε = 0.011 mV
Therefore, the EMF induced in the loop during time intervals,
a ) 0 s to 2 s is - 0.011 mV
b ) 2 s to 4 s is 0
c ) 4 s to 6 s is 0.011 mV
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What are the two heat sources of the interior of the Earth?.
The two primary sources of Heat in the Earth's interior are radioactive decay and primordial heat. Both of these sources of heat are essential for driving the Earth’s internal dynamics.
Radioactive decay is the process by which unstable, naturally-occurring elements such as uranium, thorium, and potassium decay into more stable elements. As these elements decay, they release energy in the form of heat. This energy is then transferred to the Earth’s interior, where it helps to drive convection in the mantle and other dynamics. This heat is also responsible for the generation of Earth’s magnetic field.
Primordial heat is heat that has been present within the Earth since its formation, and is thought to be a result of the kinetic energy of the Earth’s formation. This energy has been slowly released over time, and is currently estimated to contribute around 20% of the Earth’s total heat budget. This heat is also responsible for the generation of convection in the Earth’s mantle, and is one of the main drivers of plate tectonics and other Earth dynamics.
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A laser pulse has an energy of 22 J and a beam radius of 2 mm. The pulse duration is 15 ns and the energy density is constant within the pulse. (a) What is the spatial length of the pulse? m * (b) What is the total energy density within the pulse? kJ/m3 (c) Find the electric and magnetic amplitudes of the laser pulse. E0 = MV/m B0 = T
The energy delivered in each pulse is 330 x 10⁻⁹ Joules. The average value of the magnitude of the electric field is 1.17 x 10⁻² V/m.
What is an electric field?
A region of space surrounding an electrically charged particle or object known as an electric field is one in which an electric charge would experience force. A vector quantity called an electric field can be represented by arrows pointing in the direction of or away from charges.
Pulse emitted = 15 × 10⁻⁹ s
Radius = 2 × 10⁻³ m
Power= 22 W
Energy = U=P × t
=15 × 10⁻⁹ ×22
= 330 x 10⁻⁹ Joule
The electric field RMS value is given by
S= P/A = cε₀ E²(rms)
E(rms) = √(P/Acε₀)
= √[22/π(2x10⁻³)(3x10⁸)(8.85x10⁻¹²)
E(rms) = √[22/166.81x10⁻⁷]
E(rms) = √[22 / 1.6 x 10⁻⁵]
E(rms) = √[1.37 x 10⁻⁴]
E(rms) = 1.17 x 10⁻² V/m
The electric and magnetic amplitudes of the laser pulse in electric field is 1.17 x 10⁻² V/m.
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a camera takes a properly exposed photo at f/5.6 and 1/160 s. part a what shutter speed should be used if the lens is changed to f/4.0?
A camera takes a properly exposed photo at f/5.6 and 1/160 s. part a the shutter speed should be used if the lens is changed to f/4.0 is 1/500 s.
Generally speaking, the use of the same old rule of thumb is to make the shutter velocity same for your focal period whilst hand-preserving your digital digicam.
For example, in case you are capturing with a 200mm lens then you definitely need to preserve your shutter velocity at 1/2 hundred sec or above to keep away from any blur happening from digital digicam shake. The shutter velocity that ought to be used if the lens is modified to f/4.zero is : 1/500 s. The courting among the shutter velocity and the focal ratio is an inverse courting.
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a turntable rotates with a constant 1.45 rad/s2 clockwise angular acceleration. after 4.00 s it has rotated through a clockwise angle of 30.0 rad.
According to the given statement the angular velocity of the wheel at the beginning of the 4.0 s time is 4.6 rad/s.
What does "angle" mean?In plane geometry, an angle is a shape made up of two directions or lines that share an endpoint. The English word "angle" derives from the Latin language "angulus," which means "corner." The vertex and the 2 rays are referenced to as the sides of an angle, respectively.
What names do angles have?Angle names can be given in one of three ways. An angle can be identified through its vertex, by its three points (the vertex must be the middle point), or by a sequence of letters inscribed within the angle's aperture.
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a uniform plank is 6.00 m long and weighs 80.0 n. it is balanced on a sawhorse at its center. an additional 20.0 n weight is now placed on the left end of the plank. to keep the plank balanced, it must be moved what distance to the right
A uniform plank is 6.00 m long and weighs 80.0 n. it is balanced on a sawhorse at its center. an additional 20.0 n weight is now placed on the left end of the plank. To keep the plank balanced, it must be moved 0.6m to the right.
How to calculate ?Given that, Mg=80 N
mg=20 N
L=6 m
mg([tex]\frac{L}{2}[/tex]-d)-Mgd=0
d=[tex]\frac{L}{2}[/tex][tex]\frac{mg}{mg+Mg}[/tex]=[tex]\frac{L}{2}[/tex][tex]\frac{20}{20+80}[/tex]=[tex]\frac{L}{10}[/tex]=[tex]\frac{6}{10}[/tex]=0.6m
What is uniform plank?A uniform plank is resting over a smooth horizontal floor and is pulled by applying a horizontal force at its one end.
What is horizontal force ?A force applied in a direction parallel to the horizon is known as horizontal force. The force exerted on a body consists of two components, namely the horizontal component and a vertical component.
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