The impulse of the golf ball is 1.7 kg.m/s. The average force that the club exerts on the golf ball is 855 N and the average force that the golf ball exerts on the club is -855 N.
What are the two terms that best sum up a force?A vector quantity is force. Its amplitude and the way it acts are two characteristics that might be used to characterize it.
The mass of the ball m = 45 g = 45 · 10⁻³ kg
Initial velocity V = 38 m/s
Contact time t = 2 · 10⁻³ s
The impulse is calculated according to the formula:
I = m · V = 45 · 10⁻³ · 38 = 1,710 · 10⁻³ = 1.71 kg m/s
I = 1.71 kg m/s
The average force is calculated according to the formula:
F = ΔI / Δt = 1.71 / (2 · 10⁻³) = 855 N
F = ΔI / Δt = 1.71 / (2 · 10⁻³) = 855 N
F = 855 N
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State the basic assumptions of the kinetic theory.
if the child could swing around in a vertical circle, what minimum velocity, in [m/s], would be required at the top of its motion to maintain a uniform circle?
If the radius of the circle is 3 meters, the minimum velocity required to maintain a uniform vertical circle would be approximately 5.4 m/s.
To maintain a uniform vertical circle, the child would need to have a minimum velocity equal to the square root of the gravitational acceleration multiplied by the radius of the circle. The equation is:
v = √(g × r)
where v is the minimum velocity, g is the gravitational acceleration on earth's surface (approximately 9.8 m/s²), and r is the radius of the circle (3 meters).
v = √(9.8 × 3)
v = √29.4
v = 5.4 m/s
Therefore the minimum velocity required to maintain a uniform vertical circle is 5.4 m/s
It is important to note that this is the minimum velocity required to maintain a uniform circle and additional velocity would be required to counteract air resistance and other external forces.
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Your question seems incomplete, but I suppose the complete question was:
"If the child could swing around in a vertical circle, what minimum velocity, in [m/s], would be required at the top of its motion to maintain a uniform circle if the radius of the circle is 3 meters?
For the next experiment we will be using an ultrasonic sensor. This works by emitting a sound wave from a speaker and bouncing it off an object. The delay between the sending and retrieval of this sound wave allows us to determine the distance to the object. Assuming a speed of sound of 343 m/s, answer the questions below and show your work: o How far in centimeters does a sound wave travel in 3000 microseconds? o How long in microseconds does it take a sound wave to travel 30 cm?o Truncate your answer to the first decimal place. How long in microseconds does it take for a sound wave generated to bounce and get back from an object 50 cm away?
A) To find the distance a sound wave travels in a certain time, we can use the formula:
distance = speed x time
Given that the speed of sound is 343 m/s and the time is 3000 microseconds, we can calculate the distance as:
distance = 343 m/s x (3000 x 10^-6 s) = 1.029 m
converting this to cm we get:
distance = 1.029 m x 100 cm/m = 102.9 cm
B) To find the time it takes for a sound wave to travel a certain distance, we can use the formula:
time = distance/speed
Given that the distance is 30 cm and the speed of sound is 343 m/s, we can calculate the time as:
time = 30 cm / 343 m/s = 0.00087 s
converting this to microseconds we get:
time = 0.00087 s * 10^6 microseconds/s = 87 microseconds
C) The time it takes for the sound wave to travel to the object and back is twice the time it takes for the sound wave to travel to the object alone. Given that the distance is 50 cm and the speed of sound is 343 m/s, we can calculate the time as:
time = 2 * (50 cm / 343 m/s) = 2 * 0.000146 s = 0.000292 s
converting this to microseconds we get:
time = 0.000292 s * 10^6 microseconds/s = 292 microseconds
So it takes 292 microseconds for a sound wave generated to bounce and gets back from an object 50 cm away.
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given the lorentz factor, does time pass for a photon? what about for a place where gravity is so strong that the escape velocity equals the speed of light
For photons, time does not pass. In a vacuum, photons move at the same speed as light and have no mass.
A photon is what?A photon is a microscopic particle of electromagnetic energy, which is similar to a light particle. The frequency of the photon (i.e., how quickly the electric field and magnetic field oscillate; "rapid electric field" and "wiggle" need better terminology) determines its energy.
What elements make up a photon?A photon is a microscopic particle made up of electromagnetic radiation waves. Photons are essentially electric fields traveling through space, as Maxwell showed. Photons have no charge and no rest mass, and they move at the speed of light.
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what is the resistance of a parallel circuit with resistance's of 2 ohms, 4 ohms, 6 ohms, and 10 ohms ?
The resistance of a parallel circuit with resistances of 2 ohms, 4 ohms, 6 ohms, and 10 ohms is 1.75 ohms
The total resistance is calculated differently in a parallel circuit than in a series circuit. The formula to calculate the total resistance of a parallel circuit is:
1/Rt = 1/R1 + 1/R2 + 1/R3 + ...
Where Rt is the total resistance, and R1, R2, R3, etc. are the resistance values of the individual components in the circuit.
So, in a circuit with resistances of 2 ohms, 4 ohms, 6 ohms, and 10 ohms, the total resistance would be:
1/Rt = 1/2 + 1/4 + 1/6 + 1/10
Solving for Rt:
Rt = 1 / (1/2 + 1/4 + 1/6 + 1/10)
Rt = 1.75 ohms
Therefore, the total resistance of the parallel circuit with resistances of 2 ohms, 4 ohms, 6 ohms, and 10 ohms is 1.75 ohms
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What does the standard deviation of a set of data tell you?
A.The number of experiments that were performed
B.How many data points there are in the set
C.The largest and smallest data values of the set
D.How much each data point differs, on average, from the mean value of the set
Answer:
D. How much each data point differs, on average, from the mean value of the set
Explanation:
A standard deviation (or σ) is a measure of how dispersed the data is in relation to the mean. Low standard deviation means data are clustered around the mean, and high standard deviation indicates data are more spread out.
The change in sea level due to tides are primarily the result of ?
1. earth's rotation and revolution around the sun
2. the moon's rotation
3. the earth's rotation and the moon's revolution
4.the earth's elliptical orbit
According to the question, The change in sea level due to tides which are primarily the result of the Earth's rotation and Moon's revolution.
What triggers a tide?Ocean waves called tides go great distances. They result from the earth's gravitational pull from the moon and, to a slightly lesser degree, the sun. A shore encounters a tide when the wave's highest point, or the topping, reaches it.
What are waves and tides?Tides are extremely long-period waves that travel across the water as a result of the moon's and the sun's gravitational pull. The rise and decline of the sea's surface on a regular basis is what tides, which originate in the ocean, appear as as they move toward the coastlines.
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how far from the lens does the pencil need to be for the magnification m to be -1?
For a lens with a negative focal length, the image formed by an object placed at the focal point will be a virtual, inverted image with a magnification of -1. The object needs to be placed at the distance of the negative focal length in front of the lens for the magnification to be -1.
What is magnification?Magnification is the capability to make small objects appear larger. For instance using it to make a microscopic organism observable. Resolution is the capability to differentiate two objects from each other.
Why do lens posses a positive magnification?A concave lens always creates a erect, virtual, and reduced image irrespective of its position. Hence, the magnification is always positive, but less than 1.
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in a series circuit, the voltage across any load is inversely proportional to the value of the resistance of that load.
When a current flows through a series circuit, it must pass through each load in turn.
What is current flows?Current flow is a fundamental physical phenomenon in which electric charge is transferred through a medium, such as a conductor or semiconductor. The flow of charge is usually referred to as an electric current, and is measured in amperes.
This means that the amount of current that passes through each load is the same. Since voltage is equal to current multiplied by resistance, the voltage across each load is inversely proportional to its resistance – as the resistance increases, the voltage across it decreases. This is because the same amount of current is split between the higher resistance load and the other loads in the series, meaning that the load with the higher resistance will have a smaller voltage drop across it.
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As CO2 increases, the length of days increases. *
O True
O False
Answer: false
Explanation:
CO2 decreases during the day because of photosynthesis. The plants absorb the carbon di oxide present in the air to generate oxygen. When CO2 increases, the lengths of the nights are much affected than day. The lengths of days are not much changed. Hence, False.
Determine the average January sea level temperature at the following eight lettered points. A - 70 F B - 55 F C - 80 F D - 72 F E - 80 F F - 50 F G - 25 F
The average January sea level temperature at points A, B, C, D, E, F, G, and H is 57.75 degrees Fahrenheit.
To find the average temperature of eight points, we added all the temperatures and divided them by the number of temperatures (8).
70 + 55 + 80 + 72 + 80 + 50 + 25 + 60 = 462
Then divide the sum of all temperatures by the number of temperatures (8) to find the average temperature: 462 / 8 = 57.75
So the average January sea level temperature at points A, B, C, D, E, F, G, and H is 57.75 degrees Fahrenheit.
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5 c and 8 c charge give off a force of 2. 5 x 109 n. What is the distance between them?
The magnitudes of the two charges, and r is the distance between them. 0.018 m.
What is magnitudes?Magnitude is a measure of the size or strength of something, such as a physical quantity, a physical object, an event, or an occurrence. It is typically expressed as a numerical value, and is often used to compare different values or objects. Magnitude is a relative measure, and is used to compare two or more values, objects, or events.
The distance between the two charges can be calculated using Coulomb's law, which states that the force between two point charges is given by F = k*(q1*q2) / r^2, where k is Coulomb's constant (8.99 x 10^9 N m^2/C^2), q1 and q2 are the magnitudes of the two charges, and r is the distance between them.
Plugging in the values given, we get:
2.5 x 10^9 = 8.99 x 10^9 * (5 x 10^-6 C * 8 x 10^-6 C) / r^2
Solving for r, we get:
r = sqrt(2.5 x 10^9 / (8.99 x 10^9 * (5 x 10^-6 C * 8 x 10^-6 C))) = 0.018 m
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most of the focusing is done at the front of the eye by a clear membrane that bends light inward. this membrane is called the question 39 options: a) cornea. b) pupil. c) iris. d) lens.
At the front of the eye, most of the focusing is performed by the cornea, a transparent membrane that bends light inward. The ideal selection is A. The cornea, which is transparent and forms the front of the eye.
Shields the iris and pupil. The anterior chamber, etc. Around two thirds of the optical power of the eye is refracted by the cornea, anterior chamber, and lens. Light, often known as visible light, is electromagnetic radiation that can be seen by humans. The wavelengths of visible light are commonly thought to range from 400 to 700 nanometers (nm), or from 750 to 420 terahertz. In physics, a force is an effect that has the ability to change how an object moves.
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Please help me solve this.
Use significant figures please.
Answer:
the photo is not loading ok this is your photo open this and see now
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Concrete sidewalks are always laid in sections, with gaps between each section. For example, the drawing shows three identical 2.4-m sections, the outer two of which are against immovable walls. The two identical gaps between the sections are provided so that thermal expansion will not create the thermal stress that could lead to cracks. What is the minimum gap width necessary to account for an increase in temperature of 41° C?
Three sections will lengthen the total by 3 mm; hence, the total length of the two gaps should be equal displacement to or larger than 3 mm, making each gap 1.5 mm or greater.
What does physics mean by displacement?
The term "displacement" refers to a shift in an object's position. It is a vector quantity with a magnitude and direction. The symbol for it is an arrow pointing from the initial location to the ending place.
In physics, how do you express displacement?
Displacement in physics is denoted by the symbol s. The Greek word for "change in" is "delta," which is shaped like a triangle. Spatial position is indicated by the letter "s." It stands for "so"
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Three identical rocks are launched with identical speeds from the top of a platform of height 0 h . The rocks are launched in the directions indicated above. Rock 1, of mass m, reaches a maximum height hmax after being launched. During the time between the instant rock 1 is launched from height h0 and the instant it returns to height h0, the work done on the rock by the gravitational force is
The work done by the gravitational force on rock 1 can be calculated using the work-energy theorem. This theorem states that the net work done on an object is equal to the change in its kinetic energy.
What is gravitational force?Gravitational force is the attractive force between two objects that is proportional to their masses and inversely proportional to the square of the distance between them. It is the weakest force in nature and is the reason why objects with mass are attracted to each other. This force was first described by Isaac Newton in his law of universal gravitation, which states that the force between two objects is proportional to the product of their masses and inversely proportional to the square of the distance between them.
Since the rock is launched from rest at a height of h0 and then returns to the same height, its kinetic energy does not change and therefore the net work done on the rock is zero. This means that the work done by the gravitational force on the rock is also zero, since the only force acting on the rock is the gravitational force.
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a 2 kg block held 3 meters above the equilibrium position of a spring. if the block is released and falls such that it compresses the spring a maximum distance of 0.25 m below the equilibrium position, what is the spring constant of the spring?
Spring constant = (2 kg)(9.81 m/s²) / 0.25 m = 785.2 N/m.the equilibrium position, what is the spring constant of the spring.
what is equilibrium ?
Equilibrium is an important concept in economic theory and refers to a state in which economic forces such as supply and demand are balanced and in the absence of external influences the values of economic variables will not change. In economic terms, equilibrium occurs when the amount of goods and services supplied by firms equals the amount of goods and services that households are willing and able to buy.
This is also known as market equilibrium. In this situation, the price of goods and services will remain stable and market participants will not have a strong incentive to change their behavior. Equilibrium is also important in other fields such as physics and chemistry.
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a helicopter blade spins at exactly 110 revolutions per minute. its tip is 5.00 m from the center of rotation. (for each answer, enter a number.) (a) calculate the average speed (in m/s) of the blade tip in the helicopter's frame of reference. 3455.8 incorrect: your answer is incorrect. m/s (b) what is its average velocity (in m/s) over one revolution?
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The average velocity can be calculated as 3455.8 m/s.
What is average velocity?Average velocity is the rate at which an object's position changes over time. It is calculated by taking the displacement (change in position) over the change in time. Average velocity can be thought of as the object's overall speed in a certain direction.
The average velocity of the blade tip in the helicopter's frame of reference can be calculated by taking the circumference of the circle of rotation (2*pi*5.00 m) and dividing it by the time it takes for the blade to make one revolution (1/110 revolutions per minute). So the average velocity can be calculated as:
Average velocity = (2 * pi * 5.00 m) / (1/110 revolutions per minute)
= (2 * pi * 5.00 m) * (110 revolutions per minute)
= 3455.8 m/s
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a coin with a diameter of 2.21 cm is dropped onto a horizontal surface. the coin starts out with an initial angular speed of 17.5 rad/s and rolls in a straight line without slipping. if the rotation slows with an angular deceleration of 1.66 rad/s2 , how far does the coin roll before coming to rest? answer in units of m. answer in units of m.
Answer:
Approximately [tex]1.02\; {\rm m}[/tex].
Explanation:
Let [tex]\omega_{0}[/tex] denote the initial angular velocity, and let [tex]\omega_{1}[/tex] denote the final angular velocity. It is given that the initial angular velocity is [tex]\omega_{0} = 17.5\; {\rm s^{-1}}[/tex] and [tex]\omega_{1} = 0\; {\rm s^{-1}}[/tex].
Additionally, let [tex]a[/tex] denote the angular acceleration of this coin. It is given that [tex]a = (-1.66)\; {\rm s^{-2}}[/tex] (negative since angular velocity is slowing down.)
Let [tex]\theta[/tex] denote the angular displacement of the coin. Rearrange the rotational SUVAT equation [tex]({\omega_{1}}^{2} - {\omega_{0}}^{2}) = 2\, a\, \theta[/tex] to find the angular displacement [tex]\theta[/tex]:
[tex]\begin{aligned}\theta &= \frac{{\omega_{1}}^{2} - {\omega_{0}}^{2}}{2\, a} \\ &= \frac{(0\; {\rm s^{-1}})- (17.5\; {\rm s^{-1}})}{2\, (1.66\; {\rm s^{-2}})} \\ &\approx 92.25 \; (\text{radians})\end{aligned}[/tex].
It is given that the diameter of the coin is [tex]d = 2.21\; {\rm cm} = 0.021\; {\rm m}[/tex].The radius of the coin would be [tex]r = (d/2) = ((0.021\; {\rm m}) / 2) = 0.0105\; {\rm m}[/tex].
The question is asking for the linear displacement of this coin. Under the assumptions, the linear displacement of this coin would be equal to the product of angular displacement (in radians) and the radius of the coin:
[tex]\begin{aligned}x &= r\, \theta \\ &= (0.0105\; {\rm m})\, (92.25) \\ &\approx 1.02\; {\rm m}\end{aligned}[/tex].
a plane lands on a runway with a speed of 135 m/s, moving east, and it slows to a stop in 15.0 s. what is the magnitude (in m/s2) and direction of the plane's average acceleration during this time interval?magnitude
the magnitude (in m/s2) and direction of the plane's average acceleration during this time interval is a = -9 m/s2 in westward direction.
The rate at which velocity changes is called acceleration. Acceleration typically indicates a change in speed, but not necessarily. An item that follows a circular course while maintaining a constant speed is still moving forward because the direction of its motion is shifting.
Include the appropriate variables and the specified values in your writing.
v = 0 m/s and u = 135 m/s
t = 15 s
To calculate the necessary acceleration for the given scenario, write the first law of motion.
At zero speed, v = u + at = 135 m/s + a(15 s) a = -9 m/s2.
The plane is deaccelerating in the opposite direction of motion in this case, as indicated by the negative magnitude of acceleration. As a result, the magnitude in m/ s2 is 9 m/ s2, and the average acceleration of the plane during this time period is westward.
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give answer in points
What is the difference between potential difference and electromotive force (e.m.f)?
Answer:
The electromotive force is the amount of energy given to each coulomb of charge. The potential difference is the amount of energy utilized by one coulomb of charge. The electromotive force is independent of the circuit's internal resistance. The potential difference is proportional to the circuit's resistance.
a 0.500-kg mass attached to a spring with a force constant of 8.00 n/m vibrates in simple harmonic motion with an amplitude of 10.0 cm. calculate (a) the maximum va
The maximum volt-ampere(va) is 0.40 m/s.
What is force?An influence that can alter an object's motion is called a force. A force can cause an object with mass to change its velocity or accelerate. (for example, moving from a state of rest). Intuitively, a push or a pull can also be used to describe force.
Given,
mass=0.500 kg
force=8.00 n/m
amplitude= 10.0 cm
The maximum velocity of the mass can be calculated using the equation:
max v= A * ω
where A is the amplitude of the motion (in meters) and ω is the angular frequency of the motion (in radians per second).
We can find angular velocity using the equation:
ω = sqrt(k/m)
where k is the force constant of the spring (in newtons per meter) and m is the mass of the object (in kilograms).
Substituting in the given values:
ω= sqrt(8.00 N/m / 0.500 kg) = 4 rad/s.
A = 0.10 m (converting the amplitude from cm to m)
So,v_max = A * ω = 0.10 m * 4 rad/s = 0.40 m/s.
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7 The diagram shows a beam lying on the ground. End Q is lifted from the ground by the force F.
End P of the beam remains on the ground.
The length of the beam is 3.0m and its weight is 600 N.
The centre of mass of the beam at G is 1.0 m from end P.
What is the size of the force F when it just raises end Q from the ground?
A 200 N
B 300 N
C 400 N
D 600N
With solution.
When the beam just raises end Q from the ground, the magnitude of force F will be 300 N.
What is center of mass?The unique location where the weighted relative position of the distributed mass adds to zero at any given time is known as the center of mass in physics.
At equilibrium, net torque = 0
Take forces acting anti-clockwise direction as positive:
so, - 600 N × (1.0 m) + F ×(2.0 m) = 0
F = 600 N × (1.0m ÷ 2.0 m)
F = 300 N.
Hence, when it just raises end Q from the ground, the magnitude of force F will be 300 N.
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a store owner plans to hang a sign weighing 750 n so that cable a, attached to the store, makes a 30.0 degree angle to the vertical side of the building. cable b is horizontal and attached to an adjoining building. what is the tension in cable b?
A remains constant, the tension in cable B can be calculated using the formula T = W/sin(θ), where T is the tension, W is the weight of the sign, and θ is the angle formed by cable A. the tension in cable B is 750N/sin(30°) = 1333.38N.
what is cable ?
Cable is a type of wiring system used to transmit electrical signals. It consists of insulated conductors, usually copper, twisted together in a pattern that reduces interference from external sources. Cables are often used to connect components within a system, such as computers, televisions, and audio systems.
They can also be used to connect systems to each other, such as connecting a laptop to a router or connecting a router to a modem. Cables can be used to carry data as well as power. Depending on the type of cable, it can support various types of data transfer speeds and resolutions. For example, HDMI cables are used to transmit audio and video signals in high-definition.
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Which event may occur when ocean salinity increases? (its not multiple choice)
1. mass of water increases
2. freezing point of water increases
3. sunlight in deeper locations decreases
4. amount of dissolved gases in water increases
Ocean salinity increases when the freezing point of water rises. More salt is dissolved in the water as the salinity rises, increasing the mass of the entire solution.
The freezing point of water decreases as salt concentration increases. Because of the large amount of solute, sunlight cannot penetrate to the deeper layer of water. The water becomes denser overall. A essential quality of a body is its mass. Ocean salinity increases when the freezing point of water rises. More salt is dissolved in the water as the salinity rises, It was widely believed to be connected to the volume of matter in a physical body before to the atom's discovery and the development of particle physics. Theoretically, the same chemical might be included in different atoms and elementary particles.
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you are at the bank of a still river that is 100 m wide. a friend is standing on the opposite side of the river 300 m directly north of the point directly across from where you are. you plan to swim across the river then run along the opposite bank. if you can swim 3 meters per second and run 5 meters per second, then to what point should you swim to minimize your time?
To minimize your time to reach your friend, you should swim to the point directly across from your current position and then run along the opposite bank.
This is because the time you would take to swim to any other point along the opposite bank would be the same (100m / 3m/s = 33.33s) but the distance you would run would be different, and thus the time running would be different.
The time taken to run along the opposite bank is 300m / 5m/s = 60s. So the total time taken to reach your friend would be 33.33s + 60s = 93.33s.
This is the fastest way to reach your friend since you are taking the shortest path which is directly across the river and running along the opposite bank.
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what is the speed of an electromagnetic wave with a frequency of 1.33 x 10 ^17 hz and a wavelength of 2.25 nm?
2.99x10^8ms is the speed of an electromagnetic wave with a frequency of 1.33x10^17Hz and a wavelength of 2.25nm.
What is electromagnetic wave?
Electromagnetic waves are undetectable shapes of vitality that travel in spite of the fact that the universe. In any case, you'll be able "see" a few of the comes about of this vitality. The light that our eyes can see is really portion of the electromagnetic range.
Given,
Frequency of wave = 1.33x10 ^17Hz =1.33x10 ^17s^-1
Wavelength of wave = 2.25nm=2.25x10 ^-9m
Formula utilized :
v=c/λ
where,
v = recurrence of light
λ= wavelength of light
c = speed of electromagnetic wave = ?
Now put all the given values within the over equation, we get:
1.33x10 ^17s^-1 =c/2.25x10 ^-9m
c=(1.33x10 ^17s ^-1) x (2.25x10 ^-9m)
c=2.99x10 ^8m/s
Therefore, the speed of electromagnetic wave is 2.99x10^8ms
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what is the maximum transverse velocity at an antinode? express your answer with the appropriate units.
Answer:
An antinode should be motionless by definition.
Vav = 0 m / n sec = 0 m/s
an airplane travels 2750 km against the wind in 5 hrs and 3250 km with the wind in the same amount of time what is the rate of the plane in still in air and what is the rate of the wind?
We may utilize to determine the required wind speed to move persons and stuff. The formula is wind = 195 times the real number of the weight over the object's area in square feet.
What is speed and what is its unit in physics?The pace at which a distance changes over time is referred to as speed. It has a dimension of time-distance. As a result, the fundamental unit of time and all basic unit of travel are combined to form the Rectangular cross - section of speed. Thus, the metre per second (m/s) is the Input to the system of speed.
What does physics' law of speed entail?We can define our concepts first. Speed (s) is defined as the difference traveled per unit of time (d/t). Speed and furthermore a direction equals velocity.
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what temperature in celsius would be equal to 100 degrees fahrenheit?
A temperature of 100 degrees Fahrenheit is equivalent to 37.78 degrees Celsius.
The conversion formula between Fahrenheit and Celsius is as follows:
°C = (°F - 32) x (5÷9)
So, to convert 100 degrees Fahrenheit to degrees Celsius, we can plug in 100 for °F and solve for °C:
°C = (100 - 32) x (5÷9) = 68 x (5÷9) = 37.78
It is important to note that the degree unit size (Fahrenheit and Celsius) is not the same, and thus the numerical value of the temperature measured in those scales does not match one to one. The freezing point of water is 32 degrees Fahrenheit (0 degrees Celsius) and the boiling point is 212 degrees Fahrenheit (100 degrees Celsius). This means that 100 degrees Fahrenheit is considered a "hot" temperature, but 37.78 degrees Celsius is considered a "normal" room temperature.
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