Will oil or vinegar flow faster?
Answer:
Vinegar
...................
Which force will return the fishing pole to its natural shape? (when bended)
balanced forces
tension
net force
compression
Explanation:
tension because compression,net force and balanced force cannot bend it back
At what altitude above the earth's surface is the gravitational acceleration 5. 6 m/s2?.
a = G M / R^2 gravitational acceleration
R^2 = G M / a = 6.67E-11 * 5.98E24 / 5.6 m^2/s^2
R^2 = 6.67 * 5.98 / 5.6 E13 = 71.2E12
R = 8.44E6 m
H = (8.44 - 6.37) E6 m = 2.07E6m above the surface of the earth
(About 1/3 of the radius of the earth)
As a check 4/3^2 = 1.78
9.8 m/s^2 / 1.8 = 5.4 Close enough to 5.6
A particular engine takes in 10,000 J of heat, does 2,000 J of work, and as it runs discharges heat. Its own energy is the same when it
has finished as when it started. How much heat did it discharge if this is a closed system?
10,000 J
12,000 J
2,000 J
8,000 J
Answer:
8000 J
Explanation:
There is a Quizlet made by a teacher with this answer.
The large piston in a hydraulic lift has a radius of 250 cm^2. What force must be applied to the small piston in order to raise a car with a mass of 1500 kg?
Based on the data provided, the force that must be applied at the small piston is f = 1500 × 9.81 × 250/A.
What is the Pascal principle?Pascal's principle states that the pressure applied to an enclosedfluid is transmitted undiminished tp every portion of the fluid.
Mathematically:
f/a= F/A
where
f is the force applied to the small pistona is the area of the small pistonF is the force at the large pistonA is the area of the large pistonTherefore:
f = Fa/A
Since the area of the large piston is not given
f = 1500 × 9.81 × 250/A
Therefore, the force that must be applied at the small piston is f = 1500 × 9.81 × 250/A.
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An 818 kg drag race car accelerates from rest to 109 km/h in 0. 926 s. What change in momentum does the force produce? answer in units of kg · m/s.
Answer:109km/h = 30.28
let change in momentum be cip
cip = m ( vf - vi )
cip= 818 ( 30.28 - 0)
cip = 24769.04 kg . m/s
Explanation:
The Ejection Seat at Lake Biwa Amusement Park in Japan (Figure 1) is an inverse bungee system. A seat with passengers of a total mass of 160 kg is connected to elastic cables on the sides. The seat is pulled down 12.0 m, stretching the cables. When released, the stretched cables launch the passengers upward above the towers to a height of about 30.0 m above their starting position at the ground. Assume that the cables are vertical.
Determine the spring constant of the cable.
This question involves the concept of the law of conservation of energy.
The spring constant of the cable is "915.6 N/m".
LAW OF CONSERVATION OF ENERGY:According to the law of conservation of energy, energy can neither be created nor be destroyed. It can only change from one form to another form. In this scenario, the elastic potential energy stored by the cable will completely be transformed into the gravitational potential energy at the highest point.
[tex]Loss\ of\ Elastic\ Potential\ Energy=Gain\ in\ Gravitational\ Potential\ Energy[/tex]
[tex]\frac{1}{2}kx^2=mgh\\\\k= \frac{2mgh}{x^2}[/tex]
where,
k = spring constant = ?m = mass = 160 kgg = acceleration due to gravity = 9.81 m/s²h = total height covered after launch = 12 m + 30 m = 42 mx = stretched length = 12 mTherefore,
[tex]k=\frac{2(160\ kg)(9.81\ m/s^2)(42\ m)}{(12\ m)^2}[/tex]
k = 915.6 N/m
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How much power is available on a typical 15 amp circuit at home with 110 volts?
Answer:1725 watts
Explanation: Household devices are required to run at 110-125 volts and most are rated at 115 volts so 1725 watts for a 15 amp cord or circuit. You will have to be careful when adding outlets for a 15 amp breaker. Always be sure to consult a licensed electrician before DIY electrical work.
Alice kicks a 0. 25 kg soccer ball with 0. 5 N of force. What force does the ball exert on Alice’s foot as she kicks it? N.
The ball exerts a force of 5 N on Alice's foot because every action has an equal and opposite reaction.
What does Newton's third law of motion state?
The third law of motion states that every action has an equal and opposite reaction. Force is the influence that can accelerate the object.
In the question, Alice kicks the ball with a force of 5 N, so, the ball will also exert an equal force but in opposite direction.
Therefore, the ball exerts a force of 5 N on Alice's foot.
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Charge q1 = +2.00 μC is at -0.500 m along the x axis. Charge q2 = -2.00 μC is at 0.500 m along the x axis. Charge q3 = 2.00 μC is at 0.500 m along the y axis. What is the magnitude of electrical force on charge q3 due to the others?
The magnitude of electrical force on charge [tex]q_{3}[/tex] due to the others is 0.102 newtons.
How to calculate the electrical force experimented on a particle
The vector position of each particle respect to origin are described below:
[tex]\vec r_{1} = (-0.500, 0)\,[m][/tex]
[tex]\vec r_{2} = (+0.500, 0)\,[m][/tex]
[tex]\vec r_{3} = (0, +0.500)\,[m][/tex]
Then, distances of the former two particles particles respect to the latter one are found now:
[tex]\vec r_{13} = (+0.500, +0.500)\,[m][/tex]
[tex]r_{13} = \sqrt{\vec r_{13}\,\bullet\,\vec r_{13}} = \sqrt{(0.500\,m)^{2}+(0.500\,m)^{2}}[/tex]
[tex]r_{13} =\frac{\sqrt{2}}{2}\,m[/tex]
[tex]\vec r_{23} = (-0.500, +0.500)\,[m][/tex]
[tex]r_{23} = \sqrt{\vec r_{23}\,\bullet \,\vec r_{23}} = \sqrt{(-0.500\,m)^{2}+(0.500\,m)^{2}}[/tex]
[tex]r_{23} =\frac{\sqrt{2}}{2}\,m[/tex]
The resultant force is found by Coulomb's law and principle of superposition:
[tex]\vec R = \vec F_{13}+\vec F_{23}[/tex] (1)
Please notice that particles with charges of same sign attract each other and particles with charges of opposite sign repeal each other.
[tex]\vec R = \frac{k\cdot q_{1}\cdot q_{3}}{r_{13}^{2}}\cdot \vec u_{13} +\frac{k\cdot q_{2}\cdot q_{3}}{r_{23}^{2}}\cdot \vec u_{23}[/tex] (2)
Where:
[tex]k[/tex] - Electrostatic constant, in newton-square meters per square Coulomb.[tex]q_{1}[/tex], [tex]q_{2}[/tex], [tex]q_{3}[/tex] - Electric charges, in Coulombs.[tex]r_{13}[/tex], [tex]r_{23}[/tex] - Distances between particles, in meters.[tex]\vec u_{13}[/tex], [tex]\vec u_{23}[/tex] - Unit vectors, no unit.If we know that [tex]k = 8.988\times 10^{9}\,\frac{N\cdot m^{2}}{C^{2}}[/tex], [tex]q_{1} = 2\times 10^{-6}\,C[/tex], [tex]q_{2} = 2\times 10^{-6}\,C[/tex], [tex]q_{3} = 2\times 10^{-6}\,C[/tex], [tex]r_{13} =\frac{\sqrt{2}}{2}\,m[/tex], [tex]r_{23} =\frac{\sqrt{2}}{2}\,m[/tex], [tex]\vec u_{13} = \left(-\frac{\sqrt{2}}{2}, - \frac{\sqrt{2}}{2} \right)[/tex] and [tex]\vec u_{23} = \left(\frac{\sqrt{2}}{2}, -\frac{\sqrt{2}}{2} \right)[/tex], then the vector force on charge [tex]q_{3}[/tex] is:
[tex]\vec R = \frac{\left(8.988\times 10^{9}\,\frac{N\cdot m^{2}}{C^{2}} \right)\cdot (2\times 10^{-6}\,C)\cdot (2\times 10^{-6}\,C)}{\left(\frac{\sqrt{2}}{2}\,m \right)^{2}} \cdot \left(-\frac{\sqrt{2}}{2}, -\frac{\sqrt{2}}{2} \right) + \frac{\left(8.988\times 10^{9}\,\frac{N\cdot m^{2}}{C^{2}} \right)\cdot (2\times 10^{-6}\,C)\cdot (2\times 10^{-6}\,C)}{\left(\frac{\sqrt{2}}{2}\,m \right)^{2}} \cdot \left(\frac{\sqrt{2}}{2}, -\frac{\sqrt{2}}{2} \right)[/tex]
[tex]\vec R = 0.072\cdot \left(-\frac{\sqrt{2}}{2}, -\frac{\sqrt{2}}{2} \right) + 0.072\cdot \left(\frac{\sqrt{2}}{2}, -\frac{\sqrt{2}}{2} \right)\,[N][/tex]
[tex]\vec R = 0.072\cdot \left(0, -\sqrt{2}\right)\,[N][/tex]
And the magnitude of the electrical force on charge [tex]q_{3}[/tex] ([tex]R[/tex]), in newtons, due to the others is found by Pythagorean theorem:
[tex]R = 0.102\,N[/tex]
The magnitude of electrical force on charge [tex]q_{3}[/tex] due to the others is 0.102 newtons. [tex]\blacksquare[/tex]
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Altitude refers to ________________. Group of answer choices the angular distance from the celestial equator the angular height of Polaris above or below the horizon the number of meters you're standing at from sea level the angular height away from the horizon
In Science, altitude refers to: D. the angular height away from the horizon.
What is altitude?Altitude is also referred to as an elevation and it can be defined as the vertical distance (height) above a natural satellite or the surface of a planet such as land or sea level.
This ultimately implies that, an altitude is vertical height (elevation) of an object or physical body above a particular location or planetary reference plane such as land or sea level on Earth.
In conclusion, altitude is the angular height of an object or physical body away from the horizon.
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Compare and Contrast electromagnetic waves to infer the relationship between frequency, energy, and wavelength.
Answer:
Explanation:This question is simply asking you to describe the following equations:
E = hv
v = c/L
E = hc/L
where E is the energy, h is Planck's constant, v is the frequency, c is the speed of light and L is the wavelength.
By looking at the equations you should be able to tell what the relationships between energy, frequency and wavelength are. If you are having difficulty describing them, then create a table with actual values and see what happens to the energy as you increase or decrease the frequency and/or wavelength.
What is the work done by the friction when the body slides against a rough horizontal surfaces?
A)positive
B)negative
C)zero
D)infinity
Negative work
Hope this helps :)
Help pls quick!!
Which statement about the force of an electromagnet's magnetic field is correct?
A. Increasing the number of coils increases the force, and increasing the amount of charge decreases the
force.
B. Increasing the speed of the charge increases the force, and increasing the length of the wire decreases the
force.
C. Increasing the amount of charge and decreasing the speed of the charge both increase the force.
D. Increasing the amount of charge and increasing the length of the wire both increase the force.
Pls help quick whoever gets it correct I will mark brainliest (:
Answer:
C
Explanation:
I hade the same assignment and the answer was C
Increasing the amount of charge and decreasing the speed of the charge both increase the force.
What is magnetic field?A magnetic field is a vector field that describe the magnetic influence on any object.The object moving in a magnetic field observes the force perpendicular to the it's own motion.How magnetic force effects the charges?The magnetic field generates magnetic force.This force depends on the amount charges on which it is applying and the speed of that charges.As we increases the amount the charge , the magnetic field now has more charges to interact with so the magnetic force will increase.As we decreases the speed of the charges than there is more time for magnetic field to interact with the charges.Hence , increasing the amount of charge and decreasing the speed of the charge both will increase the force.
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A 400 kg moving object has a kinetic energy of 15,000 J. What is the speed of the object?
A) 5.6
B) 8.7
C) 7.9
If an object has a force of 500N and the mass is 100Kg, what would the acceleration be for this
object?
- 600 m/sec
- 400 m/sec
- 50,000 m/sec
- 5 m/sec
Chose one
Answer:
5m/sec square
Explanation:
because F=M×A
A=F/M
.............................
Answer:
5m/sec square
Explanation:
because force = mass x acceleration
A=F/M
A swimmer heads directly across a river swimming at 1. 6 m/s relative to still water. She arrives at a point 40 m downstream from the point directly across the river, which is 80 m wide.
Answer:
50 Seconds
Explanation:
All you do is take 80 m / 1.6 m/s and you get 50 seconds, as that is how long it would take you to swim that far
A speeding train slams on the brakes when it sees a car is on the tracks in front of it. It takes the train 25 seconds for it to go from an initial speed of 75 m/s to come to a complete stop. What is the train’s acceleration?
Explanation:
Given:
Initial Velocity is 75 m/s
Fianl Velocity: 0 m/s
Time 25 seconds.
Acclereation?
Use kinematic equation,
[tex]v _{f} = v _{i} + at[/tex]
[tex]0 = 75 \frac{m}{s} + a(3s)[/tex]
[tex]{ - 75} \frac{m}{s} = 3s(a)[/tex]
[tex] - {25} \frac{m}{ {s}^{2} } = a[/tex]
So the acclereation is -25 m/s^2. Since the Velocity is positive and acclereation is negative, the train will be slowing down.
you have an open tube that is 1.7m long what is the fundemental frequency and wavelength of the tube
A race car accelerates at a constant rate from 20 m/s to 60 m/s in a time of 2 seconds. What is the car’s acceleration?
[tex]\huge\fbox{Answer ☘}[/tex]
Given ,
initial velocity , u = 20 m/s
final velocity , v = 60 m/s
time taken = 2 seconds
Now ,
[tex]\bold{acceleration = \frac{v - u}{t} } \\ \\ = > \bold{ \frac{60 - 20}{2} } \\ \\ = > \bold{\frac{40}{2} } \\ \\ \bold{ => 20 \: ms {}^{ - 2}}[/tex]
hope helpful~
Part of the electromagnetic spectrum is visible light. Which color is at the opposite end from red on the visible spectrum?.
Answer:
violet
Explanation:fart
What type of material is thought to explain the larger size of the outer planets relative to the inner planets
The material which is believed to explain the larger size of the outer planet in relation to the inner planet is gas while the inner is made of rock
Research on the solar system reveal to us that it is temperature of the the solar system that perfectly explain the materials both the outer and inner planets are made up of. The outer part is highly gaseous while the inner part is made of rocks
What is outer planet?It refers to planet whose orbit lies outside the asteroid belt. Examples include Jupiter, Saturn, Uranus, or Neptune.
What is inner planet?This simply means a planet whose orbit lies within the asteroid belt. They are planets such as Mercury, Venus, Earth, or Mars.
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All waves must travel up and down.
True
False
Answer:
True all waves that go up must come down
I feel like the follow the rule of gravity:everything that goes up must come d5
Fill in the blanks. Beats only occur when the frequency of two objects is _________________ and when those objects are made to _________________ together.
Is the distance we walk equal to the magnitude of our displacement?
Answer:
If you take the first example of the walk around the desk, it should be apparent that sometimes the distance is the same as the magnitude of the displacement. ... Since the displacement is measured along the shortest path between two points, its magnitude is always less than or equal to the distance.
Doubling speed does what to kinetic energy?
It stays the same
The final kinetic energy is double the initial kinetic energy
The final kinetic energy is 4 times the initial kinetic energy
The final kinetic energy is half the initial kinetic energy
Answer:
Final K.E. is four times initial KE
Explanation:
K. E. = 1/2 mv ^2 now double the speed
new K.E. = 1/2 m (2v)^2
= 1/2 m 4 v^2
= 4 * 1/2 m v^2
Answer:
The final kinetic energy is 4 times the initial kinetic energy
Explanation:
a cart starts with 300 j of pe when at 10m what is the mass of the object
Explanation:
Mass=volume ×density
10×300=3000m/j
The wavelength of a wave on a string is 1. 2 meters. If the speed of the wave is 60 meters/second, what is its frequency? A. 0. 20 hertz B. 2. 0 hertz C. 50 hertz D. 10 hertz E. 15 hertz.
Answer:
c
Explanation:
Examine the image shown here. Bike helmets like this one have padding made of foam under the hard exterior of the plastic. The foam is what is in contact with the head of the wearer. These are safer in an accident than a non-foam padded helmet for which reason? A) The foam increases the inertia. B) The foam increases the momentum. C) The foam increases the time of impact. D) The foam decreases the time of impact.
The foam decreases the time of impact.
What is Impulse?The Impulse applied to an object causes a change in the momentum of the object. Impulse is the product of force and time of impact.
J = Ft
where;
J is the impulseF is the applied forcet is the time of impactThe increase in the time of impact increases the impulse experienced by the object, and a decrease in the time of impact causes a decrease in the impulse experienced by the object.
Thus, we can conclude that the foam decreases the time of impact because it cushions the effect of impact.
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somebody help me please
Hope you could understand.
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