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A hole in an aluminum plate has a diameter of 1.179cm at 24.00 degrees celsius a)At what temperature is the diameter of the hole equal to 1.176 cm
Two charged bodies exert an electrostatic force of 144 N on each other. If the distance between them is quadrupled and magnitude of one charge is cut in half, what is the new force between them.
A 28 kg child plays on a swing having support ropes that are 1.80 m long. A friend pulls her back until the ropes are 43 from the vertical and releases her from rest.
Estimate the ball's rise in temperature.
What is the speed of projectile immediately before it hits the ground if air friction does one and a half times as much work on projectile when it is going down as it did when it was going up.
find the ratio of vb to vr, where vr is defined above and vb is the boats speed with respect to the water.
An ideal gas initially at 20°C and 199 kPa has a volume of 3.40 L. It undergoes a quasi-static, isothermal expansion until its pressure is reduced to 94 kPa. (a) Find the work done by the gas. J (b) Find the heat added to the gas during the expans..
A particle of mass m moves next to the x axis. Its position varies with time according to x=(3m/s^3)t^3-(4m/s^2)t^2.
A spaceship of proper length 306 m takes 0.70 µs to pass an Earth observer. find the speed of this spaceship as measured by the Earth observer.
A 65-kg person wants to get to the top of a 2 m high ledge by swinging up to the top by running and grabbing a suspended rope suspended 5m above the ground by a tree.
A child in a boat throws a 5.20 kg package out horizontally with a speed of 10.0 m/s. Calculate the velocity of the boat immediately after, assuming it was initially at rest. The mass of the child is 26.0 kg and that of the boat is 40kg.
A circuit is connected in parallel with two capacitor C1=6F and C2=3F with seperate switches S1,S2 and has a voltage of 20V. capacitor C1 is first charged by closing switch S1. switch S1 is then opened , and charged capacitor is connected to the un..
A crate of mass 150.0 kg lies at rest on a horizontal storage room floor. The coefficient of static friction between crate and floor is 0.72, and the coefficient of kinetic friction is 0.85. (You may suppose g = 10.0m/s2).
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