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In a physics lab experiment, a student immersed 206 one-cent coins (each having a mass of 3.00g ) in boiling water. After they reached thermal equilibrium, she quickly fished them out and dropped them into 0.238kg of water at 20.0%u2218C in an insulated container of negligible mass.
PART A) What was the final temperature of the coins? [One-cent coins are made of a metal alloy - mostly zinc - with a specific heat capacity of 390 J/(kg%u22C5K).]
Two students perform an experiment with a train and a ball. Michelle rides on a flatcar pulled at 8.35 m/s by a train ona straight, horizontal track. What was the initial speed of ball as seen by Gary
A long hollow nonconducting cylinder (radius R = 0.060 m, length l = 0.70 m) carries a uniform charge per unit area of = 4.0 C/m2 on its surface. Find the net power entering the interior volume of the cylinder
A satellite is placed in orbit 9.00x10^5 m above the surface of the planet Jupiter. Find the orbital speed of the satellite
Molecules act as tiny springs and have vibration energy and frequency. The frequency of CO molecule is 6.42 x 1013Hz. Calculate the spring constant using the effective mass
(a) Determine the magnitude and direction of the electric field at the location of charge q. (Use k_e for the Coulomb constant and q and a as necessary.) Magnitude Direction ° (counterclockwise from the horizontal) (b) What is the total electric f..
By how much does the potential energy of a 15.0-kg child increase. Find v0.
A charge of + 2.00nC is uniformly distributed on a ring of radius 10.0cm that lies in the x = 0 plane and is centered at the origin. Find the work required to move the point charge to the origin.
At the lowest point in a vertical dive (radius = .69 km), Determine the magnitude of the acceleration of the pilot
A cannon ball is shot straight upward with a velocity of 77.50 m/s. What is the maximum height attained by the cannon ball
A man uses a tire iron to loosen his lug nuts. The tire iron is 25cm long. The man applies a force of 30N at an angle of 29° to the iron. What is the torque that is applied to the lug nut
A flint glass plate (n = 1.66) rests on the bottom of an aquarium tank. Calculate the apparent thickness of the plate as viewed from above the water
An unknown substance has a mass of 0.125 kg and an initial temperature of 94.7. calculate the specific heat of the unknown substance
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