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If you put 1kg of glass in contact with an equal mass of water andits temperature drops 5 degrees, by how much will the temperatureof the water rise?
An x-ray photon is scattered from a free electron (mass m) at rest. The wavelength of the scattered photon is ?', and the final speed of the struck electron is v. Through what angle w is the photon scattered
Find the frictional torque, which is assumed to be constant. Find the moment of inertia of the wheel.
q1. cannon at the top of a 147 m high cliff fires at a pirate ship. the cannonball has an initial velocity of 114 ms at
Consider an object that is in an elliptical orbit with semimajor axis a = 3.1×106 m about a planet of mass M = 2.2×1023 kg. What is the speed of the object When it is closest to the planet at r = a/4
A charge of q = +7.50 µC is located in an electric field. The x and y components of the electric field are Ex = 4.80 103 N/C and Ey = 7.40 103 N/C, respectively. (a) What is the magnitude of the force on the charge? (b) Determine the angle that th..
If the hypotenuse of a right triangle is 6.00cm long, and the opposite is 4.00. What is the angle facing the opposite
Jupiter has a radius of 71,492km and a mass of 1.9x10^27kg. What is the acceleration due to gravity at Jupiter's surface
A uniform, 257-{\rm N} rod that is 2.05 {\rm m} long carries a 225-{\rm N} weight at its right end and an unknown weight W toward the left end, how far must the fulcrum be moved to restore balance
The altitude of this luge track is 2237m. The altitude at the end is 2205 m. If a luger takes 48 seconds to complete a run, what is his average vertical velocity
A 220 g block is attached to a horizontal spring and executes simple harmonic motion with a period of 0.150 s. If the total energy of the system is 3.50 J.
When light of wavelength 360 nm falls on a lithium surface, electrons having a maximum kinetic energy of 1.15 eV are emitted. determine the work function of lithium
A ball is thrown horizontally from the top of a 60.0-m building and lands 100.0 m from the base of the building. Ignore air resistance. What must have been the initial horizontal component of the velocity
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