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A 400g piece of metal is dropped into a cup containing 450g of water at 15C. The final temperature of the system is 40C. What is the specific heat capacity of the metal, assuming thermal isolation?
m1 = 26.00 kg, m2 = 13.10 kg, R = 0.12 m, and the mass of the uniform pulley M = 5.00 kg. Calculate the time interval required for m1 to hit the floor
John and David are carrying Bob on a uniform horizontal board 8.9 m long which weighs 211 N. find the upward force exerted by both John and David
An astronaut at rest on Earth has a heartbeat rate of 72 beats/min. When the astronaut is traveling in a spaceship at 0.90c.
q1. a 32 percent efficient electric power plant produces 900 mj of electric energy per second and discharges waste heat
A narrow flat coil wound on a square frame has 120 turns and sides of 21.5 cm. What is the maximum torque that can be exerted by the field on the coil
an amusement park ride consists of a large vertical cylinder that spins about its axis fast enough that any person
A 3.50 %u03BCC point charge is placed at the center of a conducting spherical shell. What is the surface charge density (C/m2) on the outer surface
You charge an initially uncharged 80.9-mF capacitor through a 46.7-? resistor by means of a 9.00-V battery having negligible internal resistance. What is the charge after a long time
A car is doing a loop-the-loop trick, the loop has a radius of.4 m. What is the minimum initial speed the car must have in order to remain in contact with the circular track at all times
The carbon isotope 14-C is used for carbon dating of archeological artifacts. What is the recoil speed of the nucleus
two stones are thrown simultaneously one straight upward from the base of a cliff and the other straight downward from
you are driving down the highway late one night at20when a deer steps onto the road35in front of you. your reaction
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