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A copper beaker of mass 0.20 kg contains 0.10 kg of water at 20.0 celsius. A block of silver of mass 100 g at 90.0 celsius is added to the beaker of water. The entire system is thermally insulated from the surroundings.(specific heats-copper: 390J/Kg K, silver: 234 J/ Kg K, water: 4190 J/Kg K)
(a) What is the final temperature of the system?
(b) What is the heat lost by the silver?
(c) What is the heat gained by the water? What is the heat gain of the copper?
Two narrow slits 0.286 mm apart are illuminated by light of wavelength 542. nm. The light falls on a screen 1.60 m away from the slits. What is the angular seperation between adjacent maxima
Suppose that in the same Atwood setup another string is attached to the bottom of m1 and a constant force f is applied, retarding the upward motion of m1. If m1 = 4.80 kg and m2 = 9.60 kg, what value of f will reduce the acceleration of the system..
Electrons in a photoelectric effect experiment emerge from an aluminum surface with a max kinetic energy of 1.30 eV. What is the wavelength of the light
A Carnot air conditioner takes energy from the thermal energy of a room at 294 k and transfers it as heat to the outdoors, which is at 309 k. for eacg joule of electric energy needed to operate the air conditioner, how many joules are removed from..
You set up an experiment with two polarizer screens on an optical bench and collect data for the intensity of the light, What is ambient light in the room as you took your data
A 251 kg wooden raft floats on a lake. When a 70kg man stands on the raft, it sinks 4cm deeper into the water. When he steps off, the raft vibrates for a while.
A thin, uniformly charged spherical shell has a potential of 638 V on its surface. Outside the sphere, at a radial distance of 16.0 cm from this surface, Calculate the radius of the sphere
A camera takes a perfectly exposed picture when the lens diaphragm is set to f/4 and the shutter speed is 1/250 s, what should the new shutter speed be so that the exposure is still correct
An air-filled parallel-plate capacitor has plates of area 2.50 cm2 separated by 2.00 mm. The capacitor is connected to a 3.0-V battery, What is the magnitude of the uniform electric field between the plates
The rms speed of the molecules in 1.8 of hydrogen gas is 1600 m/s. What is total translational kinetic energy of the gas molecules.
A young boy swings a yo-yo horizontally above his head at an angular acceleration of 0.32 rad/s^2. If the tangential acceleration of the yo-yo at the end of the string is 0.15 m/s^2, how long is string.
A 73cm long metal string under 35.0N tension has a linear mass density of 2.45x10^-4 kg/m. Find the frequencies of the first three harmonics
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