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Calculate the work done, the amount of heat absorbed, and the change in internal energy during:
a) melting of 1 gram of ice to water at a temperature of O degrees C under a constant pressure of 1 atmosphere
b) evaporation of 1 gram of water to water vapor at a temperature of 100 degrees C under a constant pressure of 1 atmosphere
While an elevator of mass 832 kg moves downward, the tension in the supporting cable is a constant 7730 N. What is the elevator's speed at t = 7.00 s
A 20kg box slides up a 12m long incline at an angle of 30 degrees with the horizontal. What is the change in gravitational potential energy
In a series circuit, a generator (1423 Hz, 16.3 V) is connected to a 16.2-O resistor, a 4.13-µF capacitor, and a 4.92-mH inductor. Find the voltage across each circuit element
The orbit of the moon takes 27.321661 days (you should convert to seconds!) at a radius of 384,748 km, Calcualte the orbital speed of the moon
a wire lying in the plane of the page carries a current directed toward the bottom of the page. What path will the electron follow
Two long parallel wires seperated by 50cm both carry currents of 4.0 A in the same vertically up direction. Find the magnetic field midway between the wires
You accidentally throw your car keys horizontally at 8.0 m/s from a cliff 64 m high. How far from the base of the cliff should you look for the keys
question1vector a points alone the y access and has a magnitude of 100 units vector b points at an angle of 60 degrees
Gold, which has a density of 19.32 g/cm3, is the most ductile metal and can be pressed into a thin leaf or drawn out into a long fiber. what is the length (in m) of the fiber
You are the science officer on a visit to a distant solar system. Prior to landing on a planet you measure its diameter to be 1.8*10^7 m and its rotation period to be 22.3 hours. what is the mass of the star
A 12.6 g CD with a radius of 6.16 cm rotates with an angular speed of 31.3 rad/s. What is its kinetic energy, What angular speed must the CD have
A 51-kg skier coasts up a snow-covered hill that makes an angle of 25° with the horizontal. What is the magnitude of the kinetic frictional force
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