Three observers watch a train pull away from a station toward the right of the platform. observer a is in one of the train’s cars; observer b is on the station platform; and observer c is on another train traveling in the opposite direction along a parallel track. how would the observer in each frame of reference describe the motion of the train? according to newton’s laws of motion, how would the motion in the station platform’s frame of reference change if the conductor applied the brakes to the train? does universal gravitation affect the train? explain why or why not.
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Physics, 22.06.2019 11:10, axxpjr12
Consider an insulating crystal, made up of layers of atoms. what form would you expect the temperature dependence of the phonon heat capacity to approach at extremely low temperatures if the interlayer coupling is i)very strong (rigid coupling), and ii) very weak. explain.
Answers: 3
Physics, 22.06.2019 11:20, leandrogarin37p2g5ds
Suppose a diode consists of a cylindrical cathode with a radius of 6.200×10^−2 cm , mounted coaxially within a cylindrical anode with a radius of 0.5580 cm . the potential difference between the anode and cathode is 260 v . an electron leaves the surface of the cathode with zero initial speed (v initial=0). find its speed vfinal when it strikes the anode.
Answers: 1
Physics, 22.06.2019 15:50, rosepetals2938
If the work required to stretch a spring 3 ft beyond its natural length is 15 ft-lb, how much work is needed to stretch it 27 in. beyond its natural length?
Answers: 1
Three observers watch a train pull away from a station toward the right of the platform. observer a...
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