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One of Einstein's postulates in formulating the special theory of relativity was that the laws of physics are the same in reference frames that
A) accelerate.
B) move at constant velocity with respect to an inertial frame.
C) oscillate.
D) are stationary, but not in moving frames
An electron moves in a circular path perpendicular to a magnetic field of magnitude 0.255 T. Find the speed of the electron and the radius of the circular path
The block is pulled from its equilibrium position at x = 0m to a displacement x = +0.040m and is released from rest. The block then executes simple harmonic motion along the x-axis (horizontal). What is the displacement of the block at time t=0.20..
A sealed container of volume 0.10 m3 holds a sample of 3.0 × 1024 atoms of helium gas in equilibrium. Calculate the temperature and pressure of the helium gas
A wire loop of radius 0.50 m lies so that an external magnetic field of magnitude 0.30 T is perpendicular to the loop. The field reverses its direction, and its magnitude changes to 0.20 T in 2.0 s. Find the magnitude of the average induced emf in th..
The wiring in the wall of your house to and from an outlet has a total resistance of typically 0.16 ohm . Suppose a device plugged into a 120 V outlet draws 14.9 A of current. (a) What is the voltage drop along the wire?
It is claimed that if a lead bullet goes fast enough, it can melt completely when it comes to a halt suddenly, and all its kinetic energy is converted into heat via friction. Find the minimum speed of a lead bullet (initial temperature = 39.0° C) for..
a satellite would have a mass of 200 kg on the surface of the moon. determine the weight of the satellite in pounds
The decibel level of the noise from a jet aircraft is 130 dB when measured 16.8 m from the aircraft. How much sound power does the jet aircraft emit? How much sound power would strike the eardrum of an airport worker 16.8 m from the aircraft? Assu..
A car accelerates from 17 m s1to 31 m s-1 with a uniform acceleration of 2.5 m s-2. Calculate the displacement of the car during the acceleration.
A torque of 12 N ? m is applied to a solid, uniform disk of radius 0.50 m. If the disk accelerates at 5.7 rad/s2, what is the mass of the disk
After thermal equilibrium has been reached, the system has a change in temperature measured as 0.020 oC. explain the entering speed of the bullet.
A light-rail train going from one station to the next on a straight section of track accelerates from rest at 1.2 m/s2 for20 seconds. It then proceeds at constant speed for 1100 m beforeslowing down at 2.2 m/s2 until it stops at the station.
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