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What is the ratio of the velocity of a 2.65 MeV β ray to that of an α particle with the same kinetic energy? This should confirm that βs travel much faster than αs, even when relativity is taken into consideration. (Assume 1 u = 931.5 MeV/c2.)
Objects with masses of 245 kg and a545 kg are separated by 0.490 m. Find the net gravitational force exerted by these objects
A ray of light in air with a wavelength of 600 nm is incident on a liquid with an index of refraction of 1.5. find the wavelength of the ray of light in the liquid
Raindrops make an angle ? with the vertical when viewed through a moving train window (Fig). If the speed of the train is vr, what is the speed of the raindrops in the reference frame of the Earth in which they are assumed to fall vertically?
two charges -14 c and 3.3 c are fixed in place and separated by 3.3 m. a at what spot along a line through the charges
Planet A and planet B are in circular orbits around a distant star. Planet A is 7.6 times farther from the star than is planet B... What is the ration of their speeds
The primary coil of a step-up transformer is connected across the terminals of a standard wall socket, and resistor 1 with a resistnace R1 is connected across the secondary coil. The current in the resistor is then measured.
A 50 W light bulb shines through two polarizers. After having passed through the first polarizer, the electric field incident on the second polarizer is 5.0 V/m. The second polarizer sits at a 65° angle from the first polarizer. What is the electric ..
A satellite is placed in a circular orbit about Earth with aradius equal to 51% the radius of the Moon's orbit. What is its period of revolution in lunar months
Two coils have the same number of circular turns and carry the same current. Each rotates in a magnetic field acting perpendicularly to its axis of rotation, What is the radius (in cm) of coil 2
"Romeo tosses a pebble at Juliet's window to wake her. Unfortunately, Find the magnitude and direction of the pebble's velocity as it leaves Romeo'shand
a charge of -2.355 microc is located at 3.055 m 4.501 m and a charge of 1.800 microc is located at -2.372 m 0.a find
An electron confined to a one-dimensional box of length 0.70 nm jumps from the n = 2 level to the ground state. What is the wavelength (in nm) of the emitted photon?
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