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Two charges, one is 7 nC and another one is 13 nC are separated by 1 meter distance. Find distance from the smaller charge where electric field will be zero.
a gymnast is performing a floor routine. In a tumbling run she spins through the air, How much time does this maneuver take
An electron in the beam of a typical television picture tube is accelerated through a potential difference of 20,000 V before it strikes the face of the tube. what is the energy of the electron in electron volts
The moving non-conducting belt of a Van de Graaff generator carries 10 ?C of charge up to the metal sphere each second. What minimum power must be supplied to the generator
According to one estimate, the first atomic bomb released an energy equivalent to 20 kilotons of TNT. how much uranium was lost through fission in this bomb
many people mistakenly believe that astronauts that orbit the earth are above gravity. calculate the acceleration due
A firework explodes 120 m above the ground. Determine the time difference between two observers hearing the explosion
Calcium has a work function of 2.8 eV. If light of frequency 4.3 1015 Hz strikes the surface of calcium, what is the energy of the ejected electrons
how much work is required to accelerate a proton from rest up to a speed of 0.957c, what would be the momentum of this proton
Glenn gently pours acetic acid, index 1.27 onto some antimony trioxide, index of refraction 2.35. What angle will Glenn find in the acetic acid
You are asked to design a spring that will give a 1000 kg satellite a speed of 3.20 m/s relative to an orbiting space shuttle. find What distance must the spring be compressed
A light ray of λ = 410 nmenters at an angle of incidence of 37.6o from air into ablock of plastic. What is the speed of the light inside the plastic
A 9.66 × 1014 Hz electromagnetic wave propagates in carbon tetrachloride with a speed of 2.05 × 108 m/s. The wavelength of the wave in vacuum is closest to:
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