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A system of 1506 particles, each ofwhich is either an electron or a proton, has a net charge of-4.704 10-17 C.
(a) How many electrons are in this system?
(b) What is the mass of this system?
A clock has a second hand whose tip rubs against the inside of the glass cover. what is the minimum torque that must be applied to the second hand
You are asked to design a spring that will give a 1310-kg satellite a speed of 3.50 m/s relative to an orbiting space shuttle, What must the force constant of the spring be
What is the magnitude of the electric field 19.7 cm directly above an isolated 3.25×10^?5 C charge? What is the direction of the electric field? Downward or upward?
Two loudspeakers are placed next to each other and driven by the same source at a frequency of 570Hz. A listener is in front of the speakers and on the line separating them.
A proton moving at 7.00 106 m/s through a magnetic field of magnitude 1.74 T experiences a magnetic force of magnitude 7.40 10-13 N. What is the angle between the proton's velocity and the field
A 900-kg car traveling east at 15.0 m/s collides with a 750-kg car traveling north at 20.0 m/s. The cars stick together. What is the speed of the wreckage just after the collision
Suppose the speed of light were only 3000 m/s. A jet fighter moving toward a target on the ground at 600 m/s shoots bullets, What are the bullets' velocity relative to the target
A worker drags a crate across a factory floor by pulling on a rope tied to the crate. Calculate the magnitude of the acceleration of the crate
The speed of sound in air at room temperature is 339 m/s. What is the frequency of a sound wave in air with wavelength 1.0 m
An automatic dryer spins wet clothes at an angular speed of 4.2 rad/s. How long does it take the dryer to come up to speed
find an article on a current event related to macroeconomics. briefly summarize the article and state how a concept in
Suppose that you are traveling on board a spacecraft that is moving with respect to the earth at a speed of 0.935c. what is your breathing rate
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