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An infinitely long line of charge has a linear charge density of 3.50×10^-12 C/m . A proton is at distance 13.0 cm from the line and is moving directly toward the line with speed 2200 m/s . How close does the proton get to the line of charge? Answer is expressed in meters
a spring is resting vertically on a table. a small box is dropped onto the top of the spring and compresses it. suppose
An undiscovered planet, many lightyears from Earth, has one moon in a periodic orbit. This moon takes 19.0 days on average to complete one nearly circular revolution around the unnamed planet.
An object's terminal velocity is 52.135 m/s on a dry day (when the density of air is 1.21356 kg/m^3. What is the density of the humid air
A satellite is in a circular orbit around an unknown planet. The satellite has a speed of 1.65 104 m/s, What is the orbital speed of the second satellite
Oily n =1.38 finger.prints on a glass plate n = 1.52 preferentially reflect light with a frequency of 550 mm. What is the thickness of the finger print
q1. an artillery shell is fired with an initial velocity of 303 ms at 46deg above the horizontal. to clear an avalanche
In November 2004, the United States tested a scramjet that flew at 10.0times the speed of sound for 11.0s , as measured by engineers on earth. How long did the flight last as measured inside the jet
An object hangs from a spring balance. The balance registers 30 N in air, 20 N when the object is immersed in water, What is the specific gravity of the unknown liquid
The rotor (flywheel) of a toy gyroscope has mass 0.150 kg. Its moment of inertia about its axis is 1.20x10^-4kgm^2. Find the upward force exerted by the pivot
A flywheel with a moment of inertia of .15 kgm2, is on a motor that puts out 2.4 Nm of torque. How many rotations will the wheel make by the time it reaches a speed of 1500 rpm
A solenoid of length 6.3 cm and diameter 0.88 cm is wound with 178 turns per cm. The current is decreasing at a rate of 38.0 A/s. What is the induced emf in one of the windings
Suppose I have two infinite wires, one on the y axis and one on the x axis, each charged uniformly with lamda C/m. Find an expression for the electric field E at any point in the x and y plane as a function of x and y.
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