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A proton (mass= 1.67×10-27 kilogram, charge= 1.6 × 10-19 C) travelling with speed 1 × 106 m/s enters a region of space containing a uniform magnetic field of 1.2 T. Find the time t required for the proton to re-emerge into the field-free region?
When Brewster's angle of polarized light due to a reflection of light off of the surface of water makes a ray of light, how is the ray of light related to the ray of light that is refracted by the incoming beam into the water?
A 76kg student consumes 2500 Cal each day and stays the same weight. One day, he eats 3500 Cal and, wanting to keep from gaining weight, decides to "work off" the excess by jumping up and down.
A 4.0-kg object has a velocity of 4.0 m/s headed east. An explosion causes it to break up into two smaller 2.0-kg objects. what is the velocity of the other object after the explosion
You are operating a water pump at the base of a 18 m building. The water at the base is 3.8 atm and moving at 0.6 meters per second. What is the velocity and the pressure of the fluid at the top of the building
An undersea research chamber is spherical with an external diameterof 5.20 m. estimate the buoyant force on the chamber
A 2345 kg car plans to round an unbanked corner with a radius of 34m at a speed of 45mph. What is the maximum speed at which the car could make the turn if the coefficient of static friction is 1.5
1 a small steel ball bearing with a mass of 20.0 g is on a short compressed spring. when aimed vertically and suddenly
A small button placed on a horizontal rotating platform with diameter 0.328 will revolve with the platform when it is brought up to a rotational speed of 45.0 rev/min , provided the button is a distance no more than 0.141m from the axis. a)What is..
A beam of light strikes the plane surface of borate flint glass at an angle of incidence of 57°. How much smaller is the angle of refraction for violet light of wavelength 400 nm than that for red light of wavelength 700 nm
A 45 g golf ball is pushed up a 30° ramp. The ball starts from rest and the length of the surface of the ramp is 5 m. What was the magnitude of the pushing force
A conductor in the shape of a spherical shell of radii 2,5cm is charged to 20 microcoloumbs. How much work is required to move a 10 microcoloumb charge from the position (0.20) to the point (10,10)
A football punter accelerates a football from rest to a speed of 7 m/s during the time in which his toe is in contact with the ball, find what average force does the punter exert on the ball
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