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A light beam is incident on heavy flint glass (n 1.65) atthepolarizing angle. Calculate the angle of refraction for the transmitted ray.
A car with a total mass of 1.78 103 kg has wheels of radius 31.0 cm and moment of inertia 0.805 kg · m2. Find the car's rotational energy when the car is moving at a speed of 22.5 m/s
The rectangular gate CD shown in the figure is 1.8 m wide and 2 long. Assuming the material of the gate to be homogeneous and neglecting friction at the hinge C, determine weight of the gate necessary to keep it shut until the water level rises to..
A small object begins a free-fall from a height of H = 87.0 m at t0 = 0 s. After %u03C4 = 2.20 s, At what height from the ground will the two objects first meet
When a single person shouts at a football game, the sound intensity level at the center of the field is 59.9dB. When all the people shout together, the intensity level increases to 111dB.
When at rest, a proton experiences a net electromagnetic force that has a magnitude of 7.2 x 10^-4 N and points in the positive x-direction. Find the magnitude and direction of the magnetic field
Placing an object in a beaker filled with water causes displacement of some water. Calcualte the buoyant force on the object
A mixture of iron and an unknown material is bombarded with electrons. What is the unknown material (use chemical symbol)
You rev your car's engine to 2600 (). a) If you change the period of the engine to 0.038 , how many rpms is it doing
You drop a 12-g ball from a height of 1.5 m and it only bounces back to a height of 0.81m. What was the total impulse on the ball when it hit the floor
q1. two ocean liners each with a mass of 38000 metric tons are moving on parallel courses 92 m apart. what is the
A stationary motion detector sends sound waves of frequency0.135 MHz toward a truck approaching at a speed of 49.2 m/s. What is the frequency of the waves reflected back to the detector?
A particle of charge of +3.50 10-6 C is 12.0 cm distant from a second particle of charge of -2.10 10-6 C. Calculate the magnitude of the electrostatic force between the particles. N
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