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Unpolarized light passes through two polaroid sheets. The axisof the first is vertical, and that of the second is at 25.0° to the vertical. What fraction of the initial light is transmitted?
A soldier has a huge contraption that notches a large 2 kg arrow (it looks more like a lance) in a massive bow and uses a winch system to draw the arrow back to set the bow. What is the speed of the arrow
In the Bohr model of the hydrogen atom, the electron moves in a circular orbit of radius 5.3 x 10^-11 m with a speed of 2.2 x 10^6 m/s. Find the magnitude of the magnetic field that the electron produces at the location of the nucleus (treated as a ..
a circus clown weighing 170 lbs. is fired from a cannon at 50 degrees above the horizontal. The clown lands in a circular net that has a radius of 15 ft. What was the initial velocity of the clown
Two circular coils are concentric and lie in the same plane. The inner coil contains 92 turns of wire, has a radius of 0.018 m, and carries a current of 5.5 A. The outer coil contains 110 turns and has a radius of 0.032 m. What must be the magnitude ..
A golf ball of mass 4.50 10-2 kg is struck by a club. Compute the average force the club exerts on the ball by finding its average acceleration
Find out the maximum distance d (along the ladder) that the monkey can climb up the ladder before rope breaks.
A square copper plate has a circular hole in its center. Each side of the plate is 23.52 cm, and the radius of the circular hole is 7.827 cm
A coil with 50 turns (radius 15cm) with a total resistance of 4 ohms is placed in a uniform magnetic field directed perpendicularly to the plane of the coil. The magnitude of this field caries with the time according to B=Asin(alpha t) where A=80*..
An object at rest in a coordinate frame suddenly explodes into three parts of equal mass m. Two parts move away at right angles to each other and with equal speeds |v|.
A ball having a mass of150 g strikes a wall with a speed of4.8 m/s and rebounds with only 50% ofits initial kinetic energy. What is the speed of the ball immediately after rebounding
A spherical object has an outside diameter of 50.0cm. Its outer shell is composed of aluminum and is 0.800cm thick. Determine the object's average density
Shown on the right is large block 17.0 cm wide, 16.0 cm long, and 27.00 cm high of mass 2.55 kg. This block is passing through air (density ?air = 1.43 kg/m3). Calculate the terminal velocity of the block if it is traveling downward with a drag coeff..
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