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The focal length of a lens is inversely proportional to the quantity (n ? 1), where n is the index of refraction of the lens material. The value of n, however, depends on the wavelength of the light that passes through the lens. For example, one type of flint glass has an index of refraction of nr = 1.572 for red light and nv = 1.605 for violet light. Now, suppose a white object is placed 37.70 cm in front of a lens made from this type of glass. If the red light reflected from this object produces a sharp image 63.40 cm from the lens, where will the violet image be found?
cm from the lens
A man at point A directs his rowboat due north toward point B, straight across a river of width 100 m. While the man is crossing the river, what is his velocity relative to the shore
Find out the direction of the train motion
A point source of light is 200 cm below the surface of a body of water. Find out the diameter of the circle at the surface through which light emerges from the water.
Explain the velocity of two different objects: heavy rock & light feather. 1st, describe what happens when the two objects are dropped on Earth. 2nd, compare this to what happens on the Moon.
A 530kg cannon fires a 11kg cannonball with a speed of 200m/srelative to the muzzle, When the cannon fires, what is the speed of the cannonball relative to the earth
A solid cylinder (radius = 0.150 m, height = 0.120 m) has a mass of 6.90 kg. How much of the height of the cylinder is in the oil
An attacker at the base of a castle wall 3.63 m high throws a rock straight up with speed 8.80 m/s at a height of 1.51 m above the ground. Find the change in speed of a rock
On a banked race track, the smallest circular path on which cars can move has a radius of 120 m, while the largest has a radius 155 m, Find the smallest speed at which cars can move on this track without relying on friction
A neon sign in a shop operates at around 12 kV (rms). A transformer is to step-up the 120 V (rms) line voltage to that value. How many turns must be placed into the primary coil
Establish the Force required to raise a 25.50 kg object by 2 pulleys, the diameter of larger circular pulley is 12.0 cm and the smaller pulley is 8.5 cm.
The record distance in the sport of throwing cowpats is 81.1 m. This record toss was set by Steve Urner of the United States in 1981, Determine the initial speed of the projectile
A platinum resistance thermometer has a resistance of 100ohm at 0 deg and the value of alpha is 0.00385. Calculate the temperature
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