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Q. A laser beam is incident on a 45°-45°-90° prism perpendicular to one of its faces. The transmitted beam that exits the hypotenuse of the prism makes an angle of 15° with the direction of the incident beam. Find the index of refraction of the prism. (Use the following as necessary: θ1 = 15°, θ2 = 45°)
Q. A block of wood of mass 2 kg is suspended by long, light strings and is at rest. A bullet of mass 40 g, strikes and remains in the block, causing it to swing. The maximum height of the block above its rest position is 51 cm. Find:
a) the kinetic energy of the bullet plus block immediately after impact;b) the velocity of the bullet at impactc) the kinetic energy of the bullet at impact.Why are the answers to a) and c) not equal?
A 0.174kg softball is pitched horizontally at 26m/s. the ball moves in the opposite direction at 38m/s after it is hit by the bat.
How much work did the movers do (horizontally) pushing a 190-{rm kg} crate 11.2 m across a rough floor without acceleration, if effective coefficient of friction was 0.60.
A 27 pound meteorite struck a car, leaving a dent 21 cm deep in the trunk. If the meteorite struck the car with a speed of 500 m/s, what was the magnitude of its deceleration, assuming it to be constant.
An airplane starting from airport A flies 280 km east, then 365 km at 29.0° west of north, and then 130 km north to arrive finally at airport B.
A group of hikers hear an echo 2.50 s after they shout. If the temperature is 28°C, how far away is the mountain that reflected the sound wave.
A 150 kg hoop rolls along a horizontal floor so that the hoop's center of mass has speed of 0.180 m/s. How much work must be done on the hoop to stop it.
What is height of the cliff
What is acceleration of the elevator
A train is travelling up a 5 degree incline at a speed of 2.2 m/s while the last car breaks free and begins to coast without friction. a) How long does it take for the last car to come to rest momentarily? b) How far did last car travel before mom..
How many kilocalories of heat are produced when the brakes are used to bring a 930 kg car to rest from a speed of 102 km/h.
What is the tangential acceleration of a bug on the rim of an 11.00 in.-diameter disk if the disk accelerates uniformly from rest to an angular speed of 79.03 rev/min in 3.60 s? One second after the bug starts from rest, what is its centripetal accel..
A 41-kg box is thrown at a speed of 220 m/s & is brought to a halt in a collision that lasts for a time of 6.5 m/s. Find the magnitude of the average net force that acts on the box during the collision.
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