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Light from the bottom of a swimming pool is incident on the surface at an angle of 20°. What is the angle of refraction?
A microwave radio transmitter emits electromagnetic waves of a single wavelength. What is the power of the transmitter
As a car approaching you driver lays on the horn. The horn has an actual frequency of 350Hz but you hear the horn as 390 Hz. What is the speed of the car.
An elderly sailor is shipwrecked on a desert island but manages to save his eyeglasses. How far apart are the lenses when the telescope is adjusted for minimum eyestrain
A tennis player receives a shot with the ball (0.060 0 kg) traveling horizontally at 53.5 m/s and returns the shot with the ball traveling horizontally at 39.0 m/s in the opposite direction. What work does the racquet do on the ball
A particle with charge of 16.1 µC is placed at the center of a spherical shell of radius 29.0 cm. find the total electric flux through the surface of the shell
Part A-Power lines carry electricity at about 120,000 volts. If a power line were stepped down by a transformer to 120 volts, how many turns would there be on the secondary coil if there were 1000 turns on the primary? Show calculations. Part B-If..
What is the smallest number of whole logs (? = 725 kg/m3, radius = 0.0917 m, length = 3.10 m) that can be used to build a raft that will carry four people
Near the surface of the Earth there is an electric field of about 150 V/m which points downward. Use conservation of energy to determine the difference in the speed of the two balls when they hit the ground
A 320 kg rocket sled can be accelerated at a constant rate from rest to 1400 km/h in 2.0 s. What is the magnitude of the necessary net force.
q1. to decide freefall acceleration on a moon with no atmosphere you drop the handkerchief off the roof of a baseball
Put A 220 lb man presses the brakes with a force of 28 lbs/in2 to stop his car while traveling at a speed of 48 mi/hr. find the amount of deceleration experienced by him
A 9.0×10-24-kg particle is vibrating with simple harmonic motion with a period of 1.9×10-5 s, Find the maximum displacement of the particle
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