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A 1391.3 kg car is traveling at 29.8 m/s when the driver takes his foot off the gas pedal. It takes 4.9 s for the car to slow down to 20 m/s. How large is the net force slowing the car? Answer in units of N
A gold prospector finds a solid rock that is composed solely of quartz and gold. The mass and volume of the rock are, respectively, 13.1 kg and 2.08 × 10-3 m3, Find the mass of the gold in the rock
q1. a worker stands still on a roof sloped at an angle of 40deg above the horizontal. he is prevented from slipping by
A guitar string is 90.0 cm long and has a mass of 3.23g. find the frequencies of the fundamental and first two overtones
A spherical object with a moment of inertia of 0.482mr2 starts from rest rolling down a 3.51-m high incline. what is its linear speed at the bottom of the incline
Astronomers determine that a nearby galaxy is moving toward our galaxy at a speed of 720.0 km/s with respect to the Earth, what was the wavelength emitted by the star
A grating spectrometer is used to resolve third order peaks from two wavelengths of ?1 = 455.00 nm, What is the minimum number of slits this grating must have
The length of nylon rope from which a mountain climber is suspended has a force constant of 1.10 ? 104 N/m. What is the frequency at which he bounces
A ball initially at rest rolls without slipping down an inclined plane while a block slides without friction down an identical plane. Which arrives at the bottom with more kinetic energy
While partying in Paris, you throw a glass of champagne off of the Eiffel Tower. how high above the ground are you
A tennis ball of mass 57 g travels with velocity m/s toward a wall. After bouncing off the wall, What is the change in the momentum of the tennis ball
A pulley 18 in diameter is free to rotate about the horizontal axle. A 220 mass and a 420 mass are tied to either end of a massless string, and string is hung over the pulley.
A satellite circles the earth in an orbit whose radius is 2.78 times the earth's radius. What is the period of the satellite
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