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A car of 1200 kg mass is traveling uphill at an angle of 20 degrees at a constant speed.
A) What is the magnitude of the normal force on the car?
B) What is the magnitude of the force the tires are using to push the car uphill?
C) What is the weight of the car?
You are on a train traveling east at speed of 20.0 m/s with respect to the ground. what is your velocity with respect to the ground
Two carts with masses of 10.60 kg and 2.50 kg, respectively, move in opposite directions on a frictionless horizontal track with speeds of 6.70 m/s and 3.50 m/s, in that order. The carts stick together after colliding head-on. Find the final speed of..
A closely wound rectangular coil of 100 turns has dimensions of 20.0{\rm cm} by 50.0{\rm cm}. What is the average emf induced in the coil
the snow exerts a retarding force on the sled that points opposite to the direction of motion, and has a magnitude of 57. Find out the acceleration of the sled and child.
A certain EM wave has a wavelength of 4 X 10 ^-7 m and a speed of 2.5 X10^8 m/s in a partcular material ( not a vacuum). what is the wavelength of this wave in a vacuum
A 645N woman climbs a staircase that rises at 50 degrees above the horizontal and is 4.95m long. Her speed is a constant 40.0cm/s. How much work has gravity done on her as she climbed the stairs
A 630-Hz sound travels through pure hydrogen. What is the speed of sound in hydrogen
A ball is thrown straight up from the ground with an initial velocity of 39.2 m/s; at the same instant, a ball is dropped from the roof of a building 27.7 m high - After how long will the balls be at the same height?
Under some circumstances, a star can collapse into an extremely dense object made mostly of neutrons and called a neutron star. If the original star rotated once in 35 days, find the angular speed of the neutron star
A U-shaped tube is connected to a box at one end and open to the air at the other end. What is the gas pressure inside the box
let ?1 and ?2 be the ground state and first excited state wave functions for a particle in a deep potential well of width L. calculate the uncertainty in momentum
A 170g baseball is pitched at 30m/s spinning at 53rad/s . You can treat the baseball as a uniform solid sphere of radius 4.5cm. What fraction of its kinetic energy is rotational
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