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Consider a car which weighs about 2000 kg and is parked at an elevation of 30 m above the bottom of a hill with a constant slope equal to -.5.
a) what is a horizontal component of the force on the car?
b) estimate the final kinetic energy which the car would have it its brakes gave away and it freely rolled down to the bottom the hill.
c) Estimate the final speed of the runaway car in both m/s and in mph units.
A 1089-kg car and a 2210-kg pickup truck approach a curve on the expressway that has a radius of 229 m. find the normal force on the car to the highway surface
a 2kg block of wood slides on the surface shown. all surfaces are frictionless, except the trough which is rough; the coefficient of kinetic friction there is 0.2 and the trough is 15m long. where will the block come to rest
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Galaxy A is moving away from us with a speed of 0.80c relative to the earth. How fast is galaxy A moving according to an observer in galaxy B
A model rocket rises with constant acceleration to a height of 3.8 m, at which point its speed is 24.0 m/s. How much time does it take for the rocket to reach this height
A massless spring with spring constant 22.10 N/m hangs vertically. A body of mass 0.280 kg is attached to its free end and then released. Assume that the spring was unstretched before body was released. How far below the initial position does the ..
A parallel-plate capacitor is formed from two 9.10cm x 9.10cm electrodes spaced 2 mm apart. The electric field strength inside the capacitor is 5.00*10^6 . What is the charge (in nC) on each electrode ?What is the final velocity of the electron.
You are testing a new amusement park roller coaster with an empty car with mass 113 kg. calculate how much work is done by the friction
A 1.6mH inductor is connected in parallel with a variable capacitor. The capacitor can be varied from 100 pF to 200 pF. find the maximum oscillation frequency for this circuit
The power output of a cyclist moving at a constant speed of 4.8 m/s on a level road is 140 W. What is the force exerted on the cyclist and the bicycle
When a tuning fork of frequency 360 Hz is held above a tube filled with water the resonances are found when the water level is at 25cm and 75cm
A proton is passing the origin. The magnetic field at the (x,y,z) position ( 2mm , 0 mm, 0 mm) is1.4×10?13?^T. What is the speed of the proton
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