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Assume that the area of contact between an automobile tire and the road is a rectangle with dimensions 17.5 cm cross 6.5 cm. What tire pressure is needed to support a car of mass 1100 kg?
What would a tire pressure gauge read in pounds per square inch (lb/in^2)?
A satellite is in a circular orbit around an unknown planet. The satellite has a speed of 1.60 104 m/s, What is the orbital speed of the second satellite?
a heater coil connected to a 240 v ac line has a resistance of 58 .a what is the average power used?b what is the
A body oscillates with simple harmonic motion according to x = (8.5 m) cos[(5.0pi rad/s)t + pi/3 rad]. What is the phase of the motion
A toroid having a 7.2 cm square cross section and inside radius of 22.8 cm has 170 turns of wire and carries a current of 1.8 A. What is the magnetic flux through the cross section
After watching a news story about a fire in a high rise apartment building, you and friend decide to design an emergency escape device from the top of a building. To avoid engine failure, your friend suggest a gravitational powered elevator. calcu..
An elephant that has a mass of 7000 kg evenly distributes her weight on all four feet. estimate the pressure on each foot
Alpha Centauri, a star close to our solar system, is about 4.3 light years away. Suppose a spaceship traveled this distance at a constant speed of .90c relative to Earth. What is the trip distance according to the traveler
You are driving a car which is heading 30 m/s towards a brick wall. You sound a horn which emits at a frequency of 410 Hz when at rest. What is the beat frequency that you hear
a man and a boy are carrying a uniform wooden beam that is 8 m long and weighs 900 n. the boy lifts at one end. at
A fireman, 25.6 m away from a burning building, directs a stream of water from a ground level fire hose at an angle of 39.5° above the horizontal
A highway curve with a radius of 550 m is banked properly for a car travelling 130 km/h. If a 1660- kg Porshe 928S rounds the curve at 250 km/h, how much sideways force should the tires exert against the road if the car does not skid.
A 0.726-kg rope 2.00 meters long lies on a floor.You grasp one end of the rope ane begin lifting upward with a constant speed of 0.710m/s.
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