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A car of mass 1,000 kg starts from rest and accelerates to a velocity of v = 24 m/s in a time interval of ?t = 11 seconds. If the acceleration is (approximately) constant, what force is needed for this acceleration? Give your answer in Newtons and to three significant figures.
A hill that has a 25.7% grade is one that rises 25.7 m, At what angle is such a hill inclined above the horizontal
A molecule in air is moving at a speed of 459 m/s. How various meters would the molecule move during 7ms if it didn't collide with any other molecules.
A solenoid 27.0cm long and with a cross-sectional area of 0.510cm2 contains 460 turns of wire and carries a current of 90.0A. Calculate the magnetic field in the solenoid
A bat strikes a 0.145-kg baseball. Just before impact, the ball is traveling horizontally to the right at a speed of 40.0 m/s , Find the vertical component of the average force on the ball
An elevator can lift a 185 N aircraft a distance of 36 meters in 11 s. What is the power output of the elevator
A small car with mass 0.690 travels at constant speed on the inside of the track that is a vertical circle with radius 5.00. If the normal force exerted by the track on the car when it is at the top of the track (point) is 6.00, what is the normal fo..
A loop of wire of area 2 m2 is placed with its plane perpendicular to a magnetic field of 3 T. what is the induced emf
A friend of yours who starts out at the same age as you travels to the alpha centauri solar system which is 4.70 light-years away. How fast did she travel
An ALkaline earth atom has 2 valance electrons. Both can be spin up and spin down. Write the singlet states
What is Kepler's First Law and in this experiment, there are eight pairs of photographs. In each pair, what things are the same in each? What things are different?
A square loop of wire consisting of a single turn is perpendicular to a uniform magnetic field. What is the flux that passes through the circular loop
How to find out the force of friction
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