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On a cool morning, when the temperature is 14 ^\circ{\rm C}, you measure the pressure inyour car tires to be 30 psi. After driving 50 mi on the freeway, the temperature of your tiresis 56 ^\circ{\rm C}.
What pressure will your tire gauge now show?
A step-down transformer is used to drop an alternating voltage from 10,000 to 500 V. What must be the ratio of secondary turns to primary turns? If the input current is 1.00 A and the transformer is 100% efficient, what is the output current?
During Charlie's golf drive, the angular velocity of his club is zero at the top of the backswing and 20 rad/s, What is the linear velocity of the club head just before impact with the ball
You are holding a bulletin board weighing 9.46 N in place against a wall while your friend secures it to the wall. How large must this force be if the coefficient of static friction with the wall is 0.37
A grandfather clock is controlled by a swinging brass pendulum thatis 1.0 m long at a temperature of30.°C. What is the length of the pendulum rod when the temperature drops to 0.0°C
A circular coil (500 turns, radius=.195m) is rotating in a uniform magnetic field. At t=0 s. Find the magnitude of the magnetic field at the location of the coil
Ricardo walks 22.0 in a direction 50.0 west of north. Jane walks 20.0 in a direction 30.0 south of west. They after that stop and turn to face each other.
The sun radiates energy at the rate of approximately 3.80 x 1026 W. Calculate the sun's loss of mass per day
A 285-kg stunt boat is driven on the surface of a lake at aconstant speed of 13.5 m/s toward a ramp, which is angled at25.0° above the horizontal. The coefficient of friction betweenthe boat bottom and the ramp’s surface is 0.150, and theraised end o..
Compressed air is used to fire a 52 g ball vertically upward from a 1.7-m-tall tube. How high does the ball go above the top of the tube
Your 85-kg friend (modeled in the picture as a box) is a window-washer and leans a ladder against a large frictionless window. What is the force from the wall on the ladder
the defenders of a castle throw rocks down on their attackers from a 11.5 m high wall. if the rocks are thrown with an
A Ferris wheel with radius 14.0m is turning about a horizontal axis through its center. What is the magnitude of the passenger's acceleration as she passes through the lowest point in her circular motion
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