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A round wooden log with a diameter of 85 cm floats with 18%of its radius out of the water. What is the log's density?
A 70.0 kg football player leaps straight up into the air (with no horizontal velocity) to catch a pass. how fast was the ball travelling
You are designing a delivery ramp for crates containing exercise equipment. The crates of weight 1470N will move with speed 2.2m/s at the top of a ramp that slopes downward at an angle 25.0degrees.
A certain lightbulb has a tungsten filament with a resistance of 17.7 ? when at 20.0°C and 135 ? when hot. Find the temperature of the hot filament
A lab team rides a ski lift to the top of the mountain, due to some congestion their ears fail to pop, that is the pressure inside the ear does not equalize with the outside atmosphere. Calculate the force on the eardrum
Eight lights are connected in parallel to a 116 V source by two leads of total resistance 1.1. If 240 mA flows through each bulb, what is the resistance of each? What fraction of the total power is wasted in leads.
In 1581, when Galileo was 17 years old, he noticed one morning at the Cathedral in Pisa (just next door to the leaning tower) that after the chandeliers were lit several of them oscillated back and forth with different amplitudes, How long was the..
A massless spring with spring constant 9.60 N/m hangs vertically. A body of mass 2.70 kg is attached to its free end and then released. Calculate the amplitude of the motion and frequency
Mercury flows through a horizontal pipe 1.05 cm in diameter and 1.3 m long. determine the rate of flow through the tube
In a two-dimensional tug-of-war, Alex, Betty, and Charles pull horizontally on an automobile tire at the angles, What is the magnitude of Betty's force
A horizontal pipe contains water at a pressure of 140kPa flowing with a speed of 1.2m/s . The pipe narrows to one-half its original diameter. What is the speed of the water
In a classic clip on America's Funniest Home Videos, a sleeping cat rolls gently off the top of a warm TV set. (Ignore air resistance and consider upward motion to be positive with zero at the top of the TV).
A nearsighted patient's far point is 0.521 m from her eyes. What is the distance between her eyes and the glasses
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