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A sailor strikes the side of his ship just below the waterline. Hehears the echo of the sound reflected from the ocean floor directlybelow 1.87 s later. How deep is the ocean at this point?
determine the time the inhabitants of alpha station. A woman who weighs 600N at earth's surface stands on top of a very tall ladder so she is one earth radius above earth's surface. how much does she weigh.
To help keep her barn warm on cold days, a farmer stores 900 kg of warm water in the barn. How many hours would a 3.50-kilowatt electric heater have to operate to provide the same amount of heat as is given off by the water as it cools from 20.0 C to..
a a capacitor c1 3muf is connected across a 19-v battery. the battery is removed and the capacitor is reconnected to
A golf ball of mass 0.045 kg is hit off the tee at a speed of 34m/s. Find the impulse imparted to the golf ball
Radioactive isotopes are often introduced into the body through the bloodstream. If the decay rate in the thyroid 24.0 d later is actually measured to be 17.0Bq , what percent of the tracer went to that gland
suppose after the ball reaches the ground ,it bounces back straight upwards at the speed of half of the speed that it hits the ground, calculate the maximum height that the ball bounces
Sam's speed at the bottom is 35.0. Illustrate what is the coefficient of kinetic friction of his skis on snow?
Explain how fast will he be moving backward just after releasing the ball?
A bullet of mass 5.2 g is fired horizontally into a 7.1 kg wooden block at rest on a horizontal surface. At what speed is the bullet fired
Write an equation for the magnetic flux through a coil as a function of the strength of the magnetic field and the angle between the area vector and the magnetic field direction? For what angle is this expression a max? Min? Zero?
There is a current of 0.83 A through a lightbulb in a 120 V circuit. What is the resistance of this lightbulb
a quarter diameter 2.40 cm is held at arms length 64.0 cm. the sun has a diameter of 1.39 x 109 m and is 1.50 x 1011 m
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