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A 75.0 kg stunt man jumps from a balcony and falls 26.5 m before colliding with a pile of mattresses.If the mattresses are compressed 0.950m before he is brought to rest, what is the average force exertedby the mattresses on the stuntman?
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A magnifying glass of diameter 10.5 cm focuses sunlight into a spot of diameter 0.550 cm. What is the energy flux in the local spot
A two mmeter high tank is full of water. A hole appears at its middle. What is speed of efflux
An air-filled toroidal solenoid has a mean radius of 14.0cm and a cross-sectional area of 6.80cm2. How many turns does the winding have
A mass is attached to a spring. It oscillates at a frequency of 4/? Hz when displaced a distance of 7.00 cm from equilibrium
Someone's weight while standing on the Earth's surface is m x g, where g has the familiar surface value of 9.80 m/s^2. Find an algebraic epxression for your weight
A metal object has a net charge of 1.761 x 10-12 C. How many excess or missing electrons does it have
1 mole on an ideal gas is at a pressure of 10 atm and a temperature of 30C. What is the volume of that gas in cubic meters
A hockey puck moving at 33m/s slams through a wall of snow 38cm thick. It emerges moving at 19m/s. find the thickness of a snow wall
A beam of unpolarized light shines on a stack of five ideal polarizers, set up so that the angles between the polarization axes of pairs of adjacent polarizers are all equal. The intensity of the transmitted beam is reduced from the intensity of the ..
A diverging lens (f = -11.0 cm) is located 25.0 cm to the left of a converging lens (f = 36.0 cm). What is the height of the final image
A sonar generator on a submarine on the ocean surface produces periodic ultrasonic waves at a frequency of 2.50 MHz. How deep is the ocean floor
When any radioactive dating method is used, experimental error in the measurement of the sample's activity leads to error in the estimated age. In an application of the radiocarbon dating technique to certain fossils, an activity of 0.10 Bq per gr..
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