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A cannonball is launched from the ground at an angle of 45o above the horizontal and a speed of 45 m/s. With no air resistance, find with what speed ball will land on the ground?
an officer sending men to the moon by firing a space capsule from a 220 m long cannon with final speed of 10.97 kms.
After 10.7 s, a spinning roulette wheel has slowed down to anangular velocity of 2.25 rad/s. Determine the angular displacement of the wheel
Two moles of an ideal diatomic gas have an initial pressure of 4:00 atm and initial volume of 16:0 L. What are the initial and final temperatures of the gas
A solar water heater for domestic hot-water supply uses solar collecting panels with a collection efficiency of 47.0% in a location where the average solar-energy input is 200 W/m^2...... If the water comes into the house at 15.0C and is to be heated..
When you drop a rock into a well you hear the splash 1.0 seconds later. How deep is the well
A bat at rest sends out ultrasonic sound waves at 53.5kHz and receives them returned from an object moving directly away from it, What is the received sound frequency
A police officer is investigating a crash between two identical cars of mass m = 1500 kg. What is the speed that the officer writes on the ticket
A transparent oil with index of refraction 1.29 spills on the surface of water (index of refraction 1.33), producing a maximum of reflection with generally incident red light (wavelength 700 nm in air). Assuming the maximum occurs in the first order;..
Water flows through a horizontal tube of diameter 2.9cm that is joined to a second horizontal tube of diameter 2.0cm . The pressure difference between the tubes is 7.6kPa
A rubber ball is dropped and bounces vertically from a horizontal concrete floor. what is the average force of the floor on the ball
The plates of a cathode ray tube are parallel and are 5 mm apart. What is the acceleration of the electron
A skater of mass 81.5 kg initially moves in a straight line at a speed of 5.30 m/s. The skater approaches a child of mass 35.0 kg, what is the skater's final velocity
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