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A ball is launched at 21.9 m/s at an angle of 25 degrees above the horizontal from the top edge of a building 55.7 m high. How far from the edge of the building does the ball land and what is its speed when it hits the ground?
At the Earth's surface a projectile is launched straight up at a speed of 8.4 km/s. To what height will it rise
Starting from rest, a 91-kg firefighter slides down a fire pole. The average frictional force everted on him by the pole has a magnitude of 800 N, How far did he slide down the pole
Three negative charges of equal magnitude q are placed along a straight line, Find the electrostatic force on middle (second) charge
Three resistors, 20 %u03A9, 50 %u03A9, and 82 %u03A9, are connected in series, find the potential difference across this equivalent resistance
A 0.500-kg particle has a speed of 2.30 m/s at point A and kinetic energy of 7.40 J at point B a) what is its kinetic energy at pt A. b) what is its speed at pt B.
A 13kg box slides 4 m down the frictionless ramp , then collides with a spring whose spring constant is 180Nm.
A 2.0kg block of wood sits on a table. A 3.0 g bullet, fired horizontally at a speed of 360m/s, find the speed of the block immediately after the bullet exits
An aluminum cup contains 225 g of water and a 40 g copper stirrer, all at 27°C. Calculate the mass of the aluminum cup
What is the pressure amplitude of a sound wave with an intensity level of 121.5 dB in air
An elderly person with a body mass of 65 kg is walking while using a cane in one hand. what is the magnitude of the vertical ground reaction force
A certain star is 14 million light years from Earth. The intensity of light that reaches earth from the star is 4X 10^ -21 w/m^2
An open train car, with a mass of 2150 kg, coasts along a horizontal track at the speed 2.43 m/s. What is the car's speed after the loading is completed
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