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Alice throws a ball up in the air with an initial speed of 15m/s, 5m from a vertical wall . The initial velocity makes an angle of 30o with the vertical direction. After the ball hits the wall, the horizontal component of the velocity is reversed but the vertical component does not change. How far from Alice will the ball land on the ground?
A 1.0-kg block is pushed up a rough 22° inclined plane by a force of 7.0 N acting parallel to the incline. Determine the magnitude of the force of friction acting on the block
A ball of mass 0.275kg that is moving with a speed of 5.1m/s collides head-on and elastically with another ball initially at rest. Calculate the velocity of the target ball after the collision
A 160(ohm) resistor is in series with a 8.00×10^-2 H inductor and a 0.400uF capacitor. compute the phase angle of the source voltage with respect to the current
At the SPS Pumpkin Drop, the pumpkins falling from Butte Hall take about 2.1 seconds to reach the ground. What is the height of the stairwell from which they are being dropped
a camera lens with a focal length of 50mm and aperture of f1.4 is used to image a scene. the photographer focuses the
The far point of a nearsighted person is 5.0m from her eyes, and she wears contacts that enable her to see distant objects clearly. A road sign is 20.0m away and 2.5m high, (a) When she looks through the contacts at the sign, what is its image dis..
A monochromatic light source emits a wavelength of 490 nm in air. When passing through a liquid, What is the liquid's index of refraction
A car is traveling at 15 m/s on a horizontal road. The coefficient of kinetic between the tires and road is
Two rockets, A and B, approach the earth from opposite directions at speed 0.60c. What is the length of rocket A as measured by the crew of rocket B
The average density of the planet Venus is 5219 kg/m3. The acceleration of gravity on its surface is 8.84 m/s2. Calculate the average radius of Venus
What is its angular acceleration - What is the density of the material is the density of water is 1000 kg/m3?
A 55.1-kg ice skater is moving at 3.99 m/s when she grabs the loose end of a rope, the opposite end of which is tied to a pole. Determine the force exerted by the horizontal rope on her arms
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