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A rock is launched with an initial velocity of 17 m/s at an angle of 26 degrees above the horizontal. What is the horizontal component of its velocity?
A 4.2 kilogram ball with a velocity of 4.2 m/s in the +x-direction collides head-on elastically with a stationary 2.0 kilogram ball. Evaluate the speed of the second ball after the collision
A 55m/s wind blows over a flat roof. The house is 4.2m tall, 6.2m wide and 12.4m long. Estimate the minimum mass of the roof
a diverging lens has a focal length of -32 cm. an object is placed 27 cm in front of this lens. calculate a the image
A block slides down an inclined plane of slope angle ? with a constant velocity. How far up the incline will it move before coming to rest
two forces act on a 55 kg object. one force has magnitude 65 n directed 59deg clockwise from the positive x-axis and
An oscilloscope shows a steady sinusoidal signal of 5 Volt peak to peak, if we have voltage knob on 2 volts per division, how many divisions will be read on the screen
A horizontal mass-spring system is in SHM. The mass is 0.25kg, the spring constant is 12N/m, and the amplitude is 15cm, What is the maximum speed of the mass and where does it occur
A 4 kg block, resting on a horizontal surface, is struck by a bullet moving horizontally with a speed of 200 m/s. How much energy is dissipated (mostly as heat) in this collision process
a car is initially moving at 60 ms and must stop in 100 m. what minimum constant acceleration must the car
A house painter stands 3 m above the ground on a 4.9-m-long ladder that leans against the wall at a point 4.7 m above the ground. find the force of friction that the driveway exerts on the bottom of the ladder
A gymnast was practicing an airborne movement and you filmed it in two dimensions. the mass of the lower body of the gymnast is 15kg, the mass of the trunk and arms is 20kg, and the mass of the head is 8kg.
a charge of 25 nc is uniformly distributed along a circular arc radius 2.0 m that is subtended by a 90-degree angle.
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