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A 41.2-kg boy, riding a 2.65-kgskateboard at a velocity of +5.27 m/s across a level sidewalk,jumps forward to leap over a wall. Just after leaving contact withthe board, the boy's velocity relative to the sidewalk is 5.52m/s, 8.64° abovethe horizontal. Ignore any friction between the skateboard and the sidewalk. What is the skateboard's A 41.2-kg boy, riding a 2.65-kg skateboard at a velocityof +5.27 m/s across a level sidewalk, jumps forward to leap over a wall. Just after leaving contact with theboard, the boy's velocity relative to the sidewalkis 5.52 m/s, 8.64° above the horizontal. Ignore anyfriction between the skateboard and the sidewalk. What is the skateboard's velocity relative to the sidewalk at this instant? Besure to include the correct algebraic sign with your answer.? (Besure to include the correct algebraic sign with youranswer.)
A 6" (nominal pipe size) schedule 40 steel pipe has a chamfered entrance and 300 ft. long. what is the total loss of head
As a 2.0-kg block travels around a 0.50-m radius circle it has anangular speed of 12 rad/s. The circle is parallel to the xy plane and is centered on the z axis, adistance of 0.75m from the origin. The z component of the angular momentum around th..
A 1500-kg car accelerates from 0 to 25 m/s in 7.0 s. What is the average power delivered by the engine
The weight of your 1205-kg car is supported equally by its four tires, What gauge pressure is required to give an area of contact of 112 cm2 for each tire
A 5.1 foot-tall girl stands on level ground. The sun is 23 Degrees above the horizon. How long is her shadow
A grindstone of radius 4 m is initially spinning with an angular speed of 8 rad/s. The angular speed is then increased to 10 rad/s over the next 4 seconds. Imagine that the angular acceleration is constant.
A motorist drives south at 27.0 m/s for 3.90 min, then turns west and travels at 25.0 m/s for 2.40 min, and finally travels northwest at 40.0 m/s for 1.00 min. For this 6.40 min trip, find the values.
Two physical pendulums (not simple pendulums) are made from meter sticks that are suspended from the ceiling at one end. Determine the period of the metal pendulum
Two stars in a binary system orbit around their center of mass. The centers of the two stars are 7.30 x 10^11 m apart. What is the mass of the smaller star
A block of unknown mass is attached to a spring with a spring constant of 6.00N/m and undergoes simple harmonic motion with an amplitude of12.5cm. Calculate the maximum acceleration of the block
2150 kg satellite is in a circular orbit 780 km (780 x 103 m) above the surface of the earth. What is the speed of the satellite in its orbit
A 0.8 kg object that stretches a spring 7.3 cm from its natural length when hanging at rest oscillates with an amplitude of 7.3 cm. Find the total energy of the system. The acceleration due to gravity is 9.81 m/s2. Find the gravitational potential en..
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