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One swimmer in a relay race has a 0.49 s lead and is swimming at a constant speed of 3.97 meter per second. The swimmer has 57.7 meter to swim before reaching the end of the pool. A second swimmer moves in the similar direction as the leader. Determine what constant speed must the second swimmer have in order to catch up to the leader at the end of the pool?
A wire 3.00 m long and 0.450 mm2 in cross-sectional area has a resistance of 41 at 20°C. what is the temperature coefficient of resistivity
A 70 kilogram woman stands at the rim of a horizontal turntable having a moment of inertia of 540 kg•m2 and a radius of 2.0 meter. Find how much work does the woman do to set herself and the turntable into motion
The rectangular metal loop in following figure has a resistance of 2? except the 0.5W, 0.1A bulb attached to it. What is the direction of current flow
A crate of mass 11.5 kg is pulled up arough incline with an initial speed of 1.50 m/s. The pulling forceis 100 N parallel to the incline, which makes an angle of16.0° with the horizontal. The coefficient of kinetic friction is 0.400, and the crate..
A 1600-kg car starts from rest to reach 60.0 miles/h in 6.50 s. What is the engine's power output, How much work is done by the engine during the acceleration
A girl delivering newspapers covers her route by traveling 10.00 blocks west, 4.00 blocks north, and then 2.00 blocks east. What is the total distance she travels
A research group plans to construct an engine that extracts energy from the ocean, using the fact that the water temperature near the surface is greater than the temperature in deep water. what is the maximum efficiency such an engine could have
a billiard ball ,moving at 75cm/s hits an identical ball initially at rest and glances off at 75degrees to the original direction with a speed of 30 cm/s
a Dog Sit 1.5m from the center of a merry go round. The Merry Go Round is Set in Motion,The Dog tangential speed is 1.5m/s. What is The Dog's Centripetal acceleration
questionyou are part of a team to help design atrium of a new building. your boss manager of the project wants to
a thin metallic spherical shell of radius 40.1 cm has a total charge of 7.65 ?c uniformly distributed on it. at the
On a distant planet, golf is just as popular as it is on earth. On the distant planet, what is the maximum height of the ball
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