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Kids at a swimming hole swing over the water on a tire swing (essentially a simple pendulum) and then drop in the water. If the tire+kid takes 2.0 seconds to swing from the launching point to its farthest point over the water, how long will it take the empty tire to return for the next kid? Assuming the tire is launched without a push from its highest point, what is the frequency of the tire-swing-pendulum (unloaded)? How long is the rope?
Huck Finn walks at a speed of .6m/s across his raft (that is perpendicular to the raft's motion relative to the shore). what is Huck's velocity(speed and direction) relative to the river bank
A long solid cylindrical wire of radius 0.01 meters carries a current whose density (current per unit area) is given by J=0.02r^2.
A 40 N crate starting at rest slides down a rough 6m long ramp inclined at 30 degrees with the horizontal. find the velocity of the crate at he bottom of the incline
A hunter wishes to cross a river that is 2.0 km wide and flows with a speed of 5.0 km/h parallel to its banks. What is the minimum time necessary for crossing
question a rectangular piece of paper is folded so that one corner lands on the opposite corner. the crease is as long
question the ratio of times taken by a cyclist to travel along the outer and inner perimeter of a circular path is 2322
A stationary radar operator determines that a ship is 11.00 km south of him. An hour later the same ship is 24.0 km southeast. If the ship moved at constant speed and always in the same direction, what was its velocity for the duration of this tim..
A sound wave travels in air toward the surface of a freshwater lake and enters into the water. The frequency of the sound does npt change when the sound enters the water. The wavelength of the sound is 2.49 m in the air, and the temperature of bot..
A massless spring hangs from the ceiling with a small object attached to its lower end. The object is initially held at rest in a position yi such that the spring is at its rest length. The object is then released from yi and oscillates up and dow..
A 35.0-cm-diameter circular loop is rotated in a uniform electric field until the position of maximum electric flux is found. evaluate the magnitude of the electric field
The magnitude of the force the sun exerts on Uranus is 1.41X10^21 newtons. Explain how it is possible for the sun to exert a greater forceo n Uranus then Neptune exerts on Uranus. A 2.0 kg object is falling freely near Earth's surface. What is the ..
Identical blocks are projected up each track with the same initial speed v0. On the longer track the block slides upward until it reaches a maximum height H above the ground. find the total height for the block on the shorter track
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