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Picnickers see a lightning flash and hear the resulting thunder 9.5 s later. If the storm is traveling at a rate of 19 km/h, how long, in minutes, do the picnickers have before the storm arrives at their location?
The current thought about the formation of the Earth’s moon is that it is a result of a cataclysmic collision of a large body with the primitive Earth. Suppose that a body with a mass of 0.014 that of the Earth undergoes a totally inelastic collision..
A 50 kg block and a 100kg block are connected by string. the pulley is frictionless and of negligible mass. the coefficient of kinetic friction between the 50kg block and incline is 0.250. find the change in the kinetic energy of the 50kg block as..
A small ball is doing circular motion around a pole. The string connecting the pole and the ball is 30 degrees (?) away from the pole. Find the linear speed of the ball
Suppose a 76 kg person hangs vertically from a nylon rope. What radius must the rope have if its fractional increase in length is to be the similar as that of the spider's thread.
a spaceship approaches earth with a speed 0.38c. a passenger in the spaceship measures his heartbeat as 72 beats per
a virtual image is formed by a convex mirror that has a 30 cm focal length. where must the object be placed if the
A block with a mass of 40 kg is on an inclined plane with an angle of 20 degrees. Determine the normal force on the block
A wheel 2.25 m in diameter lies in a vertical plane and rotates about its central axis with a constant angular acceleration of 3.50 rad/s2, find the angular position of the point P
An emf is induced by rotating a 1000 turn, 20.0 cm diameter coil in the earth's 5.15 x 10-5 T magnetic field. What average emf is induced, given the plane of the coil is originally perpendicular to the earth's field and is rotated to be parallel to..
A stuntman testing a bungee-cord apparatus hangs a bag of sand from the bungee and pulls down to start the sand bag oscillating. What is the period of this motion
Calculate the magnitude of the electric field at the ground a distance of 5.0m from the wire.
An object is undergoing SHM with a maximum speed of 8.61 m/s and the maximum acceleration of 1.68 m/s2. What is the period of this motion
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