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A 141 kg block is released at a 4.9 m height as shown. The track is frictionless except for a portion of length 7.3 m . The blocktravels down the track, hits a spring of force constant k = 1042N/m . The coefficient of kinetic fric- tion between surface andblock over the 7.3 m track length is 0.51 . The acceleration of gravity is 9.8 m/s2 .Determine the compression of the spring x from its equilibrium position before coming to rest momentarily. Answer in units ofm.
Scientists have found evidence that Mars may once have had an ocean 1.00km deep. What would be the gauge pressure at the bottom of such an ocean
twin brothers each of mass 50 kg sit in a symmetric canoe of mass 40 kg. each boy sits 1.5m from the center of the canoe as they toss a basketball(mass= .60kg) back and forth. how much does the center of canoe move as the ball moves from one brothe..
The half life for the alpha decay of uranium 238 is 4.47x10^9 yrs old. Determine the age (in years) of the rock specimen that contains 60% of its original number of Uranium 238 atoms.
If the Earth were to suddenly stop revolving around the Sun the gravitational force that the Sun exerts on the Earth would cause the Earth to "fall" directly into the Sun
Jill ( 60kg) is swinging on a rope swing that is 4m long, at what frequency does Jill need to pump her legs to get the swing going higher
1. a 4 uf capacitor has a potential difference between the plates of 150. how much carge is on each plate?2. a 5.0 v
light is incident of the surface of metallic sodium whose work function is 2.3 ev. the maximum speed of the
A submarine is 309 m horizontally out from the shore and 149 m beneath the surface of the water. find the height of the building
A girl is sledding down a slope that is inclined at 30º with respect to the horizontal. The wind is aiding the motion by providing a steady force of 184 N that is parallel to the motion of the sled.
a lamp is suspended by a massless string from the ceiling of a descending elevator which decelerates at 1.7 ms2. if the
A bungee cord is stretched between two poles with a force of 415 N. What is the velocity of a wave on this bungee cord
A 96.0 Kg man stands on a bathroom scale in an elevator that is accelerating upward at a rate of 1.90m/s^2. What is the bathroom scale reading in lbs
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