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An automobile is going up a 15o grade at a speed of 30 m/s. The coefficient of static friction b/w the tires and the road is 0.70. Obtain what minimum distance does it take to stop the car? Obtain what minimum distance would it take to stop if the car were going down the grade?
A cat is trying to jump onto a countertop that is 1m tall from 0.3m away. The cat's initial jump speed (magnitude of the total initial velocity) is 10m/s
A 12,600-kg railroad car travels alone on a level frictionless track with a constant speed of 15.8 m/s. What will be the car's new speed
Electronic types neglect the force of gravity on electrons. To see why, compute the force of Earth’s gravity on an electron and compare it with the force exerted on the electron by an electric field of magnitude 10,000 V/m.
The gauge pressure at the bottom of a reservoir is 7.0 times what it is at a depth of 1.3 m. How deep is the reservoir
assuming the specific heat of the body is the same as water calculate the temperature rise due to a total body dose of
A 0.300 kg ball is thrown vertically upward with an initial speed of 16.0m/s. What is the maximum height reached by the ball
two point charges are distance d 43.5 cm apart they have equal and opposite charge each with magnitude q 8.94 oc. the
A pendulum is constructed by attaching a small metal ball to one end of a 1.25 m long string that hangs from the ceiling. the ball is released when it is raised high enough for the string to make an angle of 30.0 degrees with the vertical. how fast i..
As Achilles approaches Boagrius, Boagrius throws his spear at Achilles. Find what was the average force acting on the 4.5 kg spear
A cycle receives 500 Btu of heat at 1000°F and rejects 200 Btu of heat at 200°F. There is work input of 275 Btu and work output of 575 Btu. Compute the cycle efficiency
In order for the elevator to push us down, what directin must that force be in? Is it doing any pushing at that time and how then do the normal forces line up?
A two-stage rocket moves in space at a constant velocity of +4260 m/s. The two stages are then separated by a small explosive charge placed between them. Immediately after explosion the velocity of the 1360-kg upper stage is +5970 m/s.
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