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An 18.3 kg block is dragged over a rough, horizontal surface by a constant force of 196 N acting at an angle of angle 31.4 ? above the horizontal. The block is displaced 82.8 m and the coefficient of kinetic friction is 0.105. Find the work done by the 196 N force. The acceleration of gravity is 9.8 m/s 2 . Answer in units of J. Find the magnitude of the work done by the force of friction. Answer in units of J. Find the work done by the normal force. Answer in units of J. What is the net work done on the block? Answer in units of J.
What will an object weigh on the Moon's surface if it weighs 200 N on Earth's surface? How many Earth radii must this same object be from the center of Earth if it is to weigh the same as it does on the Moon?
A 220g baseball is pitched at 25m/s spinning at 43rad/s. What fraction of its kinetic energy is rotational
a speeding motorist passes a stopped police car. at the moment the car passes the police car starts from rest with a
The normal force equals the magnitude of the gravitational force as a roller coaster car crosses the top of a 36--diameter loop-the-loop. What is the car's speed at the top?
A gravity station at a location of 0m is located in the center of an erosional basin. The floor of the basin has virtually no relief. An escaprment of a plateau is located at a distance of 3000m from the gravity station. The surface of the plateau..
A slender rod of length L and mass m is released from rest in the position shown. It is observed that after the rod strikes the vertical surface it rebounds to form an angle of 30° with the vertical.
To measure the static friction coefficient between a 4.33-kg block and a vertical wall, the setup shown in the drawing is used. A spring (spring constant = 461 N/m) is attached to the block.
What is the tangential acceleration of a bug on the rim of a10-inch diameter disk if the disk moves from rest to an angular speed of 99 rev/min in 3.0 s? When the bug in the previous problem is at his final speed of 99 rev/s , what is the tangential ..
A 2.40 kg object rotates around along a horizontal circle of radius r=0.720m. Obtain the centripetal acceleration and centripetal force
Four identical charges (+2.17mC (micro C) each) are brought from infinity and fixed to a straight line. The charges are located 0.373m apart. Decide the electric potential energy of this group.
The Concord airplane flies from the United States to Europe with aMach number of 1.05 where the air temperature is 5.0 degrees Celsius. What is the speed of the plane
In exercising, a weight lifter loses 0.143 kg of water through evaporation, the heat required to evaporate the water coming from the weight lifter's body. Determine the minimum number of nutritional Calories of food
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