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Two spherical objects with a mass of 6.86 kg each are placed at a distance of 3.06 m apart. How many electrons need to leave each object so that the net force between them becomes zero?
Two small spheres spaced 20centimetres apart have equal charge. How many excess electrons should be present on each sphere if magnitude of the force of repulsion between them is newtons.
An object, mass 1.48 kg, moves in a horizontal circle with a radius of 1.52m. The object has an intial velocity of 28.0 m s-1. If the kinetic coefficient of friction between object and surface is 0.382.
Three deer, A, B, and C, are grazing in a field. Deer B is located 64.4 m from deer A at an angle of 53.8 ° north of west. Deer C is located 76.2 ° north of east relative to deer A. The distance between deer B and C is 96.8 m. What is the distance be..
A sled weighs 100N. It is held in place on a frictionless 20 degrees slope by a rope attached to a stake at the top, the rope is parallel to the slope. What is the normal force of slope acting on the sled.
A 9.22 kg ball, hanging from the ceiling by the light wire 145.00 cm long, is struck in an elastic collision by a 1.20 kg ball moving horizontally at 6.46 m/s just before the collision.
An airplane flies due south at 190-km/h relative to the air. There is a wind blowing at 73.0 km/h to the east relative to the ground. What are the plane's speed and direction relative to the ground.
An 82 kg parachutist descends through a vertical height of 350 m with constant speed. Find out the increase in entropy produced by the parachutist; assume the air temperature is 21 degrees C.
A 59.0 kg skateboarder wants to just make it to the upper edge of a "quarter pipe," a track that is one-quarter of the circle with a radius of 3.80 m.
A 0.7 kg block of ice is sliding by you on a very slippery floor at 3.5m/s. As it goes by, you give it a kick perpendicular to its path. Your foot is in contact with ice block for 0.003 seconds.
Carry out the following arithmetic operations: (a) sum of the measured values 756, 37.2, 0.83 and 2.5. The answer must be in significant digits. Since 2.5 and 0.83 have two significant digits, shouldn't the answer be 800 instead of 797.
What is the weight of the displaced amount of water when the boulder is placed inside the tank (measured in N)? The tank had an original volume of water of 5000 L. while the boulder got placed inside the tank, the volume of water rose to 5010.165 ..
Conclude the magnitude of angular acceleration
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