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A block with a mass of 8 kg is at rest on a horizontal surface. The coefficiant of static friction between the block and the surface is 0.25, and the coefficient of kinetic energy is 0.20. A force of 15 N acts on the block toward the left. What is the magnitude of the frictional force on the block.
Two metal balls A and B of negligible radius, connected by a taut nonconducting thread of length 2.40 m, are floating at rest on Space Station Freedom between two metal bulkheads. Ball A carries charge q, and ball B carries charge 2q.
A 9.0 Kg box of oranges slides from rest down a frictionless incline from a height of 5.0 m. A constant frictional force, introduced at point A, brings the block to rest at point B, 19 m to right of point A. What is the velocity of the box just be..
a box sits on a horizontal wooden board. the coefficient of static friction between the box and the board is 0.25. you grab one end of the board and lift it up, keeping the other end of the board on the ground. what is the angle between the board ..
A metal sphere is suspended by a silk thread and charged positively. If in carrying a positive charge of 5.0E-8 C, what is the potential difference between the ground and the sphere
What is average kinetic energy of each helium atom
A 1200 kg car is pulling a 500 kg triler along level ground. Friction is negligible. What is the magnitude of the force exerted by the car on the trailer
What is acceleration of an object sliding down to plane
Evaluate the magnitude of the apparent weight of a 84 kg astronaut 4500 km from the center of the Earth's Moon in a space vehicle accelerating toward the Moon at 3.1 m/s^2?
Ligh of wavelength 610 nm is incident on a slit 0.20 mm wide, what is the width of the central maximum
A wire carries a current of 0.665 A. This wire makes an angle of 55.5° with respect to a magnetic field of magnitude 4.92E-5 T, What is the length of the wire
A rescue helicopter lifts a 90-kg person straight up by means of a cable, What is the tension in the cable and How much work is done by the tension in the cable
An electric field of 220000 N/C points due west at a certain spot. What is the magnitude of the force that acts on a charge of -10C at the spot.
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