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A 7.93 kilogram box is pulled along a horizontal surface by a force F_P of 84.0 Newton applied at a 47 degree angle. If the coefficient of kinetic friction is 0.35, obtain what is the acceleration of the box?
A small ball with a mass of 55.0 g is loaded into a spring gun, compressing the spring by 15.0 cm. When the trigger is pressed, the ball emerges horizontally from the barrel at a height of 1.70 m above the floor.
A girl rides the escalator that moves foward at a constant speed. As the girl raises, how do her gravitational energy and kinetic energy change.
Two point charges totalling 7.00 µC exert a repulsive force of 0.300 N on one another when separated by 0.441 m. What is the charge on each? What is the charge on each if the force is attractive?
How much time will a batter have to decide to swing at a 90 mph pitch released 56 ft from the plate if it takes him 0.3 seconds to actually swing the bat?
A student sits on a swivel seat. Initially the student is at rest, holding a spinning bicycle wheel that has an angular velocity of 10.5 rad/s, Find the student's final angular velocity
two boats are heading away from shore. boat 1 heads due north at a speed of 3.13 ms relative to the shore. relative to
It's possible to estimate the percentage of fat in the body by measuring the resistance of the upper leg rather than the upper arm; the calculation is similar. A person's leg measures 39 cm between the knee and the hip, with an average leg diamete..
On the Moon, the average surface temperature is 127 ?C during the day and -183 ?C during the night. What is the corresponding change on the Fahrenheit scale
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When a current flows in an aluminum wire of diameter 2.45 mm, the drift speed of the conduction electrons is 1.05 × 10-4 m/s. What is the electron current in the wire
An infinitely long conducting cylinder of radius a carries a change qi per unit length. If ρ is the perpendicular distance from the axis of the cylinder. Find the scalar potential φ everywhere.
A vertical containery with base area measuring 14.0 cm by 17.0 cm is being filled with identical pieces of candy, each witha volume of 46.0 mm3 and a mass of 0.0208 g.
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