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An 80.0 N box is pulled 19.0 m up a 30° incline by an applied force of 97 N that points upward, parallel to the incline. If the coefficient of kinetic friction between box and incline is 0.220, calculate the change in the kinetic energy of the box.
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A Geosync TV satellite of mass 2000 kg is in a circular orbit around the earth, making one revolution or orbit every 24 hrs, What is the magnitude of the centripetal acceleration
An 8.3kg crate is pulled 4.9m up a 30? incline by a rope angled 19? above the incline. What is the increase in thermal energy of the crate and incline
A crane which is effectively fixed to ground lifts a box of mass m with constant speed. The arm of the crane is supported at its base by a friction-free pivot. Determine the tension in the supporting cable
A child in a boat throws a 3.50 kg package out horizontally with a speed of 15m/s. Calculate the velocity of the boat immediately after, assuming it was initially at rest. The mass of the child is 25kg and that of the boat is 70kg. Ignore water re..
A hypothetical 40cm long arm is assumed to be weightless. What is the maximum weight that can be held in the hand if the muscle is attached 1 cm from the below
At a distance of 60.0km from a radio station antenna the electric-field amplitude is 8.80×10?2 V/m, Assuming that the antenna radiates equally in all directions (which is probably not the case), what is the total power output of the station
A 10.0 kg crate is pulled up a rough incline with an initial speed of 1.5 m/s. The pulling force is 100. find the work done by the Earth's gravity on the crate
Two large equipotent surfaces are flat and parallel and separated by a relatively small distance compared to their size. One surface is at 25 V and the other is at 33 V. The surfaces are 1.25 cm apart. What is the direction of the electric field m..
The isotope 204 Pb decays via alpha decay. The measured atomic mass of 204 Pb is 203.97304 u , Calculate the kinetic energy of the alpha particle
A magnetic field is perpendicular to the plane of a single-turn circular coil. The magnitude of the field is changing, so that an emf of 0.95 V, What emf and current are induced in the square coil
A Piece of ice of mass mi at 0 C is placed in water of mass mw at 20 C. The system is in a container of negligible heat capacity, what is the equilibrium temperature of the system
A 200 keV electron strikes a copper target and is brought to rest producing a single X-ray photon. What is the Compton scattering angle relative to the direction of the incident X-ray
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