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A person pulls a 5.0 kg sled by a rope across a floor. The coefficient of kinetic friction between the floor and the sled is 0.15. The rope (and therefore the force) is oriented 22 degrees above the horizontal. The magnitude of this force is 25N. What is the horizontal acceleration of the sled? What is the magnitude of the normal force?
In a TV-show, an inexperienced doctor touches the electrodes of a defibrillator and gets thrown across the room, what is the maximum height above ground he could reach
Two identical conducting spheres are separated by a fixed center to center distance of 45 cm and have different charges, Find the inital charge on the spheres
A point charge of 8.40 mC is surrounded by an equipotential surface with a radius of 0.298 m. What is the electric potential on the surface
A speedboat moving at 33.0 m/s approaches a no-wake buoy marker 100 m ahead. How long does it take the boat to reach the buoy
irplane A , starting from rest with constant acceleration, requires a runway 600m long to become airborne. How long must the runway be for airplane B
A 151 kg rocket moving radially outward from Earth has a speed of 5.03 km/s when its engine shuts off 226 km above Earth's surface. (a) Assume negligible air drag; find the rocket's kinetic energy when the rocket is 535 km above Earth's surface. (b) ..
An air-track glider attached to a spring oscillates between the 8.00 mark and the 69.0 mark on the track. The glider completes 10.0 oscillations in 40.0 .
Find the average force of the water on the diver. The swimmer comes to a stop 4 m below the surface. Find the average net force acting on the diver as coming to a stop in the water.
A 0.080 T magnetic field is perpendicular to a circular loop of wire with 100 turns and radius 30cm. what is the magnitude of the induced emf
Light of wavelength 659.4 nm is emitted by a star. The wavelength of this light as measured on Earth is 661.4 nm. How fast is the star moving with respect to Earth
A sled weighing 1.0 X 10^2 N is held in place on a frictionless 20.0 degree slope by a rope attached to a stake at the top. The rope is parallel to the slope. What is the normal force of the slope acting on the sled.
When the water turns to ice during the night, heat is free into the plants, thereby giving them a measure of protection against the falling temperature. Assume a grower sprays 7.64 kg of water at 0°C onto a fruit tree.
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