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A skier of mass 65 kg skis straight down a 11° slope at constant velocity.
(a) Find the value of the normal force.
(b) The force of air resistance has a magnitude of 67 N. Find the frictional force on the skis.
(c) What is the coefficient of kinetic friction?
A wheel of radius .1m and mass of 20kg rotates at 100rpm. what constant angular acceleration must be applied to the wheel
An 86kg man drops from rest on a diving board 3.0m above the surface of the water and comes to rest 0.55s after reaching water. What is the net force on the diver as he is brought to rest.
A hot-air balloon is ascending at the rate of 12 m/s and is 84 m above the ground when a package is dropped over the side. Explain how long does the package take to reach the ground?
A beam of 12 cm microwaves strikes a surface glass with an index of 1.5 at an incident angle of 45 degrees. Compute the transmitting angle
a basketball player grabbing a rebound jumps 79cm vertically. how much total time (ascent and descent) does the player spend
A series RLC circuit has R = 50 %uF057, L = 2.7 %uF06DH, and C = 52 nF. What is the average power dissipated by the circuit
The catapult on an aircraft carrier can take an aircraft from 0 to 209 mph (the launch speed) in 9 seconds, at which time the aircraft launches
A circular coil 18.0cm in diameter and containing nine loops lies flat on the ground. The Earth's magnetic field at this location has magnitude 5.50×10?5T, Determine the torque on the coil
A mortar crew is positioned near the top of a steep hill. Enemy forces are charging up the hill and it is necessary for the crew to spring into action.
Use approximate calculations assuming constant current during the output pulse. Calculate the ampere-hour rating of the battery so it lasts for five years.
A rectangular loop is located next to a long straight wire carrying a current of 30.0 A. What is the direction of the net force on the loop
An alpha particle, which is a helium nucleus, has a mass of 6.64*10^-27 kg. It is travleing horizontally at 42.3 km/s when it enters a uniform, What is the diameter of the path followed by the alpha particle
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