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Before opening his parachute, a sky diver with a mass of 90.0 kg experiences an upward force from air resistance of 150 N.
(a) What net force is acting on the sky diver?
(b) What is the sky diver's acceleration?
A wire 3.00 m long and 0.450 mm2 in cross-sectional area has a resistance of 41 omegacap.gif at 20°C. what is the temperature coefficient of resistivity
A rotating wheel requires 5.00 s to rotate 26.0 revolutions. What is the constant angular acceleration (in rad/s) of the wheel
An earth satellite moves in a circular orbit with an orbital speed of 6100. Find the radial acceleration of the satellite in its orbit
Pool players often pride themselves on their ability to impart a large speed on a pool ball. they have placed you in charge of determining the speed of the players\' break shots
a crane drops a 1.0 kg steel ball onto a steel plate. the ball's speed just before impact is 2.0 m/s. what is the bounce back speed right after the impact
When you drop two balls at once, why doesn't only one marble come off the end twice as fast? Write down the kinetic energy of one marble with mass m and velocity 2v
An asteroid is moving along a straight line. A force acts along the displacement of the asteroid and slows it down. What is the work done by the force
What is the speed of the bullet.
A prism has a vertex angle of 60° and an index of refraction of 1.52. What is the minimum angle of incidence, measured away from the vertex
A skier starts from rest at the top of a hill that is inclined at 10.9° with respect to the horizontal. How far does the skier glide along the horizontal portion of the snow
A dumbbell is made of two spheres, which each have a mass M and a radius r - and a massless stick af length L. What is the torque acting on the dumbbell
A cart that has a mass of 100 kg goes around a vertical loop at a constant speed of 10 m/s. Determine the force that the seat pushes on you with v = 7r at the top of the loop
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