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If the acceleration of a 75 kg skydiver is 4m/s2,
a. what is the net force on theskydiver?
b. what is the weight of the skydiver on the earth'ssurface?
c. what is the magnitude of the force of air resistance?
person leaning over a 124 m deep well accidentally drops a siren emitting sound of frequency 2430 hz. What beat frequency does this person perceive
A prosthetic leg has a mass of 3 kg and a center of mass of 20 cm from the knee joint. What is the moment of inertia about the knee joint
The cockroach finds a bread crumb on the rim and, of course, stops. What is an angular speed of the lazy Susan after the cockroach stops.
A 73.7-kg person puts on a life jacket, jumps into the water, andfloats. What is the density of the life jacket
A laser beam aimed from the earth is swept across the face of the moon. what is the angle of divergence of the laser beam
An accelerating voltage of 2415 V is applied to an electron gun, What are the magnitude and direction of the deflection on the screen caused by the Earth's gravitational field
Mandy is walking at a speed of 1.37 m/s directly toward one siren and directly away from another siren when they both begin to sound with a frequency of 650 Hz
A gardener pushes a 20kg lawnmower whose handle is tilted up 37degrees above horizontal. The lawnmower's coefficient of rolling friction is 0.20. How much power does the gardener have to supply to push the lawnmower at a constant speed of 1.4m/s ? As..
An object slides down a 30o angle slope from rest at a height of 15.0 m. What is the object's speed at the bottom of the slope
A metal sphere hangs from a string and has 4 kg of mass. The sphere has a charge of +2.3 µC. What is the electric force on the metal sphere if the magnitude of the electric field is 106 N/C
The image produced by a concave mirror is located 20 cm in front of the mirror. How far in front of the mirror is the object located
A 1089-kg car and a 2210-kg pickup truck approach a curve on the expressway that has a radius of 229 m. find the normal force on the car to the highway surface
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