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vector 30 degrees west of north that is 6N and a vector at east with 10N. Find the net force vector Fnet and acceleration vector a. Mass m=2 kg
If a person standing inside an elevator is moving up at uniform speed of 4m/s what is the normal force on her feet? Weight of the person is 60kg.
A mouse is running away from a cat at 0.75 m/s and, at 1.25 m from his mouse hole, he accelerates at a constant rate of 0.25 m/s2 until he reaches his hole safely. How long a time was required for him to cover the last 1.25 m?
As part of a circuit act, a person drives a motorcycle with constant speed v around the inside of a vertical track of radius r. If the combined mass of the motorcycle and rider is m, find the normal force exerted on the motorcycle by the track at ..
A town is installing a new 10” main to carry drinking water. The only section remaining to be installed is a segment through the middle of town. Calculate the length of pipe required for the pipe system.
A 1.80x10^2 kg piano is being lifted at a steady speed from ground level straight up to an apartment 18.00 m above the ground. The crane that is doing the lifting produces a steady power of 4x10^2 W. How much time does it take to lift piano.
Finally a thin rod of mass 7 kg is added between the two particles Since the particles are moving perpendicular to the line separating them, What the angular frequency of rotation of the rod + particles system
A 35kg child slides down a playground slide at aconstant speed, The slide has a height of 4.0mand is 7.4m long, find the magnitude of the kinetic friction force acting on the child
Light of wavelength 189 nm shines on a metal surface. 3.94 eV is required to eject an electron. What is the cutoff wavelength for this metal
An object weighs 277 N in the air. When tied to a string, connected to a balance, and immersed in water, it weighs 221 N. When it is immersed in oil, it weighs 257 N.
A soccer player extends her lower leg in a kicking motion by exerting a force with the muscle above the knee in the front of her leg. What is the force exerted by the muscle if its effective perpendicular lever arm is 2.10 cm
A copper wire has a total lenght of 28m. Half of the wire has a cross-sectional area of 6 mm^2, what is the current through this wire
A 10 g bullet traveling at 430m/s strikes a 13kg , 1.1-m-wide door at the edge opposite the hinge, What is the angular velocity of the door just after impac
If the operators of a spy satellite pondered using it to photograph license plate numbers. what is the smallest distance between two points that it can resolve
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