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The spring in a clothespin is compressed 0.40 cm, storing energy in the form of spring potential energy. If the spring is compressed twice as far, the spring potential energy increases with 0.0046 J. What is the force constant, k, for this spring?
A 17,000-kg airplane lands with a speed of 82 m/s on a stationary aircraft carrier deck that is 115 m long. Find the work done by no conservative forces in stopping the plane.
A bicycle rim has a diameter of 0.65 {\rm m} and a moment of inertia, gauged about its center, of 0.25 {\rm kg}\cdot{\rm m^2}.What is the mass of the rim? Express your answer to two important figures and include the appropriate units.
An object attached to a horizontal spring is oscillating back and forth along a frictionless surface. Determine how much time elapses between an instant when the object's speed is at a maximum and the next instant when its acceleration is at a maxi..
A painter wishes to know whether or not he can safely stand on a ladder. Determine the maximum mass of the painter for which the ladder will remain stable when he climbs a distance d =4.9 meter up the ladder
What is the probability that a test comes back positive-indicating oil and what is the probability that there is oil in teh ground, if the test comes back positive?
he lifting force exerted on an airplane wing varies jointly as the area of the surface and the square of the planes velocity. Determine the lift if the speed is decreased to 80 mph
A basketball player makes a jump shot. The 0.550 kilogram ball is released at a height of 2.10 meter above the floor with a speed of 7.00 m/s. Determine the work done on the ball by air resistance
A block with a coefficient of kinetic friction μk =0.4 slides down a 30 degree inclined plane. Estimate what acceleration does it experience
There is a clever kitchen gadget for drying lettuce leaves after you wash them. Obtain the magnitude of centripetal acceleration at the outer wall
A block is hung by a string from the inside roof of a car. Then the string makes an angle with the vertical. Find what the angle
A helium-filled weather balloon has a 0.90 m radius at liftoff where air pressure is 1.0 atm, What is the pressure at the airborne location
a 600 ton Boeing business jet is flying at 500 mph at a constant altitude of 35,00 ft. if the jet is holding passengers as cargo amounting to a weight of 37 tons, what is the lifting force acting on the jet provided by the air?
A speeding motorist traveling with velocity Vm is spotted by a police car.find The velocity of the police car when it catches up to the motorist
A current of 1.00mA passes through a copper wire for 60.0s. How many coulombs of charge pass any point in the wire during this time period
An unstable high-energy particle is created in the laboratory, and it moves at a speed of 0.962c. Calculate what is the dilated lifetime
a 3.5 cm diameter circular coil with 29 turns of wire has resistance 1.6 omega. this coil is placed inside a solenoid
while unloading furniture, a worker slides a heavy box down the ramp on the rope. find the mass of the box
A copper-bottomed kettle, its bottom 24 cm in diameter and 3.0 mm thick, sits on a burner. The kettle holds boiling water, and energy flows into the water from the kettle bottom at 800 W.
At a point P, the electric field is 71 N/C at 22 degrees clockwise from the positive x axis. A particle of mass 1.5 kg and charge 0.17 C is located at P.
An 7.60-cm-diameter, 310 sphere is released from rest at the top of a 1.70-m-long, 20.0 incline. It rolls, without slipping, to the bottom. What fraction of its kinetic energy is rotational
Natural gold has only one isotope: If gold is bombarded with slow neutrons, particles are emitted. (a) Write the appropriate reaction equation. (b) Calculate the maximum energy of the emitted beta particles.
An electron of mass 9.1 * 10^-31 kg is moving in the xy-plane; its speed is 2.0 * 10^5 m/s, What are the components of the momentum of the electron
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