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A 5.00kg crate is sliding up an incline that is 30.0 degrees above the horizontal at 13.0m/s the coefficient of kinetic friction is 0.25.
What is the acceleration of the crate?
What is the work done by gravity?
What is the work done by friction?
What is the kinetic energy at the bottom?
The rain soaked shoes of a person may explode if ground current from nearby lightning vaporizes the water. find what average current is required to vaporize the water
A car moving at stable speed travels halfway around a circular track that has a diameter of 1.0 kilometer. Determine the car tangential speed
It is desired that 7.5C of charge be stored on each plate of a 4.5 -F capacitor. What potential difference is needed between the plates?
a 10.8nc charge is located at position xy1.0cm2.0 cma at what xy position is the electric field -225000i nc?b at what
A dolphin located in sea water at a temperature of 25°C emits a sound directed toward the bottom of the ocean 105 m below
The maximum speed of a 3.2-kg mass attached to a springis 0.65 m/s, and the maximum force exerted on the mass is11 N. What is the amplitude of motion for this mass
a truck horn emits a sound with a frequency of 245 hz. the truck is moving on a straight road with a constant speed.
a silver dollar of mass 200gm, and diameter 8cm, has a small hole punched through it at 2 cm from the center. the coin is initially at rest in a vertical plain with the hole directly under the center, what is the angular velocity of the coin at its..
The system consists of four thin concentric spherical shells with radii R, 2R, 3R, and 4R, respectively. The surface charge densities on these shells are 4σ, -3σ, 2σ, and - σ, respectively. Determine the electric field in all regions
A rock band playing an outdoor concert produces sound at 120dB 5.0m away from their single working loudspeaker. What is the intensity (I) 5 m from the loudspeaker
A Young's double-slit interference experiment gives bright fringes separated by 2.5 cm on a screen when the experiment is performed in air. What is the new spacing between bright fringes
Two identical tiny spheres carrying the same charge are 1.0m apartcenter to center in vacuum and experience an electrical repulsionof 1N. what is their charge? and find the ratio of the electrostatic and gravitational forces between two electrons whe..
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