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A block of mass m begins at rest at the top of a ramp at elevation h with whatever PE is associated with that height. The block slides down the ramp over a distance d until it reaches the bottom of the ramp.
How much of its original total energy (in J) survives as KE when it reaches the ground?
(In other words, the acceleration is not zero like it was in lab and friction does not remove 100% of the original PE. How much of that original energy is left over after the friction does work to remove some?)
m = 8.3 kgh=2.2m d =5mμ = 0.3θ=36.87o
A hockey player (76 kg) and a puck (0.2 kg) start out at rest on an ice rink. determine how fast the player will recoil after the slap shot
The rail has no electric resistance and does not move. A slide wire with mass m and resistance R can slide up and down without friction while maintaining electrical contact with the rail. The slide wire is released from rest. Show that the slide w..
What would you expect of a pendulum at a high altitude, for example on a high mountain top? What would your pendulum do under weightless conditions
The rms electric field of an electromagnetic wave increases from 320 to 960 N/C. (a) Determine the wave intensities for the two values of the electric field. (b) What is the rms magnetic field associated with each electric field? (c) Determine the wa..
An oversimpliefied model of the hydrogen atom has the electron orbiting the nucleus's proton at a distance of approximately 5.29x10^-11 m. how much force is needed to keep the electron in a circular orbit
In a Compton scattering experiment, an x-ray photon scatters through an angle of 21.0° from a free electron that is initially at rest. The electron recoils with a speed of 2,520 km/s. Calculate the wavelength of the incident photon.
The drawing shows four insulated wires overlapping one another, forming a square with 0.050-m sides. All four wires are much longer than the sides of the square. The net magnetic field at the centerof the square is 72 μT directed into the drawing...
A 19.3-g mass of gold in the form of a cube is 1 cm long on each side ( somewhat smaller than a sugar cube). What would be the length of the side of a cube having twice this mass of gold?
A daredevil on a motorcycle leaves the end of a ramp with a speed of 30.5 m/s, what is the maximum height that he reaches
Light enters a container of liquid at an angle of 48° to the normal; the refracted beam makes an angle of 37° with the normal. Calculate the index of refraction of this liquid
The starship Enterprise speeds by you at a speed of 0.960c. It is measure in your frame to be 100 m long. What will be it's length at rest
2.0A current in 560 turns primary coil of a transformer causes 14 A to flow in the secondary coil. How many turns are in the secondary coil
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