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An extreme skier, starting from rest, coasts down a mountain slopethat makes an angle 25.0° with the horizontal. The coefficientof kinetic friction between her skis and the snow is 0.200. Shecoasts for a distance of 11.0 m beforecoming to the edge of a cliff. Without slowing down, she skis offthe cliff and lands downhill at a point whose vertical distance is3.10 m below the edge.
How fast is she going just before she lands?
An ideal gas undergoes isothermal compression from an initial volume of 5.37 m3 to a final volume of 2.27 m3. There is 6.45 mol of the gas, How much work is done by the gas
A strong man is compressing a lightweight spring between two weights. One weight has a mass of 2.3 kg, the other a mass of 5.3 kg . He is holding the weights stationary, What is the speed of the heavier weight
After crossing the finish line, the marathon runner stops, and then performs a celebratory vertical jump. what was the avg. force of the vertical ground reaction force
In lectures and in tutorials, we discussed the confinement of an electron (or other particle) to a box of infinite depth, running from x = 0 to x = a. If we, instead, define this 1-D region of confinement as running from -(a/2) to (a/2)
A sailboat is heading directly north at a speed of 21 knots (1 knot = 0.514 m/s). The wind is blowing towards the east with a speed of 10.6 knots. (Both velocities are given relative to the Earth.)
a boat is traveling upstream in the positive direction of thexaxis at14kmh with respect to the water of a river. the
An electric dipole includes a charge of 4 ?C and a second charge. What is the total charge of the dipole?
A 28.0 kg seal at an amusement park slides down a ramp intothe pool below. What is the work doen by kinetic friction
A particle (q=7.5*10^-6 C) is released from rest at a point on the x-axis, x = 10 cm. It begins to move due to the presence of a 2.0*10^-6 C charge which remains fixed at the origin. What is the kinetic energy of the particle at the instant it passe..
I hold a flat mirror 24.6 cm in front of my face. There is a freckle on my face 1 mm in diameter. Find the angular size of the freckle on the image of my face as viewed by my eye
The tip of a scanning electron microscope has a radius ofcurvature of 5 nm, and is at a potential of 3V. estimate the electric field at its surface
Two sound sources produce sound waves. The first source has an intensity level of 38.0 W/m^2 and the second source has an intensity level that is 2.5dB greater than the intensity level of the first source. What is the intensity level of the second so..
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