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Q. A novice skier, starting from rest, slides down a frictionless 35 degree incline whose vertical height is 185m. How fast is she going when she reaches the bottom?
Q. How far out from an axis must a 1200 N force be applied (i.e. what is the forces moment arm) in order to counter and hold a 90 Nm torque acting in the clockwise direction?
A worker pushes horizontally on a large crate with a force of 304 N and the crate is moved 4.4 m. How much work was done.
A plane is flying southwest at 155 mi/h and encounters the wind from the west at 45mi/h? what is the planes new velocity with respect to the ground in standard position.
A certain particle has the life time of 10^-7 s, while measured at rest. How far does it go before decaying if its speed is 0.99 c when it is created.
He would like a prescription for contact lenses to serve the similar purpose. What is the correct contact lens prescription, in diopters.
A disc of mass M and radius R is rolling purely without slipping with velocity V on a flat horizontal floor. When it hits a step in the floor of height R/2.what is the velocity of the center of mass of the disc just after impact.
Suppose you see two main-sequence stars of the same spectral type. Star 1 is dimmer in apparent brightness than Star 2 by a factor of 100. What can you conclude? (Overlook any effects that might be caused by interstellar dust and gas.)
A charge of -5.5 micro Coulombs is placed at the origin of a coordinate system. Another charge of -5.5 micro Coulombs is placed at x = +0.22 m, y = +0.15 m.
If the Hawaiian hot spot is a fixed hot spot, which of directions is closest to the direction that the Pacific Plate was apparently moving as the Emperor Seamount Chain formed.
A 1.20 liter flask contains a certain quantity of ideal gas at 305 K. after that an equal number of molecules of the same gas are added to the flask, after which the absolute pressure is 1.30 times its unique value. What is the final temperature.
imagine that each person is about the same distance from the center of the field and can generate the same level of sound intensity. How many people are at game.
A freezer is comprised of 1.80x1x0.5 m^3 volume, insulated with 5 cm thick Styrofoam. (1) At what rate should the compressor remove heat to maintain the inside at - 20 degrees Celsius with the outside at room temperature. (2) What is the R-value o..
At one point in a pipeline, the water's speed is 3 m/s and the gauge pressure is 4.00×10^4 Pa. Find the gauge pressure at a second point in the line 11 m lower than the first if the pipe diameter at the second point is twice that at the first.
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