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A box slides down a 40° ramp with an acceleration of 1.260 m/s2. Find out the coefficient of kinetic friction between box and ramp.
A professor's office door is 0.9 wide, 2.0 high, and 4 thick; has a mass of 25; and pivots on frictionless hinges. A "door closer" is attached to door and top of the door frame.
What is the magnitude of the electric field 19.7 cm directly above an isolated 3.25×10^?5 C charge? What is the direction of the electric field? Downward or upward?
A whale comes to the surface to breathe and then dives at an angle of 20 degree below the horizontal.
The A string of a violin is 32cm long between fixed points with a fundamental frequency of 440Hz and a mass per unit length of 6.5×10-4 kg/m. What is the wave speed in string.
Each cable has a length of l = 2.70 -{rm m}. What is the tension T in each of the cables? Use 9.80- {rm m/s}^2 for the magnitude of the acceleration as a result of gravity.
A 67.3 ice skater moving to the right with the velocity of 2.52 throws a .151 snowball to the right with a velocity of 33.7 relative to the ground. What is velocity of the ice skater after throwing the snowball.
a support cable runs from the top of the boom to the tractor. The angle between the support cable and the horizontal is 32°, and the angle between the boom and the horizontal is 48°.
How long will it take you to cover the 99 m length of the walkway if, once you get on the walkway, you immediately turn around and start walking in the opposite direction with a speed of 1.5 m/s relative to the walkway.
Find the mass flow rate in through the vent in question #1 using the following well-known relationship for the mass flow into an opening:
A Cassegrain astronomical telescope uses two mirrors to form the image. Compute the radius of curvature of a secondary mirror
A hydraulic lift consists of two pistons that connect to each other by an incompressible fluid. If one piston has an area of 0.49 m^2 and the other an area of 6.2m^2, how big a mass can be raised by a force of 220N exerted on the smaller piston.
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