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A student pulls (parallel to the incline) on a rope attached to a box of books and moves the box up an incline at 12 degrees with the horizontal. If the box starts at rest at the bottom of the ramp and is pulled with a 185 N force and Mk = 0.27 what is the acceleration of the box up the ramp? Can I find the answer without knowing the mass of the box?
Discuss briefly centripetal acceleration, the speed and the force exerted by a ball attached to a string.
A modern sculpture has a large horizontal spring, with a spring constant of 274 N/m, By how much has the spring stretched
A softball of mass 0.220 kg that is moving with a speed of 5.5 m/s (in the positive direction) collides head-on and elastically with another ball initially at rest. calcultae the velocity of the target ball after the collision
On a warm day (89F), an air-filled balloon occupies a volume of 0.250m^3 and has a pressure of 22.0 lb/in . If the balloon is cooled to 32F in a refrigerator while its pressure is reduced to 14.7 lb/in , what is the volume of the air in the container..
A 56.0 g sample of a conducting material is all that is available. The resistivity of the material is measured to be 1.22×10-7 ?m, What will be the diameter of the wire
The coyote starts 42.0 m from the brink of a cliff. The roadrunner zips past him at a speed of 18.0 m/s. What is the acceleration of the coyote
Assume all temperatures to be exact. Ice (initially at 0 ) is added to 0.50L of tea at 18C to make the coldest possible iced tea. If enough ice is added so the final mixture is all liquid, how much liquid is in the pitcher when this condition occurs?
Record the resistance and current values calculated in questions 5, and load the numbers into a spreadsheet. Make a plot of the current I as a function of the total resistance R. (Remember that the R values will go on the x-axis and the I values o..
If a cat repeatedly rubs against your cotton slacks on a dry day, the charge transfer between the cat hair and the cotton can leave you with an excess charge of -2.00 ?C. How many electrons are transferred between you and the cat
Tension is maintained in a string by attaching one end to a wall and by hanging a 2.06 kg object from the other end of the string after it passes over a pulley that is 2.12 m from the wall. What is the fundamental frequency of the string
A 0.80 kg mass is attached to a light spring with a force constant of 23.9 N/m and set into oscillation on a horizontal frictionless surface. determine maximum speed of the oscillating mass
Far in space, where gravity is negligible, a 480-kg rocket travelling at 95 m/s fires its engines. The figure shows the thrust force as a function of time. The mass lost by the rocket all through these 30s is negligible.
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