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Q1. A dog pulls on the pillow with a force of 8.6 N at an angle of 22° above the horizontal. What is the forward or x component of this force?
Q2. For the Atwood's machine, suppose the masses have an initial speed of v = 0.22 m/s and that m2 is moving upward. How high does m2 rise above its initial position before momentarily coming to rest, given that m1 = 3.5 kg and m2 = 3.1 kg?
Vectors A and B have scalar product -3.00 and their vector product has magnitude 5.00. What is the angle between these two vectors
Assume that the cell is floating on the surface of water, and that the water surface has a coefficient of friction of u=0.300. You now want to use a laser to move cell horizontally, along the surface of the water.
Two tiny conducting spheres are identical and carry charges of -29.4C and +70.0C. What is the magnitude of the force that each sphere experiences
The infamous chicken is dashing toward home plate with a speed of 5.80 while he decides to hit the dirt. The chicken slides for 1.1, just reaching the plate as he stops (safe, of course).
A flywheel having constant angular acceleration requires 4.6-{rm s} to rotate through 162 rad. Its angular velocity at the end of this time is 100 rad/s. Find out the angular velocity at the beginning of the 4.6s interval; the angular acceleration..
A diving board oscillates with simple harmonic motion of frequency 3.23 cycles per second. What is the maximum amplitude with which the end of the board could vibrate in order that a pebble placed there not lose contact with the board during the o..
An ideal refrigerator maintains a temperature of 8c inside it, whereas in the kitchen the temperature is 25c. find te energy ejected into the kitchen
The police officer, knowing that the coefficient of kinetic friction between tires and road is 0.80, compute the speed of the sports car at impact.
A gymnast with mass m1 = 47 kg is on a balance beam that sits on (but is not attached to) two supports. The beam has a mass m2 = 118 kg and length L = 5 m. Each support is 1/3 of the way from each end. Initially the gymnast stands at the left end ..
A student's car stalls right in front of a speed bump while she is on her way to physics class, If is 12.7°, what is the size of the force pulling the car in lbs
A converging lens, which has a focal length equal to 8.2 cm, is separated by 32.5 cm from a second lens. Find the position of the final image using both a ray diagram and the thin-lens equation
It rolls at a steady speed for 1.9 s, then one wheel begins to stick. The train comes to a stop 6.0 m from its starting point. Illustrate what is the train's acceleration after its wheel begins to stick?
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