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A man is applying a horizontal force in trying to push a 25 kilogram block up a frictionless plane inclined at an angle of 15o.
A.) Find the force needed just to keep the block in equilibrium.
B.) Assume that she applies three times that force. Find what will be the acceleration of the block?
A disk rotates about its central axis starting from rest and accelerates with constant angular acceleration. At one time it is rotating at 4.1 rad/s; 45 radians later, its angular speed is 16 rad/s. Calculate (a) the angular acceleration (rad/s2), (b..
The figure shows a photo of a swing ride at an amusement park. The structure consists of a horizontal, rotating, What is the speed of each seat
Two particles each weigh 1.03 N. Find the magnitude of their mutual gravitational force when they are separated by a distance of 21.1 cm
A trunk with a weight of 230 N rests on the floor. The coefficient of static friction between the trunk and the floor is 0.32, what would be the acceleration of the trunk
what gauge pressure must a pump produce to pump water from the bottom of the grand canyon elevation 730 to indian
Is it correct to say the difference in the patterns produced by monochromatic and white light is caused by the fact that monochromatic light waves interfere with each other when they pass through a diffraction grating, while the rays of white light d..
An athlete executing a long jump leaves the ground at a 20 degree angle and travels 7.80 meter. If this speed were increased by just 6.0 percent, determine how much longer would the jump be
A coin with a diameter of 1.66 cm is dropped onto a horizontal surface. The coin starts out with an initial angular speed of 7.34 rad/s, How far does the coin roll before coming to rest
point a is located 0.75 m away from a charge of -3.90 x 10-9 c. point b is located 0.35 m away from the charge. what is
Consider a group of 20 molecules with the following speeds: three have speed 1 m/s, Determine the rms speed (in m/s) of the molecules in this group at this instant in time
The period of the earth around the sun is 1 year and its distance is 150 million km from the sun. An asteroid in a circular orbit around the sun is at a distance 461 million km from the sun. What is the period of the asteroid’s orbit?
A proton accelerates from rest in a uniform electric field of 600 N/C. At one later moment, its speed is 1.50 Mm/s, Find the acceleration of the proton
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