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A 12.6 g CD with a radius of 6.16 cm rotates with an angular speed of 31.3 rad/s. What is its kinetic energy?
What angular speed must the CD have if its kinetic energy is to be doubled?
At point A, 3,00 m from a small source of sound that is emitting uniformly in all directions, the sound level is 53.0 dB. what is the intensity of the sound at point A
A flight attendant pulls her 72.0 N flight bag a distance of 282 m along a level airport floor at a constant speed. The force she exerts is 33.0 N at an angle of 52.0° above the horizontal.
An automobile starter motor has an equivalent resistance of 0.0660 ? and is supplied by a 12.0-V battery with a 0.0170-? internal resistance. What is the current to the motor
a total of 25 rm kg of bananas on their way to the market. Assume that the springs have somehow not yet compressed to their maximum amount. Explain how much are the springs compressed?
The disk and the platform go from rest to an angular velocity of 8.5 rad/s in 2.5 seconds. What is the moment of inertia of the disk
Entrance and exit ramps for freeways are often circular stretches of road. As you go around one at a constant speed, What will be the acceleration if you double your speed
How fast was the car traveling as it went over the cliff.
A 300 gram chunk of clay is thrown at a door with a velocity of 10 m/s. The clay sticks to the door. Determine whether the interaction is elastic
Find out the magnetic force on the rod
Suppose you want to design a microscope so that for a fixed distance between the two lenses, If you want the distance between the eyepiece and objective to be 35 cm, what should the focal length of the objective be
An insect 3.75 mm tall is placed 20.0 cm to the left of a thin planoconvex lens. Calculate the location of the image this lens forms of the insect
On a frictionless, horizontal air track, the glider oscillates at the end of an ideal spring of force constant 2.52N/cm. The graph in the acceleration of the glider as a function of time. Find the mass of the glider.
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