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A grinding wheel in the shape of a solid disk is 0.200m in diameter and has a mass of 2.50kg . The wheel is rotating at 2350 rpm about an axis through its center.
A) What is its kinetic energy?
B) How far would it have to drop in free fall to acquire the same amount of kinetic energy?
A parallel-plate air capacitor has a capacitance of 940 pF. The charge on each plate is 2.10 µC. How much work is required to double the separation
A 900- kg car collides with a 1200- kg car that was initially at rest at the origin of an x-y coordinate system. What was the initial speed of the lighter car
A person can jump a horizontal distance of 2.80m on Earth. How far could the person jump on the moon, where the free-fall acceleration is g/6 and g=9.81 m/s2?
A copper kettle contains water at 23.4 °C. When the water is heated to 99.5 °C, Determine the volume of the kettle
What is the separation between the two atoms in this molecule if we model them as point masses? The mass of hydrogen is 1.67* 10^-27 kg and nitrogen is 2.33*10^-26 kg
What is the rms current in a series RC circuit if = 3.2 kOhm, C = 0.8 microfarads (uF) , and the rms applied voltage is 130V at 79Hz? What is the power dissipated by the circuit
Under favourable circumstances the human eye can detect 1.0e-18 J of electromagnetic energy. How many 600-nm photons does this represent.
A bullet is fired through a board, 14 cm thick, with a line of motion perpendicular to the face of the board. If it enters with a speed of 450 m/s, what is the bullets acceleration
A blower releases a ball down the lane with a linear velocity at release of 12 meters per second. what was the angular acceleration of the arm to the release point
A 3m long ladder leans against a frictionless wall. The coefficent of static friction between teh ladder and the floor is .40. What is the minimum angle the ladder can make
Two cubes make from the same material. The radiant energy per second emitted by the small cube (1L ) is 0.675j/s. What is the energy emitted per second by the large cube (2L)
Carl and Lenny are trying to find Carl's keys that are beeping-he attached a device to beep when you whistle for this purpose, how far is Lenny from the key's
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