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Question: The motion of a particle is given by x(t)=(25cm)cos(11t), where t is in s. At what time is the kinetic energy equal to twice the potential energy for the first time? Express your answer to two significant figures and include the appropriate units. The response must be typed, single spaced, must be in times new roman font (size 12) and must follow the APA format.
Consider a Hydrogen atom with the electron in the n = 8 shell. What is the energy of this system, How many electrons would fit in this main shell
A 60-V generator supplies 4.5 kW of power. How much current does the generator produce
Brad tries out a weight-loss plan that involves repeatedly lifting a 45.0-kg barbell from the floor over his head to a height of 2.3 m. If he is able to complete three such lifts per minute, how long will it take for him to lose 0.50 kg of fat? "Burn..
An archer pulls the bowstring back for a distance of 0.470 m before releasing the arrow. What is the elastic potential energy of the drawn bow
An advertisement shows a 1239 kg car slowly pulling at constant speed a large passenger airplane to demonstrate the power of its newly-designed 79.7-hp (horsepower) engine, How much work is performed by the car on the airplane during this time
you have one heavy cart at 1.5kg and the lighter one at 1.0kg. neglect friction. the heavy cart starts at rest. what are the magnitude and direction of the systems momentum
question1a professors office door is 0.92 wide 2.0high and 4.0 thick has a mass of 25 and pivots on frictionless
A diffraction grating with 875 slits with 2.38×106 m spacing is illuminated with monochromatic light (light of a single wavelength). What is the wavelength of the light
A uniformly charged disk of radius 35.0 cm carries a charge density of 8.20*10 -3 C/m 2 . Compute the electric field on the axis of the disk at the following distances from the center of the disk. Distances are 5.00 cm, 10.00 cm, 50.00 cm, and 2..
An 91kg man drops from rest on adiving board 3.0m above the surface of the water and comes to rest0.55s after reaching the water. What is the net force on the diveras he is brought to rest
A 210g , 30.0-cm-diameter turntable rotates on frictionless bearings at 61.0rpm. What is the turntable's rotation angular velocity when the block reaches the outer edge
A woman on a bridge 86.8 m above a stream sees a bottle floating along at a constant speed. Calculate the speed of the bottle
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