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As you bounce a tennis ball of mass 5.30 10-2 kg off a wall, its velocity changes from vx = 10.5 m/s to vx = -7.4 m/s. Find the impulse applied to the ball.
A jellyfish is floating in a water-filled aquarium 1.00m behind a flat pane glass of 6.00cm thick and having an index of refraction of 1.50. Where is the image of jellyfish located
A 20 kg block is stacked on top of the 20 kg block. Both blocks are glued together. What is the magnitude F of force, acting horizontally on the two blocks, that is required to make the two blocks start to move.
Suppose that a disk rotates through five revolutions in 4 seconds. What is the angular rotational velocity
What apparent free-fall acceleration is experienced by the managers remaining on the rim assume that the average mass for each inhabitant is 65kg.
Oxygen gas having a volume of 1.00 liter at 40.0 celsius and a pressure of 1.00 atmosphere expands until its volume its 1.50 liters, FInd the number of moles of oxygen
A 300kg piano is being lowered into position by a crane while two people steady it with ropes pulling to the sides. What is the tension in the vertical main cable supporting the piano
A certain lightbulb filament when hot has a resistance of 205 ?. The potential difference across the filament at a certain instant is standard household voltage, 120 V. What current is flowing through the bulb at that time
Compact fluorescent bulbs are much more efficient at producing light than are ordinary incandescent bulbs. They initially cost much more, but last far longer and use much less electricity.
Binoculars denoted as 7 x 50 have a total magnification of 7 times and objective lenses of 50- mm diameter. What is the focal length of the eyepiece
During a testing process, a worker in a factory mounts a bicycle wheel on a stationary stand and applies a tangential resistive force of 115 N to the tire's rim. what force must be applied to the chain
you're designing a prosthetic ankle that includes a miniature electric motor containing a 150-turn circular coil 15 mm in diameter. The motor needs to develop a maximum torque of 3.1 mN-m. what current do you need in your motors coil
q1. on a very muddy football field a 110kg linebacker tackles an 85kg halfback. immediately before the collision
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