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Before opening his parachute, a sky diver with a mass of 90.0 kg experiences an upward force from air resistance of 150 N.
(a) What net force is acting on the sky diver?
(b) What is the sky diver's acceleration?
The total mass of helium in a balloon is 131 kg. What is the volume of the balloon
A woman holds a tube of lipstick 7.5 cm from a spherical mirror and notices that the image of the tube is inverted, Calculate the focal length of the mirror
A reasonable estimate of the moment of inertia of an ice skater spinning with her arms at her sides can be made by modeling most of her body as a uniform cylinder. Estimate the skater's moment of inertia to two significant figures
On a very muddy football field, a 100kg linebacker tackles an 85kg halfback. What is the direction of this velocity
An artillery shell of mass 10.00 kg, lying at rest on the ground, accidentally detonates, exploding into three pieces of shrapnel. find the angle at which the remaining piece of shrapnel travels
question1it has been asserted that a permanent magnet is really just made up of an insulator with fixed positive
A 6.50?Fcapacitor that is initially uncharged is connected in series with a 4500resistor and a 505 V emf source with negligible internal resistance. A long time after the circuit is completed (after many time constants), what are the values of the ..
question1a 0.145-kg baseball pitched horizontally at 39 ms strikes bat and is popped straight up to a height of 32 m.
In a friendly game of handball, you hit the ball essentially at ground level, How high is the ball when it hits the wall
The moon orbits the earth at a distance of 3.85 x 108 m. Assume that this distance is between the centers of the earth, Find the period for the moon's motion around the earth
In a typical game of squash, two people hit a soft rubber ball at a wall until they are about to drop due to dehydration and exhaustion.
Two sinusoidal waves, identical except for phase, travel in the same direction along a string, producing the net wave y(x,t)=(6.0 mm)sin(24.0x -2.0 s-1 * t+0.320 rad), with x in meters and t in seconds. What is the wavelength ? of the two waves? W..
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