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A young girl gives her toboggan a push of 4.0 m/s up a hill. It slides up the hill slowing down at an acceleration of 8.0 m/s2 [down]. It comes to a stop and then slides back towards her speeding up at the same rate as it slowed down on the way up. If the girl has to run 48m down the hill from where it first was pushed to get to where her sled stopped, find the elapsed time for the journey.
The spring constant is to be 200 lb/in., and the stress at the design load is to be 80 ksi. The clash allowance is to be 0.10 in. The dimensions of related parts establishes that D should be 3 in. Determine N, d, and Lf . List the common spri..
A system consists of two positive point charges, q1 and q2>q1. The total charge of the system is +62.0 x 10^-6 C, Find q1 and q2
How many kilocalories of heat are produced when the brakes are used to bring a 930 kg car to rest from a speed of 102 km/h.
While driving on the freeway at 110 km/h, you pass a truck whose total length you estimate at 25 m. A. If it takes you, in the driver's seat, 6.0s to pass from the rear of the truck to its front, what is the truck's speed relative to the road? ..
Jet aircraft mechanics wearing ear protectors are able to converse with each other because the ear protectors block out the sound of the jet engine. What physics concept would account for this?
A compact disc (CD) stores music in a coded pattern of tiny pits 10-7 meter deep. The pits are arranged in a track that spirals outward toward the rim of the disc; Find the angular speed of the compact disc
a particle has a velocity u 0.84c in the labortory. the laboratory is itself moving with velocity v 0.77c relative to
A hotel elevator ascends 110 {rm m} with a maximum speed of 4 {rm m/s}. Its acceleration and deceleration both have a magnitude of 1.20 {rm m/s^2}.
The star Cancri is 57 light-years from the earth and has a mass 0.85 times that of our sun. find the orbital period of the planet of Cancri
There are no results for some microbiologists recommend incubating this medium at 37 along with an uninoculated control and then transferring all tubes to the refrigerator prior to reading them, why might this be the preferred technique in some situa..
a 46.0-g super ball traveling at 30.0 ms bounces off a brick wall and rebounds at 21.0 ms. a high-speed camera records
A block of mass m is initially at rest at the top of an inclined plane with a height = 6 m which makes and angle of ? = 25 degrees with respect to the horizontal. What is the speed of the block as it leaves the ramp
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