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A 2-kg block is released from rest and allowed to slide down a frictionless surface and into a spring. The far end of the spring is attached to a wall, as shown. The initial height of the block is 0.5 m above the lowest part of the slide and the spring constant is 450 N/m.What is the block's speed when it is at a height of 0.25 m above the base of the slide? (b) How far is the spring compressed? (c) The spring sends the block back to the left. How high does the block rise?
A tank having a volume of 0.100 m3 contains helium gas at 135 atm. How various balloons can the tank blow up if each filled balloon is a sphere 0.300 m in diameter at an absolute pressure of 1.50 atm.
A Carnot engine with a hot-reservoir temperature of 360 has the same thermal efficiency. What is the cold-reservoir temperature in C?
A 245 ball is tied to a string. It is pulled to an angle of 5.20 and released to swing as a pendulum. A student with a stopwatch finds that 10 oscillations take 10.5.
When the walkway exerts a load force of 9900 N on one of the support points, through what distance does the point move down?
Imagine two 5.0 g bags of protons, one at the earth's north pole and the other at the south pole. Calculate the electrical repulsion that each bag exerts on the other.
What are (a) x component and (b) y component of a vector in the xy plane if its direction is 329° counter clockwise from the positive direction of the x axis and its magnitude is 9.0 m.
Find out the speed of the satellite
A man takes his dog out for a walk. The dog has no legs and is dragged along sidewalk on a little sled (mass of dog + sled = 13.0kg). The sidewalk exerts a frictional force of 14.0N.
A 71kg pole-vaulter falls from rest from a height of 4.6m onto a foam-rubber pad. The pole-vaulter comes to rest 0.4s after landing on the pad.
If a car traveling at 66 km/h will skid 22 m when its brakes lock, how far would it skid if it is traveling at 120 km/h when its brakes lock.
what are the angles among the cable supporting the load and the beam and between the cable supporting the beam and the beam?
After that, specify which muscles are pulling on which bones and what type of joints is involved in lifting the glass. (Part two) at last, trace the path of the water from the mouth to the urethra, detailing gastrointestinal and renal / urinary an..
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