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An object moves according to x = 3 m e^(-2/s t), y = 4 m sin(3/s t), z = -5 m cos(3/st) . a. Find its velocity. b. Find its acceleration.
Note: s is seconds ex:-2/s means -2 per second and m is meters
A 3.00 kg bucket of water is raised from a well by a rope. If the upward acceleration of the bucket is 2.20 m/s2, find out the force exerted by the rope on bucket of water.
The pulmonary artery, which connects the heart to the lungs, has an inner radius of 2.9 mm and is 8.6 cm long. find the average speed of blood in the pulmonary artery
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Two polarizers are oriented at 30.0 degrees to one another. Light polarized at a 15.0 degree angle to each polarizer passes through both
q1.a 1800-kg jeep travels along a straight 500-m portion of highway from a to b at a constant speed of 10 ms. at b the
A guitar string is 93 cm long and has a mass of 3.6 g. The distance from the bridge to the support post is L = 60 cm, What is the frequency of the second overtone
A hospital needs 1 millicurie of a radioactive pharmaceutical with a half-life of 12 hours. If delivery time takes 3 days, what activity must be shipped to the hospital by the supplier
A block is at rest on a plank whose angle can be varied. The angle is gradually increased from 0 deg. At 27.1°, Calculate the kinetic coefficent of friction between the block and the plank
The spring constant for the tendon is the same for both groups, 33 N/mm. Illustrate what is the difference in maximum stored energy between the sprinters and the nonathletes?
An ideal heat engine absorbs 81.2 kJ of heat and exhausts 66.1 kJ of heat in each cycle, How much work is done in a cycle
A 73 kg parachutist descends during a vertical height of 420 m with constant speed. Find the increase in entropy produced by the parachutist; assume the air temperature is 21°C.
An initially stationary 1.3 kg object accelerates horizontally and uniformly to a speed of 17 m/s in 3.0 s. What is the instantaneous power due to that force
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