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The position of a 50 g oscillating mass is given by x(t) = (2.0 cm) cos(5t), where t is in seconds. Determine the following. (a) The amplitude. (b) The period. (c) The spring constant. (d) The maximum speed. (e) The total energy. (f) The velocity at t = 0.40 s. cm/s
A cart is driven by a large propeller or fan, which can accelerateor decelerate the cart. The cart starts out at the positionx = 0 m, with an initial velocity of +5.5 m/s and aconstant acceleration due to the fan. The direction to the right ispositiv..
1. an 80 kg man climbs a 50 m-high hill in 20 minutes. what is the average power in watts he expends climbing the hill?
To monitor the breathing of a hospital patient, a thin belt is girded around the patient's chest. find the average induced emf in the coil during this time interval
Consider a 7 solar mass main sequence star, Estimate its luminosity in solar luminosities and how long (in years) it could maintain its luminosity through gravitational collapse
Calculate the resultant velocity of an airplane that normallyflies at 200km/h if it encounters a 50-km/h tailwind. If itencounters a 50-km/h head wind
A 0.34 kg iron horseshoe that is initially at 616 ?C is dropped into a bucket containing 25 kg of water at 28 ?C. What is the final equilibrium temperature? Avoid any energy transfer to or from the surroundings and assume the specific heat of iron is..
A spaceship is 1600 m long when it is at rest. When it is traveling at a certain constant speed its length is measured by external observers, What is the speed of the spaceship in terms of the speed of light
Estimate the maximum centrifugal and coriolis forces that you would experience on a ferris wheel in Melbourne, FL. How does this compare with gravity? (Please use the earth's surface as the reference frame).
A man stands on the roof of a building of height 13.6m and throws a rock with a velocity of magnitude 31.8m/s at an angle of 31.6 degrees above the horizontal. compute the maximum height above the roof reached by the rock
A real 90 v battery (one with internal resistance) has a terminal voltage of 80 v when a motor with a resistance of 8 omega is connected to it. how large is the batterys internal resistance
A rifle is aimed horizontally at a target 50 m away. The bullet hits the target 2.0 cm below the aim point. What was the bullet's speed as it left the barrel
A ball is tossed from an upper-story window ofa building. The ball is given an initial velocity of 8.10m/s at an angle of 19 degrees below the horizontal. It strikes the ground 6.00 s later.
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