A 4 -foot spring measures feet long after a mass weighing pounds is attached to it. The medium through which the mass moves offers a damping force numerically equal to times the instantaneous velocity. Find the equation of motion if the mass is initially released from the equilibrium position with a downward velocity of ft/s. Find the time at which the mass attains its extreme displacement from the equilibrium position. What is the position of the mass at this instant
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Physics, 22.06.2019 15:40
If an electric circuit is not grounded it is best to reach out and touch it to provide the ground a.true or b.false
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Ahole in the ground in the shape of an inverted cone is 14 meters deep and has radius at the top of 11 meters. the cone is filled to the top with sawdust. the density of the sawdust depends upon the depth, x, following the formula ρ ( x ) = 2.5 + 1.2 e − 0.7 x kg/m3. find the total mass of sawdust in the conical hole.
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Physics, 23.06.2019 16:00
When a charged balloon sticks to a wall, the downward gravitational force is balanced by an upward static friction force. the normal force is provided by the electrical attraction between the charged balloon and the equal but oppositely charged polarization induced in the wall's molecules. if the mass of a balloon is 1.2 g, its coefficient of static friction with the wall is 0.71, and the average distance between the opposite charges is 0.80 mm, what minimum amount of charge must be placed on the balloon in order for it to stick to the wall? express your answer to two significant figures and include appropriate units.
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A 4 -foot spring measures feet long after a mass weighing pounds is attached to it. The medium throu...
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