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A bunch of grapes is placed in a spring scale at a supermarket. The grapes oscillate up and down with a period of 0.32s , and the spring in the scale has a force constant of 600N/m .
1. What is the mass of the grapes?
2. What is the weight of the grapes?
The volume control on a surround-sound amplifier is adjusted so the sound intensity level at the listening position increases from 21 to 59 dB. What is the ratio of the final sound intensity to the original sound intensity?
An object placed on an equal-arm balance scale requires 12 kg to balance it. When object is placed on a spring scale, the spring scale reads 12 kg.
A small 0.300-kg object moves on a frictionless horizontal table in a circular path of radius 2.40 m. what is the radius of the smallest possible circle on which the object can move
In a television set the power needed to operate the picture tube comes from the secondary of a transformer. Find the current in the primary
On a clear day the electric ?eld in the atmosphere near the earth's surface is 100 N/C, What is the potential at the top of a man's head if the man is 2 m tall and is standing
A lens that is "optically perfect" is still limited by diffraction effects. Suppose a lens has a diameter of 130mm, What is the linear width (diameter) of the central maximum at the focal distance of the lens
Suppose you are driving in the High Sierras from Mammoth Mountain to the Owens Valley 2038 m below. what would be your approximate final speed
A 30 cm spring is compressed to 2 cm. a force of 200 N was used to do this. How much potential energy is stored in the spring
a block of mass 12.0 kg is connected to a spring on a horizontal frictionless surface. write the expression for the position of the block as the function of time
An ocean liner leaves New York City and travels 19.2 ° north of east for 186km. How far east and how far north has it gone? In other words, what are magnitudes of the components of the ship's displacement vector in the directions (1) due east and ..
If the create has a mass of 110 and is 1.60 tall and 0.80 in depth and width, what is the minimum force needed to make the crate start tipping? (Assume the center of mass of the crate is at its center and static friction great enough to prevent sl..
suppose that a projectile which is subject to a linear resistive force is thrown down with a speed of Vyo which is greater than the terminal speed Vterm. Describe and explain how the velocity varies with time, and make a plot of Vy against t for t..
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