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Q. A 14 kg runaway grocery cart runs into a spring with spring constant 240 N/m and compresses it by 56 cm. what was the velocity of the cart before it hit the spring?
Q. Suppose one gallon of gasoline produces 1.1 x10^8 J of energy, and this energy is sufficient to operate a car for 18 miles. An aspirin tablet has a mass of 275 mg. If the aspirin could be converted completely into thermal energy, how many miles would the car go on a single tablet?
If the light from the spotlight strikes the mirror at an angle to the normal, what angle to the normal would you expect for the reflected rays.
A 2.65 block is pushed 1.69m up a vertical wall with a constant speed by a constant force of magnitude F applied at angle 55.4 degrees with the horizontal. g= 9.8 m/s2. If the coefficient of kinetic friction between the block & wall is 0.54, Calcu..
Find tension in the back muscle and the compressional force
W hat is the downward acceleration of the blue spool
A bumper car with mass m1 = 116 kg is moving to the right with a velocity of v1 = 5 m/s. A second bumper car with mass m2 = 96 kg is moving to the left with a velocity of v2 = -3.8 m/s. The two cars have an elastic collision. Suppose the surface is f..
An ideal gas is expanded isothermally from 20L to 30L. During thismethod , 6J of energy is expended by the external mechanism that expanded the gas. Which of the statements is correct.
Create a graph corresponding to the stone vertical velocity
A 23 kg boom of length 6 m is supported by a cable that has a breaking tension of 1200N. The cable is perpendicular to the boom and is attached 4.5m from the pivot. What is the utmost load that can be suspended from the end of the boom.
An Oscilloscope grid is calibrated so that one square represents 1-V vertically and 1 msec horizontally. If the height of a square wave pulse display is 6 squares, the width of the pulse is 7 squares, and the cycle of the wave is 16 squares, the a..
A machinist starts with three identical square plates but cuts one corner from one of them, two corners from the second, and three corners from the third. Rank the 3 plates according to the x coordinate of their center of mass, from smallest to large..
A disk of radius R = 9 cm is pulled along a friction less surface with a force of F = 15 N by a string wrapped around the edge. At the instant when d = 28 cm of string has unwound off the disk, what is torque exerted about the center of the disk.
A uniform plank of length 2m and mass 29kg is supported by three ropes, as indicated by the blue vectors. Find the tension in each rope when a 690N person is 0.500m from the left end.
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