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A 12-kg block is held against a spring of force constant 1.0 x104 N/m, compressing it a distance of 0.15 m. How fastis the block moving after it is released and the spring pushesit away?
Clarisse invests $61500 in money-market accounts at three different banks. Bank A pays 2% interest per year, bank B pays 2.5%, How much did she invest in each bank
You push on the chair with a force of = 42.0 directed at an angle of 34.0 below the horizontal and the chair slides along the floorcalculate, Illustrate what is the magnitude of the normal force that the floor exerts on the chair.
The image behind a convex mirror (radius of curvature = 66.0 cm) is located 25.0 cm from the mirror. what is the magnification of the mirror
An ice chest at a beach party contains 12 cans of soda at 3.93 °C. Each can of soda has a mass of 0.35 kg, determine the final temperature T of the soda and watermelon in degrees Celsius
an object is placed 19.2 cm from a first converging lens of focal length 12.2 cm. a second converging lens with focal
A bedroom bureau with a mass of 57 kg,including drawers and clothing, rests on the floor. If the coefficient of static friction between the bureau and the floor is 0.45, what is the minimumhorizontal force a person must apply to start the bureaumov..
Two bullets have masses of 2.9 gand 4.2 g, respectively. Each is fired with a speed of 42.0m/s. What is the kinetic energy ofthe first bullet?
The angle of incidence at a solid/liquid boundary is 78.1°,and the index of refraction of the solid is n = 1.62.(a) What must be the index of refraction of the liquid such that the direction of the light entering the liquid isnot changed?
During each cycle, a refrigerator ejects 680 kJ of energy to a high-temperature reservoir, and takes in 600 kJ of energy from a low-temperature reservoir. Determine the work done on the refrigerant in each cycle. Determine the coefficient of performa..
The membrane that surrounds a certain type of living cell has a surface area of 4.5 x 10-9 m2 and a thickness of 1.1 x 10-8 m, how many such ions are present on the outer surface
In a liquid with a density of 1500 kg/m^3 , longitudinal waves with a frequency of 420 hz are found to have a wavelength of 8.50m . Calculate the bulk modulus of the liquid. 2) A metal bar with a length of 1.60 m has a density of 6200 kg/m^3. Long..
A bat emits chirping sounds of frequency 75 kHz while hunting for moths to eat. The bat flies east at 8 m/s. What is the frequency of the reflected sound detected by the bat
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