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A 150 L (40 gal) electric hot-water tank has a 5.0 kW heater. Determine how many minutes will it take to raise the water temperature from 64 F to 134 F?
A 5.0-, 0.732- wire is used to support two uniform 235- posts of equal length, What is the frequency of the sound this wire produces
A 62-kg skier speeds down a trail. The surface is smooth and inclined at an angle of 22 with the horizontal. Determine the normal force acting on the skier
An aluminum cup contains 225 g of water and a 40-g copper stirrer, all at 27°C. A 440-g sample of silver at an initial temperature of 85°C is placed in the water. Calculate the mass of the aluminum cup
A block weighing 15.0 N rests on the floor. What force does the floor exert on the block
"A 575g air-track glider attached to a spring with spring constant 14.0 N/m is sitting at rest on a frictionless air track. What is the amplitude of the subsequent oscillations
A car moves along an x axis through a distance of 950 m,starting at rest (at x = 0) and ending at rest (atx = 950 m). Through the first 1/4 of that distance, itsacceleration is +6.25 m/s2.
A 40 g block of ice is cooled to -75°C and is then added to 590 g of water in an 80 g copper calorimeter at a temperature of 23°C. Decide the final temperature of the system consisting of the water, ice, and calorimeter. Remember that the ice should ..
a ball is launched at the speed vo at the angle 60 degrees by a basketball player at the height of 2m from the ground.
during high jump practice an athlete reached a maximum height of 3.03 m where the time to reach the apex was 0.58 s.
what is the weight of sea water displaced by a boat weighing 120kN? d=1300 Kg/m^3 what is the volume of the sea water displaced by the boat
A wheel radius rotates at a uniform speed. If a point on the rim of the wheel has a centripetal acceleration of 1.2 m/s^2, determine what is the point tangential speed
The diffusion rate for a solute is 4.0 × 10-11 kg/s in a solvent-filled channel that has a cross-sectional area of 0.50 cm2, What would be the diffusion rate m/t in a channel with a cross-sectional area of 0.30 cm2
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