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The apparatus show in firgure P11.8 was used by Joule tomeasure the mechanical equivalent of heat. Work is done on thewater by a rotationg paddle wheel, which is driven by two blocksfalling at a constant speed. the temperature of the tired waterincreaseds due to friction between the water and the paddles. ifthe energy lost in the bearings and through the wall is neglected,then the loss in potential energy associated with the blocks equalsthe work done by the paddle wheel on the water. if each block has amass of 1.5kg and the insulated tank is filled with 200g of water, what is the increase in tempterature of the water after the blocksfall through a distance of 3.0m?
A diatomic gas does 320 J of work and also absorbs 600 cal of heat. What is the change in internal energy of the gas?
A flutist assembles her flute in a room where the speed of sound is 342m/s . When she plays the note A, it is in perfect tune with a 440Hz tuning fork. How many beats per second will she hear if she now plays the note A as the tuning fork is sounde..
A ball rotates in a circle of radius 20.0 cm, making one complete revolution every 2.00 s. What are (a) the speed of the ball, (b) the frequency of motion in hertz, and (c) the angular speed of the ball?
The motor of a four wheeler traveling along a muddy trail generates an average power of 7.90 104 W when moving at a constant speed of 15 m/s. What is the tension in the tow rope pulling the log
A 10.0-g piece of Styrofoam carries a net charge of -0.700 ?C and suspended in equilibrium above the center of a large, What is the charge per unit area on the plastic sheet
A 2,284-kg car is moving down a road with a slope (grade) of 13% at a constant speed of 11 m/s. What is the direction and magnitude of the frictional force
What is the terminal speed for a 76.0 skier going down a 41.0 snow-covered slope on wooden skis = 0.070? Suppose that the skier is 1.80 m tall and 0.500 m wide. Replace mg with net forces parallel to the incline.
For a particular collision you detect the emitted products and find 15 protons, 2 antiprotons, 6 positrons, and 25 neutral particles. How many electrons are also emitted?
Flywheels are large, massive wheels used to store energy. They can be spun up slowly, then the wheel's energy can be released quickly to accomplish a task that demands high power. How much energy is stored in the flywheel
A resistance of ohms ,an inductive reactance of 8 ohms and capacitive reactance of 15 ohms are connected in parallel across 120V, Find total current , power factor
Space vehicles traveling through Earth's radiation belts can intercept a significant number of electrons. Find the resulting surface charge density
During basketball tryouts, Umass walk-on hopeful Dwayne Madison stole a pass at his own free throw line. He then spring straight down the court to the opponent's free throw line, What was his avg acceleration to the midway point
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