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A particular car does work at the rate of about 7.0 kJ/s when traveling at a steady 21.8 m/s along a level road. This is the work done against friction. The car can travel 17 km on 1.0 L of gasoline at this speed (about 40 mi/gal). What is the minimum value for TH TL if is 25°C? The energy available from 1.0 L of gas is 3.2 x 107 J.
A long wire is known to have a radius greater than 5.2 mm and to carry a current that is uniformly distributed over its cross section, What is the radius (in mm) of the wire
A meter stick lies on the bottom of a 100 cm long tank with its zero mark against the left edge. You look into the tank at a 30 angle, with your line of sight just grazing the upper left edge of the tank.
After 10.7 s, a spinning roulette wheel has slowed down to anangular velocity of 2.25 rad/s. Determine the angular displacement of the wheel
Unpolarized light passes through two Polaroid sheets. Thetransmission axis of the analyzer makes an angle of 20.1° with the axis of the polarizer. What fraction of the original light is absorbed by the analyzer
A conical pendulum is formed by attaching a 50 gram mass to a 2 meter string. The mass swings around a horizontal circle of radius 1 meter. Find what is the acceleration of the mass
A series R-L-C circuit is connected to a 150Hz ac source that has Vrms = 80.0V. What average power is delivered to the circuit by the source
two 3.25-microf capacitors are connected in series across the terminals of a 50.0-hz ac generator that has a peak
If the coefficient of friction between road and tires on a rainy day is 0.120, what is the minimum distance in which the car will stop.
Fig. 23-1 shows equipotentials surrounding a pair of charges QA and QB. The value of the potential half-way between the charges is indicated. Which of the statements below applies to the charges?
A 1600 kW heat engineoperates at 21% efficiency. The heat energy expelled at thelow temperature is absorbed by a stream of water that enters thecooling coils at 20°C. determine the increase in temperature of the water
Two campers carry their gear (90.7kg) on a light, rigid horizontal pole whose ends they support on their shoulders 1.83m apart. If Holly experiences a compressive force of 534N, what force will Rocky feel? (b) Where is the load hung on the pole (mea..
The photograph shows an electron beam whose initial direction of motion is horizontal, from right to left. A magnetic field deflects the beam downward. What is the direction of the magnetic field?
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