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Imagine your car is powered by a fusion engine in which the following reaction occurs: 31H2 ---->2He4 + 1H1 + 0n1 The atomic masses are 1H2 ( 2.0141 u), 2He4 (4.0026 u), 1H1 (1.0078 u), and 0n1 (1.0087 u). The engine uses 4.28 x 10-6 kg of deuterium fuel. If one gallon of gasoline produces 1.37 x 109 J of energy, how many gallons of gasoline would have to be burned to equal the energy released by all the deuterium fuel?
Estimate the size of the friction force on a baseball player sliding into second base. Assume a mass of 84 and uk = 0.42
A bas traveling at 25.0 m/s applies the brakes and decelerates uniformly at a rate of 1.2 m/s ? What is its velocity at the end of this time interval
The hare waits for a while after the tortoise passes and then runs toward the finish line again at 7.45 m/s. Both the hare and the tortoise cross the finish line at the exact same instant.
The outer surface of a skier's clothes of emissivity 0.700 is at a temperature of 7.40° C. Find the rate of radiation if the skier has a surface area of 1.50 m2
In a crash test, a test car of mass 1711 kg is moving at a speed of 37.2 m/s when it crashes into a wall. how much average power (in W) is expended in this process
A standard 100 W (120 V) lightbulb contains a 9.90cm -long tungsten filament. The high-temperature resistivity of tungsten, What is the diameter of the filament
A blacksmith cools a 1.30-kg chunk of iron, initially at a temperature of 650.0?C, by trickling 15.0?C water over it. How much water did the blacksmith trickle over the iron
A bolt drops from the ceiling of a moving train car that is accelerating northward at a rate of 1.81 m/s2. What is the acceleration of the bolt relative to the train car
The radius of our galaxy is 3 *10^20m, How much time would elapse on earth during the traversal
A pencil is held perpendicular to the optical axis of a concave spherical mirror. The pencil is 91 cm from the center of the mirror, What is the magnification of the pencil's image
A ladder of length L = 2.5 m and mass m = 15.0 kg rests on a floor with coefficient of static friction ?s = 0.57. Assume the wall is frictionless. What is the minimum angle to keep the ladder from sliding
A flight attendant pulls her 75 N flight bag a distance of 305 m along a level airport floor at a constant velocity. Find the work done by the force of friction on the flight bag
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