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It has been found that burning 1 liter, or 0.74 kg, of gasoline reduces its rest mass by 3.8 10-10 kg. In an atomic bomb, 8. 1013 J of energy are released for every kg of nuclear fuel undergoing fission-the same energy released in the explosion of roughly 20,000 tons of TNT. Find the ratio of the fractional decrease in mass of the nuclear fuel to the fractional decrease in mass of gasoline when each is burned.
A pulley system has an efficiency of 87.5 percent. How much of the rope must be pulled in if a force of 648 N is is needed to lfit a 150kg desk 2.46m .
Two wires shown below carry currents of 1 amp out of the page and 9 amps into the page. The two wires are separated by 4 meters. Where is the magnetic field zero due to these two wires?
What is the magnitude of the maximum possible acceleration for a car, when the coefficient of static friction is 0.87 and the coefficient of kinetic friction is 0.71
A spring has a period of 10 second, and a time constant of 30 s. Initially it has amplitude of 100 centimeter. Find how long before its amplitude is only 50 centimeter
the minimum stopping distance for a car traveling at a speed of 30msand is 60 m including the distance traveled during
A 20 kg crate is pushed across the floor at a constant velocity of 4 m/s with a force of 100 N. How much energy is lost to heat in the first ten seconds
In a pickup game of dorm shuffleboard, students crazed by final exams use a broom to propel a calculus book along the dorm hallway. If the 2.7 kg book is pushed from rest through a distance of 0.70 m by the horizontal 32 N force from the broom and..
Your car's fuel efficiency is e = 26 miles per gallon. The fuel pump pulls fuel from tank at the same speed. What is the cross-sectional area of the hose in square inches? What is it in square millimeters?
A 0.99-cm-diameter microscope objective has a focal length of 2.6 mm. It is used in visible light with a wavelength of 532 nm. What is the objective's resolving power if used in air
A lamp hangs vertically from a cord in a descending elevator that decelerates at 3.2 m/s2. Find the cord tension when the elevator ascends with an upward acceleration of 3.2m/s2
According to the shop manual, when drilling a 11.8mm--diameter hole in wood, plastic, or aluminum, a drill should have a speed of 1400 rev/min. Find the maximum radial acceleration of any part of the bit
Amy (mass 60kg) and initial velocity +7.5m/s, is skating on ice toward Bob (mass 90kg) and initial velocity +4.0m/s. They collide at some point. Determine amys final speed
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