Safe slides with a constant speed
Bonnie and Clyde are sliding a 319 bank safe across the floor to their getaway car. The safe slides with a constant speed if Clyde pushes from behind with 387 of force while Bonnie pulls forward on a rope with 349 of force.
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A model car is propelled by a cylinder of carbon dioxide gas. The cylinder emits gas at a rate of 4.5 g/s with an exit speed of 80.0 m/s. The car has a mass of 400 g, including the CO2 cylinder. Starting from rest, what is the car's initial accel
how many stars would we have to search before we would expect to hear a signal? Assume there are 500 billion stars in the galaxy. How does your answer change if there are only 110 civilizations instead of 1.2×104?
To what degree can we predict their behavior? Give an example of a situation in which the prediction is simple and one in which it is difficult or impossible.
current source produces a current of I when a wire connects the terminals. When a device is instead connected to the terminals the current drops to I I and the voltage across the terminals is V .
How strong is the electric field between the plates of a 0.60 mu F air-gap capacitor if they are 3.0 mm apart and each has a charge of 70 mu C?
Suppose the collision between the packages is elastic. To what height does the package of mass m rebound?
Walt Whitman is sometimes called the "poet of democracy." He himself claims in his poetry to represent all men and all women. Does he succeed in being representative? Why or why not?
What is the smallest L you could use and avoid blowing the 20 A fuse? A similar circuit consists of a capacitor connected directly to a wall receptacle.
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