Physics, 24.03.2020 01:23, microwave13016
It's possible for a determined group of people to pull an aircraft. Drag is negligible at low speeds, and the only force impeding motion is the rolling friction of the rubber tires on the concrete runway. In 2000, a team of 60 British police officers set a world record by pulling a Boeing 747, with a mass of 200,000 kg, a distance of 100 m in 53 s. The plane started at rest. Suppose that μr=0.02.
Estimate the force with which each officer pulled on the plane, assuming constant pulling force and constant acceleration.
Answers: 1
Physics, 22.06.2019 10:30, zoebtharpe
An insulated 40 ft^3 rigid tank contains air at 50 psia and 120°f. a valve connected to the tank is now opened, and air is allowed to escape until the pressure inside drops to 25 psia. the air temperature during this process is kept constant by an electric resistance heater placed in the tank. determine the electrical work done during this process.
Answers: 2
Physics, 22.06.2019 10:30, alwaysneedhelp8420
If y gets smaller as x gets bigger and y have an relationship?
Answers: 1
It's possible for a determined group of people to pull an aircraft. Drag is negligible at low speeds...
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