Physics, 12.02.2020 15:48 simojo

Where does the gravitational potential energy of an object come from?

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Physics, 22.06.2019 00:00, cchsemily7210

A1000-kg weather rocket is launched straight up. the rocket motor provides a constant acceleration for 16-s, then the motor stops. the rocket altitude 20-s after launch is 510-m. you can ignore any effects of air resistance. a. what was the rocket’s acceleration during the first 16-s? b. what is the rocket’s speed as it passes through a cloud 5100-m above the ground?

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Physics, 22.06.2019 05:00, damientran

The image below shows numerous volcanic mountains in the pacific northwest. what is the most likely cause of the volcanic and earthquake activity in this region?

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Physics, 22.06.2019 11:30, glizbethh00

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Physics, 22.06.2019 11:50, azertyqwerty123

Two resistors r1 and r2 may be connected either in series or parallel across an ideal battery with emf ε. we desire the rate of energy dissipation of the parallel combination to be 8.75 times that of the series combination. if r1 = 105 ω, what are the (a) smaller and (b) larger of the two values of r2 that result in that dissipation rate?