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An undiscovered planet, many lightyears from Earth, has one moon in a periodic orbit. This moon takes 17.0 days on
average to complete one nearly circular revolution around the unnamed planet. If the distance from the center of the moon
to the surface of the planet is 2.120 x 10km and the planet has a radius of 3.750 x 10 km, calculate the moon's radial
acceleration a.

Porque crees que el agua no podia subir mas de 10 m de altura con ese tipo de bomba

(2) (a) you have a simple circuit that consists of only a battery (δvbat=1.5v) and two resistors with resistance r1=10ω and r2=5ω, connected in series with each other. what is the current running through the battery? (b) you re-arrange your circuit so now r2 is attached in parallel to r1 rather than in series. what is the current running through the battery? (c) you add an additional resistor r3=7ω on the same branch as r2. what is the current running through the battery? (d) what is the power dissipated in r3?

The sound level near a noisy air conditioner is 70 db. if two such units operate side by side, the sound level near the, would bea. 70dbb. 73 dbc. 105 dbd 140 db