On a small planet, an astronaut uses a vertical
force of 175 newtons to lift an 87.5-kilogram
boulder at constant velocity to a height of
0.350 meter above the planet’s surface. what is
the magnitude of the gravitational field strength
on the surface of the planet?
(1) 0.500 n/kg (3) 9.81 n/kg
(2) 2.00 n/kg (4) 61.3 n/kg

Explanation:

A gravitational flied is defined as the quotient between the gravitational force and the mass:

Replacing all given values, we have:

Therefore, the gravitational filed is approximately 2.00 N/kg.

explanation:

earth's surface is mainly heated by the absorption of infrared radiation from the sun.

evaporation occurs because molecules in liquid water are warmed ( usually by the sun) and vibrate quicker, becoming less dense and rise.

condensation occurs because molecules in water vapor are cooled and therefore vibrate more slowly thus becoming more dense and eventually fall to earth.

lines of equal barometric pressure on a weather map are called: isobars : lines of equal temp on a weather map are called: isotherms.​

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