Pick the correct word to fill up the blank in below question: magnetic field, atmospheric layers, gravitational pull, attraction force.
A rocket ship going from Earth to the moon must leave the___ ___ of Earth due to its mass.
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The slope of a velocity time graph over any interval of time gives the during that interval

On a day when the barometer reads 75.23 cm, a reaction vessel holds 250 ml of ideal gas at 20 celsius. an oil manometer ( ρ= 810 kg/m^3) reads the pressure in the vessel to be 41 cm of oil and below atmospheric pressure. what volume will the gas occupy under s.t.p.?

Considering only the earth's rotation, determine how much later the asteroid would have had to arrive to put the explosion above helsinki at longitude 25˚ e? this would have obliterated the city.