The gravitational field strength (g) at the surface of Mars is 3.7N kg-1 The radius (r) of Mars is 3.4x10(6)m

Use Newton’s universal law of gravitation to calculate the mass of Mars where G=6.67x10(-11)m3 kg-1 s-2

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The radiation of the fire causes the saucepan to heat up. the conduction of the saucepan then to distribute the heat over the saucepan and to give heat to the water. the convection of the water distributing the heat within the water, till all the water is boiling

It is either a  proton or a neutron im almost positive. hope this .

Because there is no air in the jar, the vibrations can not travel through the air and create sound.  (that's why there is no sound in space, there is no air)