Find the acceleration due to gravity on the surface of Mars. The mass of Mars is 6.42x1023kg and its radius is 3370km.
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~3.77 m/s²

Explanation:

We can use the equation for finding the acceleration due to gravity on a planet:

We are given the mass of the planet, 6.42 * 10^23 kg, and the radius of the planet, 3370 km.

Let's first convert the radius of the planet to m:

Now, we can plug all of these variables into the equation and solve for g, the acceleration due to gravity on this planet; which, in this case, is Mars.

The acceleration due to gravity on Mars is about 3.77 m/s².

answer: 802.3 kilo joules of energy represents 191.75 kilo calorie of energy.

explanation:

energy released during combustion of one mole methane = 802.3 kilo joules

if 1 kilo joule = 0.239006   kilo calorie

then ,802.3 kilo joule will be = 802.30.239006 kilo calorie

802.3 kilo joule = 191.75 kilo calorie

hence, the energy in kilo calorie is 191.75 kilo calorie.

ice to water 1 water to vapour 2 latent heat