Find the force a 68.5 kg person would experience while standing on the surface of mars. mars has a mass of 6.43 x 1023 kg and a radius of 3.43 x 106m from its center to the surface.

The correct answer is F=249.82N.

Step-by-step explanation:

The expression for the gravitational force is as follows:

Here, M, m are the masses, G is the universal gravitational constant and r is the distance between masses.

It is given in the problem that a person having mass 68.5 kg experience a force while standing on the surface of mars.

Put m= 68.5 kg, , and in the above expression.

F=249.82 N

Therefore, the correct answer is F=249.82 N.

d. bc = 12 and ef = 16

step-by-step explanation:

we are given that δabc : δdef such that .

also, it is given that

so, from the options, we need that .

a.

b.

c.  

d.

as, we can see that only option d gives the same ratio as i.e. .

hence, the possible lengths are bc = 12 and ef = 16.