Stan does 178 j of work lifting himself 0.5 m. what is stan’s mass? the acceleration of gravity is 9.8 m/s 2 . answer in units of kg

Explanation:

The work is defined as the force needed to move an object a certain distance, if there's no change of position, there's no work.

In this case, the work is defined:

Where is the weight defined with the following equation

Now, we'll replace all given values and solve for :

Therefore, the mass is 36.33 kilograms.

answer: the rock sample is a sedimentary rock.

explanation:

it is given that:

mass of rock sample, m = 2.7 g

volume of rock sample,

so, density of rock sample will be

since, the density of rock sample is . hence, the rock sample is a sedimentary rock, whose densities varies between .