6. A capacitor of charge 3 x 10 coulomb has a potential of 50volts. What is the capacitance of the capacitor?

C = Q/V

where C is capacitance, Q is charge and V is voltage

C = (3×10)/50

C = 30/50

= 0.6F where F is in Farads

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 .

this could be newton#'s law of cooling. the cooling curve is exponential