Please help with these 3 questions. 1) Find the change in heat content of the system
2) How much heat has been absorbed by the ethanol
3) How much energy is needed to heat the water

F₂ = 3.97 F₁

Hence, the force will be increased by a factor of 3.97

Explanation:

The force between the ball and the bowling pin is given by Newton's Gravitational Law, as follows:

F = Gm₁m₂/r²

where,

F = Force

G = Gravitational Constant

m₁ = mass of ball

m₂ = mass of bowling pin

r = distance between ball and bowling pin

So, initially:

F₁ = G(3.6 kg)(1.36 kg)/r²

F₁ = 4.896 G/r²

After increase in masses:

F₂ = G(7.2 kg)(2.7 kg)/r²

F₂ = 19.44 G/r²

F₂/F₁ = (19.44 Gr²)/(4.896 G/r²)

F₂ = 3.97 F₁

Hence, the force will be increased by a factor of 3.97