Acube of balsa wood (side length = 0.25 m) is tied with a string to the bottom of a waterfilled container. the wood is completely immersed. what is the tension in the string?

The tension in the string is 128.625 N.

Explanation:

Given that,

Side length = 0.25 m

Density of balsa wood = 160 kg/m³

We need to calculate the volume of the cube

We need to calculate the mass

Using formula of density

Put the value in to the formula

We need to calculate the weight

We need to calculate the buoyant force

Where, V = volume

= gravity

g = acceleration due to gravity

Put the value into the formula

We need to calculate the tension in the string

Hence, The tension in the string is 128.625 N.

i think the answer is a, hope this is right, that would be my best guess.

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