Which statement about the physical change of liquid water boiling into steam is true?
a. the heat added represents an energy change
b. the action cannot be reversed
c. the steam cannot conserve mass
d. the weight lost represents a mass change.

Answer;

The heat added represents an energy change.

Explanation;

-Physical changes are changes affecting the form of a chemical substance, but not its chemical composition.

-Physical changes are used to separate mixtures into their component compounds, but can not usually be used to separate compounds into chemical elements or simpler compounds.

Examples of Physical changes:

initial speed when it is dropped is 150 ft/s

now at the same moment the acceleration due to gravity is perpendicular to its velocity

so as we know that

now we have centripetal acceleration a = 32 ft/s^2 as its perpendicular to velocity

while tangential acceleration at the same moment will be zero

so

now radius of curvature is given as

so the radius of curvature just after it is dropped is 703.125 ft