A. What is the mass of a book that weighs 3.20 N in the laboratory?

B.In the same lab, what is the weight of a dog whose mass is 14.0 kg?

To find the mass of an object, you can use the formula:

Weight = mass * gravitational acceleration

Where weight is measured in Newtons (N), mass is measured in kilograms (kg), and the gravitational acceleration on Earth is approximately 9.8 m/s^2.

A. To find the mass of the book that weighs 3.20 N in the laboratory, you need to rearrange the formula:

Mass = Weight / gravitational acceleration

Substituting the given values, you have:

Mass = 3.20 N / 9.8 m/s^2

After performing the calculation, you will find the mass of the book in kilograms.

B. To find the weight of a dog whose mass is 14.0 kg in the same lab, you can use the same formula, but rearrange it to solve for weight:

Weight = mass * gravitational acceleration

Substituting the given values, you have:

Weight = 14.0 kg * 9.8 m/s^2

After performing the calculation, you will find the weight of the dog in Newtons.