Answer: last option, 0.22 N
Explanation:
Weight is the attractive force that the Earth exerts on the objects, and it is calculated as the product of the mass of the object and the gravitational acceleration: w = mg.
Gravitational acceleration depends of the height of the objects but it is almost a constant at the normal altitudes (near the surface) with which this kind of problems deal with. Of course, this is true at sea level on Earth.
A standard value used for g is 9.81 m/s^2. And for quick or approximate calculations it can be used 10 m/s^2.
So, to calculate what is the weight of a mouse at sea level on Earth, when you have that the mass of a mouse is around 22 grams (0.022kg), you folow these steps:
1) Data:
2) Formula: w = mg
3) Solution: w = 0.022 kg (10 m/s^2) = 0.22 N.
So, the answer is the last option: 0.22N.
