7. Challenge: The unit of force is the newton (N). One newton is the force required to accelerate a 1-kg object at a rate of 1 m/s? Suppose each fan supplies a force of 2 N. Use Newton's second law and the
Gizmo to find the following.
A. The mass of the cart:
I
B. The mass of a fan:
C. The mass of one of the draggable mass units

Which property of fossils allow scientists to determine the relative rock ages..

Assume that a person skiing high in the mountains at an altitude of h = 15100 ft takes in the same volume of air with each breath as she does while walking at sea level. determine the ratio of the mass of oxygen inhaled for each breath at this high altitude compared to that at sea level. assume that the air composition (i.e. % of air that is oxygen) is the same at sea level as it is at 15100 ft.

In a good thermo flask the main cause of heat loss is