What force is required to accelerate a car at a rate of 4 m/s2 if the car has a mass of 37.5 kg?

150

Explanation:I think because f=MxA and the mass is 37.5 kg while acceleation is 4 m/s^2  and when you multiply that is gets 150 so F=150 N

c. heat could easily travel through the molecules in the air and escape/enter the flask. removing the air slows down the heat transfer.  

periodic trends is an atom that gets larger as the number of electronic shells increase, the radius of atoms increases as you go down a certain group in the periodic table of elements. in general, the size of an atom will decrease as you move from left to right of a certain period.