Answer:
a. when the acceleration of the objects become negative
You would convert from grams to
moles by using the molar mass of the substance. The answer is letter B. for
example, the molar mass Carbon dioxide is 44.01 g/mol. It means that for 1 mole
of carbon dioxide, it contains 44.01 grams of Carbon dioxide.
Explanation:
first, find the circumference of the wheel by using the formula 2(pi)(r):
2(pi)(19) = 119.380521
divide by 25 secs
119.380521/25 = 4.77522083
round to the nearest tenth is 4.8, so the speed is 4.8mm/sec
Answer:
Force of gravity, F = 0.74 N
Mass of an object, m = 1.2 kg
Distance above earth's surface, 
Mass of Earth, 
Radius of Earth, 
We need to find the force of gravity above the surface of Earth. It is given by :

R = r + d
R = 25370000 m

F = 0.74 N
So, the force of gravity on the object is 0.74 N. Hence, this is the required solution.