The air inside becomes warmer, and that makes it LESS DENSE.
Less-dense air FLOATS in denser air. Since it's inside the balloon, it picks the balloon up when it floats.
Answer:
1.01 × 1013 picometres
Explanation:
multiply the length value by 1e+9
60.2 J
Efficiency is the ratio of work out to work in.
e = Wout / Win
0.86 = Wout / 70 J
Wout = 60.2 J
as the surface area increases the rate of reaction also increases.
