Answer: C
Star B, Star A, Star C
Because red it the least hottest and blue is the hottest
Answer:
Explanation:
The answer is B. He needs to count backwards. So if it’s 800,700,600, and 500, you might get the answer right.
Answer:
If you take out air they'll fall at the same time
Explanation:
for example a closed umbrella will fall faster than an open one because the air is holding the opened umbrella back
The volume of the balloon will halve
Explanation:
Boyle's law states that for an ideal gas kept at constant temperature, the pressure of the gas is proportional to its volume. Mathematically,
where
p is the gas pressure
V is the volume
The equation can also be rewritten as
And if we apply it to the gas inside the balloon in this problem (assuming its temperature is constant), we have:
is the initial pressure at sea level (the atmospheric pressure)
is the initial volume
is the final pressure
is the final volume
Substituting into the equation, we find:
Which means that the volume of the balloon will halve.
Learn more about ideal gases:
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