Answer:
See below
Explanation:
Things generally expand when heated ....so <u>volume increases</u> while mass remains the same .....this will cause the value of density to decrease
The difference is (80 dB - 40 dB) = 40 dB.
The sound is 40 dB louder outside.
Each 10 dB means 10 times more sound power.
40 dB louder means 10x10x10x10 times more sound power.
That's <em>10,000 times</em> more sound power outside than inside.
Q=l^2 times R times t
Where Q - heat, I -current, R - resistance and t is time
If you increase I twice (and it's squared), than Q gonna went up 4 times (2 squared).
Choose last
The total mass of the mixture would not change.
Think about it as a mix of marbles. Suppose you have a group of 10 marbles. 5 marbles are red, and 5 marbles are blue. If you separate the marbles into 2 different groups by color, you still have 10 marbles in total, but they are separated and no longer a mixture of colors.
