Answer: -194 mph
Explanation:
Taking into account the <u>Sun as the center </u>(origin, point zero) <u>of the reference system</u>, the velocity of the spacecraft relative to the Sun
is:
Note it is <u>positive</u> because the spacecraft is moving <u>away</u> from the Sun
Taking into account the <u>spacecraft as the center of another reference system</u>, the velocity of the asteroid relative to the spacecraft
is:
Note it is <u>negative</u> because the asteroid is moving<u> towards</u> the spacracft.
Now, the velocity of the asteroid relative to the Sun
is:


Finally:
This is the velocity of the asteroid relative to the Sun and its negative sign indicates it is <u>moving towards the Sun</u>.
Answer:
An electromagnet is a magnet that runs on electricity. Unlike a permanent magnet, the strength of an electromagnet can easily be changed by changing the amount of electric current that flows through it. The poles of an electromagnet can even be reversed by reversing the flow of electricity.
Answer:
1.62 L
Explanation:
Charle's law for ideal gases states that for a gas kept at constant pressure, the ratio between volume and temperature is constant:

where in this problem we have
is the initial volume of the gas
is the initial temperature of the gas
is the final volume of the gas
is the final temperature
Solving the equation for V2, we find

It tells us the number of protons that are present in the nucleus, the positively charged region of that atom.
The answer is B.
The planet cannot be too hot or too cold it has to be the right distance from its sun to maintain life.