How does the heat move through the space between the Sun and the Earth? Match the heat transfer mechanisms in space and on Earth
with the correct description.
the choices are
1. electromagnetic waves transfer energy through space to Earth
2. heat energy on Earth escapes into space
3. moves from warmer to cooler
4. touching, direct contact
5. warm air circulates towards cooler polar regions
6. flow of heat energy through liquids and gases
7. heat energy transferred
8. responsible for weather patterns on Earth
9. transfer of heat through soil by the movement of molecules
10. warm air in atmosphere rises and is replaced by cooler air
the choices are
1. electromagnetic waves transfer energy through space to Earth
2. heat energy on Earth escapes into space
3. moves from warmer to cooler
4. touching, direct contact
5. warm air circulates towards cooler polar regions
6. flow of heat energy through liquids and gases
7. heat energy transferred
8. responsible for weather patterns on Earth
9. transfer of heat through soil by the movement of molecules
10. warm air in atmosphere rises and is replaced by cooler air
2 answers:
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Answer: Boyle’s law
Explanation:
Boyle's Law: This law states that pressure is inversely proportional to the volume of the gas at constant temperature and number of moles.
(At constant temperature and number of moles)
As pressure is decreased to half, the volume is increased to doubled.
Charles' Law: This law states that volume is directly proportional to the temperature of the gas at constant pressure and number of moles.
(At constant pressure and number of moles)
Gay-Lussac's Law: This law states that pressure is directly proportional to the temperature of the gas at constant volume and number of moles.
(At constant volume and number of moles)
Combined gas Law: combining the three laws:
Answer:
Part a)
Velocity of sled
velocity of first man who jump off
Part b)
Velocity of sled
Also the speed of second person is given as
Part c)
change in kinetic energy of sled + two people is given as
Explanation:
As we know that here we we consider both people + sled as a system then there is no external force on it
So here we can use momentum conservation
since both people + sled is at rest initially so initial total momentum is zero
now when first people will jump with relative velocity "s" then let say the sled + other people will move off with speed v
so by momentum conservation we have
so velocity of the sled + other person is
velocity of first man who jump off
Part b)
now when other man also jump off with same relative velocity
so let say the sled is now moving with speed vf
so by momentum conservation we have
Now we have
Also the speed of second person is given as
Part c)
change in kinetic energy of sled + two people is given as
here we know all values of speed as we found it in part a) and part b)