Answer:
8 minutes and 20 seconds
Explanation:
Average Distance between Earth and Sun: 150 million km = 
km
Velocity of light: 
Time = Distance/Speed
or Time = 
/ 
= 5 * 100
= 500 seconds
⇒ Time = 8 minutes and 20 seconds
Answer: a. E =9.9*EXP(-19)J
1 mole E= 596178J
b. E= 1.32*EXP(-15)J, 1 mole E=795MegaJ
c. E= 1.98*EXP(-23)J
1 mole E = 11.9J
Explanation: The Energy of a photon E, the wavelength are related by
E= h*c/wavelength
h is the Planck's constant 6.6*EXP(-34)J.s
c is speed of light 3*EXP(8)m/s
h*c=1.98*EXP(-25)
Now let's solve
a. E = h*c/wavelength
= h*c/(200*EXP(-9)m
=9.9*EXP(-19)J
1 mole of a photon contian 6.022*EXP(23)photons by advogadro
Now to get the energy of 1 mole of the photon we have
9.9*EXP(-19)*6.023*EXP(23)
=596178J
b. E=h*c/150*EXP(-12)m
=1.32*EXP(-15)J
1 mole will have
1.32*EXP(-15)*6.022*EXP(23)J
=795*EXP(6)J
c. E= h*c/1*EXP(-2)m
=1.98*EXP(-23)J
1 mole of the photon will have
1.98*EXP(-23)J *6.022*EXP(23)
= 11.9J.
You will notice that the longer the wavelength of the photon the lesser the Energy it as.
NOTE: EXP represent 10^
Technology can be the four things listed below...
- Phones
- Computers
- TVs
- Playstation or Xbox
Answer:
Explanation:
When top block is just or about to slide on the lower block then we can say that the frictional force on it will be maximum static friction
So we will have
now for the Net force on two blocks to move together
Answer:
The answer should be C
Explanation:
The reason for that is because electromagnet needs electricity to start attracting anything at all but it's attracting power is also stronger because of it
Warning: This may or may not be a completely correct answer, hope you compare answer and don't blindly trust my answer
