Answer:
Heat transport from Sun to Earth is accomplished primarily by electromagnetic radiation.
Explanation:
We define radiation as the transfer of energy by particles or waves (as in this case) in a material medium or empty space.
The Sun is a star that emits radiation in the electromagnetic spectrum. Approximately 49% of it is in the near infrared part, 43% in the visible part (light), 7% in the UV part and the 1% left is a mixture of radio and gamma waves and X-rays.
Of the Sun's energy that reaches Earth around 30% is reflected by the atmosphere and the Earth, around 20% is absorbed by clouds and approximately 50% is absorbed by land and sea.
Answer:
Option (a), (d) are correct.
Explanation:
Frequency, f = 220 Hz
Resonant frequency = 660 Hz
The next frequency of stopped organ pipe is
2f, 3 f, 4 f ....
= 2 x 220 , 3 x 220 , 4 x 220 ....
= 440 Hz, 660 Hz, 880 Hz
So, the option (a) is correct.
The next resonant frequency of open organ pipe is
3 f, 5 f,...
= 3 x 220, 5 x 220 , ..
= 660 Hz, 1100 Hz,...
So, option (d) is correct.
A constellation is a group of stars.
Since human brains have evolved to look for patterns,
we sometimes seem to see patterns in groups of points.
Different people make different pictures from the patterns ...
it depends on what they have on their mind.
Net force = Pull force - Friction (Opposing force) = 700 - 215 = 485 N
The sequence that correctly traces the flow of energy needed to move an automobile is this one:
<span>chemical energy; heat energy; kinetic energy.
</span>First, the chemicals in the car are stirred so as to start the process. Then, the gas is heated so as to prepare to start the car. And in the end, kinetics takes its course and moves the car.