Answer:
103.5m/5.5s= 18.8m/s
Explanation:
Formula for finding velocity average is:
v average= change in x(meters)/ change in time(seconds).
7 is the answer.................................
C) Infrared.
<h3>Explanation</h3>
The wavelength of the "primary" (a.k.a. "peak") outgoing radiation from the earth depends on the surface temperature of the earth.
,
where
- is the peak wavelength (in meters) of the outgoing radiation, and
- is the absolute temperature of the earth (the one in degrees Kelvins.)
The average temperature on the earth is around 15 °C (around 60 °F.)
Convert to degrees Kelvins:
.
Peak wavelength:
.
What kind of electromagnetic radiation is that? Refer to a chart of the EM spectrum.
Radiations:
- : ultra-violet (UV) or radiations that are more energetic than UV;
- : visible light;
- : infrared (IR) and less energetic radiations.
is longer than the wavelength of visible light. The radiation is infrared (IR.)
E=hf
Where h is constant
h - Planck constant
f - frequiency
E equals 6.626 times 10 in the minus 34th times 5.2 times 10 in the 15th
Equals 3.44552 time 10 in the minus 18th
Unfortunately there's no diagram with this. it looks like an Atwood's machine with a variable mass on one side of the pulley.