Light is form of electromagnetic radiation. It has certain frequency and wavelength. The carriers of light are called photons. Photons have dual particle-wave properties but they are not considered to be matter.
The definition of photons excludes answer A).
All electromagnetic radiation is energy. So the B) is correct answer.
Color is perceived in our eyes as a response to different wavelengths of a light. This excludes answer C).
Answer:
soil additive
Explanation:
Soil Additive
The three main components of humus are fulvic acid, humic acid and humin. The spongy nature of humus helps it to trap and hold water, this particular property also helps to aerate the soil as humus expands and contracts with available water.
Answer:
180 degrees
Explanation:
if the waves are in phase this means that their frequency is doubled or amplitude is doubled
Work is measured in joules, so you're question was already answered! 75 joules of work was required.
However, if you're asking about the force that was required, you're answer would be 25 N of force.
work= force x distance
75= f x 3
75= 25 x 3
Answer:
<em>Rt = 8 ohm</em>
<em>I = 2 A</em>
<em>Vab = 12 V</em>
<em>VbΓ = 4 V</em>
<em>VaΓ = 16 V</em>
Explanation:
<u>Electric Circuits</u>
We'll apply Ohm's formula to solve the circuit shown on the image:
V = R.I
Where V is the voltage, R is the resistance, and I is the current.
The circuit has two resistances connected in series, thus the total resistance is:
Rt = R1 + R2 = 6 ohm + 2 ohm = 8 ohm
Now the current is:
I = 2 A
The voltages are calculated below:
Vab = R1 * I = 6 ohm * 2 A = 12 V
VbΓ = R2 * I = 2 ohm * 2 A = 4 V
VaΓ = Vab + VbΓ = 12 V + 4 V = 16 V