1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
shepuryov [24]
3 years ago
14

Which two conditions must exist in order for radiation to occur

Physics
2 answers:
nignag [31]3 years ago
8 0
A temperature difference and the presence of electromagnetic waves
Bess [88]3 years ago
3 0

Answer:

D) a temperature difference and the presence of electromagnetic waves

Explanation:

Which two conditions must exist in order for radiation to occur?

the presence of a solid, liquid, or gas and a temperature difference

direct contact of molecules and the presence of a solid, liquid, or gas

the presence of electromagnetic waves and direct contact of molecules

a temperature difference and the presence of electromagnetic waves

You might be interested in
A 360-nm thick oil film floats on the surface of a pool of water. the indices of refraction of the oil and the water are 1.5 and
jenyasd209 [6]
The correct answer is 432, and 720.
The thickness of a film is t= 360nm
the refractive index of oil n₀t = (m +1/2) λ
For m =0
λ = 4n₀t
= 4(1.50)(360)
= 2160nm
for m = 1
λ = 4n₀t
= 4(1.50)(360)/3
= 720nm
m = 2
λ = 4n₀t/5 = 4(1.50)(360)/5
= 432nm
The wavelength which are most strongly reflected are
432nm, 720nm.
7 0
3 years ago
6. An object accelerates from rest to 70 m/s in 3.5 s. What is the acceleration of the object?
sweet-ann [11.9K]

Answer:

The acceleration of the object is 20 meters per second square = 20 m/s^2

Explanation:

Recall that acceleration is defined as the change in velocity divided the time it takes for the change. Therefore , if the object accelerates from rest (zero velocity) to 70 m/s , the change in velocity is (70 m/s - 0 m/s = 70 m/s)

which divided by the 3.5 seconds it took for the change, gives:

acceleration = (70 m/s  /  3.5 s ) = 20  m/s^2

4 0
3 years ago
(TIMED) Anyone know the answer to this question?
KengaRu [80]

I believe C is your answer (also, I am also using tht same exact program!)

7 0
4 years ago
Read 2 more answers
The sun’s energy is most useful to humans after it is converted to _____.
Trava [24]
The sun’s energy is most useful to humans after it is converted to chemical energy. Living organisms like humans and animals could not directly utilize the energy from the sun because of lack in organs that would allow photosynthesis. Humans and animals obtain the energy from the sun from the intake of food. These foods contain chemical energy which is obtained from the solar energy of the sun. Plants use solar energy for photosynthesis which converts the energy into chemical energy. Then, animals and humans eat the plants obtaining the chemical energy which can readily processed by the body as compared to solar energy.
7 0
3 years ago
Why would knowing the characteristics of circuits be important in designing electrical circuits?
blondinia [14]
The characteristic of a circuit actually indicate how the circuit functions. When one designs a circuit they have a specific function in mind and must know how to combine components in order to fulfill this functions.
8 0
3 years ago
Read 2 more answers
Other questions:
  • Which value from his calculation most strongly affects the number of significant figures in the answer?
    14·1 answer
  • When on object’s spectral lines are shifted from their rest wavelengths to longer wavelengths, we say that the object’s spectrum
    7·1 answer
  • A 70 kilogram mountaineer is standing on the summit of Mt. Everest. The distance between the mountaineer and the center of Earth
    9·2 answers
  • CAN SOMEONE PLEASE HELP ME!!?<br> I NEED HELP PLEASE!!
    15·1 answer
  • The area of a triangle is 30 m². Using the equation A=12bh A = 1 2 b h , where b is base and h is height, solve for h if b = 3 m
    6·1 answer
  • How does the water cycle affect weather and climate?
    14·2 answers
  • How fast is a car going in m/5 if speedometer reads 45 miles?
    8·1 answer
  • Newton's third law is sometimes summarized as "for every action, there's an equal opposite reaction" but when you jump from eart
    15·1 answer
  • A positive charge means:
    14·2 answers
  • Which quantity must be the same for two bodies in thermal equilibrium?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!