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
Anika [276]
3 years ago
6

The black board appears black because:

Physics
1 answer:
marishachu [46]3 years ago
8 0

Answer:

I think its C All visible light wavelengths (ROYGBV) are absorbed by the board

You might be interested in
PLS PLS PLS PLS PLS PLS PLS PLS PLS PLS PLS HELP
7nadin3 [17]

Answer:

The poles of an electromagnet can even be reversed by reversing the flow of electricity. If a wire carrying an electric current is formed into a series of loops, the magnetic field can be concentrated within the loops. ... All of their little magnetic fields add together, creating a stronger magnetic field.

Explanation:

8 0
3 years ago
An astronaut is stationary in space. Which of these would have the greatest speed as observed by the astronaut?
yaroslaw [1]
Hello!

The answer that makes most sense to me is option A.

~ Hope I helped! ~
7 0
3 years ago
Read 2 more answers
In a thundercloud there may be electric charges of 45.0 C near the top of the cloud and -45.0 C near the bottom of the cloud. Th
Gala2k [10]

Answer:

The electric force on the top charge is F=3.44\times 10^6\ N.

Explanation:

Given that,

Electric charges in a thundercloud, q_1=q_2=45\ C

The distance between charges, d = 2.3 km = 2300 m

Let F is the electric force on the top charge. The electric force is given by the formula as :

F=\dfrac{kq^2}{d^2}

F=\dfrac{9\times 10^9\times (45)^2}{(2300)^2}

F=3445179.58\ N

or

F=3.44\times 10^6\ N

So, the electric force on the top charge is F=3.44\times 10^6\ N. Hence, this is the required solution.                                                

7 0
3 years ago
Things you can do to help decrease global warming include: *
Ksivusya [100]
Seriously... B the other options are rediculous
4 0
3 years ago
Read 2 more answers
1 m is equivalent to how many centimeters in the metric system
gladu [14]

100. A centimeter is a 100th of a meter.

5 0
3 years ago
Other questions:
  • A box slides with uniform acceleration up an incline. The box has an initial speed of 9.0 m/s and rises vertically 2.60 m before
    10·1 answer
  • Which of the following statements is an accurate description of vibrations?
    5·2 answers
  • Find the electric force acting on an alpha particle in a horizontal electric field of 600N/C
    10·1 answer
  • The safe load, L, of a wooden beam supported at both ends varies jointly as the width, w, the square of the depth, d, and invers
    12·1 answer
  • There is a force which resists changes in motion, called
    12·1 answer
  • Two people are standing on a 3.12-m-long platform, one at each end. The platform floats parallel to the ground on a cushion of a
    11·2 answers
  • Joe loves joe so yes​
    12·2 answers
  • Whose data did Kepler use to describe the motion of the planets?
    9·2 answers
  • Solve for the length of the inclined plane if the angle equals 19.45 degrees.
    11·1 answer
  • How much force is needed to stretch a spring 1. 2 m if the spring constant is 8. 5 N/m? 7. 1 N 7. 3 N 9. 7 N 10. 2 N.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!