Listed below are characteristics and effects of the four fundamental forces: gravity, electromagnetism, the strong force, and the weak force. match each item to the correct fundamental force. drag the appropriate items to their respective bins.

Incomplete Question

Explanation:

To answer this question, I'll give brief definition and some examples of each forces.

Gravity:

Gravity, or gravitation, is a natural phenomenon by which all things with mass or energy are brought toward one another.

Examples

Falling Apple

Weight

Jumping up and down

Kicking a football

Electromagnetism:

Electromagnetic force is a type of physical interaction that occurs between electrically charged particles. It acts between charged particles and is the combination of all magnetic and electrical forces.

Examples

Force in

Fans

Magnets

CD Players

Doorbell

Electric Motor

Strong Force:

This is the most powerful force of all forces. It has one of the shortest interaction distances.

Examples

Nuclear Energy

Atomic bomb

Weak Force:

The weak force is so named because although it is stronger than gravity, it is only effective at very short distances (10-18 m).

Examples

Nuclear Decay

Radioactive decay

the answer is b, have negligible mass

scattering of light by tiny particles in air to produce the colors we see on sky, is dependent on the following factors:

(i) wavelength of light

(ii) size of the scattering particle  

(iii) distance traveled by light through the atmosphere.

according to rayleigh's law of scattering, the amount of scattering is inversely proportional to the fourth power of its wavelength. shorter the wavelength, greater is its scattering. hence violet/blue light is scattered more than red.

sun's light is a composite light ( visible light) with wavelengths in the range 400 nm (violet) to 700 nm (red). as sunlight passes through our atmosphere, the molecules of air scatter light according to their wavelengths. during sunrise and sunset, the sun's position is below the horizon. hence light from the sun travels a greater distance in the atmosphere when compared to its position a noon.

as sunlight enters the earth's atmosphere, blue light is scattered away and at the end of its journey in the sky, only red and orange wavelengths remain in the beam.

hence at sunrise and sunset, the sky appears reddish orange.