Part II. True or False 1. Bernoulli’s principle is a statement of energy conservation in static fluids.
2. For most solids, the coefficient of volume expansion is proportional to the coefficient
of linear expansion.
3. Latent heat of a material does not affect the amount of heat transfer across a slab
by conduction.
4. If the net force acting upon a body is zero, the particle is always at rest.
5. A football kicked at an angle 0 with respect to the horizontal means that the
acceleration is 9.8m/s2 at all times.
6. Equilibrant force is the combination of all the forces acting on an object.
7. Reflection occurs when there is the presence of medium where light can travel.
8. Diverging Lenses always have negative focal length.
9. The total mechanical energy in the system must always be equal to zero.
10. Electric field is the strongest when it is close to the charged particle creating the
field.

to treat tumors in the body

568.98

explanation:

its math

what was the answer?

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.