Occurs when an energy source transfers heat directly to another object through space; an example would be an object becoming warm by sitting in the sunshine. a. conduction c. convection b. radiation d. heat select the best answer from the choices provided a b c d

b. radiation

Explanation:

In order to answer correctly, let's describe the three method of transfer of heat:

1) Conduction: conduction occurs when heat is transferred through two materials which are directly in contact with each other. The transfer of heat occurs because the kinetic energy of the particles in the first medium is transferred through collisions to the particles in the second medium. Conduction can occurs in solids, liquids and gases, but it cannot occur in empty space

2) Convection: convection occurs when a fluid is heated by an external source. In this case, the particles of the fluid closer to the source of heat are heated faster, therefore the area of fluid near the source becomes warmer and less dense, therefore rises and it is replaced by the colder parts of the fluid, and so on, creating a convection current. Convection occurs only in fluids (liquids or gases)

3) Radiation: radiation occurs when a source emits electromagnetic radiation, which carries energy through space and materials. Therefore, radiation can also occur in empty space.

Therefore, the example described:

an energy source transfers heat directly to another object through space; an example would be an object becoming warm by sitting in the sunshine.

Is an example of heat transferred through radiation.

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.

dec 23, 2016 - a load of bricks weighing 680 n a distance of 10 m across a parking lot. if if the worker pushes the cart with a constant force of 209 n, what work= force x distance = 220 n x 10 m = 2200 n.m = 2200 j i don't know where the person got it from, but the initial part, work= force x distance me.