A3-kg object experiences a temperature rise of 50°c when 1000 joules of heat are added. using the same substance, which situation would require the same amount of heat to be added? a) a 6-kg mass experiences a temperature rise of 50°c. b) a 3-kg mass experiences a temperature rise of 50°c. c) a 6-kg mass experiences a temperature rise of 100°c. d) a 3-kg mass experiences a temperature rise of 100°c.

B) A 3-kg mass experiences a temperature rise of 50°C.

Explanation:

As we know that the rise in temperature for 3 kg object is 50 degree C then the heat added is given as 1000 J

so here we can say that formula of heat is

here we will have

s = specific heat capacity

= temperature rise

so here if we make all three parameters same to make this heat energy same

so correct answer will be

B) A 3-kg mass experiences a temperature rise of 50°C.

a

explanation:

no diagram was provided, but i'm guessing it's the one i've attached to my answer.

here, a mechanical force turns the rod.   this generates an electric current in the coil, which powers the bulb.

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.