Yello light on a red object, the object appears what color ?

Answers

Answer 1

Answer:
In order to understand what happens, let's consider for a moment why
it's called a "red object" to begin with. The reason it's called "red" is that
whenever the light shining on it contains any red light, the object absorbs
light of any other colors, and only red light remains to bounce off of it toward
your eyes. Since most light contains plenty of red ... such as sunlight or the
light from an electric bulb ... the object usually looks red when you see it.

In the rare event when the light illuminating it has no red in it ... such as the
situation you describe in your question ... no light remains to bounce off of
the object to your eyes, since the object absorbs any light that's not red.

When that happens, the object appears black.

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The heating of the lower layer of the atmosphere from radiation absorbed by certain heat- absorbing gasses is called ?

Answers

I think you're talking about the 'greenhouse effect'.

F=ma make m the subject

Answers

Answer:

M=f/a

Explanation:

F=m x a

÷a both sides

F÷a = m

M=f/a

A wave will "break" because ________. a wave will "break" because ________. the sediment load of water is greater near the shore of random molecular motion in wave forms the density of water increases closer to shore the bottom interferes with its oscillatory motion the wind increases its speed near shorelines

Answers

A wave will "break" because the bottom interferes with its oscillatory motion. Breaking of waves may occur anywhere that the amplitude is sufficient, including in mid-ocean. When waves enter shallow water they break because the motion of water in lower part of the wave nearest the bottom is slowed by friction so that their oscillation is faster than its supporting portion at the bottom. Thus, the wave collapses forward and breaks.

Final answer:

A wave breaks due to the interference of the ocean floor with its oscillatory motion. As the wave nears the shore and the water gets shallower, the bottom of the wave slows down while the top continues its original speed, causing the wave to break.

Explanation:

A wave will 'break' or crash due to its interaction with the ocean floor as it approaches the shore. Waves follow an oscillatory motion, moving in an up-down pattern. When a wave gets closer to shore, the water becomes shallower which interferes with the oscillatory motion of the wave. The bottom of the wave slows down upon hitting the ocean floor while the top of the wave continues its original speed. This causes the wave to become steep and eventually break, forming the crashing wave front we often see on beaches.

Learn more about Wave breaking here:

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A single polarizer will stop _____ of the incoming light. less than 50% 50% more than 50% but less than 100% 100%

Answers

So we want to know how much light will a single polarizer stop. Since the polarizer intensity formula is I=I0cos^2(a), where I is the intensity, I0 is the initial intensity and a is the angle of the light's initial polarization direction and the axis of the polarizer. Also, the average of cos^2a is 1/2 so I=(1/12)*I0. and I/I0=1/2 or 50%. So the light that passes trough one polarizer has 50% of the initial intensity. And the correct answer is 50%.

The answer is 50%. Remember, it's a single polarizer, not two of them.

Air is made of 80% nitrogen and 20% oxygen by volume. The densities of air and oxygen is 1.29kgm^-3 and 1.43kgm^-3 respectively. What is the density of nitrogen? Please specify your soultion,thank you!

Answers

Volume % = mole %

Molar mass of oxygen = 32kg/kmol

Molar mass of nitrogen = 28 kg/kmol

Density of nitrogen = Density of oxygen x molar mass of oxygen x molar ratio of air x molar mass of nitrogen

Density of nitrogen = (1.43kgm^-3)(1 kmol O2/32 kg O2)(80 kmol N2/ 20 kmol O2)(28 kg N2/1 kmol O2) = 5.01 kg/m3

In which state of matter is a substance unable to transfer heat by convection

Answers

Convection is the movement of molecules in a solution according to the kinetic energy imparted by heat energy. This happens in liquids, gases, and plasmas. It can't occur in solids simply because they are just that. Solids. If the solid is heated enough to break the cohesion then it will turn to a liquid. Hope this helped. :)

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