How can an apple appear red under white or red light but black under blue light?

1 answer:

8 0

Under blue light, an apple will appear black because it absorbs the blue light and has no red light to reflect. In contrast, if magenta light is shined on the apple, it will appear red because magenta light is comprised of red and blue light. The blue light will still be absorbed, but the red will be reflected.

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The small and large pistons of a hydraulic press

Vsevolod [243]

Answer:

1600 N

Explanation:

pascals principle says..

$\frac{A_{out}}{A_{in}} = \frac{F_{out}}{F_{in}} \\$

so lets do

$\frac{2}{4} = \frac{x}{3200}$

so multiply one half (2/4 simplified) by 3200

1600 is equal to x

1600 N

YAAAAAAAAAAAAAAY

6 0

3 years ago

average speed = distance covered divided by travel time. do some algebra and multiply both sides of this relation by travel time

mars1129 [50]

Based on the scenario,
The thing that the result say about distance covered is :
it tells you that the distance covered is equal to the average speed times the travel time

hope this helps

6 0

4 years ago

How much water to add to 80 lb bag of concrete?

irina [24]

Im not conpletely sure but 6pt or about 2.7-2.8 L of water

6 0

4 years ago

Label the layers of the Earth in order from youngest to oldest according to the law of superposition.

zaharov [31]

Answer:

With the increase in depth, age of layer increases.

Explanation:

According to the law of superposition, the layer of the Earth that is present in the deep is considered as the oldest layer while on the other hand, those layer which is present on the top of all layers is considered as youngest layer of earth. When we move from the top layer towards the bottom layer, the age of layer increases or in other words, when we move upward the age of the layer decreases so label the layers of earth on the basis of this phenomenon.

4 0

3 years ago

If you were on earth monitoring a person in a rocket ship traveling away from the earth at a speed close to the speed of light,

m_a_m_a [10]

Answer:

There wiil be a reduction in pulse and volume will be reduced

Explanation:

This is due to the relastivistic Doppler effect

6 0

4 years ago