Answer:
answer is 1000 N
formula used-
<em><u>F= m x (v-u/t)</u></em>
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<span>Supercooling
is lowering the temperature of liquid below its freezing point. This is also
known as the cooling of liquid. Supercooling can be minimized by cooling the
liquid and steering the liquid fast while it is freezing. Freezers in the
refrigerators shows the example activity of supercooling.</span>
Answer:
Absence of light causes shadow
Explanation:
The shadow is of the black colour because it is formed by the white light from the sun. Black is the opposite colour of white. In case you use different colour of light to cast a shadow you will get a shadow of opposite colour of light used to cast shadow.
Answer:
3%
Explanation:
The total energy ingested is 3000J and of those 3000J, 100J are used for growth and reproduction, this is the part of production in the porcupine, since the other 800J and 2100J are used for internal processes of the porcupine.
Therefore the production efficiency is 100J of the 3000J, let's find out how much it is in percentage:

⇒0.033=3.3% ≈ 3%
The correct option es 3% of production efficiency.