The correct answer among the choices given is option B. Equilibrium is achieved when the demand equals the supply. Equilibrium is a state when there are no changes observe in a phenomenon and for this case it is achieved when both values are the same.
Answer:
What is a Pure Substance?
Explanation:
It is something which cannot be divided into parts by physical means, as it's all made up of the same thing. Pure substances are either elements or compounds. Elements can NOT be separated into other types of matter (physically or chemically).
Answer:
See the explanation below
Explanation:
This happens because the coffee was at rest, at the time when the car accelerates to move forward the container containing the coffee also accelerates in the same direction, the liquid when moving suddenly spills. The same will happen if the car slows down, any sudden movement changes will cause the coffee to spill, understood by sudden movements when it accelerates or slows down.
A gas and liquid solution.
Answer:
1 second
Explanation:
Impluse is the product of force and time. Specifically the force over a time interval is know as impulse. From the second law of motion we get impulse being equal to the change in momentum.
u = Initial velocity = 2 m/s
v = Final velocity = 0
t = Time taken
F = Force applied = 4 N
Time the force has to be applied is 1 second.