Answer:
138.18 minutes
Explanation:
= Latent heat of water at 0°C = 80 cal/g
m = Mass of water = 570 g
Heat removed for freezing

Let N be the number of cycles and each cycle removes 56 cal from the freezer.
So,

Each cycle takes 10 seconds so the total time would be

The total time taken to freeze 138.18 minutes
<span>The relative hardness of a mineral
can be tested by the Moh’s scale or the mineral hardness. The Moh’s scale can
be characterized by the ability of the mineral to resist scratch resistance by
scratching a harder or softer mineral. It has a scale of 1 to 10 where 1 being
the softest and 10 being the hardest. The relative hardness of a mineral can
best be tested by scratching the mineral across a glass plate. The answer is
letter A. </span>
Answer:
c.
Explanation:
they are all almost correct.
c is the only fully correct option
A light-year is a unit of distance.
The definition of a light-year is the distance light travels in one year.
Answer: from the information given, the velocity of the water will decrease but the pipe size will remain the same.
This can be proved with bernoulli's equation.
Explanation: careful analysis of the system using bernoulli's equation of flow is shown in the image attached