Answer:
Q = 62383.44 Joules
Explanation:
Given that,
Mass of water, m = 710 gm
Initial temperature of water, 
Final temperature of water, 
The specific heat capacity of liquid water is, 
Heat transferred is given by :


Q = 62383.44 Joules
So, the amount of heat transferred is 62383.44 Joules. Hence, this is the required solution.
Closed
Explanation:
A physical system that is isolated from its environment is said to be a closed system.
In a closed system, energy can be exchange but matter cannot be exchanged.
- A closed system sightly permits the only certain types of exchange.
- These systems are usually used to control and limit the impact of the environment on a system.
- Experiments can be conducted on the premises of any the interactions.
Learn more:
Momentum of an isolated system brainly.com/question/7973509
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Answer:
180 W
Explanation:
The work done by the man against gravity is equal to its gain in gravitational potential energy:

where
(mg) = 720 N is the weight of the man
is the change in height
Substituting,

The power he must deliver is given by

where
W = 3600 J
t = 20 s is the time taken
Substituting,

C volume because the volume take up the Mater and space around it thing