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a) Tpool is less than Tcup, and the U is the same.

b) Tpool is equal to Tcup, and Upool is less than Ucup.

c) Tpool is equal to Tcup, and Upool is greater than Ucup.

d) Tpool is greater than Tcup, and the U is the same.

A 5 kW heater is used to heat water. How long will it take to heat 20 kg of water from 20 degrees celsius to 100 degrees celsius?

a) 32 minutes

b) 2 minutes

c) 12 minutes

d) 22 minutes

any help would be appreciated, thanks!