An automatic coffee maker uses a resistive heating element to boil the 2.4 kg of water that was poured into it at 21 °c. the current delivered to the coffee pot is 8.5 a when it is plugged into a 120 v electrical outlet. if the specific heat capacity of water is 4186 j/kgc° , approximately how long does it take to boil all of the water?

Explanation:

The expression for the calculation of the enthalpy change of a process is shown below as:-

Where,  

is the enthalpy change

m is the mass

C is the specific heat capacity

is the temperature change

Thus, given that:-

Mass of water = 2.4 kg

Specific heat = 4.18 J/g°C

So,  

Heat Supplied

where

a.) is the correct answer.

explanation:

graphing motion: mastery test

209be

what is the instantaneous acceleration of

the particle at point b?

0 meters/second?

10 meters/second?

12 meters/second?

velocity imetersisecond

15 meters/second?

20

time (seconds)

answer: 0 meters/second^2