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Juliette [100K]
3 years ago
5

A 50 W engine generates 50 J of energy. How long did it run for?

Chemistry
2 answers:
Ivanshal [37]3 years ago
7 0

Answer:  A  Explanation:

Inessa [10]3 years ago
6 0
The engine ran for 10 second
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An increase in which of the following would increase the boiling point of a<br> liquid?
Doss [256]

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3 years ago
A 2.40 kg block of ice is heated with 5820 J of heat. The specific heat of water is 4.18 J•g^-1•C^-1. By how much will it’s temp
MrMuchimi

Answer: The temperature rise is 0.53^0C

Explanation:

The quantity of heat required to raise the temperature of a substance by one degree Celsius is called the specific heat capacity.

Q=m\times c\times \Delta T

Q = Heat absorbed by ice = 5280 J

m = mass of ice = 2.40 kg = 2400 g   (1kg=1000g)

c = heat capacity of water = 4.18J/g^0C

Initial temperature  = T_i

Final temperature = T_f  

Change in temperature ,\Delta T=T_f-T_i=?

Putting in the values, we get:

5280J=2400g\times 4.18J/g^0C\times \Delta T

\Delta T=0.53^0C

Thus the temperature rise is 0.53^0C

0 0
3 years ago
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