Physics, 14.06.2021 23:50 Welcomes

1) A mass of 60kg of water is heated by 80oC. How much energy is required to do this? Water has a specific heat capacity of 4200 J/kg°C.

2) Aluminium has a specific heat capacity of 900 J/kg°C and water has a specific
heat capacity of 4200 J/kg°C. Based on these figures, which of the following
statements is true?

a) Water will turn to steam more easily than aluminium metal will melt.

b) 1kg of aluminium will take much longer to change its temperature than water

c) Aluminium is much more suitable for use in car radiators than water

d) 1kg of water needs to receive much more energy than 1kg of aluminium to change its temperature by 1°C

Answers: 2

Show answers

Another question on Physics

Physics, 21.06.2019 17:20

Your 249 ml cup of coffee is too hot to drink when served at 82 degree celsius. what is the mass of an ice cube taken from a -21 degree celsius freezer, that will cool your coffee to a pleasant 54 degree celsius. specific heat of the water is 4190 j/kg c, specific heat of ice is 2090 j/kg c, heat of fusion of ice is 3.33 x 10^5 j/kg

Answers: 3

Answer

Physics, 22.06.2019 05:00

When does your body conduct current more readily?

Answers: 1

Answer

Physics, 22.06.2019 05:50

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.

Answers: 2

Answer

Physics, 22.06.2019 11:00

Need this now! do pilots live long

Answers: 1

Answer

You know the right answer?

1) A mass of 60kg of water is heated by 80oC. How much energy is required to do this? Water has a s...

Questions