Question

group of students performed an experiment to prove the law of conservation of energy. In the experiment, a flask containing water at room temperature was shaken vigorously for a few minutes. The table shows a partial record of the temperature of the water before and after shaking.


Experimental Record
Temperature
Before Shaking 20 °C
After Shaking Unknown


What best predicts the unknown temperature?

1- Less than 20 °C because the total energy of the system after shaking is lower
2- Greater than 20 °C because the total energy of the system after shaking is higher
3- Less than 20 °C, because the mechanical energy from shaking transforms to thermal energy
4 - Greater than 20 °C, because the mechanical energy from shaking transforms to thermal energy

Answer 1

I think it's 2

Answer 2

Me too

Answer 3

nope, 2 says increasing energy. thats not true because that would just be creating more energy. they are turning mechanical energy (shaking the flask) into thermal energy. there is no increasing of energy, only changing forms.

Answer 4

oh okay let me read it again

Answer 5

I think it's 1 or 4

Answer 6

well it would still be increasing in temperature. so which one is increasing in temperature, but explains the transformation of mechanical energy to thermal energy?

Answer 7

maybe 4

Answer 8

yes great job <33

Answer 9

Thx

Answer 10

np :]