WorksheetsFirst Law of Thermodynamics
Total questions: 10
Worksheet time: 9mins
The study of how thermal energy is transformed into another types of energy is _________________________.
Thermodynamics
Power
Temperature
The mathematical equation of the first law of thermodynamics is __________________.
ΔU=W
ΔU=Q
ΔU=Q - W
The thermal energy entering the system from outside is called ________________.
Work
Heat
Power
To find the change in thermal energy, we need to use ____
ΔU = 𝑚𝐶∆𝑇
ΔU = ∆𝑇
ΔU = 𝐶∆𝑇
A kettle on fire receives 8000 J, the kettle kept shaking with 500 J work. Find the change in the kettle's thermal energy?
500 J
7500 J
8000 J
A saw used to cut a 1 Kg copper pipe, this caused 1°C raise in the pipe's temperature, how much work did the pipe receive from the saw? (Ccopper=385 J/(°C.Kg))
385 J
673 J
836 J
A saw used to cut a 1 Kg copper pipe, this caused 1°C raise in the pipe's temperature, how much work did the pipe receive from the saw? (Ccopper=385 J/(°C.Kg))
(a)
The descriptive equation of the first law of thermodynamics is __________________.
How hard is this topic?
Very easy
Easy
Hard
Very hard
Draw what happens in each step.
