2020 Paper Flashcards
1
Q
Is the positive the longer or shorter side of a cell
A
Longer
2
Q
Give a nucleur fuel
A
Uranium
3
Q
What is precision
A
When results have little variation
4
Q
Why do people have the have the same speeds at the bottom of a slide
A
0.5 x mass x velocity² = mass x g x h
Mass cancel out so speed only depends on gravitational field strength and height
In reality speed will vary due to different frictional forces eg: air resistance from type of clothing and surface area
5
Q
Explain why having a short half life is good
A
The activity will decreases quicker so the radioactive substance will be dangerous for a shorter amount of time
