Physics Questions and Answers
If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.
If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.
4.00 V
2.20 V
0.15 V
8.00 V
Correct answer is B
Lost voltage = I x R
= 4 x 0.55
= 2.2V
formation of hydrogen bubbles on the electrode
increase in the resistance of the cell
local action
polarization
Correct answer is C
If the zinc used in the simple cell is of the impure commercial variety bubbles of hydrogen will be seen coming off the zinc. This is called local action
\(\gamma\) = \(\alpha ^{-3}\)
\(\gamma\) = \(\alpha\)
3\(\alpha\)
\(\gamma\) = \(\alpha ^{3}\)
Correct answer is C
volumetric expansion (γ) = 3x Linear expansion
3.20 ms\(^{-2}\)
0.25 ms\(^{-2}\)
0.80 ms\(^{-2}\)
4.00 ms\(^{-2}\)
Correct answer is C
S = ut + \(\frac{1}{2}\)at\(^2\)
40 = 0 x 10 + \(\frac{1}{2}\)a x 10\(^2\)
50a = 40
a = \(\frac{40}{50}\)
= 0.8m/s\(^2\)
increase weight of tyres
increase friction
increase its longevity
look good
Correct answer is B
Tire treads provide your tires the ability to grip the road safely enhancing proper traction.
Helps your vehicle to be able to accelerate smoothly and as well to be able to brake more quickly.