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.
N0.65
N0.13
N3.90
N39.00
N234.00
Correct answer is B
PT = (5 x 50) + (100 x 4)
= 650watts
Energy(kWhr) = 650 x 10-3 x 10
= 6.5 kWhr
1kWhr cost 2 kobo ; 6.5 kWhr will cost \(\frac{2 \times 6.5}{1}\)
= 13 kobo
2.0 x 102Jkg-1k-1
2.0 x 102Jkg-1
4.0 x 104Jkg-1k-1
4.0 x 104kg-1
8.4 x 103Jkg-1k-1
Correct answer is C
Heat energy = Electrical energy
mc\(\theta\) = power x time
5 x 1 x 10-2 x C = 100 x 20
C = 4.0 x 104Jkg-1k-1
2.0Hz
7.0Hz
8.8Hz
14.0Hz
17.6Hz
Correct answer is B
W = \(\frac{v}{r}\)
= \(\frac{0.88}{0.02}\) = 44 rad/s
2\(\pi\)F = W = 44
F = \(\frac{44}{2 \times 3.142}\)
= 7Hz
i and ii
ii and iii
iii and iv
ii and iv only
i,ii and iii
Correct answer is D
No explanation has been provided for this answer.
i only
ii only
iii only
i and ii
i and iii
Correct answer is E
No explanation has been provided for this answer.