0.795m
0.625m
0.335m
0.125m
Correct answer is A
n = 200, S = 132 rev/min, v = 350m/s\(^2\)
| f | = | ns | = | 200 | × | 132 | rev
min |
× | 1min
60s |
= | 440Hz |
| λ | = | v
f |
= | 350
440 |
= | 0.795m |
A mixture of blue and red pigment when illuminated by white light will appear
green
orange
yellow
magenta
Correct answer is D
Mixing blue and red pigments in equal amount gives magenta when illuminated by white light
gets hotter
increase is mass
decreases in mass
changes to steam
Correct answer is D
Boiling indicates changes from Liquid to gas.
The lead-acid accumulator consists of
lead as the positive electrode
lead acid as the negative electrode
hydrochloric acid as the electrolyte
tetraoxosulphate (vi) acid as the electrolyte
Correct answer is D
- the positive pole is lead peroxide (PbO\(_2\))
- the negative pole is head
- the electrolyte is H\(_2\)SO\(_4\)
\(300^0C\)
\(200^0C\)
\(100^0C\)
\(-100^0C\)
Correct answer is D
L\(_1\) = 100cm, T\(_1\) = 200°C
L\(_2\) = 99.4cm, T\(_2\) = ?
α 2 × 10\(^{-5}\) C\(^{-1}\)