Question Library

The resultant, R is given by pythagoras rule, R2 = P2 + Q2 = 62 + 82 = 36 + 64 = 100 R = √100 = 10.0N

Under neutral equilibrium, the body rolls and the position of the center of gravity , C. G is neither raised nor lowered

Electric potential is work done in taking a unit mass or charge from infinity to that point V = \(\frac{\text{W}}{\text{Q}}\) = \(\frac{\text{Fr}}{\text{Q}}\) = \(\frac{Q_1Q_2}{4\piεor^2}\) x \(\frac{\text{r}}{Q_1}\) = \(\frac{- q}{4\piεor}\)

m = v/u = -3 v = -3u f = 15cm 1/v + 1/U = 1/f 1/-3U + 1/u = 1/15 2/3u = 1/15 3U = 15 x 2 U = 30/3 = 10 cm

f1 = 225Hz, T1 = 225N f2 = ? T2 = 324N But f ∝ \sqrtT => f = K\sqrtT => K = f/\sqrtT ∴ f1/\sqrtT1 = f2/\sqrtT2 225/\sqrt225 = f2/\sqrt324 f2 = 225\sqrt324 \sqrt225 f2 = 270Hz

I = \(\frac{V}{R}\) from Ohm's law I = \(\frac{12}{12}\) = 1A.

According to the writer, it is possible to be in charge of your thoughts by shutting down evil thoughts whenever it creeps into the mind.

Evil thoughts control the minds of people who open their doors to it or those who constantly imagine and meditate on it.

This suggest that, if we give more importance to evil thoughts, we will eventually act on them.

According to the last paragraph, our every day thoughts and imaginations needs to be watched and controlled so we dnt start acting on them.

No expanded working has been attached for this question yet. The verified answer is Option D.

Ineffectual; not producing any significant or desired effect.

Biocell will use materials that would otherwise be considered a waste. This means less spending

The correct answer is “fish.” The passage clearly states that man experienced the strange ‘shock’ produced by some fish even before electricity was really discovered. This indicates that the earliest awareness or “discovery” of electricity came from observing electric fish.

Fast-paced; moving or developing very quickly.