by Sunday | Aug 28 | Physics WAEC
A ball of mass 0.1kg approaching a tennis player with a velocity of 10ms−¹, is hit back in the opposite direction with a velocity of 15ms−¹. If the time of impact between the racket and the ball is 0.01s, calculate the magnitude of the force with which the ball is hit...
by Sunday | Aug 28 | Physics WAEC
A. 0.8rads−¹ B. 2 rads−¹ C. 4 rads−¹ D. 8 rads−¹ E. 16 rads−¹ Correct Answer: Option C – 4 rads−¹ Explanation V=rw, 8=2w, w=8/2= 4rad/s−¹
by Sunday | Aug 28 | Physics WAEC
A. 17.3ms−² B. 20ms−² C. 24.5ms−² D. 125ms−² E. 200ms−² Correct Answer: Option B = 20ms−² Explanation v²=u²+2as = 0+2×(25−5) v²=0+20×20=400; v = √400 =20ms−²
by Sunday | Aug 28 | Physics WAEC
A. De Broglie’s law B. Heisenberg’s uncertainty principle C. Compton effect D. Frank-Hertz experimental law E. Wave-particle paradox Correct Answer: Option B – Heisenberg’s uncertainty principle
by Sunday | Aug 28 | Physics WAEC
Two radioactive elements X and Y have half-lives of 100 and 50 years respectively. Samples of X and Y initially contain equal number of atoms. What is the ratio of the number of the remaining atoms of X to that of Y after 200 years? A. 4:1 B. 3:1 C. 1:1 D. 1:2 E. 1:4...
Land Law and the Consequences of Unauthorized Land Transfers in Nigeria
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