The distance between the fixed points of a mercury-in-glass thermometer is 30 cm. Determine the temperature when the mercury level is 10.5 cm above the lower fixed point
A. 28.6ºC B. 30.0 ºC C. 35.0 ºC D. 40.5 ºC Correct Answer: Option C = 35.0 ºC
A hunter fires a gun at a point 408 m away from a cliff. If he hears an echo 2.4 s later; determine the speed of the sound wave
A. 340 ms−1 B. 380 m s−1 C. 400 m s −1 D. 680 m s−1 Correct Answer: Option A – 340 ms−1 Explanation speed of the sound wave = distance ∗ 2/time = 408∗2/2.4 : speed of the sound wave = 340...
When the direction of vibration of the particles of a medium is perpendicular to the direction of propagation of a wave; the wave is said to be?
A. longitudinal B. transverse C. mechanical D. a sound wave Correct Answer: Option B – transverse Explanation In physics, a transverse wave is a wave whose oscillations are perpendicular to the direction of the wave’s advance. This is in contrast to a...
The half-life of a radioactive substance is 15 hours. If at some instance, the sample has a mass of 512 g, calculate the time it will take 78 of the sample to decay
A. 15 hours B. 30 hours C. 45 hours D. 60 hours Correct Answer: Option C – 45 hoursProducts
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Land Law and the Consequences of Unauthorized Land Transfers in Nigeria
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Co-Ownership Structures and Land Acquisition Methods in Nigeria
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Rights in Community Land and Fundamental Land Concepts in Nigeria
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Customary Land Control and the Origins of Nigeria's Land Use Act
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Land Ownership Principles and Transaction Laws in Nigeria
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