Waec Physics Questions
Question 531:
Which of the following is used in a nuclear reactor to slow down fast-moving neutrons?
View Answer & ExplanationQuestion 532:
Which of the following is used in a nuclear reactor to slow down fast-moving neutrons?
View Answer & ExplanationQuestion 533:
Which of the following particles/rays do not originate from the nucleus of an atom?
View Answer & ExplanationQuestion 534:
The count rate of an alpha-particle source is 400 per minute. If the half-life of the source is 5 days, what would be the count rate per minute after 15 days?
View Answer & ExplanationQuestion 535:
(a) Define the apparent cubic expansivity of a liquid
(b)(i) Describe with the aid of a labelled diagram, an experiment to determine the apparent cubic expansivity of a liquid.
(ii) State two precuations that should be taken to ensure accurate results.
(c) A density glass bottle contains 44.25g of a liquid at 0°C and 42.02g at 50°C. Calculate the real cubic expansivity of the liquid. (Linear expansivity of glass = 1.0 x 10-5K\(^{-1}\))
View Answer & Explanation(b)(i) Describe with the aid of a labelled diagram, an experiment to determine the apparent cubic expansivity of a liquid.
(ii) State two precuations that should be taken to ensure accurate results.
(c) A density glass bottle contains 44.25g of a liquid at 0°C and 42.02g at 50°C. Calculate the real cubic expansivity of the liquid. (Linear expansivity of glass = 1.0 x 10-5K\(^{-1}\))