JAMB Physics 2017 Objective — Question 1
Question 1 of 40 from the Joint Admissions and Matriculation Board (JAMB) Physics 2017 Objective paper, with the correct answer and a full explanation.
Advertisement
A waterfall is 42m high. Calculate the difference in temperature of the water between the top and bottom of the waterfall, assuming no heat is lost. [specific heat capacity of water = 4.20x10³ Jkg⁻¹K⁻¹, g=10ms⁻²]
- A. A. 1.0°C
- B. B. 42.0°C
- C. C. 4.2°C
- D. D. 0.1°CCorrect
Explanation
Potential energy converts to heat energy: mgh = mcΔθ, so Δθ = gh/c = (10x42)/4200 = 0.1°C.
Advertisement
Sign up free to unlock
- Score tracking
- Practice history
- Saved questions
- Progress dashboard
- Personalized sessions
- Weak-topic breakdown
…and/or go further with premium services and No Ads.