A waterfall is 630cm high. What is the change in temperat...
A waterfall is 630cm high. What is the change in temperature of a quantity of water that falls from the top to the bottom of the waterfall? (Neglect heat losses to the surroundings, take g as 10 ms-2 and specific heat capacity of weather as 4200J kg-1K-1
0.15°C
1.50°C
15.00°C
21.00 °C
50.00°C
Correct answer is B
water height as 630cm, gravity = 10m/s\(^2\), specific heat capacity of weather as 4200J
Temperature change = \(\frac{gh}{c}\) = \(\frac{630*10}{4200}\)
= 1.5C
What part of the camera corresponds to the iris of the eye? ...
Which of the following correctly explains why soft iron is prefered to steel in electromagnets? i...
Short sightedness can be corrected by what type of lens? ...
The capacitance of a parallel-plate capacitor is increased by making the area of the plates ...