On his honeymoon, James Joule attempted to explore the relationships between various forms of energy by measuring the rise of temperature of water which had fallen down a waterfall on Mount Blanc.
What maximum temperature rise would one expect for a waterfall with a vertical drop of 20 m? The specific heat of water is 4186 J/kg K.
A) 0.047 C B) 0.064 C C) 0.053 C D) 0.071 C
Question 2
A 3.0-cm tall statue is 48 cm in front of a convex lens having a focal length of magnitude 20 cm.
(a) Is the image of the statue real or virtual?
(b) How far is the image from the lens?
(c) Is the image upright or inverted?
(d) How tall is the image?