The first to be credited with the idea that energy was quantized was
A) Max Planck.
B) Albert Einstein.
C) both Planck and Einstein at about the same time.
Answer: A
You might also like to view...
Which of the following unit equations is true?
A. N·C = V/m B. N·m = V·C C. N·V = N·m D. N/m = V/C E. N/V = m/C
Which of the following is another term for widget?
A. thingamabob B. gidget C. gadget D. sandbox
Express (2.2 × 106 )-1/2 in scientific notation
A) 6.7 × 10-4 B) 1.5 × 103 C) 1.5 × 10-5 D) 1.5 × 104
Two experimental runs are performed to determine the calorimetric properties of an alcohol that has a melting point of -10°C
In the first run, a 200-g cube of frozen alcohol, at the melting point, is added to 300 g of water at 20°C in a styrofoam container. When thermal equilibrium is reached, the alcohol-water solution is at a temperature of 5.0°C. In the second run, an identical cube of alcohol is added to 500 g of water at 20°C and the temperature at thermal equilibrium is 10°C. The specific heat of water is 4190 J/kg•K. Assume that no heat is exchanged with the styrofoam container and with the surroundings. The heat of fusion of the alcohol is closest to A) 5.5 × 104 J/kg B) 7.1 × 104 J/kg C) 7.9 × 104 J/kg D) 6.3 × 104 J/kg E) 8.7 × 104 J/kg