The development of physics since about 1900 is called
a. neoclassical physics.
b. Newtonian physics.
c. classical physics.
d. modern physics.
Question 2
How much electromagnetic energy is contained in each cubic meter near the Earth's surface if the intensity of sunlight under clear skies is 1000 W/m2?
a. 3.3 106 J
b. 3.3 J
c. 0.003 J
d. 104 J
e. 3.0 105 J