The Earth is 1.49 1011 m from the Sun. If the solar radiation at the top of the Earth's atmosphere is 1340 W/m2, what is the total power output of the Sun?
a. 2.34 1030 W
c. 6.62 1026 W
b. 3.74 1026 W
d. 7.48 1027 W
Question 2
A flute behaves like a tube open at both ends. If its length is 70.0 cm, and the speed of sound is 340 m/s, what is its fundamental frequency in Hz?
a. 121 Hz
c. 243 Hz
b. 159 Hz
d. 260 Hz