Radiation pressure: If the average intensity of the sunlight in Miami, Florida, is 1060 W/m2, what is the average magnitude of the force this light exerts on a 16-m2 surface of black asphalt that totally absorbs the light? (c = 3.00 × 108 m/s)
A. 7.83 × 10-5 N
B. 1.63 × 10-5 N/m2
C. 2.61 × 10-5 N
D. 5.65 × 10-5 N
E. 0.204 × 10-5 N
Answer: D
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The four fundamental forces in the Universe are the ___ forces
a. strong, weak, electrical, and magnetic b. electromagnetic, gravitational, nuclear, and weak c. electromagnetic, gravitational, strong, and weak d. magnetic, electroweak, gravitational, and strong e. electromagnetic, unified, strong, and weak
Exhibit 18-1The figure below shows wave crests after a stone is thrown into a pond.
Use this exhibit to answer the following question(s).
Refer to Exhibit 18-1. The phase difference in radians between points A and B is
A.
B.
.C.
.D.
E.
.Consider two pipes of the same length: one pipe is open at both ends and the other pipe is closed on one end but open at the other end
If the fundamental frequency of the totally open pipe is 300 Hz, what is the fundamental frequency of the other pipe? A) 150 Hz B) 300 Hz C) 450 Hz D) 600 Hz
Wave Characteristics: A radar receiver indicates that a pulse return as an echo in 20 ?s after it was sent. How far away is the reflecting object? (c = 3.0 × 108 m/s)
A. 1.5 km B. 3.0 km C. 6.0 km D. 9.0 km