Wave Characteristics: A certain part of the electromagnetic spectrum ranges from 200 nm to 400 nm. What is the highest frequency associated with this portion of the spectrum? (c = 3.00 × 108 m/s)
A. 1.50 × 1014 Hz
B. 7.50 × 1013 Hz
C. 7.50 × 1014 Hz
D. 7.50 × 1015 Hz
E. 1.50 × 1015 Hz
Answer: E
You might also like to view...
You observe two stars that are identical to our Sun, but that are located at di?erent distances from Earth. Which star is the most luminous?
A) They are both the same luminosity. B) The one that appears brightest in our sky is more luminous. C) The one that appears faintest in our sky is more luminous. D) There is no way to tell from the information given.
By scattering alpha particles from gold, Rutherford showed the atomic nucleus to be very
A) small relative to the atom. B) massive relative to the mass of an electron. C) both of these D) neither of these
In the past, Earth has been hit by many asteroids, some very large. Suppose one such asteroid approached Earth so that when it was very far away it was traveling at 6500 m/s along a line that would miss the center of Earth by 8,500,000 m
Because of the gravitational attraction of Earth, it departed from this straight line and curved towards Earth, colliding with it. What was the speed of this asteroid when it hit Earth if we ignore the effect of the sun? The mass of Earth is 5.97 × 1024 kg, its radius is 6.38 × 106 m, and G = 6.67 × 10-11 N ? m2/kg2. A) 11400 m/s B) 12900 m/s C) 13700 m/s D) 15800 m/s E) 16400 m/s
In ?- decay, the number of protons in the nucleus is
A) decreased by 1. B) decreased by 2. C) increased by 1. D) increased by 2. E) remains unchanged.