Of the various types of electromagnetic radiation, which is the most penetrating through all forms of matter?
a. infrared
b. gamma
c. visible light
d. ultraviolet
b
You might also like to view...
A string on a guitar is stretched between two points 30.0 cm apart with a tension of 100 N. The mass/length of the string is 0.003 kg/m. The wavelength of the mode of vibration with the lowest frequency is
A. 0.3 m. B. 0.4 m. C. 0.5 m. D. 0.6 m. E. 0.7 m.
What is a polymorph?
What will be an ideal response?
An ice skater spins at 3.5 rev/s with his arms are extended. He draws his arms in and spins at 8.3 rev/s. By what factor does his moment of inertia change in the process?
a. 2.4 c. 0.42 b. 0.58 d. 0.12
A radioactive isotope has a half-life of one month. At the end of one month, the amount of the original isotope still remaining is
1) none, 2) one-quarter, 3) one-half, 4) three-fourths, and at the end of two months, the amount of original isotope remaining is 5) none. 6) one-fourth. 7) one-half. 8) three-fourths.