When electromagnetic radiation is destroyed it is said to be
A) refracted
B) absorbed
C) reflected
D) emitted
B
Physics & Space Science
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An alpha particle is:
a. any positively charged nucleus. c. a neutral helium atom. b. an X-ray. d. None of these choices.
Physics & Space Science
Suppose that two quantities, A and B, have different dimensions. Determine which of the following arithmetic operations could be physically meaningful
(i) A + B (ii) A/B (iii) B - A (iv) AB
1.(iv) only 2.(ii) only 3.(i) and (iii) 4.(ii) and (iv)
Physics & Space Science
A long thin rod of length L has a linear density ?(x) = Ax where x is the distance from the left end of the rod
(a) How far is the center of mass of the rod from the left end of the rod? (b) What is the mass of the rod?
Physics & Space Science
If a nuclide has a half-life of 100 s, what is the corresponding mean lifetime?
A. 100 s B. 144 s C. 69 s D. 50 s E. 75 s
Physics & Space Science