Two coherent sound waves will destructively interfere when the path difference is the wavelength times what?
A) half an even integer
B) an integer
C) half an odd integer
D) an odd integer
C
Physics & Space Science
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How do you determine if a particular torque should be considered + (positive) or – (negative)?
Physics & Space Science
When polyethylene is melted, the only bonds that are broken are the weak ______________ bonds between the long-chain molecules.
Fill in the blank(s) with the appropriate word(s).
Physics & Space Science
What is the ground-state valence-shell electron configuration of the group of elements indicated by the shaded portion of the periodic table?
A)ns2
B)ns2np2
C)ns2(n-1)d2
D)ns2(n-2)f2
Physics & Space Science
A heater is rated at 1200 watts for a 120-volt source.If two heaters are connected in parallel across the 120-volt source, the current in amperes drawn from the source is
a. 5 b. 10. c. 20 d. none of the above.
Physics & Space Science