In organic molecules, a chlorine atom will normally form how many bonds?
a. 2
b. 3
c. 4
d. 1
e. 0
d
Physics & Space Science
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If the spectrum of a sunspot shows that it has a maximum intensity at 650 nm, what is the temperature of the sunspot?
a. 650 K b. 5000 K c. 1950 K d. 4600 K e. 10,000 K
Physics & Space Science
A conducting bar moves as shown near a long wire carrying a constant 80-A current. If a = 1.0 mm, b = 20 mm, and v = 5.0 m/s, what is the potential difference, Va?Vb?
A. ?0.24 mV B. +0.24 mV C. ?0.19 mV D. +0.19 mV E. ?0.76 mV
Physics & Space Science
Why does the average chemical composition of stars now forming differ from that of older stars?
What will be an ideal response?
Physics & Space Science
During the 1960s and 1970s, scientists designed a spacecraft based on nuclear propulsion, but it was never built
Indicate whether the statement is true or false
Physics & Space Science