Power: A 25-W soldering iron runs on 110 V dc. What is its resistance?
A. 0.0020 ?
B. 4.4 ?
C. 0.48 k?
D. 2.8 k?
Answer: C
Physics & Space Science
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There are _______ nanometers in one meter
a. 1 × 10^3 b. 1 × 10^?3 c. 1 × 10^9 d. 1 × 10^?9 e. 400
Physics & Space Science
Only neutrinos can go faster than the speed of light
Indicate whether the statement is true or false
Physics & Space Science
A Hooke's law spring is compressed 12.0 cm from equilibrium, and the potential energy stored is 36.0 J. What compression (as measured from equilibrium) would result in 100 J being stored in this case?
a. 20.0 cm c. 13.6 cm b. 14.1 cm d. The correct answer is not given.
Physics & Space Science
What electric charge is characteristic for an ion of F?
a. 7+ b. 0 c. 1– d. 1+
Physics & Space Science