Which of the following numbers has 4 significant figures; which has 5 significant figures? (a) 3001 (b) 0.00370 (c) 4774.00 (d) 29.290
What will be an ideal response?
(a) has 4 significant figures; (d) has 5 significant figures
Physics & Space Science
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Power: The resistivity of gold is 2.44 × 10-8 ? ? m at a temperature of 20°C. A gold wire, 1.8 mm in diameter and 14 cm long, carries a current of 480 mA. What power is dissipated in this wire at 20°C?
A. 0.31 mW B. 0.077 mW C. 0.14 mW D. 0.19 mW E. 0.25 mW
Physics & Space Science
An increase of 20 dB increases the sound intensity by a factor of
a. 10. b. 200. c. 100. d. 20.
Physics & Space Science
In what region of the solar system is Pluto found?
A) the asteroid belt B) the Kuiper belt C) the Oort cloud D) the terrestrial planet region
Physics & Space Science
Why do gamma ray telescopes have poor angular resolution?
What will be an ideal response?
Physics & Space Science