Current: A charge of 12 C passes through an electroplating apparatus in 2.0 min. What is the average current in the apparatus?
A. 0.10 A
B. 0.60 A
C. 1.0 A
D. 6.0 A
Answer: A
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_________ are small luminous nebulae excited by nearby young stars
a. T Tauri stars b. Herbig-Haro objects c. O associations d. Bok Globule e. Giant molecular clouds
Thermodynamic Devices: A reversible engine takes in heat at a rate of 555 W and exhausts heat at 482 W.(a) How much power does it produce?(b) What is its efficiency?(c) If operated in reverse as a refrigerator, what would be its performance coefficient (COP)?
What will be an ideal response?
Star A has an apparent magnitude of 3, and Star B has an apparent magnitude of 5. Which star is brighter in our sky?
A) Star A B) Star B C) The two stars have the same brightness in our sky, but Star A is closer to us than Star B. D) There is not enough information to answer the question.
The exchange particles for the strong force are
A) neutrinos. B) photons. C) quarks. D) gluons. E) W+, W-, and Z.