A charge of 12 C passes through an electroplating apparatus in 2.0 min. What is the average current through the apparatus?
A) 0.10 A
B) 0.60 A
C) 1.0 A
D) 6.0 A
A
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Ideal Gas Law: Your lungs hold 4.2 L of air at a temperature of 27°C and a pressure of 101.3 kPa. How many moles of air do your lungs hold? (R = 8.31 J/mol ? K)
A. 0.15 moles B. 0.17 moles C. 0.19 moles D. 0.21 moles E. 0.23 moles
In any collision
A. total momentum is not conserved. B. total kinetic energy is conserved. C. total momentum is conserved. D. total momentum is not conserved but total kinetic energy is conserved. E. total momentum and total kinetic energy are conserved and the masses are equal.
A thermos bottle works well because:
A. its glass walls are thin B. silvering reduces convection C. vacuum reduces heat radiation D. silver coating is a poor heat conductor E. none of the above
Jupiter's center appears to have a rocky core. In this context, the term rocky core refers to:
A) the number of light-weight elements in Jupiter. B) Jupiter's temperature. C) Jupiter's chemical composition. D) the properties of the material present in Jupiter.