As water drops fall at a steady rate from a leaking faucet they

A) get closer together.
B) get farther apart.
C) remain at a relatively fixed distance from one another.


Answer: B

Physics & Space Science

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First Law of Thermodynamics: In an isochoric process, the internal (thermal) energy of a gas decreases by 50 J. How much work is done by the gas during this process?

A. 0 J B. 50 J C. -50 J D. 25 J E. -25 J

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Mort stands on Earth. Velma moves away from him in a rocket, at 299,000 km/s (1000 km/s slower than lightspeed). Mort sends a laser beam toward Velma. As the tip of the beam passes her rocket, Velma observes that

A) the laser beam moves past her at just 1000 km/s. B) the laser beam moves past her at 300,000 km/s. C) Both of the above. D) the laser beam never catches up with her. E) Mort has turned into a giant frog.

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Two infinite parallel surfaces carry uniform charge densities of 0.20 nC/m2 and ?0.60 nC/m2 . What is the magnitude of the electric field at a point between the two surfaces?

a. 34 N/C b. 23 N/C c. 45 N/C d. 17 N/C e. 90 N/C

Physics & Space Science

Compare the approximate value for the convective heat transfer coefficient from Equation 10-54 or 10-55 for water boiling on vertical flat surfaces at atmospheric pressure and superheat temperature of 40ºF to the value predicted by using Equation 10-6.

Physics & Space Science