For the circuit in the figure below, is the instantaneous voltage of the source is equal to
2
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A physicist and a chemist are playing tug-of-war. For a certain length of time during the game, the participants are essentially at rest. During this time, each person pulls on the rope (which can be treated as an ideal string) with a force of 350 N. What is the tension on the rope?
A. 700 N B. 350 N C. 175 N D. Other (specify)
The Earth's orbital eccentricity does not play a major role in our seasons, for perihelion occurs in January. Is this true on Mars also?
What will be an ideal response?
James and John dive from an overhang into the lake below. James simply drops straight down from the edge. John takes a running start and jumps with an initial horizontal velocity of 25 m/s. When they reach the lake below,
A) the splashdown speed of James is larger than that of John. B) the splashdown speed of John is larger than that of James. C) they will both have the same splashdown speed. D) the splashdown speed of James will always be 9.8 m/s larger than that of John. E) the splashdown speed of John will always be 25 m/s larger than that of John.
The actual depth of a shallow pool 1.00 m deep is not the same as the apparent depth seen when you look straight down at the pool from above. How deep (in cm) will it appear to be? (nwater = 1.33.)
a. 133 b. 75.2 c. 90.6 d. 117 e. 100