Nebular theory predicts that other solar systems that formed in the same way should also have 8 planets
Indicate whether the statement is true or false
FALSE
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A 0.20-km wide river has a uniform flow speed of 3.0 m/s toward the east. A boat with a speed of 8.0 m/s relative to the water leaves the south bank and heads in such a way that it crosses to a point directly north of its departure point. How long does it take the boat to cross the river?
a. 29 s b. 23 s c. 25 s d. 27 s e. 17 s
How does the light-gathering power of a telescope affect the ability to see faint objects?
A. Faint objects are clearer (better resolved) if the telescope can gather a lot of light. B. Faint objects do not twinkle if the telescope can gather a lot of light. C. Faint objects are brighter if the telescope can gather a lot of light. D. Faint objects appear larger when viewed through a large-diameter telescope.
The safety fuse in an electric circuit is connected to the circuit in
A) series. B) parallel. C) either series or parallel.
A car traveling at constant speed
A. travels more distance in a second the longer the car travels. B. cannot be going uphill. C. can change direction. D. does not turn.