In which of the following contexts can Gauss’s law not be readily applied to find the electric field?
1.near a long, uniformly charged wire
2.above a large, uniformly charged plane
3.inside a uniformly charged ball
4.outside a uniformly charged sphere
5.Gauss’s law can be readily applied to find the electric field in all these contexts.
5
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Star clusters are important to the study the stellar evolution because stars in a given cluster have the same
a. temperature. b. mass. c. age. d. luminosity.
The rotation curve of a galaxy is displayed as a plot of
a) gravity vs. distance to galaxy center b) rotation velocity vs. distance from Earth c) period of rotation vs. distance from Earth d) redshift vs. blueshift e) rotation velocity vs. distance to galaxy center
A strobe photograph of a car moving along a straight road shows the interval between each successive image to be diminishing. If the direction of motion of the car is taken as positive, which of the following is/are negative?
a. the speed of the car b. the average velocity of the car c. the average acceleration of the car d. all of the above
Heat will flow spontaneously from a cold object to a hot object
Indicate whether the statement is true or false