An astronaut traveling with a speed v = 0.90 c holds a meterstick in his hand. If he measures its length, he will obtain a value of

a. 1.0 m
b. 2.3 m
c. 0.19 m
d. 0.43 m
e. 0.81 m


a

Physics & Space Science

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Imagine that we have two identical metal spheres on insulating stands that we give the same negative charge. If we slowly bring the spheres closer and closer together, the charge per unit area ? on each sphere will at the point nearest the other sphere

A. become increasingly negative. B. become less negative. C. remain constant.

Physics & Space Science

Consider the fictional case of the incredible shrinking woman. If a fictional shrinking woman shrinks to 0.1 her original height, her total skin area shrinks to

A) 0.1 times its original value. B) 0.01 times its original value. C) 0.001 times its original value. D) 0.0001 times its original value. E) none of the above

Physics & Space Science

Of vectors with lengths 5 m, 3 m, and 4 m, which has the greatest magnitude x component?

a. the one with length 5 m b. the one with length 3 m c. the one with length 4 m d. It could be any of the three.

Physics & Space Science

Sort the following steps into the correct sequence in which life evolved on Earth.

What will be an ideal response?

Physics & Space Science