When we speak of time dilation, we mean that time

A) compresses with speed.
B) stretches with speed.
C) is constant at all speeds.


Answer: B

Physics & Space Science

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Compared to our Sun, a typical white dwarf has:

A) about the same mass and density. B) about the same mass and a million times higher density. C) a larger mass and a 100 times lower density. D) a smaller mass and half the density. E) a smaller mass and twice the density.

Physics & Space Science

The buoyant force that keeps a ship afloat is an example of Pascal's principle

a. True b. False Indicate whether the statement is true or false

Physics & Space Science

According to the quantum mechanical model of the hydrogen atom, if the principal quantum number is n, how many different orbital angular momentum quantum numbers are permitted?

A) n/2 B) 2n C) n D) 3n E) 4n

Physics & Space Science

Which has a greater value, a newton of gold won on Earth or a newton of gold won on the Moon?

1.the newton of gold on the Earth 2.the newton of gold on the moon 3.The value is the same, regardless.

Physics & Space Science