According to the uncertainty principle, a particle such as an electron

A) must have uncertainties in position and velocity that remain smaller than a particular prescribed value.
B) has a precise position and a precise velocity, but the observer is unable to determine them.
C) does not have a precise position or a precise velocity.
D) can have arbitrarily small simultaneous uncertainties in both position and velocity, although neither uncertainty can be zero.
E) is entirely made of sausage.


C

Physics & Space Science

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The element helium was discovered by studying the sun's spectrum

Indicate whether the statement is true or false

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A pair of like electric charges

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Suppose a certain type of atom had just 5 different energy levels. How many different frequencies could be emitted by a gas composed of atoms of this type?

A) 10 B) 4 C) 25 D) 5 E) an infinite number

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