A Ball Is Whirled in a Horizontal Circle of Radius

question 46

Multiple Choice

A ball is whirled in a horizontal circle of radius r and speed v.The radius is increased to 2r keeping the speed of the ball constant.The period of the ball changes by a factor of

• A)half
• B)one
• C)two
• D)three
• E)four

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Definitions:

Radioactive Isotopes

Atoms of the same element that have different numbers of neutrons in their nuclei, causing them to be unstable and decay, releasing radiation.

Phosphate Groups

Phosphate groups are chemical groups containing phosphorus and oxygen; they play a key role in energy transfer and molecular signaling in cells.

Covalent Bond

A chemical bond involving the sharing of electron pairs between atoms, leading to the formation of a stable molecule.

Hydrogen Bond

A hydrogen bond is a weak bond between two molecules resulting from an electrostatic attraction between a proton in one molecule and an electronegative atom in the other.