If an astronomical light source were moving toward us, then what would be observed?

(a) a blue shift

(b) a shift toward longer wavelengths

(c) a shift toward lower frequencies

(d) a sonic boom

A switch in an electric circuit controls the flow of electrons in the circuit. True O False

Which of the following best describes a mathematical wave A: A transfer of energy B: A movement of matter C: When energy is converted from one form to another D: A periodic disturbance of a medium

A uniform, thin, solid door has height 2.20 m, width 0.870 m, and mass 23.0 kg. (a) find its moment of inertia for rotation on its hinges. (b) is any piece of data unnecessary

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Which of these stars has the coolest surface temperature? A. A starB. F starC. G starD. K star

What is the central core of hair

A star with the same mass of the sun has a newly discovered planet whose semi-major axis of 2.48 au and an eccentricity of 0.08. what is the aphelion distance of the new planet

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Why is fluorine special in terms of electronegativity?

The airbag inflates and deflates quickly so