An airplane flies in a horizontal circle of radius 500 m at a speed of 150 m/s. If the plane were to fly in the same 500 m circle at a speed of 300 m/s, by what factor would its centripetal acceleration change?
a. 0.25
b. 0.50
c. 1.00
d. 2.00
e. 4.00
e
Physics & Space Science
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A successfully tested hypothesis may take on the status of a(n)
a. experimental result. b. theory. c. scientific law. d. concept. e. superior hypothesis.
Physics & Space Science
When an electron is in a magnetic field, different spin states associated with the electron's magnetic moment will occur. What are these states called?
a. up, down c. clockwise, counterclockwise b. plus, minus d. north, south
Physics & Space Science
The six diagrams represent the sky at six different latitudes. Which diagrams represent Southern Hemisphere skies?
What will be an ideal response?
Physics & Space Science
The gas and dust in the disk of the Milky Way amount to approximately ________ of the mass of the stars.
A. 50% B. 15% C. 90% D. 30%
Physics & Space Science