A vehicle designed to operate on a drag strip accelerates from zero to 30 m/s while undergoing a straight line path displacement of 60 m. What is the vehicle's acceleration if its value may be assumed to be constant?
a. 2.0 m/s2
c. 10 m/s2
b. 7.5 m/s2
d. 15 m/s2
B
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If the radius of star A is twice the radius of star B, but both have similar temperatures, how do their luminosities compare?
A: Star A is 2 times as luminous as star B. B: Star A is 4 times as luminous as star B. C: All stars have the same luminosities. D: Star A is 4 times less luminous than star B. E: Star A is 2 times less luminous than star B.
Explain the three different hypotheses for the origin of the Moon and how evidence from the Apollo lunar rocks persuaded scientists to develop a new hypothesis
What will be an ideal response?
An object 30 cm in front of a concave spherical mirror (f = 10 cm) is moved toward the mirror until it is 20 cm from it. Sketch ray diagrams for these cases and estimate the factor by which the image magnification changes
Indoor air is much cleaner than outdoor air
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