An achromatic lens brings all colors to the same focus
a. True
b. False
Indicate whether the statement is true or false
False
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Projectile Motion: A cat leaps to try to catch a bird. If the cat's jump was at 60° off the ground and its initial velocity was 2.74 m/s, what is the highest point of its trajectory, neglecting air resistance?
A. 0.29 m B. 0.58 m C. 10.96 m D. 0.19 m
The mass of a lamb that weights 110 N is about
A) 1 kg. B) 11 kg. C) 110 kg. D) 1100 kg. E) none of the above
The primary purpose of a telescope is to:
A) collect a large amount of light and bring it into focus. B) magnify distant objects. C) separate light into its component wavelengths. D) make distant objects appear nearby. E) measure the brightness of stars very accurately.
The Hipparcos satellite has extended our accurate parallax distance measurements to over 200 parsecs
Indicate whether the statement is true or false