How is the rotation of Venus different from that of other terrestrial planets?
What will be an ideal response?
Venus's rotation is n retrograde.
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If the theory that novae occur in close binary systems is correct, then recurrent novae should
a. produce synchrotron radiation. b. occur in regions of star formation. c. not occur in old star clusters. d. all be visual binaries. e. repeat after some interval.
Describe some of the results from the Cassini/Huygens mission to Saturn and its moons
What will be an ideal response?
In a compound microscope
A) both the objective and the eyepiece form real images. B) magnification is provided by the objective lens and not by the eyepiece. The eyepiece merely increases the resolution of the image viewed. C) magnification is provided by the objective and not by the eyepiece. The eyepiece merely increases the brightness of the image viewed. D) the magnification is m1 + M2, where m1 is the lateral magnification of the objective and M2 is the angular magnification of the eyepiece. E) the image of the objective serves as the object for the eyepiece.
A 0.20-kg block rests on a frictionless, level surface and is attached to a horizontally aligned spring with a spring constant of 80 N/m. The block is initially displaced 4.0 cm from the equilibrium point and then released to set up a simple harmonic motion. What is the speed of the block when it passes through the equilibrium point?
a. 2.1 m/s c. 0.80 m/s b. 1.6 m/s d. 0.57 m/s