How is the resolution of an astronomical image related to the precision of a measurement?
What will be an ideal response?
The precision of a measurement is limited by the resolution of an astronomical image, which depends on the ability of a telescope to detect details.
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A coil of wire is connected to a galvanometer. When the coil is rotated in a magnetic field, the galvanometer records a current. The current results because of __________
Fill in the blank(s) with correct word
Spherical Mirrors: A cell phone that is 8.90 cm tall is placed in front of a convex mirror. The image of the phone is 7.80 cm tall and is located 14.8 cm from a mirror. What is the mirror's focal length?
A. -120 cm B. -105 cm C. +16.9 cm D. -13.0 cm E. +120 cm
Your instructor rides on a merry-go-round turning at a constant rate. In which direction does the net force on your instructor point?
a. down b. tangent to the circular path c. away from the center d. toward the center
If you had something the size of a sugar cube that was made of neutron star matter, it would weigh
A) about 50 pounds. B) as much as the entire Earth. C) about as much as a truck. D) about as much as a large mountain.