Approximately 90 percent of the mass of the Milky Way is located in the halo of the galaxy in the form of dark matter
Indicate whether the statement is true or false
TRUE
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A telescope that suffers from chromatic aberration and has a low light-gathering power is most likely a:
A) small diameter reflecting telescope. B) small diameter refracting telescope. C) large diameter refracting telescope. D) large diameter reflecting telescope.
What is the maximum distance we can shoot a dart, from ground level, provided our toy dart gun gives a maximum initial velocity of 2.78 m/s and air resistance is negligible?
A) 0.789 m B) 1.58 m C) 1.39 m D) 0.394 m
A 475-gram ball is traveling horizontally at 12.0 m/s to the left when it is suddenly struck horizontally by a bat, causing it to reverse direction and initially travel at 8.50 m/s to the right
If the bat produced an average force of 1275 N on the ball, for how long (in milliseconds) was it in contact with the ball?
When an ideal gas is compressed isothermally:
A. the internal energy of the gas does not change. B. the work done on the gas is zero. C. heat flows into the gas. D. the temperature of the gas increases.