A _____ has a main mirror called the primary mirror
A) reflecting telescope
B) refracting telescope
C) Keplerian telescope
D) Galilean telescope
A
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What is the audible range of sound frequencies?
What will be an ideal response?
20.0 L of a monatomic ideal gas at a pressure of 100 kPa expand adiabatically until the volume doubles. What is the pressure in the gas at that point?
A) 31.5 kPa B) 50.0 kPa C) 200 kPa D) 317 kPa E) 400 kPa
An object that is 4.0 cm tall is placed 15 cm in front of a concave mirror of focal length 20 cm. (a) Where is the image formed and how far is it from the mirror? (b) How tall is the image?
What will be an ideal response?
The enclosed mass M( A) concentrated in the center
B) spread out over a large range of radii
C) distributed like a doughnut, with a hole in the center