With a prime focus reflector, why is digital imaging much easier than using an eyepiece for visual work?
What will be an ideal response?
A CCD is tiny, and blocks little of the light path. Your head would be in front of the mirror at prime focus, blocking much of the light if you tried to use it visually.
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The surface tension of water is 0.0730 N/m. What is the height of the water in a capillary tube of diameter 1.00 mm?
A. 3.02 cm B. 2.98 cm C. 2.75 cm D. 2.55 cm E. 2.40 cm
The ratio of kinetic energy of object A to the kinetic energy of object B is 2:1. Object A is moving with a speed of 6.0 m/s and object B is moving with a speed of 2.0 m/s. If the mass of object A is 4.0 kg then what is the mass of object B?
A) 2.0 kg B) 4.0 kg C) 8.0 kg D) 18 kg E) 16 kg
__________is the spherical region of a spiral galaxy, containing a thin scattering of stars, star clusters, and small amounts of gas
A) A halo B) The central bulge C) The disk component D) A spiral tracer
Where do the majority of naked-eye stars fall on the H-R diagram? Is this true of the majority of stars close to our Sun as well?
What will be an ideal response?