The ideal shape for the primary mirror of a telescope is concave parabolic
a. True
b. False
Indicate whether the statement is true or false
True
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51 Pegasi is important because
a. it is a pulsar with planets orbiting around it. b. it is a star with a planet that is known to support intelligent life. c. it is the largest satellite of Jupiter. d. it is the largest known asteroid. e. it is the first star like our sun that was found to have a planet orbiting it.
The EEF shown is incorrectly drawn because
A. It curves toward the axis in a forbidden region or away from the axis in an allowed region.
B. Its wavy part doesn’t have the right number of bumps.
C. The amplitude of the wavy part varies incorrectly.
D. The wavelength of the wavy part varies incorrectly.
E. One of the exponential-like tails has the wrong length.
A circular loop of wire of cross-sectional area 0.12 m2 consists of 200. turns, each carrying 0.50 A. It is placed in a magnetic field of 0.050 T oriented at 30° to the plane of the loop. What torque acts on the loop?
What will be an ideal response?
What would be the expected radius of a nucleus having 82 protons and 125 neutrons?
A) 5.2 fm B) 5.9 fm C) 6.0 fm D) 7.1 fm E) 17 fm