What is the name of constellations that appear to never rise or set?
a. polar constellations
b. circumference constellations
c. circular constellations
d. celestial polar constellations
e. circumpolar constellations
e
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____ are star-like objects that contain less than 0.08 solar masses an will never raise their core temperatures high enough that the proton-proton chain can begin. Other minor fusion reactions do occur in these objects. They fall in a gap between the low-mass M dwarf stars and the massive planets in which nuclear fusion never occurs
a. Brown dwarfs b. Herbig-Haro objects c. Bok globules d. T-Tauri star e. Main sequence stars
A 0.50kg disk spins at 250rpm. A torque of 12.5Nm is applied for 0.150s to bring it to rest. What is the disk’s radius?
A. 0.54m B. 0.38m C. 0.29m D. 0.14m
The probability density for an electron that has passed through an experimental apparatus is shown in the figure
If 4100 electrons pass through the apparatus, what is the expected number that will land in a 0.10 mm-wide strip centered at x = 0.00 mm? A) 140 B) 1400 C) 450 D) 45
When a Hooke's law spring is stretched a distance 3x, how much is the increase in energy stored in it from when it was stretched a distance x? Give your answer in terms of a multiple of the energy stored in the spring when it is stretched a distance x
a. It is 3 times as much. b. It is 8 times as much. c. It is 4 times as much. d. It is 9 times as much.