A neutron star has approximately the density of nuclear material. If a neutron star is the mass of the sun, 1.99 x 1030kg, what would be its radius? You may wish to use the relationship r=(1.2 fm)A1/3 together with the mass of a proton, 1.67 x 10-27kg, to estimate.
A. 12 km
B. 19 km
C. 13 km
D. 9.8 km
C. 13 km
Physics & Space Science
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The twinkling of starlight and the focusing of images by lenses are due to ________ of light
Fill in the blank(s) with correct word
Physics & Space Science
The voltage across the input terminals of a transformer is 120 V. The primary has 25 loops and the secondary has 50 loops. The voltage the transformer delivers is
A) 30 V. B) 60 V. C) 120 V. D) 240 V. E) none of the above
Physics & Space Science
What happens to the size and mass of an object as it moves faster?
What will be an ideal response?
Physics & Space Science
At a location where g = 9.80 m/s2, a projectile returns to its original height after 4.08 seconds, during which time it travels 76.2 meters horizontally. If air can be neglected, what was the projectile's initial speed?
What will be an ideal response?
Physics & Space Science