While gravity is always attractive, electromagnetic forces are always repulsive
Indicate whether the statement is true or false
FALSE
Physics & Space Science
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Neutron stars were first discovered in the 1930's
Indicate whether the statement is true or false
Physics & Space Science
What is the direction of 
in the wave as it passes S?
A. A B. B C. C D. D E. Toward the viewer. F. Away from the viewer. T. The vector is zero. G. AA H. BB I. CC J. DD
Physics & Space Science
When an unstable Cd nucleus undergoes gamma decay, the nucleus formed is that of
a. Cadmium. b. Tin. c. Silver. d. Palladium. e. Indium.
Physics & Space Science
A satellite circles planet Roton every 2.8 h in an orbit having a radius of 1.2 × 10^7 m. If the radius of Roton is 5.0 × 10^6 m, what is the magnitude of the free-fall acceleration on the surface of Roton?
a. 31 m/s2 b. 27 m/s2 c. 34 m/s2 d. 40 m/s2 e. 19 m/s2
Physics & Space Science