We don't know. A black hole is a star that has collapsed into its own gravity. The gravity in fact, is so strong that even light cannot get through it. That's why it looks black to us.
The answer is C. because the lines will look the same as the earths gravity field (you can look up a graph)
Answer:
18.94 m/s
Explanation:
The bat becomes the source of sound . Source is moving towards observer
apparent frequency = actual frequency x (V / V - V_s)
V is velocity of sound and V_s is velocity of source or bat.
apparent frequency / actual frequency = V / (V - V_s)
21 / 12 = 340 / (340 - V_s)
1.059(340 - V_s) = 340
340 x .059 = 1.059 V_s
V_s = 18.94 m/s
=
I'm gonna have to guess B) Automation sorry if I get it incorrect
Limestone, yeah limestone.
