Answer:
Its not A..
Explanation:
I chose A - was incorrect
Answer:
B it decreases
Explanation:
the movement of a positive test charge in the direction of an electric field would be like a mass falling downward within Earth's gravitational field. Both movements would be like going with nature and would occur without the need of work by an external force. This motion would result in the loss of potential energy
A soundwave will go through a medium but once it goes through, the sound that you hear is muffled or not as clear usually just like sound going through a wall. The soundwaves will be something like moved and the sound you hear might not be the same or as clear as the original sound was
Answer:
v = 0.969 m/s
Explanation:
See attachment for FBD
p = 0.25*(4/5) = 0.2 m
Sum of normal forces
Ns (3/5) - 0.2*Ns*(4/5) = 2 * (v^2 / 0.2)
Sum of vertical forces
Ns (4/5) - 0.2*Ns*(3/5) = 2*9.81
Solve both equations simultaneously to get Ns and v
Ns = 21.3 N
v = 0.969 m/s