Answer:
24.5 m/s
Explanation:
Since the work done by the electric field on the charge equals the kinetic energy of the ball, then
qV = 1/2mv²
and v = √(2qV/m)
where q = charge = + 0.05 C, V = potential difference = 12.0 V, m = mass of ball = 2.0 g = 0.002 kg
Substituting the values into v, we have
v = √(2 × + 0.05 C × 12.0 V/0.002 kg)
= √(1.2 CV/.002 kg)
= √(600 CV/kg)
= 24.5 m/s
Answer:
Magnitude of the horizontal force applied = 120N
Explanation:
The explanation and the FBD - free body diagram is shown in the attachment
From F = Miu(R)
Answer:
This statement is false.
Explanation:
If the farmers field is close to the stream, and has experienced a lot of runoff, the runoff will carry chemicals from the farm into the stream, which includes fertilizers among other chemicals. This runoff into the stream will not lead to a decrease in the level of fertilizers in the stream. Therefore, one of the effect of this cannot be a decrease in the level of fertilizers from the field.
because the sperm and the egg will dry out