I believe the answer would be A. because a magnet has both a south and a north pole, and electrical charges are formed by positive and negative forces. Hope I helped!
Answer:
a) 28.1 m/s
b) 27.2 m
Explanation:
a)
Consider the motion of the marble in downward direction taking down direction as positive
v₀ = initial velocity = 5 m/s
v = final velocity as it hits the ground = ?
a = acceleration = 9.8 m/s²
d = vertical height traveled = 39 m
Using the equation
v² = v₀² + 2 a d
v² = 5² + 2 (9.8) (39)
v = 28.1 m/s
b)
t = time of travel = 1.90 s
y = vertical distance traveled
Using the equation
y = v₀ t + (0.5) a t²
y = (5)(1.90) + (0.5) (9.8) (1.90)²
y = 27.2 m
Answer:
A. 30 m/s
D. 15 kilometers
Explanation:
Vector quantities have both magnitude and direction. Among the provided choices, B and C are scalar quantities as they have no direction.
30 m/s is the magnitude for velocity, a derivative of displacement.
15 kilometers is the metric magnitude (10³m) for displacement.
Until acted on by an outside force
Answer: The Hall effect is the movement of charge carriers through a conductor towards a magnetic attraction. The Hall effect causes a measurable voltage differential across the conductor such that one side is positively charged and the other negatively.
Explanation: