Explain the relationship between velocity and acceleration
What will be an ideal response?
Acceleration is the time rate of change of velocity.
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Consider a capacitor connected across the ac supply. The current through the capacitor will ________ as the capacitance is increased
A) increase B) remain constant C) decrease
Consider the motion of a 1.00-kg particle that moves with potential energy given by U(x) = -(2.0 J?m)/x + (4.0 J?m2)/x2. Suppose the particle is moving with a speed of 3.00 m/s when it is located at x = 1.00 m
What is the speed of the object when it is located at x = 5.00 m? A) 2.13 m/s B) 3.00 m/s C) 4.68 m/s D) 3.67 m/s E) This question cannot be answered. You need to know the direction of the velocity, not just the speed, when the particle is located at x = 1.00 m.
The circuit below shows three resistors in series. R3 > R2 > R1. The resistors are all made of the same wire with the same diameter but have different lengths. Rank the magnitudes of the electric fields in the resistors from least to greatest
a.
E3 < E2 < E1.
b.
E2 < E1 = E3.
c.
E1 = E2 = E3.
d.
E1 = E3 < E2.
e.
E1 < E2 < E3.
Light gathering power and resolving power both depend on what characteristic of a telescope?
a. number of lenses b. magnification c. focal length d. location e. diameter