Consider a point on a bicycle wheel as the wheel makes exactly four complete revolutions about a fixed axis. Compare the linear and angular displacements of the point
a. Both are zero.
c. Only the linear displacement is zero.
b. Only the angular displacement is zero.
d. Neither is zero.
C
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Electric Field of Point-Charges: Two tiny particles having charges +20.0 ?C and -8.00 ?C are separated by a distance of 20.0 cm. What are the magnitude and direction of electric field midway between these two charges? (k = 1/4??0 = 9.0 × 109 N ? m2/C2)
A. 25.2 × 106 N/C directed towards the negative charge B. 25.2 × 106 N/C directed towards the positive charge C. 25.2 × 105 N/C directed towards the negative charge D. 25.2 × 105 N/C directed towards the positive charge E. 25.2 × 104 N/C directed towards the negative charge
Two vehicles approach a right angle intersection and then suddenly collide. After the collision, they become entangled
If their mass ratios were 1:4 and their respective speeds as they approached the intersection were both 13 m/s, find the magnitude and direction of the final velocity of the wreck. A) 11 m/s at 76° with respect to the original direction of the lighter car B) 26 m/s at 76° with respect to the original direction of the lighter car C) 16 m/s at 14° with respect to the original direction of the lighter car D) 16 m/s at 76° with respect to the original direction of the lighter car E) 11 m/s at 14° with respect to the original direction of the lighter car
Starting outside the region with the magnetic field, a single square coil of wire enters, moves across, and then leaves the region with a uniform magnetic field 
perpendicular to the page so that the graph shown below represents the induced emf. The loop moves at constant velocity 
. As seen from above, a counterclockwise emf is regarded as positive. In which direction did the loop move over the plane of the page?
a.
The loop moved from bottom to top.
b.
The loop moved from top to bottom.
c.
The loop moved from left to right.
d.
The loop moved from right to left.
e.
All of these directions of motion will produce the graph of emf vs t.
When pore spaces become completely filled with water, the soil is considered to be at
What will be an ideal response?