A +2.0-nC point charge is placed at one corner of a square (1.5 m on a side), and a ?3.0-nC charge is placed on a corner diagonally away from the first charge. What is the magnitude of the electric field at either of the two unoccupied corners?
a. 20 N/C
b. 14 N/C
c. 4.0 N/C
d. 12 N/C
e. 8.0 N/C
b
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a. True b. False Indicate whether the statement is true or false
In which of the following cases would you do the least amount of work?
1.You push a box a distance d across a floor. 2.You pick up the box, walk a distance d, and gently put the box down on the floor. 3.You pick up the box, walk a distance d, and drop the box. 4.Both 1 and 2 are the least. 5.Both 1 and 3 are the least. 6.Both 2 and 3 are the least. 7.The amount of work done is the same in all three cases. 8.The amount of work cannot be determined from information given.
Car A travels with speed v around curve number one, which has a radius r. Car B travels with speed 2v around curve number two, which has a radius 2r. The acceleration will be
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As a 70-kg person stands at the seashore gazing at the tides (which are caused by the Moon), how large is the gravitational force exerted on that person by the Moon?
The mass of the Moon is 7.35 × 1022 kg, the distance to the Moon is 3.82 × 108 m, and G = 6.67 × 10-11 N ? m2/kg2. A) 0.24 N B) 0.024 N C) 0.0024 N D) 0.00024 N