Electric Field of Point-Charges: Four tiny charged particles (two having a charge +Q and two having a charge -Q) are distributed on the x- and y-axes as shown in the figure. Each charge is equidistant from the origin. In which direction is the net electric field at the point P on the y-axis?
A. directly up (in the +y direction)
B. directly left (-x direction)
C. upwards and towards the left
D. upwards and towards the right
E. The net field is zero, so there is no direction.
Answer: C
You might also like to view...
If the mass of the Earth decreased by a factor of two with no change in radius, your weight would
a. increase by a factor of 4. b. increase by a factor of 2. c. stay the same. d. decrease by a factor of 2. e. decrease by a factor of 4.
What is the surface temperature of a star, if its radiation peak occurs at a frequency of 1.06 × 1015 Hz? (c = 3.00 × 108 m/s, and the constant in Wien's law is 0.00290 m ? K)
A) 17,000 K B) 14,500 K C) 19,000 K D) 20,400 K E) 10,200 K
Specific gravity is a number representing the ratio of a mineral's weight to the weight of an equal volume of water.
TRUE FALSE
Does it make sense to say that an object has twice as much heat as another? Why?
What will be an ideal response?