Replacing a wire resistor with another of the same material and length but with three times the diameter will have the effect of changing the resistance by what factor?
a. 1/3
b. 1/9
c. 3
d. 9
b
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The neap tide can occur at the ________ or ________ phases of the Moon
Fill in the blank(s) with correct word
The figures below represent interference fringes. The distances from the screen to the slits is the same for each figure, and the planes of the screen and the slits are parallel. Which figure(s) represent(s) slits with the greatest spacing d between the slits? The white spaces represent the interference maxima
a.
I.
b.
II.
c.
III.
d.
IV.
e.
V.
If the acceleration vector of an object is directed anti-parallel to the velocity vector,
A) the object is turning. B) the object is speeding up. C) the object is slowing down. D) the object is not moving. E) this situation would not be physically possible.
Electrons in a particle beam each have a kinetic energy of 3.2 × 10^-17 J. What is the magnitude of the electric field that will stop these electrons in a distance of 0.05 m? (e = 1.6 × 10^-19 C)
a. 2000 N/C c. 200 N/C b. 4000 N/C d. 1000 N/C