What is meant by ‘net charge?'
a. the total amount of positive charge on an object
b. the total amount of negative charge on an object
c. the total amount of neutral charge on an object
d. A minus B
D
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When something is restricted to having only certain numerical values, it is said to be ________________
Fill in the blank(s) with correct word
Kiloparsec is a unit of sound
Indicate whether the statement is true or false
From meteorite and lunar rock samples, astronomers have determined the age of the Solar System to be ____
a. 4.6 million years b. 10 million years c. 2.4 billion years d. 4.6 billion years e. 8.4 billion years
A sinusoidal electromagnetic wave is propagating in vacuum. At a given point P and at a particular time, the electric field is in the +x direction and the magnetic field is in the -y direction
(a) What is the direction of propagation of the wave? (b) If the intensity of the wave at point P is 0.36 W/m2, what is the electric field amplitude at that point? (c = 3.00 × 108 m/s, ?0 = 4? × 10-7 T • m/A, ?0 = 8.85 × 10-12 C2/N • m2)