The y-component of the electric field of an electromagnetic wave traveling in the +x direction through vacuum obeys the equation Ey = (375 N/C) cos[kx - (2.20 × 1014 rad/s)t]. (c = 3.0 × 108 m/s)
(a) What is the largest that the x-component of the wave can be?
(b) What is the largest that the z-component of the wave can be?
What will be an ideal response?
Answer: (a) zero (b) 1.25 µT
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Clouds inhibit the outflow of terrestrial radiation. This acts to
A) insulate Earth's surface temperature. B) warm Earth's surface temperature at night. C) cool Earth's surface temperature during the day. D) insulate Earth's surface temperature, keeping it warmer at night and cooler in the day.
Calculate the centripetal acceleration for each of the two trials
If originally there were X atoms of radioactive isotope present and now there are only X/2 atoms, how many half-lives have elapsed?
A) 3 B) 1 C) 4 D) 2
The notation s-1 means __________
Fill in the blank(s) with correct word