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card_137443.txt
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1990-11-03
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928b
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38 lines
-- card: 137443 from stack: in
-- bmap block id: 0
-- flags: 4000
-- background id: 7720
-- name: #419
----- HyperTalk script -----
on openCard
global group,rightone
put 42 into group
put "C" into rightone
pass openCard
end openCard
-- part contents for background part 20
----- text -----
Question #42
-- part contents for background part 1
----- text -----
4H-5.1 What are "electromagnetic waves"?
-- part contents for background part 11
----- text -----
Alternating currents in the core of an electromagnet
-- part contents for background part 27
----- text -----
A wave consisting of two electric fields at right angles to each other
-- part contents for background part 28
----- text -----
A wave consisting of an electric field and a magnetic field at right angles to each other
-- part contents for background part 29
----- text -----
A wave consisting of two magnetic fields at right angles to each other