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Physical
Earth
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Physical
Physical
Physical
Where does electricity come from?
James Smith
-
August 4, 2020
Physical
Why can’t hot iron magnet attract iron?
James Smith
-
August 4, 2020
Physical
Why magnets attract iron?
James Smith
-
August 4, 2020
Physical
Why must large lightning rods be installed on large buildings?
James Smith
-
August 4, 2020
Physical
Lightning formed like?
James Smith
-
August 4, 2020
Physical
Why can the soundwall transmit sound?
James Smith
-
August 4, 2020
0
Physical
Why do echoes in the alley at night?
James Smith
-
August 4, 2020
0
Physical
Why is the speed of sound transmission in water faster than in air?
James Smith
-
August 4, 2020
0
Physical
Which bullet and explosive sound move faster?
James Smith
-
August 4, 2020
0
Physical
Why when hearing near the mouth of the thermos bottle does not contain water to hear o o
James Smith
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August 4, 2020
0
Physical
Why can sand be arranged into beautiful projects?
James Smith
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August 3, 2020
0
Physical
Why can’t an army stumble across the bridge?
James Smith
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August 3, 2020
0
Physical
Why don’t things floating on the surface of the water float out?
James Smith
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August 3, 2020
0
Physical
Why should mountain climbers not shout loudly when climbing up a high mountain?
James Smith
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August 3, 2020
0
Physical
Why at night and early in the morning, the bell is louder than the day?
James Smith
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August 3, 2020
0
Physical
Why throw the stone into the water, the water surface has ripples in each round?
James Smith
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August 3, 2020
0
Physical
Why is the water flow in the drain hole of the water tank always swirling in one direction?
James Smith
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August 3, 2020
0
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