What do ultrasounds use?
radio waves
ultraviolet waves
light waves
sou...
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An object moves from the position +34m to the position -15m in 15 seconds. what is it's total displacement? what is it's average velocity?
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If the wheels lock when braking suddenly the vehicle: a: loses traction b: lose steering wheel ability c: gain speed slightly d: gain steering ability
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Which compound is held together by the electrostatic force between two ions? a. co2 b. cci4 c. h2s d. mgf2
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For waves in the ocean, the medium of the waves is a. air b. water c. energy d. a passing boat
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