Physics, 03.05.2021 01:30 elijahcarson9015
Does sound travel faster in a warm room or a cold room? Explain your answer.
What will most likely happen if a sound wave moves from the air through a solid?
It will increase in frequency.
It will decrease in speed.
It will increase in speed.
It will decrease in wavelength.
Answers: 3
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What is the function of the commutator in a dc motor? a. to spin the magnet b. to change direct current into alternating current c. to change alternating current into direct current d. to spin the wire coil
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Ais useful when you need a simple machine to you separate two things. a. lever b. screw c. pulley d. wedge
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Two pans of a balance are 24.1 cm apart. the fulcrum of the balance has been shifted 1.33 cm away from the center by a dishonest shopkeeper. by what percentage is the true weight of the goods being marked up by the shopkeeper? assume the balance has negligible mass. answer in units of %.
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Select all the correct answers. which changes will increase the rate of reaction during combustion? decreasing the area of contact between the reactants adding more oxygen to the reaction removing heat from the reaction changing the reactants from solid form to powdered form lowering the exposure of the reactants to air
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Does sound travel faster in a warm room or a cold room? Explain your answer.
What will most likely...
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