Two friends at different locations want to communicate with each other by sending low energy signals. which of the following methods can they use to communicate? a) produce x-rays using colliding electrons and send them to radios, which capture sound b) send messages using infrared radiation, which travel in the form of waves c) send radio waves through intervening media like radio and television d) produce sound waves using microwaves from heated objects
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Chemistry, 21.06.2019 15:50
Which of these reactions are redox reactions? check all that apply.cd + hcl β cdcl2 + h2cucl2 + na2s β 2nacl + cuscaco3 β cao + co2 2zns + 3o2 β 2zno + 2so2 ch4 + 2o2 β co2 + 2h2o
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Chemistry, 22.06.2019 11:40
Enzymes affect the reactions in living cells by changing the
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Two friends at different locations want to communicate with each other by sending low energy signals...
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