Chemistry, 19.01.2021 20:30 sandyrose935
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 radiations, 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.
Answers: 2
Chemistry, 22.06.2019 03:30
At a temperature of 393 k, the temperature of a sample of nitrogen is 1.07 atm what will the pressure be at a temperature of 478 k
Answers: 1
Chemistry, 22.06.2019 05:50
Significant figures are digits read directly from the measuring instrument plus one more digit, which is __ by the observer.
Answers: 2
Chemistry, 22.06.2019 08:20
What is the formula for the compound dinitrogen pentoxide? a. n4o5 b. n5o4 c. n4o6 d. n5o2 e. n2o5
Answers: 3
Chemistry, 22.06.2019 20:10
What would happen to a volleyball left outside in the winter? o o o o a. it would expand. b. it would lose air. c. it would shrink. d. it would explode.
Answers: 2
Two friends at different locations want to communicate with each other by sending low energy signals...
Social Studies, 16.10.2020 18:01
Social Studies, 16.10.2020 18:01
Biology, 16.10.2020 18:01
Mathematics, 16.10.2020 18:01
Chemistry, 16.10.2020 18:01
Mathematics, 16.10.2020 18:01
Mathematics, 16.10.2020 18:01
Mathematics, 16.10.2020 18:01
Mathematics, 16.10.2020 18:01
Mathematics, 16.10.2020 18:01
Mathematics, 16.10.2020 18:01
Mathematics, 16.10.2020 18:01
Business, 16.10.2020 18:01