Radars can help meteorologists detect clouds and sailors detect submarines. Radars send out radio waves and record their echoes after the radio waves reflect off an object. Two radars send out radio waves with the same frequency. The first radar sends radio waves through the air. The second radar sends radio waves through the ocean. What is true about these radio waves?
Answers: 1
Chemistry, 22.06.2019 06:30
The minerals found in bones are deposited by living cells called
Answers: 1
Chemistry, 22.06.2019 10:30
Which of these is not an example of chemical weathering? a. iron-rich mineral rusting b. feldspar turning into clay c. limestone reacting with acid d. granite breaking up into sand
Answers: 1
Chemistry, 23.06.2019 01:30
Ascientist conducted an experiment and discovered that certain plants grow faster when given a particular amount of fertilizer. anouther scientist conducted the same experiment and got similar results. which concept does this best illustrate? a) repetition b) replication c) precision d) validity
Answers: 2
Radars can help meteorologists detect clouds and sailors detect submarines. Radars send out radio wa...
English, 09.05.2021 03:20
Mathematics, 09.05.2021 03:20
Mathematics, 09.05.2021 03:20
Social Studies, 09.05.2021 03:20
Arts, 09.05.2021 03:20
Mathematics, 09.05.2021 03:20
Chemistry, 09.05.2021 03:20
Mathematics, 09.05.2021 03:20
Computers and Technology, 09.05.2021 03:20
Mathematics, 09.05.2021 03:20
Mathematics, 09.05.2021 03:20
Mathematics, 09.05.2021 03:20
Mathematics, 09.05.2021 03:20
Mathematics, 09.05.2021 03:20
Mathematics, 09.05.2021 03:20
Business, 09.05.2021 03:20