Which of the following electromagnetic waves is not used for communications?
A. Ultraviolet
B...
Biology, 18.12.2020 14:50 pennygillbert
Which of the following electromagnetic waves is not used for communications?
A. Ultraviolet
B. Infrared
C. Light
D. Radio
Answers: 2
Biology, 22.06.2019 02:30
Sally and sue were investigating the topic of friction in science. they used a small car and a ramp as seen in the picture to test what they were learning. they knew that they slipped easily on waxed floors but not on carpet, so they decided to change the material on the surface of the ramp to see what happened. they planned to use glass, carpet, aluminum foil, and sandpaper and run the car down the ramp over each surface. what would be the best research question to guide the girls' experiment? a) does the amount of surface area affect the friction on the moving car? b) will the car travel fastest on the glass surface? c) how does the angle of the ramp affect the speed of the car? d)do rougher surfaces tend to create more friction than smooth surfaces?
Answers: 1
Biology, 22.06.2019 06:30
Aplant may open end close its stomata to prevent excess water loss and maintain
Answers: 1
Biology, 22.06.2019 11:30
Plz quick a natural resource that is replaceable through a cycle in nature or sustainable practice is called a? the subject is science
Answers: 1
Biology, 22.06.2019 17:00
Drag the labels to the correct location in the equation. not all labels will be used (1 kilometer = 1,000 meters, 1 hour = 60 minutes, 1 minute = 60 seconds) complete the steps necessary to convert 55 kilometers per hour to meters per second, min 60 1,000 15.28100 sec min 55 km 1 hour 5fhkem x 4 km] m x 1 hourin xoo1 min 1 km sec reset next
Answers: 1
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