Which three statements about electromagnetic radiation are true?
1)light is a kind of electro...
Physics, 07.01.2020 10:31 alicemareus
Which three statements about electromagnetic radiation are true?
1)light is a kind of electromagnetic radiation.
2)electromagnetic radiation can travel only short distances.
3)electromagnetic radiation has no mass.
4)electromagnetic radiation can travel through a vacuum.
5)all kinds of electromagnetic radiation are invisible.
Answers: 3
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Abird sitting high in a tree is an example of what type of wnergy
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At very high pressures, gases become and will eventually a) more dense; become hotter b) more dense; change to a liquid or solid c) less dense; combust d) less dense; turn into a liquid
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Physics, 22.06.2019 11:00
Consider a system to be two train cars traveling toward each other. what is the total momentum of the system before the train cars collide? kg • what must the total momentum of the system be after the train cars collide? kg •
Answers: 2
Physics, 22.06.2019 11:00
1. jay fills a wagon with sand (about 20 kg) and pulls it with a rope 30 m along the beach. he holds the rope 25° above the horizontal. the rope exerts a 20-n tension force on the wagon. how much work does the rope do on the wagon?
Answers: 1
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