Physics, 04.12.2019 07:31, InvictusPain4777
Electromagnetic and mechanical waves both transfer energy. how is an electromagnetic wave different from a mechanical wave?
question 4 options:
a. an electromagnetic wave has frequency, and a mechanical wave does not.
b. an electromagnetic wave is made of atoms, and a mechanical wave is not.
c. an electromagnetic wave can travel in a vacuum, and a mechanical wave cannot.
d. electromagnetic waves have frequencies that never change, and mechanical wave frequencies change.
Answers: 1
Physics, 21.06.2019 21:30, galaxyworld36
Janelle made a hypothesis bout the uneven temperatures inside her house during winter. she believes that 50% of the ducts are blocked and she plans to investigate. if she wants to prove her hypothesis using scientific processes what should she do next?
Answers: 2
Physics, 21.06.2019 23:20, stormserena
The 5-kg cylinder is initially at rest when it is placed in contact with the wall b and the rotor at a. if the rotor always maintains a constant clockwise angular velocity v = 6 rad> s, determine the initial angular acceleration of the cylinder. the coefficient of kinetic friction at the contacting surfaces b and c is mk = 0.2.
Answers: 3
Physics, 22.06.2019 00:00, hlhunter11p8f0o0
An object moves from the position +34m to the position -15m in 15 seconds. what is it's total displacement? what is it's average velocity?
Answers: 1
Physics, 22.06.2019 01:00, MoparorNocar061401
Complete the sentence to describe the law of conservation of energy. the law of conservation of energy states that energy cannot be created or , but it can be
Answers: 1
Electromagnetic and mechanical waves both transfer energy. how is an electromagnetic wave different...
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