Which of the following best describes why we say that light is an electromagnetic wave?
...
Physics, 12.10.2019 00:20 cheesy2271
Which of the following best describes why we say that light is an electromagnetic wave?
the passage of a light wave can cause electrically charged particles to move up and down.
the term electromagnetic wave arose for historical reasons, but we now know that light has nothing to do with either electricity or magnetism.
light can be produced only by electric or magnetic appliances.
light is produced only when massive fields of electric and magnetic energy collide with one another.
Answers: 2
Physics, 22.06.2019 07:30
Write the function getkthdigit(n, k) that takes a possibly-negative int n and a non-negative int k, and returns the kth digit of n, starting from 0, counting from the right
Answers: 3
Physics, 22.06.2019 19:40
Uranium has two naturally occurring isotopes. 238u has a natural abundance of 99.3% and 235u has an abundance of 0.7%. it is the rarer 235u that is needed for nuclear reactors. the isotopes are separated by forming uranium hexafluoride uf6, which is a gas, then allowing it to diffuse through a series of porous membranes. 235uf6 has a slightly larger rms speed than 238uf6 and diffuses slightly faster. many repetitions of this procedure gradually separate the two isotopes. what is the ratio of the rms speed of 235uf6 to that of 238uf6? express your answer to five significant figures.
Answers: 3
Physics, 22.06.2019 20:40
Newtons view of arrangement of the universe. don't copy from anywhere.
Answers: 3
Physics, 22.06.2019 23:30
You have two photos of a person walking. one shows the person at the corner of third and main streets, the other shows the person at the corner of tenth and main streets. there are lampposts at every corner in this town, and the first picture shows it to be 10: 32: 00 exactly. the second picture shows it to be 10: 49: 30. you know three facts: (1) all of the clocks are synchronized; (2) there are exactly 12 equal-sized blocks per kilometer in this town; and (3) the streets that cross main in this area are numbered consecutively, with no interruptions. what is the person’s average speed in kilometers per hour?
Answers: 2
Mathematics, 05.05.2021 19:10
Mathematics, 05.05.2021 19:10
Mathematics, 05.05.2021 19:10
Mathematics, 05.05.2021 19:10
History, 05.05.2021 19:10
Chemistry, 05.05.2021 19:10
Mathematics, 05.05.2021 19:10
Mathematics, 05.05.2021 19:10
Mathematics, 05.05.2021 19:10
English, 05.05.2021 19:10
Mathematics, 05.05.2021 19:10