Which of the following statements are true? (select all that apply.)
(a) at any time,...
Which of the following statements are true? (select all that apply.)
(a) at any time, the electric and magnetic field lines are parallel to each other.
(b) all moving electric charges give rise to electromagnetic waves.
(c) electromagnetic waves can exert forces on charged particles that they encounter.
(d) the intensity of the wave drops off as 1/r.
(e) electromagnetic waves are produced when changing electric fields which produce magnetic fields which are also changing, thus producing a changing electric field, and so on.
(f) the direction of v can be found using the right-hand rule. put your four fingers along e, sweep them in the direction of b and your thumb will point along v.
(g) electromagnetic waves carry energy and momentum.
Answers: 2
Physics, 22.06.2019 10:00, kanonhuffmanp3rnmy
The frequencies refer to the sample data collected from a population of interest when performing a hypothesis test comparing two or more population proportions.
Answers: 2
Physics, 22.06.2019 10:50, dontcareanyonemo
The temperature at a point (x, y) is t(x, y), measured in degrees celsius. a bug crawls so that its position after t seconds is given by x = 6 + t , y = 8 + 1 3 t, where x and y are measured in centimeters. the temperature function satisfies tx(3, 9) = 5 and ty(3, 9) = 4. how fast is the temperature rising on the bug's path after 3 seconds? (round your answer to two decimal places.)
Answers: 3
Physics, 22.06.2019 15:00, weridness80
For waves in the ocean, the medium of the waves is a. air b. water c. energy d. a passing boat
Answers: 1
Physics, 22.06.2019 21:30, Inrimid3619
Aperson touches a large chunk of ice with their hand and remarks, “this is making me cold.” explain what this person is feeling. is the ice transferring “cold” to the person? is there a heat transfer occurring? explain.
Answers: 1
Mathematics, 06.11.2020 22:00
Advanced Placement (AP), 06.11.2020 22:00
Mathematics, 06.11.2020 22:00
History, 06.11.2020 22:00
English, 06.11.2020 22:00