1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Gre4nikov [31]
4 years ago
11

An excited hydrogen atom releases an electromagnetic wave to return to its normal state. You use your futuristic dual electric/m

agnetic field tester on the electromagnetic wave to find the directions of the electric field and magnetic field. Your device tells you that the electric field is pointing in the positive y direction and the magnetic field is pointing in the negative x direction. In which direction does the released electromagnetic wave travel?
Physics
1 answer:
Norma-Jean [14]4 years ago
6 0

Answer:

Explanation:

Direction of velocity of electromagnetic wave is given by the formula

E = E j ( vector form )

B = - Bi ( vector form )

Direction of velocity = direction of vector E X B

= E X B

= E j x -Bi

= - EB -k

v = EBk

So the direction of velocity will be along z direction.

You might be interested in
Joe and Bill throw identical balls vertically upward. Joe throws his ball with an initial speed twice as high as Bill. If there
exis [7]

Answer:

the maximum height of Joe's ball will be 4 times Bill's ball.

Explanation:

let bill's velocity be v then Joe's velocity is 2v.

and initial velocities of both bill and Joe are 0

for Bill

v^2-u^2= 2gh

h=\frac{v^2}{2gh}

for Joe

(2v)^2-u^2= 2gh'

h'=\frac{4v^2}{2g}

thus we can write that

h'=4h

the maximum height of Joe's ball will be 4 times Bill's ball.

8 0
3 years ago
Which picture shows the wave with the smallest wavelength?
SpyIntel [72]

Answer:

b. B

Explanation:

Picture B has the smallest peaks among all which henceforth makes the wavelength i.e. distance between two adjacent crests or troughs, small.

4 0
2 years ago
Read 2 more answers
Which statement is true for two pieces of iron at the same temperature ? A. The total kinetic energy of their particles is equal
statuscvo [17]

The complete options are;

A. The average kinetic energy of their particles is the same.

B. The total kinetic energy of their particles is equal.

C. Heat flows from the larger object to the smaller object.

D. Heat flows from the object with higher potential energy to the object with lower potential energy.

Answer:

Explanation:

From the relationship between average kinetic energy and temperature, we have the formula;

E_k = (3/2)kT

Where;

k is a constant known as boltzmann constant.

T is known as temperature

We can see that at the same temperature (T), kinetic energy will remain the same because from the formula, E_k depends km only the temperature.

Thus, average kinetic energy of their particles saying that.

3 0
3 years ago
Prove that young modulus of elasticity and pressure have the same dimensions​
ivann1987 [24]

Answer:

The dimensions of Young's Modulus, as well as material stress, are the same as pressure because stress is like pressure in a solid, except with some key differences that warrant the use of different terminology.

8 0
3 years ago
A man standing on a bus remains still when the bus is at rest. When the bus moves forward and then slows down the man continues
vovikov84 [41]

When the bus starts moving forward, the man remains at rest,
causing him to lean back.

When the bus slows down, the man continues to move forward,
and appears to lean forward.

Both events are examples of the effect of inertia.

6 0
4 years ago
Other questions:
  • On which moment of inertia of an object does depend on?
    5·1 answer
  • Fitness results come from hard work, not an instant fix<br> Question 1 options:<br> True<br> False
    13·1 answer
  • Two point charges are fixed on the y axis a negative point charge q1-26 μC at y1 = +0.21 m and a positive point charge q2 art y2
    11·1 answer
  • Which statement is true concerning the evidence for black holes?
    6·1 answer
  • At which point will the riders experience centripetal acceleration?
    7·1 answer
  • An inclined plane of effective length 4.5m is used to raise a load of 500N through a height of 1.5m .If the list is raise by for
    10·1 answer
  • Two children sitting on a see saw such that they can't swing.what is the net torque in this situation ??? Need an appropriate an
    8·2 answers
  • A real number that is not a natural​
    12·1 answer
  • What is the displacement of the student from the bus stop to the mailbox?
    15·1 answer
  • Is the Transco Tower were actually 3000 meters tall how long would an object take to free fall off the top of the building
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!