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
NikAS [45]
4 years ago
9

An observer that moves with an electrical charge senses:

Physics
2 answers:
kaheart [24]4 years ago
7 0

Answer:

B.) An Electric Field

Explanation:

Shtirlitz [24]4 years ago
3 0

Here observer is moving along with an electrical charge

now magnetic field on a moving charge is given by equation

F = qvB sin\theta

electrical force on a moving charge is given by formula

F = qE

so here we can say when observer is moving with the charge it will have two forces on it

1. magnetic force due to existing magnetic field

2. electric force due to electric field

so here he must have to experience both type of field presence

So here correct answer must be

<em>C- electric and magnetic fields </em>

You might be interested in
you kick a soccer ball straight up into the air with a speed of 21.2 m/s how long does it take the soccer ball to reach its high
skelet666 [1.2K]

i just had this question and i totally guessed. it was 2.2.

6 0
3 years ago
What does it mean when the
vfiekz [6]

Answer:

it will option B,hope it helps

7 0
3 years ago
You were driving your car to UTD at a speed of 35 miles per hour. You stopped at the FloydCampbell intersection with the signal
ser-zykov [4K]

Answer:

green light have high energy

Explanation:

We have given the wavelength of the red light \lambda =6.45\times 10^{-5}cm=6.45\times 10^{-7}m

Speed of the light c=3\times 106{8}m/sec

The energy of the signal is given by E=h\nu =h\frac{c}{\lambda }=\frac{6.67\times 10^{-34}\times 3\times 10^{8}}{6.45\times 10^{-7}}=3.1023\times 10^{-15}j

The frequency of the green light is given by:

f=5.80\times 10^{14}s^{-1}

So energy E=h\nu =6.67\times 10^{-34}\times 5.80\times 10^{14}=3.8686\times 10^{-19}j

So green light have high energy

8 0
3 years ago
Which example best illustrates the transfer of energy between two waves?
FromTheMoon [43]

Answer:

A) A buoy rises in the water as a boat speeds past.

Explanation:

The passing boat transfers energy in the form of a wave. Other options illustrate other physics concepts like gravity (falling egg) or Newton's law (for every action, there is an equal and opposite reaction).

7 0
3 years ago
A janitor standing on the top floor of a building wishes to determine the depth of the elevator shaft. They drop a rock from res
Bumek [7]

Answer:

Part a)

H = 26.8 m

Part b)

error = 7.18 %

Explanation:

Part a)

As the stone is dropped from height H then time taken by it to hit the floor is given as

t_1 = \sqrt{\frac{2H}{g}}

now the sound will come back to the observer in the time

t_2 = \frac{H}{v}

so we will have

t_1 + t_2 = 2.42

\sqrt{\frac{2H}{g}} + \frac{H}{v} = 2.42

so we have

\sqrt{\frac{2H}{9.81}} + \frac{H}{336} = 2.42

solve above equation for H

H = 26.8 m

Part b)

If sound reflection part is ignored then in that case

H = \frac{1}{2}gt^2

H = \frac{1}{2}(9.81)(2.42^2)

H = 28.7 m

so here percentage error in height calculation is given as

percentage = \frac{28.7 - 26.8}{26.8} \times 100

percentage = 7.18

5 0
3 years ago
Other questions:
  • The number of significant figures in 10001 is<br> two.<br> five.<br> three.<br> six.
    15·2 answers
  • How does density of the medium affect the speed of a wave?
    6·1 answer
  • Water is boiling in a clear pot, as shown in the picture. Which takes place as water cycles from the bottom of the pot toward th
    10·2 answers
  • A vehicle has an initial velocity of 30 meters per second. 30 seconds later it is traveling at a velocity of 60 meters per secon
    10·2 answers
  • A car with a mass of 860 kg sits at the top of a 32 meter high hill. Describe the transformations between potential and kinetic
    11·1 answer
  • Which of the following makes a good electrical insulator? Why? a.Glass, because it is slippery and smooth. b. Glass, copper and
    11·1 answer
  • Is it possible for two pieces of the same metal to have different recrystallization temperatures? Is it possible for recrystalli
    12·1 answer
  • A high-speed flywheel in a motor is spinning at 450 rpm (revolutions per minute) when a power failure suddenly occurs. The flywh
    9·1 answer
  • Two concentric current loops lie in the same plane. The smaller loop has a radius of 2.7cm and a current of 12 A. The bigger loo
    13·2 answers
  • 2. Kevin works as a janitor, and he is pushing a fully-
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!