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
True [87]
2 years ago
11

Two sticks are suspended on silk thread, electrified by charges of opposite sign. Is there a magnetic field around them? An elec

tric field?
Physics
1 answer:
IRINA_888 [86]2 years ago
5 0

ANSWER and EXPLANATION

We want to identify if there will be an electric field and a magnetic field around the two sticks electrified by charges of opposite signs.

An electric field is a physical field that surrounds electrically charged particles and exerts a force on other charged particles in the surrounding.

This implies that the presence of electric charges on both sticks generates electric fields on them. Since the two charges are opposite, the electric force acting on them will be attractive.

Hence, there is an electric field.

A stationary charged object produces an electric field, as explained above, but will only produce a magnetic field if there is a motion of the object.

Hence, except the two sticks are caused to move, there will be no magnetic field around them.

You might be interested in
A tortoise can move with a speed of 10.0cm/s, while a rabbit can move 10 times faster. In a race, both of them started at the sa
Xelga [282]

Answer:

C. 199.9 s

Explanation:

3 minutes = 3×60 = 180 seconds.

the turtle moves in that time 180×10 = 1800 cm.

in other words the rabbit gave it that much head-start (it does not matter if that was at the begin of in the middle of the race).

the rabbit moves with 10×10cm/s = 100cm/s.

the rabbit needs therefore 1800/100 = 18 seconds for the

1800 cm.

at that time the turtle has added another 18×10 = 180 cm.

for which the rabbit needs 180/100 = 1.8 seconds.

during that time the turtle has added 1.8×10 = 18 cm.

and so on.

in formal mathematics this looks like this :

1800 + 10x = 100x

after x seconds of the rabbit running both will have run the same distance, and it is a tie.

1800 = 90x

x = 20 seconds

so, at that point, the rabbit was actively running for 20 seconds and raced 20×100 = 2000 cm

and the turtle was actively running for 180 + 20 = 200 seconds, and also covered 200×10 = 2000 cm.

but our question tells us that the turtle won by 10 cm.

so, the race was over a little bit before these 200 seconds (for a tie).

this means, the rabbit could not run the last 10 cm for the tie (because the race was over and the turtle had won).

the rabbit would have needed 10/100 seconds for these 10 cm.

as speed = distance/time

we need to divide distance by speed

distance/1 / distance/time

to get time.

so,

10cm/1 / 100cm/s = 10s/100 = 1/10 s

so, we need to deduct this 1/10 s from the 200 seconds of the turtle (and also from the 20 seconds for the rabbit).

the race lasted of course the whole time the turtle was running (while the rabbit was resting, officially still participating in the race with speed 0 for 3 minutes).

and so, the race was 199.9 s long.

8 0
2 years ago
A car traveling at a constant speed travels 175 miles in 4 hours. How many feet will the car travel in 10 minutes?
8_murik_8 [283]
The answer would be 70. I got my answer from www.iun.edu
8 0
3 years ago
The principle that describes the force on a charge in a magnetic field was named for who
Marina CMI [18]

The principle that describes the force on a charge in a magnetic field was named for Hendrik Lorentz, and the principle is named as Lorentz force.

Hendrik Antoon Lorentz<span> <span>(18 July 1853 – 4 February 1928) was a Dutch </span></span>physicist<span> <span>who shared the 1902 </span></span>Nobel Prize in Physics<span> <span>with </span></span>Pieter Zeeman<span> <span>for the discovery and theoretical explanation of the </span></span>Zeeman effect<span>.<span> </span></span>

8 0
3 years ago
What do u do if ur baby sitting and the kid falls down the stairs and breaks his nose. Should I tell the parents or no? What do
igor_vitrenko [27]

Answer:

Call the parent's for the safety of the baby

Explanation:

5 0
4 years ago
Read 2 more answers
A toy cannon tosses a rubber ball straight upward. A motion sensor measures the speed of the ball as it leaves the cannon. Using
mezya [45]

Answer:

With this information is not possible to calculate the mass.

Explanation:

This is a characteristic problem of energy conservation, where kinetic energy becomes potential energy. For this particular problem, we have the initial speed as input data. The moment the ball comes out of the cannon we have the maximum kinetic energy, as the ball goes up the ball will gain more potential energy as the ball loses kinetic energy, until the moment the ball reaches the maximum height. At the maximum height point, the ball will have its maximum potential energy while its kinetic energy is zero. In other words, all the kinetic energy that was, in the beginning, was transformed into potential energy.

E_{p}=E_{k}\\m*g*h=0.5*m*v^2

In the above equation the masses are canceled and we can determine the maximum height, by means of the initial speed.

h=\frac{0.5*v^2}{g} [m]

But the mass cannot be determined, since it would be necessary to know the value of the energy, in order to determine the value of the mass.

3 0
3 years ago
Other questions:
  • Energy waves moving through the air
    11·2 answers
  • During light activity, a 70-kg person may generate 200 kcal
    11·1 answer
  • Two identical batteries have the same internal resistance. Battery 1 is connected to a resistor R1 and battery 2 to a resistor R
    8·1 answer
  • a. A nucleus is made up of protons and neutrons. Protons have positive charges and neutrons have no charge. The strong nuclear f
    15·2 answers
  • A test charge of +3 �C is at a point P where an external electric field is directed to the right and has a magnitude of 4 106 N/
    9·1 answer
  • A student pushes a 2.85 kg cart causing it to accelerate at a rate of 4.9 m/s squared .What amount of force must the student hav
    11·1 answer
  • A force of 10 N pressing on an area of 2m2. Calculate the pressure please answer fast it’s a test rn
    9·2 answers
  • The speed of light is 3 x 10^8 m/s. If its frequency is 4.11 x 10^4 Hz, what is its wavelength?
    14·1 answer
  • Like surface water and groundwater, glaciers shape the land through erosion and deposition. Fill in the blanks to complete each
    13·2 answers
  • the sun is one hundred and fifty million kilometers away from earth write this in scientific notation​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!