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Alex73 [517]
3 years ago
12

We have seen that an electric field must exist inside a conductor that carries a current. How is that possible in view of the fa

ct that in electrostatics we concluded that the electric field must be zero inside a conductor?
Physics
1 answer:
sleet_krkn [62]3 years ago
7 0

Answer:

Explanation:

The potential difference between one side of the wire causes the electric field inside the wire (causes the electrons to flow). However, inside the wire, it is still neutral. The electrons are just moving, the wire is not gaining or losing electrons.

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An enemy spaceship is moving toward your starfighter with a speed, as measured in your frame, of 0.400c. The enemy ship fires a
kvasek [131]

Answer:

0.859375c

31.03 seconds

Explanation:

v' = Velocity of my ship = 0.4 c

u = Velocity of rocket = 0.7 c

c = Speed of light = 3\times 10^8\ m/s

s = Distance between my ship and enemy ship = 8\times 10^6\ km

Relativistic addition of speed is given by

v=\dfrac{v'+u}{1+\dfrac{uv'}{c^2}}\\\Rightarrow v=\dfrac{0.7+0.4}{1+\dfrac{0.7c\times 0.4c}{c^2}}\\\Rightarrow v=0.859375\ c

The speed of the missile is 0.859375c

Time is given by

t=\dfrac{s}{v}\\\Rightarrow t=\dfrac{8\times 10^9}{0.859375\times 3\times 10^8}\\\Rightarrow t=31.03\ s

It will take 31.03 seconds to reach me.

6 0
3 years ago
A driver brings a car to a full stop in 2.0 s. If the car was initially
vagabundo [1.1K]

Answer:

\boxed {\boxed {\sf D. \  -11 \ m/s^2}}

Explanation:

Acceleration can be found by dividing the change in velocity by the time.

a=\frac{v_f-v_i}{t}

where Vf is the final velocity, Vi is the initial velocity, and t is the time.

Since the car came to a complete stop, it's final velocity was 0 meters per second.

The initial velocity was 22 meters per second.

The time was 2.0 seconds.

v_f=0 \ m/s\\v_i=22 \ m/s\\t= 2.0 \ s

Substitute the values into the formula.

a=\frac{0 \ m/s-22 \ m/s}{ 2.0 \s }

Subtract in the numerator first.

  • 0 m/s- 22 m/s = -22 m/s

a=\frac{-22 \ m/s}{2.0 \ s}

Divide.

a= -11 \ m/s^2

The acceleration of the car was -11 meters per square second. The negative acceleration indicates slowing down/stopping.

8 0
3 years ago
Help :((((((((((((((((((((
Ann [662]

3-6 seconds time interval is the object slowing down.

The correct option is C.

<h3>What is a time interval?</h3>

The time interval is the span of time among two specified times. To put it another way, it is the amount of time that has passed between the event's start and finish.

<h3>What are different time intervals?</h3>

The time interval is the length of time that the aim uses to gather data and determine values. The critical overview can be one or more seconds, minutes, hours, days, weeks, or months. The period must be greater than zero and positive. When providing minutes, the amount of minutes must divide evenly by 60.

To know more about Time interval visit:

brainly.com/question/28238258

#SPJ13

The complete question is -

During which time interval is the object slowing down ?

a- 8-10 seconds

b- 6-8 seconds

c- 3-6 seconds

d- 0-3 seconds

4 0
1 year ago
Where might someone with a pharmaceutical manufacturing career work?
klemol [59]

Answer:  People with careers in pharmaceutical manufacturing can expect to work in: research laboratories or manufacturing plants, and to maintain work hours during the day.

Explanation:

8 0
3 years ago
A pipe in a manufacturing plant is transporting superheated vapor at a mass flow rate of 0.3 kg/s. the pipe is 10 m long, has an
tatiyna
Draw a schematic and determine your thermal resistance values.
6 0
3 years ago
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