Answer: The correct answer is "a glass pane".
Explanation:
Insulator is the material in which the electrons does not flow. The flow of electrons constitutes the electric current. It has high resistance. Therefore, it does not conduct electric current.
For example, plastic, rubber, glass pane etc.
Conductor is the material which allows the flow of electrons. Therefore, it conducts the electric current. It has low resistance. For example, metal.
Aluminium foil, silver spoon and copper penny conduct the electric current.
Therefore, the correct option is "a glass pane".
Answer:
Distance covered by the train, x = 493.72 meters
Explanation:
It is given that,
Initial speed of the train, u = 80 km/h = 22.22 m/s
Final speed of the train, v = 0 (it stops)
Acceleration of the train, (it decelerates)
Let x is the distance the train travels from the time the conductor applies the brakes until the train comes to a complete stop. It can be calculated using the kinematic formula as :
x = 493.72 meters
So, the distance covered by the train from the time the conductor applies the brakes until the train comes to a complete stop is 493.72 meters. Hence, this is the required solution.
Answer:
Explanation:
Given that:
The conductivity of the material = 5.0 s/m
; &
The electric field intensity of the material E = 250 sin(10¹⁰ t) V/m
(a) The conduction current density
(b) Displacement current density
Recall that:
∴
(c) The frequency at which will have the same magnitude is:
By substitution
f = 90 GHz
The answer is pluto. just look it up
Answer: A train traveling initially at 16 m/s is under constant acceleration of 2 m/2. At a distance of 720m it will travel in 20 s, and the final velocity will be 56m/s.
Explanation: To find the answer, we need to know about uniformly accelerated motion.
<h3>
How to solve the problem?</h3>
- We have to find the distance travelled by the train.
- Substituting values, we get,
- We have the equation for final velocity as,
Thus, we can conclude that, a train traveling initially at 16 m/s is under constant acceleration of 2 m/2. At a distance of 720m it will travel in 20 s, and the final velocity will be 56m/s.
Learn more about the uniformly accelerated motion here:
brainly.com/question/28105762
#SPJ4