Choose the correct statement: Group of answer choices A proton tends to go from a region of low potential to a region of high po
1 answer:
Answer:
TRUE. The potential of a negatively charged conductor must be negative
Explanation:
Let's examine each statement
The positively charged proton moves in the direction of the electric field, the power and the electric field are related
ΔU = - E ds
- U₀ = - E ds
E = (U₀ –U_{f}) / s
To have a positive electric field the initial potential must be greater than the final potential, so the proton moves from a greater potential to a smaller one.
This statement is FALSE
The second statement
The potential has the same sign as the elective charge.
This statement is TRUE
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Answer:
The value is
Explanation:
From the question we are told that
The focal length of the objective is
The focal length of the eyepiece is
The tube length is
Generally the magnitude of the overall magnification is mathematically represented as
Where is the objective magnification which is mathematically represented as
=>
=>
is the eyepiece magnification which is mathematically evaluated as
So
Solution :
Let the positive is along the East and the positive
direction is along the north.
Given :
Mass of the Tesla car, =
Mass of the Ford car,
Now let the initial velocity of Tesla car in the south direction be =
The initial momentum of Tesla car,
Let the initial velocity of Ford car in the east direction be =
So the initial momentum of the Ford car is
Therefore, the initial velocity of both the cars is
Now the final velocity of both the cars is
So the vector form is :
Therefore the momentum after the accident is
According to the law of conservation of momentum, we know
From,
We get,
Therefore the speed of Tesla car before collision = 25.4 m/s
The speed of ford car before collision = 24.4 m/s
