Answer:
You Got me im Imposter
Explanation:
a change in color
a change in frequency
a change in speed
Answer: The correct answer is - change in speed.
When light travels from one transparent medium to another transparent medium, it bends and this phenomenon is known as refraction.
It is caused due to difference in the speed of light in different medium as speed of light is slow in a denser medium (like water) whereas speed is faster in a lighter medium (like air).
The answer would be:
A. Longer wires have less resistance.
Here is why:
The statement is false because longer wires tend to have greater resistance. Look at the formula of resistance below:
ρ = resistivity
L = length
A = cross-sectional area
As you can see Length of the wire is directly proportional to the resistance, which means as the Length increases, the Resistance increases.
Answer:
A. Longer wires have less resistance.
Explanation:
Answer:
58515.9 m/s
Explanation:
We are given that
We have to find the speed (vf).
Work done by surrounding particles=W=0 Therefore, initial energy is equal to final energy.
Using the formula
Where mass of sun=
The correct answer to the question will be that the electric force between them will be decreased.
EXPLANATION:
Let us consider the charge contained by A and B are denoted as Q and Q' respectively.
Let R is the separation distance between them.
As per Coulomb's law in electrostatics, the force of attraction or repulsion between the two charge bodies A and B will be -
Coulombic force F =
Here, is the permittivity of the medium in which the charges are present.
From above, we see that electric force is inversely proportional to the square of separation distance between them.
Mathematically it can be written:
As per the question, the distance between A and B is increased.
Hence, the electric force between A and B will be decreased.