Which best describes the electric field created by a positive charge?
2 answers:
Answer:
Its rays point away from the charge.
Explanation:
The electric field due to a point charge is given by :
Where
k is the electrostatic constant
q is the point charge
r is the distance from charge particle
It is clear that the electric field is directly proportional to the charge and inversely proportional to the distance from charge particle.
There are two types of charged particle i.e. negative and positive charge. For a positive charge, the direction of electric field points away from it and for a negative charge, the direction of electric field points towards it.
Hence, the correct option is (c).
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d. Maintain constant velocity
Explanation:
A constant velocity leads to no acceleration.
Acceleration is defined as the change in velocity with time:
Acceleration =
If there is no change in velocity i.e constant velocity.
At constant velocity, the change in velocity is 0.
If we put zero in the equation above, we will obtain an acceleration value of 0.
Learn more:
Acceleration brainly.com/question/3820012
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Answer:
Frequency of the light will be equal to
Explanation:
We have given wavelength of the light
Velocity of light is equal to
We have to find the frequency of light
We know that velocity is equal to , here
is wavelength and f is frequency of light
So frequency of light will be equal to
So frequency of the light will be equal to
Answer:
The minimum speed when she leave the ground is 6.10 m/s.
Explanation:
Given that,
Horizontal velocity = 1.4 m/s
Height = 1.8 m
We need to calculate the minimum speed must she leave the ground
Using conservation of energy
Put the value into the formula
Hence, The minimum speed when she leave the ground is 6.10 m/s.