A.) It is a constant when the light is traveling in a vacuum
Explanation:
The speed of light is a constant when light is traveling in a vacuum. It is taken as 3 x 10⁸m/s in a vacuum.
- The speed of light is a constant in a vacuum.
- It measures the rate at which light is propagated in space.
- It is used for a number of scientific calculations and deductions.
- In astronomy, it is used as a basis for measuring time.
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Properties of electromagnetic waves brainly.com/question/12450147
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Answer:
The acceleration is
Explanation:
From the question we are told that
The angle which the inclined plane make with horizontal is
The frictional coefficients are and
The force acting on the crate is mathematically represented as
Here f is the net force at which the crate is sliding down the plane which is mathematically represented as
is the force due to weight which is mathematically represented as
and the force due to friction which is mathematically represented as
So
substituting values
It's either A or B because it starts off as nuclear energy.
Which body is in equilibrium?
(1) a satellite orbiting Earth in a circular orbit
. No. The forces on it are unbalanced. There's only one force acting on it ... the force of gravity, pulling it toward the center of the Earth. That's a centripetal force, and the satellite is experiencing centripetal acceleration.
(2) a ball falling freely toward the surface of Earth. No. The forces on it are unbalanced. There's only one force acting on it ... the force of gravity, pulling it toward the center of the Earth. The ball is accelerating toward the ground.
<em>
(3) a car moving with a constant speed along a straight, level road. YES.</em> We don't even need to analyze the forces, just look at the car. It's moving in a straight line, and its speed is not changing. The car's acceleration is zero ! That right there tells us that the NET force ... the sum of all forces acting on the car ... is zero. THAT's called 'equilibrium'.
(4) a projectile at the highest point in its trajectory. No. The forces on it are unbalanced. There's only one force acting on it ... the force of gravity, pulling it toward the center of the Earth. The projectile is accelerating toward the ground.
Answer with Explanation:
We are given that
Charge on proton,q=
a.We have to find the electric potential of the proton at the position of the electron.
We know that the electric potential
Where
B.Potential energy of electron,U=
Where
Charge on electron
=Charge on proton
Using the formula