If this is about simple machines the answer is: Inclined plane
To solve this problem it is necessary to apply the concepts related to energy as a function of voltage, load and force, and the definition of Force given by Newton in his second law.
By definition we know that force is equal to
F= ma
Where,
m = mass (at this case of an electron)
a = Acceleration
But we also know that the Energy of an electric object is given by two similar definitions.
Where,
F= Force
q = Charge of proton/electron
V = Voltage
d = Distance
Equating and rearrange for F,
The two concepts of force can be related to each other, then
Acceleration would be,
Replacing with our values we have that the acceleration is
Now through the cinematic equations of motion we know that,
Where,
Final velocity
Initial velocity
a = Acceleration
x = Displacement
Re-arrange to find v_f,
Therefore the electron's speed when it is 0.1 cm from the negative plate is
The electrons in an atom exist in various energy levels. When an electron moves from a lower energy level to a higher energy level, energy is absorbed by the atom. When an electron moves from a higher to a lower energy level, energy is released (often as light).
Answer:
Answer should be (B)
Explanation:
If the forces on an object are balanced (or if there are no forces acting on it), this is what happens: a stationary object stays still. a moving object continues to move at the same speed and in the same direction.
ALSO: forces acting upon an object are balanced, then the object will maintain its state of motion. To maintain the state of motion is to keep the current speed and direction. But if the forces are not balanced, the object will change its state of motion.