Answer:
0.0006091222 m
Explanation:
q = Charge = 42 pC
V = Voltage = 620 V
= Permittivity of free space =
Electric potential is given by (at r = R)
The radius of the drop is 0.0006091222 m
To solve this problem we will apply the concepts related to gravitational potential energy.
This can be defined as the product between mass, gravity and body height.
Mathematically it can be expressed as
Therefore the change in the internal energy of the system is 255.78
The force exerted by Earth plays the role of centripetal force.
Potential energy E = mgh
m mass
g gravitational constant
mg = weight (in Newton)
h = height (in meter)
Answer: Option C
C) accelerated vertical motion and constant horizontal motion.
Explanation:
If there is no air resistance then during the projectile movement the only force that causes an acceleration is the gravitational force.
We know that this force produces an acceleration of 9.8 m / s ^ 2 in the projectile.
As the gravitational force attracts the object towards the earth, then the acceleration that this force produces is always in the vertical direction. In the horizontal direction the object is not accelerated (because there is no air resistance).
Therefore the correct answer is option C.
"accelerated vertical motion and constant horizontal motion".