Answer:
Explanation:
No difference, they will all fall at the same speed.
There is only 1 force exerting on these objects and it is gravity.
The gravitational pull is constant, and so their acceleration will be constant
Answer:
The mass of ball C is greater than the mass of ball A but less than the mass of ball B.
Explanation:
From Newton's second law, net force = mass × acceleration.
Using the data for ball B, the acceleration of gravity near the surface of the moon is:
∑F = ma
9.6 N = (6 kg) a
a = 1.6 m/s²
Therefore, the mass of ball C is:
∑F = ma
6.6 N = m (1.6 m/s²)
m = 4.1 kg
Two parallel plates having charges of equal magnitude but opposite sign are separated by 11.0 cm. Each plate has a surface charge density of 49.0 nC/m2. A proton is released from rest at the positive plate.
(a) Determine the magnitude of the electric field between the plates from the charge density.
b) Determine the potential difference between the plates.
Answer:
a
The Electric Field between the two plate is ![E = 5.536*10^3 N/C](https://tex.z-dn.net/?f=E%20%3D%205.536%2A10%5E3%20N%2FC)
b
The potential difference between the plate is V = ![609 \ Volts](https://tex.z-dn.net/?f=609%20%5C%20Volts)
Explanation:
From the we are given that
The separation between the plate is
The surface charge density is
Generally Electric field between the plate is mathematically given as
![E = \frac{\sigma }{\epsilon_0}](https://tex.z-dn.net/?f=E%20%3D%20%5Cfrac%7B%5Csigma%20%7D%7B%5Cepsilon_0%7D)
Note that
is the permitivity of free space and its value is ![8.85 *10 ^{-12} C^2 /N \cdot m^2](https://tex.z-dn.net/?f=8.85%20%2A10%20%5E%7B-12%7D%20C%5E2%20%2FN%20%5Ccdot%20m%5E2)
Now substituting values we have
![E = \frac{49*10^{-9}}{8.85*10^{-12}}](https://tex.z-dn.net/?f=E%20%3D%20%5Cfrac%7B49%2A10%5E%7B-9%7D%7D%7B8.85%2A10%5E%7B-12%7D%7D)
![5.537*10^3 N/C](https://tex.z-dn.net/?f=5.537%2A10%5E3%20N%2FC)
Generally Potential difference between the plate is mathematically given as
Where E is the electric field which is ![E = 5.536*10^3 N/C](https://tex.z-dn.net/?f=E%20%3D%205.536%2A10%5E3%20N%2FC)
Substituting value we have
V =
-- a party balloon that's full of helium and resting on the ceiling
-- a piece of styrofoam
-- a cloud of smoke
-- a bag of hot air
-- a cirrus cloud in the sky
Answer: A cold room
Explanation:
A cold room because cold air is denser.