Hello,
Here is your answer:
The proper answer to your question is option A "Rutherford". Rutherford discovered the nucleus of a atom!
Your answer is A.
If you need anymore help feel free to ask me!
Hope this helps!
The kinetic energy of the bullet is 20.4 kJ.
<u>Explanation:</u>
Kinetic energy of a bullet will be equal to the product of mass of the bullet with the square of velocity or speed of the bullet and then the half of that product value.
But here the mass of the bullet is not given, instead the weight of the bullet is given in terms of force. So from this, we have to first find the mass of the bullet.
We know that as per Newton's second law of motion, force is directly proportional to the product of mass and acceleration. So here the acceleration will be equal to the acceleration due to gravity as it is weight of the object.
So F = mg
0.10 N = m × 9.8
So ,the mass of the bullet is 0.0102 kg.
Now, we know the mass and velocity of the bullet is given as 2000 m/s.
So,
kinetic energy =
× m × v²
kinetic energy = 0.5 × 0.0102 × 2000 × 2000 = 20.4 kJ
Thus, the kinetic energy of the bullet is 20.4 kJ.
Answer:
Vpx = 120 * cos 10 = 118.2 x-component of airplane velocity
Vpy = 120 * sin 10 = 20.8 y-component of airplane velocity
Vwx = 30 cos 260 = -5.2 x-component of wind velocity
Vwy = 30 sin 260 = -29.5 y-component of wind velocity
Vx = 118.2 - 5.2 = 113 net ground x-component of plane velocity
Vy = 20.8 - 29.5 = -8.7 net ground y-component of plane velocity
V = (Vx^2 + Vy^2)^1/2 = 113.3 m/s
Caution: Wind direction is usually stated in terms of the direction
from which the wind is blowing (a NW wind means the wind is blowing
from the Northwest). If that is the meaning of the problem here then you have to reverse the signs of the wind speed components.
This is a violation of the law of conservation of charge.
This law states that the total charge in a given system must remain constant, and charge can neither be created nor destroyed. In calculating the net charge present; however, the signs of the charge (positive and negative) are accounted for. Proof for this law was provided by Micheal Faraday in 1843.
Answer:
An isotropic medium is one such that the permittivity, ε, and permeability, μ, of the medium are uniform in all directions of the medium, the simplest instance being free space. Optical isotropy means having the same optical properties in all directions.