Atoms can gain or lose electrons. When an atom gains an electron, energy is given off and is known as the electron affinity. Electron affinity is defined as the energy released when an electron is added to a gaseous atom or ion.
Answer:
Newton, absolute unit of force in the International System of Units (SI units), abbreviated N. It is defined as that force necessary to provide a mass of one kilogram with an acceleration of one metre per second per second.
The charge on each coin is equal to
Given the following data:
Force = 2.0 Newton
Radius = 1.5 meters
To determine the charge on each coin, we would apply the law of electrostatic forces:
Mathematically, the law of electrostatic forces is given by the formula:
Note: (since the coin carry identical electric charges).
Therefore, the formula becomes:
Making q the subject of formula, we have:
Substituting the given parameters into the formula, we have;
Answer:
There are 7 periods in the periodic table. Remember periods are the rows.
Brainliest always helps!!!
Answer:
t = 0.4 s
Explanation:
Given that,
The speed of sound on steel is about 5000 m/s.
A friend of yours, 2000 m away, strikes a railroad track which you have your ear on.
We need to find the time after she strikes it will the sound arrive. Let the time is t. We know that,
Speed = distance/time
So,
So, the required time is 0.4 seconds.