Answer:
a = -47.93 m/s²
Explanation:
given,
speed of particle in positive x-direction, u = 97 m/s
speed of particle in opposite direction, v = -42 m/s
time = 2.9 s
average acceleration, a = ?
now,
a = -47.93 m/s²
Hence, the average acceleration is equal to -47.93 m/s²
Answer:
Electric potential energy at the negative terminal:
Explanation:
When a particle with charge travels across a potential difference , then its change in electric potential energy is
In this problem, we know that:
The particle is an electron, so its charge is
We also know that the positive terminal is at potential
While the negative terminal is at potential
Therefore, the potential difference (final minus initial) is
So, the change in potential energy of the electron is
This means that the electron when it is at the negative terminal has of energy more than when it is at the positive terminal.
Since the potential at the positive terminal is 0, this means that the electric potential energy of the electron at the negative end is
When the object slides across the rough surface some of its potential energy will be lost to friction.
<h3>Conservation of mechanical energy</h3>
The law of conservation of mechanical energy states that the total mechanical energy of an isolated system is always constant.
M.A = P.E + K.E
When the object slides across the rough surface, some of the potential energy of the object will be converted into kinetic energy while the remaining potential energy will be converted into thermal energy due to frictional force of the rough surface.
P.E = K.E + thermal energy
Learn more about conservation of energy here: brainly.com/question/166559
Answer:
A black hole is a place in space where gravity pulls so much that even light can not get out
Electrons on the outermost shell/energy level