Answer:
for a cell to produce a current the cell electrodes of the cell must have a potential difference option A is the correct answer
"Valence" electrons or the free electrons
<u>Explanation:</u>
Electrical conductivity can be defined as the property of the substance to conduct electricity, heat etc through it. This conductivity is caused due to the migration of particles which are electrically charged within the atomic lattice of the substance.
The outermost electrons or the electrons in valence shell are the main cause behind the conductivity property exhibited by any substance. Higher the number of electrons in outer shell, higher the conductivity.
Since these electrons are in the outermost shell, they can move easily. Under an impact of applied heat, charge these electrons migrate through the atomic lattice and thus conducts electricity, heat as the case may be.
Answer:
The time taken is 6.7 min
Explanation:
Using the linear momentum conservation theorem, we have:
when she was 60.4m from the shuttle, she has zero speed, so the initial velocity is zero.
That is 0.15m/s in the opposite direction of the camera.
the time taken to get to the shuttle is given by:
A body is said to be in motion when it's position changes continuously.
Answer:
The answer is 14.8 m/s.
Explanation:
Substituting 22.1 revolutions for f, 6.4 meters for R in Relation between velocity and frequency of motion.
V = (2π) ( 22.1) (6.4)
= ( 2π) ( 22.1 rev/ min) ( 1min÷ 60 s )(6.4)
= 14.8 m/s.
