Answer:
As a result, if the field lines are close together (that is, the field line density is greater), this indicates that the magnitude of the field is large at that point. If the field lines are far apart at the cross-section, this indicates the magnitude of the field is small. (Figure) shows the idea.
Explanation:
Answer:
virtual
Explanation:
because the light rays do not meet at the image position
the other options are definitely wrong because
characteristics of a plane mirror images are that,
it is the same size as the object
it is upright
The only thing you need to know in order to solve this task is that <span>plank length (which is force x), should equal the increase in potential energy, so what we have now : (mass)* g * (height).
It has to look like that: </span>
<span>F * 3.0 = 150 x 9.81 x 1.20
Then solve for F, the result should be in newtones = 588N
Do hope it makes sense.</span>
Answer:
0.00073
Explanation:
= Fraction of atoms of the element in the excited state
= Fraction of states
T = Temperature = 4471 K
h = Planck's constant =
= Boltzmann constant =
= Wavelength = 407.3 nm
We have the relation
Change in energy is given by
The fraction of atoms of the element in the excited state is 0.00073
That's true.
Magnets attract some metals such as iron, nickel, etc.
Hope this helps~