solutions:
-50kg
-32kg
-2kg
its 50 kg because as a result of being more heavy the force that is applied to him don't makes hi go as fast as the other one
So we can now calculate the area of the wire
We need also the resistivity specific of cupper, that is:
a) We have to calculate the current that is given by,
b)
c) current density
d) Rate of thermal energy
Answer:
the net force is greatest at the points where the acceleration is maximum.
the net force is zero at the points where the object is in equilibrium.
Explanation:
net force of any object is defined by Newton's second law i.e F=ma
so when the object has zero acceleration it will experience zero net force and when the object has maximum acceleration it will experience greatest net force say when the object is in a maximum unbalanced state.
1)The P ray is directed parallel to the axis of the lens. It emerges from the lens directed toward the focal point on the side of the lens opposite the object.
2) The M ray is directed toward the midpoint of the lens. It emerges from the lens unchanged in direction.
3) The F ray is directed toward the focal point on the same side of the lens as the object. It emerges from the lens directed parallel to the lens axis.
Answer: I think it's false
because light travels slower in dense area's.