If an object is placed between the focal point and twice the focal length of a convex lens, which type of image will be produced
1 answer:
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Answer:
The speed of the animals is 1.64m/s.
Explanation:
Let us work with variables and call the mass of the two rats and
, and the length of the rod
.
Using the law of conservation of energy, which says the potential energies of the rats must equal their kinetic energies, we know that when the rod swings to the vertical position,
,
solving for , we get:
Putting in the values for ,
,
, and
we get:
Therefore, as the rod swings through the vertical position , the speed of the rats is 1.64 m/s.
Answer:
Approximately .
Explanation:
It is given that and
are connected in a circuit in parallel.
Assume that this circuit is powered with a direct current power supply of voltage .
Since and
are connected in parallel, the voltage across the two resistors would both be
. Thus, the current going through the two resistors would be
and
, respectively.
Also because the two resistors are connected in parallel, the total current in this circuit would be the sum of the current in each resistor: .
In other words, if the voltage across this circuit is , the total current in this circuit would be
. The (equivalent) resistance
of this circuit would be:
.
Given that and
:
.