Answer:
a) Instantaneous rate at which the force does work on the object = -6 W
b)
Explanation:
a) Given that
and
Instantaneous rate at which the force does work on the object is called power.
Power is the dot product of force and velocity.
Instantaneous rate at which the force does work on the object = -6 W
b) Here given that
Power = -12 W
Answer: 24
Explanation:
Given the following equation:
Where is the number of mushrooms in a pizza and
the number of pizzas.
If we know the restaurant will make 8 pizzas (), then:
This is the needed number of mushrooms for 8 pizzas
To solve this problem it is necessary to apply the concepts related to Current and Load.
The current in terms of the charge of an electron can be expressed as
Where,
q = Charge
t = time
At the same time the Charge is the amount of electrons multiplied by the amount of these, that is
q = ne
Replacing in the first equation we have to
Clearing n,
Here the time is one second then
Therefore the number of electrons per second are passing any cross sectional area of the wire are