Answer:
Explanation:
Centripetal acceleration (a) is defined as the square of an object's velocity (V^2) divided by the distance of the object from it's point/axis of revolution (r). So:
which allows us to solve for the velocity:
A juggler throws a bowling pin straight up in the air. After the pin leaves his hand and while it is in the air, which statement
1 answer:
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The magnetic field generated by a wire carrying a current I is:
where r is the distance at which the magnetic field is measured, and
is the magnetic permeability in vacuum.
The problem says that the magnetic field at a distance r=12 cm=0.12 m from the wire must be no larger than
. Substituting these values, we can find the maximum value of the current I that the wire can carry:
where r is the distance at which the magnetic field is measured, and
The problem says that the magnetic field at a distance r=12 cm=0.12 m from the wire must be no larger than
Answer:
1752.14 tonnes per year.
Explanation:
To solve this exercise it is necessary to apply the concepts related to power consumption and power production.
By conservation of energy we know that:
Where,
Production of Power
Consumption of power
Where the production of power would be,
Where,
m = Total mass required
Energy per Kilogram
Efficiency
The problem gives us the aforementioned values under a production efficiency of 45%, that is,
Replacing the values we have,
Solving for m,
We have the mass in kilograms and the time in seconds, we need to transform this to tons per year, then,
tonnes per year.