Batteries transform ______________ energy into mechanical energy.
2 answers:
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b) between poles M1 and M2
Explanation:
From the expression, we can deduce that r is the distance between two magnetic poles M1 and M2.
The law of attraction between two magnetic poles states that:
<em> the force of attraction or repulsion between two magnetic poles is a function of the product of the strength of the magnetic poles and the square of the distance between the pole</em>s
Mathematically:
FM = K
here r is the distance between the poles
FM is the magnetic force between the poles
M1 is the strength of the first magnetic pole
M2 is the strength of the second pole
K is the magnetic field constant
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Answer:
Power is the rate at which energy is transformed.
The SI unit of power is the watt.
Power is the rate at which work is done.
Explanation:
In this question we have to choose the statements related to Power that are True.
In this sense, Power is the speed with which work
is done. Its unit is Watts (
), being
.
Power is mathematically expressed as:
Where is the time during which work
is performed.
On the other hand, the Work done by a Force
refers to the release of potential energy from a body that is moved by the application of that force to overcome a resistance along a path. It is a scalar magnitude, and its unit in the International System of Units is the Joule (like energy). Therefore, 1 Joule is the work done by a force of 1 Newton when moving an object, in the direction of the force, along 1 meter (
).
So, according to this explanation, the true statements are:
Power is the rate at which energy is transformed.
The SI unit of power is the watt.
Power is the rate at which work is done.