Answer:
The Magnetic field is 59.13 mT.
Explanation:
Given that,
Number of turns = 400
Radius = 1.0 cm
Frequency = 90 Hz
Emf = 4.2 V
We need to calculate the angular velocity
Using formula of angular velocity
We need to calculate the magnetic flux
Relation between magnetic flux and induced emf
Put the value into the formula
Hence, The Magnetic field is 59.13 mT.
An atom is the smallest part of an element
The energy stored in the capacitor decreases to one-half (½) of its initial value when the distance between the plates is then reduced to d/2.
<h3>The energy stored in a capacitor.</h3>
Mathematically, the energy stored in a capacitor can be calculated by using this formula:
U = ½CV² or U = q²/2C
<u>Where:</u>
- V is the potential difference.
Thus, we can logically deduce that the energy stored in the capacitor decreases to one-half (½) of its initial value when the distance between the parallel plate capacitors is reduced to d/2.
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helium group no val elect
mg is reactive when activated. when burned, very intense
pot\asssium 1 valence elect ... KCl eg
theone with H and sodium in it
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Air resistance, also called drag, acts upon a falling body by slowing the body down to thr point where it stops accelerating, and it falls at a constant speed, known as the terminal volocity of a falling object. Air resistance depends on the cross sectional area of the object, which is why the effect of air resistance on a large flat surfaced object is much greater than on a small, streamlined object.
