Answer:
Explanation:
The electrical reactance is defined as:
Where:
So, replacing the data provided by the problem:
Now, the impedance can be calculated as:
Where:
Replacing the data:
In order to find the magnitude of the impedance we can use the next equation:
We can use Ohm's law to find the current:
Therefore the current is:
And its magnitude is:
Finally the phase angle of the current is given by:
Answer:
Explanation:
Let T be the tension
For linear motion of hoop downwards
mg -T = ma , m is mass of the hoop . a is linear acceleration of CG of hoop .
For rotational motion of hoop
Torque by tension
T x R , R is radius of hoop.
Angular acceleration be α,
Linear acceleration a = α R
So TR = I α
= I a / R
a = TR² / I
Putting this value in earlier relation
mg -T = m TR² / I
mg = T ( 1 + m R² / I )
T = mg / ( 1 + m R² / I )
mg / ( 1 + R² / k² )
Tension is less than mg or weight because denominator of the expression is more than 1.
Answer:
Because they absorb and emit heat more steadily than land, oceans help moderate temperatures in coastal areas, making winters warmer and summers cooler. Winds that blow in from across the oceans bring more rainfall and higher humidity.
Explanation:
<span>To relate or measure the by the quantity of something, not against the quantity</span>
Answer:
changes electrical energy into mechanical energy
