Answer:
1.35 V
Explanation:
Given:
Capacitance of the capacitor (C) = 1.3 μF =
Frequency (f) = 3.9 kHz= 3.9 × 1000 Hz = 3900 Hz [1 kHz = 1000 Hz]
Current flowing in the circuit (I) = 43 mA = 0.043 A [1 mA = 0.001 A]
Now, as only capacitor is there in the circuit, the impedance of the circuit is equal to the reactance of the capacitor.
So,
The reactance of the capacitor is given as:
Plug in the values given and solve for . This gives,
Therefore, the impedance is,
Now, the voltage needed to create the given current is obtained using the formula from Ohm's law and is given as:
Therefore, the voltage needed to create a current of 43 mA is 1.35 V.
Answer:400m
Explanation: x=20⋅10+ 4.10^2/2 =400m
To solve this problem it is necessary to apply the concepts related to Work, Kinetic energy in springs and the conservation of Energy.
By definition work in a body is defined by
Where,
F = Force
d = Distance
On the other hand we have that
Where,
k = Spring constant
x = Displacement
Since it is an inclined plane, we can intuit that the component of the distance that allows the calculation of the work is the opposite of the angle (vertical), so
From the second equation we can calculate the displacement, then
Therefore the block come to rest when the spring has been compressed around to 11.49cm
Answer:
Option 4
Explanation:
A constellation can be defined as that region formed by the stars in such a way that the formation by the group of stars in that area appear to seem an imaginary pattern of some mythological creature, animal, god or some inanimate object formed apparently.
Thus in accordance with the above definition a constellation is a group of stars that forms some apparent pattern in the celestial sphere.