Answer: Static electricity is the build up of an electrical charge on the surface of an object. It's called "static" because the charges remain in one area rather than moving or "flowing" to another area.
Explanation:
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Given: Velocity of light c = 3.00 x 10⁸ m/s
Frequency f = 7.65 x 10⁷/s
Required: Wavelength λ = ?
Formula: λ = c/f
λ = 3.00 x 10⁸ m/s/7.65 x 10⁷/s
λ = 3.92 m
Answer:
14.3065 rad
-36.777 J
-28.29 W
Explanation:
= Final angular momentum = 0.6 kgm²/s
= Initial angular momentum = 3 kgm²/s
I = Moment of inertia = 0.2 kgm²
Torque is given by


Initial angular speed is given by

Angular acceleration is given by


The angle is 14.3065 rad
Work done is given by

The work done on the wheel is -36.777 J
Power is given by

The power is -28.29 W