Frequency = (speed) / (wavelength) = 20 / 0.5 = 40 per second = 40 Hz.
An equation showing the relationship between the THREE forces is R -W +F= 0
<h3>What is moment of force?</h3>
The equal and opposite force acting at a point from the axis of rotation is called the moment of force.
M = F x r
Given is a wheelbarrow and stones with a total mass of 43 kg. The wheelbarrow is in equilibrium with two of the three forces acting on it
Taking moment about the wheel, we get
-43x 9.81 x 0.6 + F x 1.5 =0
F = 43 x 0.6/1.5
F = 168.732 N (upward force)
Summation of forces in y direction is zero.
R -W +F= 0
Where, R is the normal force, W is the Weight force and F is the applied force.
Thus, this is the equation representing all the three forces acting on wheelbarrow.
Learn more about moment of force.
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Electromagnetic ionizing radiation emitted<span> from the nucleus of an atom when it de-excites. Gamma </span>rays<span> are best thought of as "photons," i.e., packets of pure energy. The energy of a gamma </span>ray<span> is usually between 50 and 2000 keV (0.05 to 2 MeV). Gamma </span>rays<span> can be </span>emitted during radioactive decay.
Answer:
C. 0.25J
Explanation:
Energy stored in the magnetic field of the inductor is expressed as E = 1/2LI² where;
L is the inductance
I is the current flowing in the inductor
Given parameters
L = 20mH = 20×10^-3H
I = 5A
Required
Energy stored in the magnetic field.
E = 1/2 × 20×10^-3 × 5²
E = 1/2 × 20×10^-3 × 25
E = 10×10^-3 × 25
E = 0.01 × 25
E = 0.25Joules.
Hence the energy stored in the magnetic field of this inductor is 0.25Joules
