A). 6,000 Hz.
No. This is in the middle of the human hearing range. If a radio station were transmitting on this frequency, then every wire and cable in town would pick up a little of its energy, and you'd hear it on every telephone, earbud, and headphone, and it would come out of every loudspeaker.
B). 6,000,000 Hz. (6 mHz)
No. This isn't used by 'commercial' broadcasting stations, but it IS used by
foreign short-wave stations, to broadcast news, 'culture', and propaganda
into other countries.
C). 60 Hz.
No. This is the frequency of the AC that you use when you plug anything
into a wall socket. All of the electric company's power lines RADIATE a
little bit of energy at this frequency, so it wouldn't be a very smart frequency
for a radio station to try to use, since the whole country is already blanketed
with interference at this frequency.
D). 600,000 Hz (600 kHz)
Yes ! This is the "600" or "60" or "6" that's marked
near the left end of your AM radio dial.
yay !
Answer:
Fₓ = 21.9 kN
Fᵧ = 84.3 kN
T = 32.7 kN
Explanation:
Draw a free body diagram (assuming the weight of the structure is included in the 60 kN force).
There are vertical and horizontal reaction forces at A (Fᵧ and Fₓ), and a tension force T at B pulling down along the rope.
The length of BC is √(2.7² + 3²) = √16.29. Using similar triangles, the vertical and horizontal components of the tension force are:
Tᵧ = 3 T / √16.29 ≈ 0.743 T
Tₓ = 2.7 T / √16.29 ≈ 0.669 T
Sum of moments about A in the counterclockwise direction:
∑τ = Iα
Tᵧ (1 m) + Tₓ (3 m) − 60 kN (1 m) − 30 kNm = 0
Tᵧ + 3 Tₓ = 90 kN
0.743 T + 3 (0.669 T) = 90 kN
2.750 T = 90 kN
T = 32.7 kN
Sum of forces in the +x direction:
∑F = ma
Fₓ − Tₓ = 0
Fₓ = Tₓ
Fₓ = 0.669 T
Fₓ = 21.9 kN
Sum of forces in the +y direction:
∑F = ma
Fᵧ − Tᵧ − 60 kN= 0
Fᵧ = Tᵧ + 60 kN
Fᵧ = 0.743 T + 60 kN
Fᵧ = 84.3 kN
Answer: hMMMMmMmM
Explanation: It depends on the size and how fast the 2 objects were already going and by this answer i think the speed would have been around 140mph
The three main domains of chilhood development are physical, cognitive , and psychosocial
The intensity of the microwave is 10.09 × 10⁵ W/m².
The unit of magnetic induction is the tesla (T). The magnetizing force, which induces the lines of force through a material, is called the field intensity, H (or H-field), and by convention has the units ampere per meter (A m−1) .
The portion of a material's magnetic field that results from an external current and is not intrinsic to the material itself is known as the magnetic field strength, also known as magnetic intensity or magnetic field intensity. It is measured in amperes per meter and represented as the vector H.
Magnetic Field, B = 9.2 × 10⁻⁵ T
![= \frac{(2.998*10^8 m/s) (9.2 * 10^-^5 T)^2}{2 ( 4\pi * 10^-^7)}](https://tex.z-dn.net/?f=%3D%20%5Cfrac%7B%282.998%2A10%5E8%20m%2Fs%29%20%289.2%20%2A%2010%5E-%5E5%20T%29%5E2%7D%7B2%20%28%204%5Cpi%20%20%2A%2010%5E-%5E7%29%7D)
× ![10^5 \frac{W}{m^2}](https://tex.z-dn.net/?f=10%5E5%20%5Cfrac%7BW%7D%7Bm%5E2%7D)
Therefore, the intensity of the microwave is 10.09 × 10⁵ W/m².
Learn more about intensity here:
brainly.com/question/24319848
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