Answer:
The total power is
Explanation:
From the question we are told that
The distance is
The amplitude of the electric field is
Generally the average intensity of the electromagnetic field from the radio transmitter is mathematically represented as
Here c is the speed of light with value
is the permeability of free space with value
So
=>
Generally this intensity can also be mathematically represented as
=>
=>
=>
Answer:
θ = 73.6º
Explanation:
To solve this exercise, let's use Newton's second law. Let's set a reference system where the x-axis is parallel to the inclined plane
with trigonometry we can find the components of the weight
sin θ = Wₓ / W
cos θ= W_y / W
Wₓ = W sin θ
W_ = W cos θ
Y axis
N - W_y = 0
N = W_y
X axis
Wₓ - fr = m a
mg cos θ - fr = m a
indicate that friction is zero, fr = 0
cos θ = a / g
θ = cos⁻¹
let's calculate
θ = cos⁻¹
θ = 73.6º
Answer:
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Explanation: