Answer:40 feet.
Step-by-step explanation:
Traffic sign is 8 feet.
It's shadow is 10 feet.
Traffic sign is,
8/10=0.8 times of shadow.
So, the phone is,
50*0.8
=40 feet.
Based on the given current and the given resistance, the voltage of the current is 14 + j8
<h3>How to determine the voltage of the current?</h3>
From the question, we have the following parameters
current of 4+j2 amps and a resistance of 2-j3 ohms.
This can be rewritten as:
Current (I) = 4+j2 amps
Resistance (R) = 2-j3 ohms.
The formula to calculate voltage is given as
Voltage=(current) × (resistance)
Rewrite as:
V = I * R
Substitute the known values in the above equation
V = (4 + j2) * (2 - j3)
Expand the brackets
V = 8 - j4 + j12 + 6
Collect the like ters
V = 8 + 6 - j4 + j12
Evaluate the like term
V = 14 + j8
Based on the given current and the given resistance, the voltage of the current is 14 + j8
Read more about current and voltage at:
brainly.com/question/14883923
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Answer:
Step-by-step explanation:
Given that,
The height of a cell tower, P = 70 m
The tower casts a shadow of 45 meters on the ground.
We need to find the angle of elevation of the shadow to the top of the cell tower. We can use trigonometry to find it.
Put all the values,
Hence, the angle of elevation is equal to 
.
