For the squeegee to pass by another window washer working at a height of 20 feet, it will take the squeegee 1.6 seconds.
<h3>Squeegee passage:</h3>
Using this model: h(t)= h0-16t²
Where:
h(t)=20
Let plug in the formula
60-16t²=20
-16t²=-40
t²=10÷4
t=±√10÷4
t=±√10÷2
t=3.16÷2
t=1.58 seconds
t=1.6 seconds (Approximately)
Inconclusion for the squeegee to pass by another window washer working at a height of 20 feet, it will take the squeegee 1.6 seconds.
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Answer:
The answer is C or the third one
Step-by-step explanation:
Answer: 73.33A
Step-by-step explanation:
Resistance (R)= 3.0 kN
Voltage (V)= 220 volts
Current (I)= Unknown
The formula to calculate the current will be:
Current = Voltage / Resistance
Current = 220 / 3.0
Current = 73.33 A
Therefore, the current needed to operate the electric fan is 73.33.
Answer:
It just depends on the sign before the brackets. If none or "+", it is positive. If it is negative,it will have "-".
Answer: 0.126
Step-by-step explanation: