Answer:
2 seconds
Explanation:
The function of height is given in form of time. For maximum height, we need to use the concept of maxima and minima of differentiation.
Differentiate with respect to t on both the sides, we get
For maxima and minima, put the value of dh / dt is equal to zero. we get
- 32 t + 64 = 0
t = 2 second
Thus, the arrow reaches at maximum height after 2 seconds.
Complete Question:
What is the power in a circuit that has a current of 12 amps and a resistance of 100 ohms?
Answer:
D. 14,400 watts
Explanation:
The electrical power of an electric circuit can be defined as a measure of the rate at which energy is either produced or absorbed in the circuit.
Mathematically, electrical power is given by the formula;
This ultimately implies that, the quantity (current times voltage ) is electrical power and it is measured (S.I units) in Watt (W).
<u>Given the following data;</u>
To find the power in the circuit, we would use the following formula;
Power = I²R
Where;
Power = 12² * 100
Power = 144 * 100
<em>Power = 144,000 Watts</em>
Answer:
Velocity v= 12.25
Explanation:
The first rock dropped give the distance Y in meters
Now the motion of the second rock the time change so to know the velocity