Answer:2 amperes
Explanation:
Voltage=120v
Total resistance=15+15+30
Total resistance=60 ohms
Current=voltage ➗ resistance
Current=120 ➗ 60
Current=2 amperes
Answer:
1) move away from the windows.
When abrupt changes in pressure (produced by the hurricane) affect the windows, they can "explode" and be a serious danger for the people.
2) Go to the lowest level of the building.
Is safer than the upper levels because the lower levels suffer less from the strength of the hurricane (being closer to the ground increases the structural resistance), make sure that you have everything you may need in case of an emergency.
Answer:
A. Time, t = 4.35s
B. Height of its fall, S = 92.72m
Explanation:
Vo = 0 m/s
Vi = 0.46h m/s
S = h m
a = 9.81 m/s2
To calculate the time taken, we need to get the value of the distance, h.
Using the equations of motion,
Vi^2 = Vo^2 + 2aS
Where Vi = final velocity
Vo = initial velocity
a = acceleration due to gravity
S = height of its fall
(0.46h)^2 = 0 + 2*9.81*h
0.2116h^2 = 19.62h
h = 19.62/0.1648
= 92.722 m
To calculate the time,
S = Vo*t +(1/2)*a*t^2
92.772 = 0 + (1/2)*9.81*t^2
t^2 = 185.44/9.81
= 18.904
t = sqrt(18.904)
= 4.348 s
Answer:
The average power is 15.26 W.
Explanation:
Given that,
Force = 29 N
Radius = 0.27 m
Time = 1.9 s
We need to calculate the power
Using formula of power
![P=\dfrac{W}{t}](https://tex.z-dn.net/?f=P%3D%5Cdfrac%7BW%7D%7Bt%7D)
![P=\dfrac{F\cos\theta \times s}{t}](https://tex.z-dn.net/?f=P%3D%5Cdfrac%7BF%5Ccos%5Ctheta%20%5Ctimes%20s%7D%7Bt%7D)
![P=\dfrac{F\cos\theta\times 2\pi r}{t}](https://tex.z-dn.net/?f=P%3D%5Cdfrac%7BF%5Ccos%5Ctheta%5Ctimes%202%5Cpi%20r%7D%7Bt%7D)
Here, ![\theta=0^{\circ}](https://tex.z-dn.net/?f=%5Ctheta%3D0%5E%7B%5Ccirc%7D)
Where, F = force
t = time
r = radius
Put the value into the formula
![P=\dfrac{29\cos0\times2\pi\times0.27}{1.9}](https://tex.z-dn.net/?f=P%3D%5Cdfrac%7B29%5Ccos0%5Ctimes2%5Cpi%5Ctimes0.27%7D%7B1.9%7D)
![P=15.26\ W](https://tex.z-dn.net/?f=P%3D15.26%5C%20W)
Hence, The average power is 15.26 W.
Answer:
Waves and surface currents are wind-generated. The atmosphere pushes the ocean surface along. But as the ocean moves, heat is redistributed and eventually tossed back into the atmosphere. The exchange of heat influences the pressure field in the atmosphere, which modifies the wind field.