Answer:
Time= 6.12*10^4s
mass flow rate m=0.98kg/s
Explanation:
Given
Volume= 60m^3
diamter= 2.5cm= 0.025m
radius= 0.0125m
area A= πr^2
area A= 3.142*0.0125^2
area A= 4.9*10^-4m^2
the velocity of the flow 2m/s
<u>volume flow rate </u>
V=vA
V=2* 4.9*10^-4
V=9.82*10^-4 m^3/s
<u>Time taken to fill the pool</u>
time= volume/volume flow rate
time= 60/9.82*10^-4
time= 6.12*10^4s
<u>Mass flow rate </u>
m= density *volume flow rate
Assuming the density of water to be 997kg/m^3
m= 997*9.82*10^-4
m=0.98kg/s
Answer:
2000 W
Explanation:
First of all, we need to find the output voltage in the transformer, by using the transformer equation:

where here we have
V1 = 200 V is the voltage in the primary coil
V2 is the voltage in the secondary coil
N1 = 250 is the number of turns in the primary coil
N2 = 500 is the number of turns in the secondary coil
Solving for V2,

Now we can find the power output, which is given by
P = VI
where
V = 400 V is the output voltage
I = 5 A is the output current
Substituting,
P = (400 V)(5 A) = 2,000 W
Answer:
Explanation: please see attached file I attached the answer to your question.
Answer:
The plane's acceleration is 33.33 m/s²
Explanation:
The following equation relates velocity, v and acceleration of a moving body;
v = u + a·t
Where:
v = The final velocity of the body after time, t = 180 km/min
u = The initial velocity of the body just before the counting of the time = 0 m/s
a = The acceleration of the body during time, t = Required
t = The time of the motion = 1.5 minutes = 1.5×60 seconds = 90 s
v = 180 km/min = 180 km/min × 1000 m/km × 1/60 min/s = 3000 m/s
∴ 3000 m/s = 0 m/s + a × 90

Therefore, the plane's acceleration = 33.33 m/s².