current is passed through two parallel conductors in the same direction. If the conductors are placed near each other,they will
1 answer:
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Answer:
4.433 kW
Explanation:
Suppose the flow rate is the same at the inlet and outlet at 57 m3/hr.
Since 1 hour = 60 minutes = 3600 seconds we can calculate the flowrate in m3/s
As we are neglecting loss from friction and elevations changed, the power delivered by the pump is the product of the change in pressure and the flow rate
Answer:
- The maximum height reached by the ball is 45.92 m
- Time taken to fall down to half of its height is 2.2 s
Explanation:
Given;
initial velocity of the ball, u = 30 m/s
final velocity of the ball at the highest point, v = 0
The maximum height reached by the ball is calculated as;
v² = u² - 2gh
where;
h is the maximum height reached by the ball
0 = 30² - (2 x 9.8)h
19.6h = 900
h = 900 / 19.6
h = 45.92 m
Time taken to fall to half of its height is calculated as;
when falling down, the final velocity v becomes the initial velocity = 0.
Apply the following kinematic equation;
h = ut + ¹/₂gt²
h = 0 + ¹/₂gt²
h = ¹/₂gt²
where;
h = 45.92 m is the maximum height reached
half of h = 45.92 / 2 = 22.96 m
22.96 = ¹/₂gt²