Explain how smart materials can be used by manufacturers to improve health and safety for children's products and goods.
1 answer:
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Answer:
Total change in energy = 31 KJ.
Explanation:
Mass m=25 kg
Height h = 1 m
Initial velocity = 0
Final velocity = 50 m/s
Energy at initial condition
Energy at final condition
So the change in energy = 31250 -250 J
The total change in energy = 31000 J
Answer:
6.004 Ω
Explanation:
For a Y- connected system given that :
Line voltage,
Line current ,
and specified that are in phase.
Hence the impedance will be pure resistive.
For Y-system
= phase voltage
= 120.08 V
Line current = Phase current
Now,
= 6.004 Ω