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Author Question: A water pump draws about 4.4 A when connected to 240 V. What is the cost (with electrical energy at ... (Read 35 times)

fnuegbu

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on: Jul 28, 2018
A water pump draws about 4.4 A when connected to 240 V. What is the cost (with electrical energy at 9 cents per kWh) of running the pump for 10 h?
 a. 82 cents
  c. 95 cents
  b. 8.0 cents
  d. 15 cents

Question 2

A ventilation fan with a moment of inertia of 0.034 kgm2 has a net torque of 0.11 Nm applied to it. If it starts from rest, what angular momentum will it have 9.0 s later?
 a. 0.88 kgm2/s
  c. 2.0 kgm2/s
  b. 0.99 kgm2/s
  d. 3.25 kgm2/s


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swimkari

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Reply #1 on: Jul 28, 2018
Answer to Question 1

C

Answer to Question 2

B


fnuegbu

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Reply 2 on: Jul 28, 2018
Great answer, keep it coming :)

aliotak

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Reply 3 on: Yesterday
Wow, this really help

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