[Answered] A 6.0-mF capacitor is attached to a 20-V power supply. How much energy is stored in the capacitor? ...

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Mr.Thesaxman

Hero Member
Posts: 514

on: Jul 28, 2018

A 6.0-mF capacitor is attached to a 20-V power supply. How much energy is stored in the capacitor?
a. 2.0 10-3 J
c. 2.0 10-4 J
b. 5.2 10-4 J
d. 1.2 10-3 J

Question 2

A 4.0-kg mass is placed at (3.0, 4.0) m, and a 7.0 kg-mass is placed at (3.0, -4.0) m. What is the moment of inertia of this system of masses about the z axis?
a. 275 kgm2
c. 250 kgm2
b. 90 kgm2
d. 180 kgm2

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Marked as best answer by a Subject Expert

tofugiraffe

Sr. Member
Posts: 319

Reply #1 on: Jul 28, 2018

Answer to Question 1

D

Answer to Question 2

A

Mr.Thesaxman

Member
Posts: 514

Reply 2 on: Jul 28, 2018

Excellent

softEldritch

Member
Posts: 334

Reply 3 on: Yesterday

Gracias!

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