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susane
Questions (18)
Four 20 ohm resistors are connected in parallel and the combination is connected to a 20 V emf device. The current in any one of
2 answers
1,477 views
The sum of the emfs and potential difference around a closed loop equals zero" is a consequence of:
a) Newton's third law b)
1 answer
1,104 views
Current flows out of a 110V source through a 10 ohm resistor and then through parallel branches, one containing a 20 ohm
1 answer
589 views
Four 20-ohm resistors are connected in series and the combination is connected to a 20 V emf device. The current in any one of
3 answers
896 views
A total resistance of 3 ohms is to be producd by combining an unknown resistor R with a 12 ohm resistor. What is the value of R
6 answers
9,933 views
The emf of a battery is equal to its terminal potential difference:
A) under all conditions B) only when the battery is being
3 answers
2,015 views
in the context of the loop and junctions rules for electrical circuits a junction is:
a) where a wire is connected to a resistor
1 answer
960 views
For any circuit the number of independent equations containing emfs, resistances, and currents equals the number of branches.
3 answers
1,964 views
Thanks for any help :)
Four 20 ohm resistors are connected in parallel and the combination is connected to a 20V emf device. The
5 answers
20,130 views
During a lighting discharge, 30C of charge move through a potential difference of 1.0 X 10^8V in 2.0X10^-2s. The energy released
2 answers
1,558 views
If 500 J of work are required to carry a charged particle between two points with a potential difference of 40V, the magnitude
6 answers
17,786 views
A sinusoidal wave travels along a string. The time for a particle to move from maximum displacement to zero is 0.170s. What are
1 answer
886 views
A 5.00kg ball is swung at the end of a 1.25 m chain with a w of 2.0s^-1. Find the balls
a)V (m/s) b) KE 1/2mv^2 c) I, inertia d)
1 answer
543 views
If a wheel turns with a costant rotational speed then: each point on its rim moves with constant roational velocity, each point
1 answer
776 views
Four identical particles, each with mass m, are arranged in the x,y plane like a cross. They are connected by light sticks to
2 answers
3,206 views
If a wheel turns with a costant rotational speed then: each point on its rim moves with constant roational velocity, each point
1 answer
806 views
A 1-kg block is lifted vertically 1m by a boy. The work done by the boy would be one jule or would no work be done. I'm
3 answers
4,139 views
A 6.0kg block is released from rest 80m above the ground. When it has fallen 60m its kinetic energy is:
I got 1200J as my answer
3 answers
2,301 views
