True / False 1. Current - carrying coil, when suspended freely, can rest in any direction.
2. Silver is an insulator of electricity.
3. All metals are conductors of electricity.
4. An electric bell uses an electromagnet.
5. electromagnet with the soft iron core is a temporary magnet.
6. use cells as the source of electricity to run an electric immersion rod.
7. For a circuit to be complete, every part of it must be made up of conductors.
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The membrane surrounding a living cell consists of an inner and an outer wall that are separated by a small space. assume that the membrane acts like a parallel plate capacitor in which the effective charge density on the inner and outer walls has a magnitude of 7.0 × 10-6 c/m2. (a) what is the magnitude of the electric field within the cell membrane? (b) find the magnitude of the electric force that would be exerted on a potassium ion (k+; charge = +e) placed inside the membrane.

What’s #16 asking me and how do i solve it?

Question part points submissions used suppose that 2 j of work is needed to stretch a spring from its natural length of 26 cm to a length of 36 cm. (a) how much work is needed to stretch the spring from 28 cm to 32 cm? (round your answer to two decimal places.)