Physics, 03.12.2020 01:50, lfg0929

A student made the electromagnet shown and used it to pick up one sewing pin. Which change to the electromagnet would most likely allow it to pick up
two sewing pins?
A. Replace the nail with a thick roll of paper.
B. Double the length of the wires that connect it to the battery
C. Double the number of coils of wire around the nail.
D. Replace the nail with a large steel bolt.

Answers: 3

Show answers

Other questions on the subject: Physics

Physics, 22.06.2019 15:20, mjwaple57

Acarpenter builds an exterior house wall with a layer of wood 2.9 cm thick on the outside and a layer of styrofoam insulation 2.3 cm thick on the inside wall surface. the wood has k=0.080w/(m⋅k), and the styrofoam has k= 0.010 w/(m⋅k). the interior surface temperature is 19.0 ∘c , and the exterior surface temperature is -15.0 ∘c . a.)what is the temperature at the plane where the wood meets the styrofoam? celsius b.)what is the rate of heat flow per square meter through this wall? /m^2

Answers: 2

continue

Physics, 22.06.2019 21:30, kiasiab17

While carrying a heavy box up the stairs, you set the box on a step and rest. then you pick up the box and carry it to the top of the stairs. describe these actions in terms of balanced and unbalanced forces acting on the box.

Answers: 1

continue

Physics, 22.06.2019 23:00, lauren203

How much energy will be transferred to your eardrum while listening to this sound for 1.0 min?

Answers: 1

continue

Physics, 22.06.2019 23:20, libbybacon7

Consider a production line with five stations. station 1 can produce a unit in 9 minutes. station 2 can produce a unit in 10 minutes. station 3 has two identical machines, each of which can process a unit in 12 minutes (each unit only needs to be processed on one of the two machines. station 4 can produce a unit in 5 minutes. station 5 can produce a unit in 8 minutes. which station is the bottleneck station?

Answers: 2

continue

Do you know the correct answer?

A student made the electromagnet shown and used it to pick up one sewing pin. Which change to the e...