Three long, straight, parallel wires all lie in the yz plane and each carries a current of 20 A in the positive z direction. The two outer wires are each 4.0 cm from the center wire. What is the magnitude of the magnetic force on a 50-cm length of either of the outer wires?

a. 1.0 mN
b. 0.50 mN
c. 1.1 mN
d. 1.5 mN
e. 2.0 mN


d

Physics & Space Science

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Philosophers of the ancient world attempted to deduce truth about the Universe by reasoning from _____

A) careful observations B) geometric models C) personal experience D) first principles

Physics & Space Science

You give your physics book a quick push so that it slides along a table top. It soon slides to a stop. How would Aristotle and Galileo interpret this?

A) They agree that physics books can make you crazy and it's best not to think about them. B) Both of them say that this is just the natural motion of the book. C) Both of them say the force of friction slows it to a stop. D) Aristotle says this is just the natural motion of the book, but Galileo says the force of friction slows it to a stop. E) Aristotle says the force of friction slows it to a stop, but Galileo says this is just the natural motion of the book.

Physics & Space Science

The element ______________ was the gas used in the Hindenburg

Fill in the blank(s) with correct word

Physics & Space Science

If ? = 4, how many possible values can the magnetic quantum number m? have?

A) 4 B) 10 C) 5 D) 9 E) 3 F) 8

Physics & Space Science