Homework Clinic
Science Clinic => Physics => Topic started by: scienceeasy on Jul 28, 2018
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A solenoid with 500 turns, 0.10 m long, carrying a current of 2.0 A and with a radius of 10-2 m will have what strength magnetic field at its center? (magnetic permeability in empty space 0 = 4p 10-7 Tm/A)
a. 31 10-4 T
c. 2.5 10-2 T
b. 1.3 10-2 T
d. 62 10-4 T
Question 2
If it takes 8.0 N to stretch a spring 6.0 cm, and if the spring is then cut in half, what force does it take to stretch one of the halves 3.0 cm?
a. 2.0 N
c. 8.0 N
b. 4.0 N
d. 16 N
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Answer to Question 1
B
Answer to Question 2
C
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