A circular loop carrying a current of 1.6 A is oriented in a magnetic field of 0.30 T. The loop has an area of 0.14 m2 and is mounted on an axis, perpendicular to the magnetic field, which allows the loop to rotate. What is the torque on the loop when its plane is oriented at a 21° angle to the field?
a. 2.4E–2 N?m
b. 6.3E–2 N?m
c. 3.7E–2 N?m
d. 5.6E–2 N?m
e. 9.4E–1 N?m
a
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Two point charges of magnitudes + 8.00 ?C, and + 10.0 ?C are placed along the x-axis at x = 0 cm and x = 100 cm, respectively
Where must a third charge be placed along the x-axis so that it does not experience any net force because of the other two charges? A) 4.72 cm B) 47.2 cm C) 50 cm D) 9.12 cm E) 91.2 cm
A heavily loaded boat is floating in a pond. The boat starts to sink because of a leak but quick action plugging the leak stops the boat from going under although it is now deeper in the water. What happens to the surface level of the pond?
a. It stays the same. b. It goes up. c. It goes down. d. More information is needed to reach a conclusion.
The bending of light because of a speed change as it moves from one medium to another is called
a. diffraction. b. refraction. c. reflection. d. the Doppler effect.
The physical characteristic that is used to distinguish intrusive igneous rocks from extrusive igneous rocks is ______________
Fill in the blank(s) with correct word