A flat rectangular loop of wire carrying a 4.0-A current is placed in a uniform 0.60-T magnetic field. The magnitude of the torque acting on this loop when the plane of the loop makes a 30° angle with the field is measured to be 1.1 N ? m
What is the area of this loop?
A) 0.80 m2 B) 0.53 m2 C) 0.40 m2 D) 0.20 m2 E) 0.26 m2
B
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Alumina (Al2O3) is a(n) ______________material.
Fill in the blank(s) with the appropriate word(s).
Sound: Seven seconds after a brilliant flash of lightning, thunder shakes the house. Approximately how far was the lightning strike from the house?
A. much closer than one kilometer B. about one kilometer away C. about two kilometers away D. much farther away than two kilometers E. It is impossible to say.
The Himalayas in Asia are examples of ______________ mountains
Fill in the blank(s) with correct word
Is the mass of iron greater than, less than, or equal to the mass of aluminum?
A) The mass of iron is equal to the mass of aluminum. B) The mass of iron is greater than the mass of aluminum. C) The answer depends on temperature. D) This is an incorrectly stated question. Iron and aluminum are types of material, mass is the property of an object. E) The mass of iron is less than the mass of aluminum.