The magnetic field at point P due to a 2.0-A current flowing in a long, straight, thin wire is 8.0 ?T. How far is point P from the wire? (?0 = 4? × 10-7 T ? m/A)
A) 10 cm B) 2.0 cm C) 5.0 cm D) 2.5 cm E) 4.0 cm
C
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______________ is the largest known asteroid
a. Pluto b. Mars c. Ceres d. Vesta e. Mercury
The amount of work done on a heavy box carried by Nellie across a room at a constant speed
A) depends on the weight of the box. B) depends on the distance walked. C) depends on both weight of the box and distance walked. D) is none. E) none of the above
The gauge pressure of the water in a swimming pool at 10 ft is __________ the gauge pressure of the water at 5 ft
Fill in the blank(s) with correct word
A steel lift column in a service station is 4.0 m long and 0.20 m in diameter. Young's modulus for steel is 20 × 1010 N/m2. By how much does the column shrink when a 5000-kg truck is on it?
A) 4.7 × 10-7 m B) 8.0 × 10-7 m C) 3.2 × 10-6 m D) 7.8 × 10-6 m E) 3.1 × 10-5 m