Two current-carrying wires are parallel to one another and separated by 1 cm. If the distance between them is increased to 2 cm the new force will be what factor times the original force?
A. ½
B. 4
C. 2
D. 1
E. ¼
Answer: A
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A man lifts a 20.0-kg bucket of concrete from the ground up to the top of a 30.0-m tall building. The bucket is initially at rest, but is traveling at 4.0 m/s when it reaches the top of the building
How much work was done by the man in lifting the bucket? A) 5.88 kJ B) 600 J C) 760 J D) 6.04 kJ E) 160 J
State Newton's 1st law in your own words
What will be an ideal response?
In a certain electroplating process gold is deposited by using a current of 14.0 A for 19 minutes. A gold ion, Au+, has a mass of approximately 3.3 × 10-22 g. How many grams of gold are deposited by this process?
A) 28 g B) 22 g C) 16 g D) 33 g E) 97 g
There must be equal amounts of mass on both sides of the center of mass of a system
A) True B) False