The oldest-known smelted iron dates to approximately what year?
(a) 27,000 BCE
(b) 6000 BCE
(c) 2500 BCE
(d) 1000 BCE
(c) 2500 BCE
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Torque: The maximum torque on a flat current-carrying loop occurs when the angle between the plane of the loop's area and the magnetic field vector is
A. 0° B. 45° C. 90° D. 135°
You leave on a trip in order to attend a meeting that will start after you begin your trip. Along the way you plan to stop for dinner
If the fastest you can safely drive is 65 mi/h, what is the longest time you can spend over dinner and still arrive just in time for the meeting? A) 2.4 h B) 2.6 h C) 1.9 h D) You can't stop at all.
An American football field, including end zones, is 360 feet long and 160 feet wide. If you needed to describe it for someone in Europe using the metric system,
which one of the following quantities would be closest to its area in square meters? (2.54 cm = 1.00 in.) A) 4,920 m2 B) 5,350 m2 C) 88.0 m2 D) 12,100 m2 E) 13,200 m2
The distance between two successive wave crests is the ________ of a wave
Fill in the blank(s) with correct word