Ideally, the wind direction is ______________ to isobars
Fill in the blank(s) with correct word
perpendicular
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The temperature in the sun
A. is always hotter than in the shade B. is always the same as in the shade C. is sometimes cooler than in the shade D. is not well defined
_______________ are comets that come very close to the Sun
Fill in the blank(s) with correct word
A 3.0-kg object moves to the right at 4.0 m/s. It collides head-on with a 6.0-kg object moving to the left at 2.0 m/s. Which statement is correct?
A) The total momentum both before and after the collision is 24 kg ? m/s. B) The total momentum before the collision is 24 kg ? m/s, and after the collision is 0 kg ? m/s. C) The total momentum before the collision is 0 kg ? m/s, and after the collision is 24 kg ? m/s. D) The total momentum both before and after the collision is zero. E) None of the above is true.
A race track is constructed such that two arcs of radius 80 m at A and 40 m at B are joined by two stretches of straight tracks as in the figure. In a particular trial run, a driver traveled at a constant speed of 50 m/s for one complete lap. In this case, the angular speed is greatest at