A roadway is designed for traffic moving at a speed of 94 m/s. A curved section of the roadway is a circular arc of 740 m radius. The curved section is temporarily replaced with an unbanked roadway of the same radius
The coefficient of friction of this roadway is 0.40. The maximum safe driving speed for this unbanked, curved section is closest to: A) 54 m/s
B) 52 m/s
C) 50 m/s
D) 48 m/s
E) 46 m/s
A
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When there is electric current through an ionic liquid such as salty water, the moving charges are
A) only protons. B) only electrons. C) only negative ions. D) only positive ions. E) both positive and negative ions.
A stream's load is divided into three components: dissolved load, suspended load, and ______________ load
Fill in the blank(s) with correct word
A black hole may be visible because electromagnetic radiation is emitted from a(n) ________ surrounding it, heated up enough to emit X-rays
Fill in the blank(s) with correct word
A mosquito flies diagonally from a corner at the floor of a rectangular room, with coordinates (0, 0, 0) to the opposite corner at the ceiling, with coordinates (5.5, 3.75, h) m at a rate of 0.8 m/s. If it takes the mosquito 11 seconds to make the direct flight, what is h?
a. 5.8 m b. 6.7 m c. 8.5 m d. 8.3 m