At which latitude is the noonday Sun overhead only once a year?
a. 10°S
b. 23°S
c. 4°N
d. 30°N
d
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A horizontal force of 675 N is needed to overcome the force of static friction between a level floor and a 300-kg crate. What is the acceleration of the crate if the 675-N force is maintained after the crate begins to move and the coefficient of kinetic friction is 0.15?
a. 0.78 m/s2 b. 3.7 m/s2 c. 3.3 m/s2 d. 1.5 m/s2 e. 1.8 m/s2
In the UNS designation system, high-strength low-alloy steels start with the letter _________.
Fill in the blank(s) with the appropriate word(s).
Even though Venus is almost the same size as the Earth it does not have plate tectonics. This is most likely because
A) it has cooled more rapidly so that there is not enough internal convection to break up its crust B) it has no oceans for subduction and seafloor spreading to occur in C) due to the high temperatures at its surface, its crust has dried up and thickened so it cannot break up into plates D) impacts have filled its plate boundaries essentially turning the process off
A car is driven 1 200 m north at 20.0 m/s and then driven 1 600 m east at 25.0 m/s. What are the magnitude and direction of the displacement for this trip?
a. 1 400 m, northeast b. 2 000 m, 36.9° north of east c. 2 000 m, 53.1° north of east d. 2 800 m, 36.9° east of north e. 2 800 m, 53.1° east of north