At which of the following temperatures would one liter of water weigh the most?
a. 2°C
b. 4°C
c. 8°C
d. 90°C
e. It would weigh the same at all these temperatures.
B
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If the half-life of a material is 45 years, how much of it will be left after 100 years?
A) more than 1/2 B) less than 1/2 but more than 1/4 C) more than 1/4 but less than 1/2 D) less than 1/4 but more than 1/8 E) less than 1/8
An Olympic skier moving at 22.0 m/s down a 30.0° slope encounters a region of wet snow, of coefficient of friction µk = 0.740 . How far down the slope does she go before stopping?
a. 119 m c. 175 m b. 145 m d. 199 m
If two waves pass through the same region of space, they continue to move independently of one another
Indicate whether the statement is true or false
The crustal surface and the uppermost part of the mantle is called the
A) asthenosphere. B) lithosphere. C) mohorovicic. D) centrosphere.