An astronaut stands by the rim of a crater on the moon, where the acceleration of gravity is 1.62 m/s2
To determine the depth of the crater, she drops a rock and measures the time it takes for it to hit the bottom. If the time is 6.3 s, what is the depth of the crater?
A) 10 m
B) 14 m
C) 26 m
D) 32 m
E) 38 m
D
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Answer the following statement true (T) or false (F)
What are the formula masses of water, H20; propene, C3H6; and 2-propanol, C3H8O?
A) water: 18 amu; propene: 40 amu; 2-propanol: 58 amu B) water: 18 amu; propene: 42 amu; 2-propanol: 62 amu C) water: 18 amu; propene: 42 amu; 2-propanol: 60 amu D) water: 18 amu; propene: 44 amu; 2-propanol: 64 amu
The coefficient of linear expansion of lead is 29 × 10-6 K-1. What change in temperature will cause a 10-m long lead bar to change in length by 3.0 mm?
A) 5.0 K B) 10 K C) 15 K D) 20 K E) 25 K
All the following statements are true. Which of them are considered to be "exceptions" to the general trends described by the first three major features of the solar system?
A. Pluto is in the outer solar system but is ice-rich in composition. B. Jupiter's largest moon, Ganymede, is even larger than Earth's moon. C. Our Moon has a diameter more than 1/4 the diameter of Earth. D. Venus rotates in a direction opposite to the rotation of the other terrestrial planets. E. Uranus rotates with an axis tilt that lies nearly in the ecliptic plane.