A soccer ball whose radius is 11 cm rolls a distance of 10 m in 3.50 s. What is the angular speed of the ball?
A) 5.1 m/s
B) 13 m/s
C) 26 m/s
D) 39 m/s
E) 52 m/s
C
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Match the words in the left-hand column to the appropriate blanks in the sentences in the right-hand column. Use each word only once.
1. Our solar system was created by the gravitational collapse of the ________. 2. Our Moon was most likely formed by a collision between Earth and a Mars-sized _____. 3. The first few hundred million years of the solar system's history were the time of the _____, during which Earth suffered many large impacts. 4. Mars was formed by the ____ of smaller objects. 5. The era of planet formation ended when the remaining hydrogen and helium gas of the solar nebula was swept into interstellar space by the _____. 6. Ice can form from a gas through the process of _____. 7. Hydrogen compounds in the solar system can condense into ices only beyond the _______. 8. _______ allows us to determine the age of a solid rock.
A truck is carrying a 120-kg refrigerator, which is 2.20 m tall and 85.0 cm wide has its center of mass at its geometrical center
The refrigerator is facing sideways and a short strip on the bed of the truck keeps the refrigerator from sliding. What is the maximum acceleration that the truck can have before the refrigerator begins to tip over? A) 1.90 m/s2 B) 4.17 m/s2 C) 3.79 m/s2 D) 7.58 m/s2 E) 8.34 m/s2
When an electron collides with a positron producing a pair of high gamma rays, we call this process
A) pair production B) matter obliteration C) photodisintegration D) annihilation
The graphs below show angular velocity as a function of time. In which one is the magnitude of the angular acceleration constantly decreasing?
A.
B.
C.
D.
E.
