The center of mass of an object must always be located where the physical material of the object is located
Indicate whether the statement is true or false
FALSE
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A runner starts from rest and with an acceleration of 1.0 travels a distance of 10 meters. The time it takes the runner to cover the distance is
A. 6.3 s. B. 5.7 s. C. 5.0 s. D. 4.5 s. E. 3.8 s.
The proton-proton chain is
A) the specific set of nuclear reactions through which the Sun fuses hydrogen into helium. B) the linkage of numerous protons into long chains. C) another name for the force that holds protons together in atomic nuclei. D) an alternative way of generating energy that is different from the fusion of hydrogen into helium.
The melting point of aluminum is 660°C, its latent heat of fusion is 4.00 × 105 J/kg, and its specific heat is 900 J/kg ? K
If 300 kJ of thermal energy are added to 442 g of aluminum at 100°C, what is the final state of the system? That is, how much is liquid, how much is solid, and what is its temperature?
In order for two objects to have the same temperature, they must
a. be in thermal equilibrium. b. be in thermal contact with each other. c. have the same relative "hotness" or "coldness" when touched. d. have all of the properties listed above. e. have only properties (b) and (c) above.