A stone is thrown straight up. What is its acceleration at the highest point?
What will be an ideal response?
9.8 m/s2 downward
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Rocks that include silicon and oxygen as major components are called ________.
A. silicides B. silicates C. silicons D. di-silicons E. dioxides
A ray of light goes from one transparent material into another, as shown in the figure. What can you conclude about the indices of refraction of these two materials?
A) n1 ? n2 B) n1 > n2 C) n1 = n2 D) n2 ? n1 E) n2 > n1
When a solid melts, energy is
A) absorbed by the solid. B) released by the solid. C) both of these D) neither of these
Capacitances of 10. ?F and 20. ?F are connected in parallel, and this pair is then connected in series with a 30. ?F capacitor. What is the equivalent capacitance of this arrangement?
What will be an ideal response?