Tim, with mass 78.9 kg, climbs a gymnasium rope a distance of 4.3 m. The acceleration of gravity is 9.8 m/s 2 . How much potential energy does Tim gain? 1. 2826.12 J 2. 3823.57 J 3. 3324.85 J 4. 2992.36 J 5. 3657.33 J 6. 2493.63 J 7. 3158.60 J 8. 3989.82 J 9. 2659.88 J 10. 3491.09 J

Aresearcher plans to conduct a test of hypotheses at the 1% significance level. she designs her study to have a power of 0.90 at a particular alternative value of the parameter of interest. the probability that the researcher will commit a type ii error for the particular alternative value of the parameter at which she computed the power is: a. 0.90. b. 0.01. c. 0.10. d. equal to 1

The a metal retainer that keeps the rolling elements evenly spaced. n a. seal n b. separator n c. bearing n d outer race

Astudent looks at ocean waves coming into the beach. an ocean wave with more energy will a) have a greater height. b) have a greater period. c) travel toward the beach faster. d) strike the beach with greater frequency.