A boy uses a simple pulley to pull a block up a ramp. The height of the ramp is 4 m and the length of the ramp is 10 m Assuming that the ramp is frictionless, what is the ideal mechanical advantage of the ramp and does the pulley provide any additional advantage?

А The mechanical advantage of the ramp is 2.5, and the pulley does not provide any additional mechanical advantage.

B The mechanical advantage of the ramp is 10, and the pulley does not provide any additional mechanical advantage.

C The mechanical advantage of the ramp is 40, and the pulley does provide an additional mechanical advantage.

D The ideal mechanical advantage of the ramp is 0.4, and the pulley makes it easier to pull the block up the ramp.

The accompanying figure shows the percent of selected dna sequences that match between a chimpanzee and other primates. these data support the hypothesis that the figure shows the percentage of selected d n a sequences that match between the chimpanzee and other primates. the human has an almost 98 percent match, the gorilla has an almost 97 percent match, the orangutan has a 96 percent match, the gibbon has an almost 95 percent match, and the old world monkey has an almost 92 percent match. the accompanying figure shows the percent of selected dna sequences that match between a chimpanzee and other primates. these data support the hypothesis that the figure shows the percentage of selected d n a sequences that match between the chimpanzee and other primates. the human has an almost 98 percent match, the gorilla has an almost 97 percent match, the orangutan has a 96 percent match, the gibbon has an almost 95 percent match, and the old world monkey has an almost 92 percent match. chimpanzees and gibbons are the most closely related the chimpanzee's closest surviving relative is humans orangutans are the primates least closely related to chimpanzees old world monkeys and gibbons are the most closely related

Select the word from the list that best fits the definition a system made of 25 satellites

Which greenhouse gas is emitted when burn fossil fuels for energy? a.nitrogen b.oxygen c.carbon dioxide d.helium