Which of the following is an example of an inclined plane?
Group of answer choices

Write a question about how changing temperature affects the gas inside the sports ball

According to social exchange theory, altruistic behaviors benefit the individual who performs them. t/f

Achemistry student needs of 40ml diethylamine for an experiment. by consulting the crc handbook of chemistry and physics, the student discovers that the density of diethylamine is 0.7 . calculate the mass of diethylamine the student should weigh out. round your answer to significant digits.