What is one advantage of using primary sources when doing research on an experiment?
A. They are summaries of many scientists' work.
B. They include the opinions of many scientists.
C. They help you get the main ideas faster.
O D. They are written by the scientists who did the experiment.

What is the momentum of a 2 kg object moving at 15 meters per second

Acompound machine is also called a machine. a. force b. simple c. complex d. directional

You are a sales representative for a company that makes a new alternate fuel for vehicles. you have prepared a presentation for the environmental engineers to sell your new product. what question do you expect the audience to ask regarding whether the new fuel will cause less damage to the environment? a. do we have to change any parts of the vehicle to use this alternate fuel? b. will the vehicles get better fuel mileage with the alternate fuel? c. how much greenhouse gas does your fuel produce compared with current fuel sources? d. is the alternate fuel more expensive than fossil fuel?