Which of the following is a primary source? O A. A scientific paper
O B. An encyclopedia entry
O C. A magazine article
O D. A news report on the Internet

Which of the following are properties of mechanical waves? check all that apply ⭕️ particles of the medium move back and fourth, but do not move with the wave. ⭕️ the particles of the medium always move parallel to the wave motion. ⭕️ wave motion begins with a disturbance in the medium. ⭕️ waves transport energy from a source outward, away from the source.

Acalorimeter uses the principle that thermal energy flows from hotter material to colder material until both reach the same

Using gravity, an elephant can pull a mouse towards it from the ground. true or false explain why. will give brainliest if answered fast and the best explanation