Find the force on a proton if it is situated in an electric feild of 50000n/c to the left

Explain to someone who knows nothing about fossils the study of invertebrate paleontology and how it scientists understand the history of the earth. be sure your explanation contains a minimum of two complete sentences.

Aforklift raises a 1,020 n crate 3.50 m up to a shelf. how much work is done by the forklift on the crate? the forklift does j of work on the crate.

Which of the following is not a transverse wave? a) soundb) lightc) radiod) all of thesee) none of these