Calculate the speed of a plane which travels a distance of 2100 miles in 3 hours

Need asap ‼️ 20 pts which gravitational force field diagram is drawn correctly? (answers in pictures below)

Decreased sensitivity to an unchanging stimulus is known as

Aprotein molecule in an electrophoresis gel has a negative charge. the exact charge depends on the ph of the solution, but 30 excess electrons is typical. what is the magnitude of the electric force on a protein with this charge in a 1600n/c electric field? write in two significant numbers, and also in newton