What average force is needed to accelerate a 7.00-gram pellet from rest to 125 m/s over a distance of 0.800m along the barrel of a rifle?

Consider a hydrogen atom in the ground state. what is the energy of its electron? =e= jj now consider an excited‑state hydrogen atom. what is the energy of the electron in the =5n=5 level? =e5= j

Which of the following is a characteristic shared by both electron and light microscopes? a. they both employ the use of objective lenses. b. both microscopes require an internal camera to visualize the specimen. c. both microscopes have a resolving power of 0.01 nm. d. they both utilize white light to magnify the specimen.

Due in 40 explain in terms of frame of reference if you’re inside a moving train everything on the outside can seem to be moving