Electrons are emitted at A with a velocity u at the angle into the space between two charged plates. The electric fi eld between the plates is in the direction E and repels the electrons approaching the upper plate. The fi eld produces an acceleration of the electrons in the E-direction of eE/m, where e is the electron charge and m is its mass. Determine the fi eld strength E which will permit the electrons to cross one-half of the gap between the plates. Also fi nd the distance s.

Astudent is working in the lab to determine how time affect impulse the student keeps the force the same in each row but changes impact the time some data is shown witch trial has the greatest a student is working in the lab to determine how time affect impulse the student keeps the fours the same in each row but change is the impact time some data shown witch trial has the greatest impulse

An object moves from position +34m to the position -15m in 15 seconds. what is the total displacement? what is the total velocity?

Researchers determine that the biodiversity in a woodland region is declining. they identify two major threats to the region's biodiversity, a method to address each threat, and the expected outcome of each method. this information is shown in the table. a) reforestation would not benefit many species because most forest species live on the ground. b) reforestation would take the longest time to be effective because trees take several years to grow. c) biological augmentation would benefit only a few species because is is typically not very effective. d) biological augmentation would take less time to ve effective because it targets the majority of prey species.