Calculate the time needed to accelerate a 40 kg object from 2 m/s to 12 m/s if a force of 8 n is applied. a 400 seconds b 10 seconds c 50 seconds d 0.2 seconds

An electron and a proton have the same kinetic energy upon entering a region of constant magnetic field and their velocity vectors are perpendicular to the magnetic field. suppose the magnetic field is strong enough to allow the particles to circle in the field. note: you'll need to look up the masses for an electron and proton. 1) what is the ratio of the radii of their circular paths rp/re?

The difference between a red shift and a blue shift has to do with wavelength frequency. t or f

Organelles are 1. responsible for producing power for the cell 2. tiny structures in the cell that carry out the cell's activities 3. responsible for digestion in the cell 4. found outside of the membrane