Vector v¹, is 6.6 units long and points along the negative x axis. vector v² is 8.5 units long and points at +55° to the positive x axis.(a) what are the x and y components of each vector? (b) determine the sum v¹+v²(magnitude and angle).

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?

Give one example to show that when substances are mixed,it may result in a chemical or a physical change depending on the conditions.

Using gravity, an elephant can pull a mouse towards it from the ground. true or false explain why. will give brainliest if answered fast and the best explanation