In a rectangular coordinate system a positive point charge q=6.00⋅ 10 −9 c is placed at the point x = +0.150 m , y = 0, and an identical point charge is placed at x = -0.150 m , y = 0.

The of a machine determines its "usefulness." a. input force b. output force c. mechanical advantage

5g of ammonium nitrate was dissolved in 60g of water in an insulated container. the temperature at the start of the reaction was 23.0°c and at the end it was 19.0°c. calculate the energy absorbed by the reaction.

During the experiment if you could triple the breakaway magnetic force with all other quantities left unchanged, what is the new value for the critical velocity if it was v0 (initial velocity), initially? (b) now if you halved the radius with all other quantities left unchanged, what is the new critical velocity if it was v0 (initial velocity), initially? (c) if during the experiment, critical velocity quadrupled with all other quantities left unchanged, what is the new breakaway force if its magnitude was initially f0,?