A 3.0-kg box is given a brief push and travels 5.0 m up a plane that makes an angle of 30.0 degrees with the horizontal. The coefficient of kinetic friction between the box and the plane is 0.20. The
initial velocity of the block is
a. 5.8 m/s
b. 8.1 m/s
c. 4.0 m/s
d. 7 m/s

Did the proton move into a region of higher potential or lower potential? did the proton move into a region of higher potential or lower potential? because the proton is a negative charge and it accelerates as it travels, it must be moving from a region of higher potential to a region of lower potential.because the proton is a negative charge and it accelerates as it travels, it must be moving from a region of lower potential to a region of higher potential.because the proton is a positive charge and it slows down as it travels, it must be moving from a region of higher potential to a region of lower potential.because the proton is a positive charge and it slows down as it travels, it must be moving from a region of lower potential to a region of higher potential.request answerpart bwhat was the potential difference that stopped the proton? express your answer with the appropriate units.î”v î” v = nothingnothingrequest answerpart cwhat was the initial kinetic energy of the proton, in electron volts? express your answer in electron volts.ki k i = nothing ev request answerprovide feedback

If a substance is in the gas phase, which of qualities of the gas will stay constant? a: volume b: mass c: shape d: position of particles

Ascientist wants to test ways to reduce pollution in lake . what is the bestway of doing this