Ireally need answers asap .how do i evaluate the following expressions: •x=-5 and y=11•4y-10x•x to the power of 3•6y to the power of 2•5 (3x+2y)•(y-x) to the power of 2

We're told x=-5 and y=11 and asked to evaluate a few expressions. That just means substitute these values into the expressions and compute the exact numerical answer.

94

x to the power of 3

-125

•6y to the power of 2

Probably means

726

35

•(y-x) to the power of 2

256

step-by-step explanation:

we can use this expression to calculate the energy gain as a particle moves with a field or the energy loss as it moves against it. (note that it is also used to define the electron-volt, a unit of energy equal to that gained by an electron as it falls through a pd of 1 v, i.e. w = 1 ev = 1.6 10-19 c 1 v = 1.6 10-19j).in fact this expression is really nothing more than the statement that potential is the potential energy per unit charge. in this case, v= w/qis simply stating that the change in potential energy(or work done) per unit charge is equal to the change in potential (or potential difference), v.student questions: uniform electric fields2electron beamcathode+5 kvanode0 v

yes

step-by-step explanation:

they have to be opposite and reciprocal of eachother.