Aphoton has 8.0 × 10–15 j of energy. planck’s constant is 6.63 × 10–34 j•s. what is the frequency of the photon?
a.) 1.21 × 10^19 hz
b.) 8.3 × 10^–20 hz
c.) 1.21 × 10^–19 hz
d.) 8.3 × 10^20 hz

a charge 3q is at the origin, and a charge −2q is on the positive x axis at x=a. part a where on the x-axis would you place a third charge so it would experience no net electric force? enter an expression for the exact answer, which will involve a square-root sign. (do not enter an approximate decimal answer.)

answer: he got 23

explanation:

another example of kinetic energy would be,

kinetic energy   >     moving energy

answer   >   letter choice (c),   a hammer falling off a table.

hope that !                                         : )