A man pushes a box across a floor. As he increases the force he applies horizontally to the box A) the kinetic friction decreases
B) the kinetic friction may increase or decrease depending on the velocity of the box
C) the kinetic friction remains the same
D) the kinetic friction increases

Adouble-slit experiment is performed with light of wavelength 600 nm. the bright interference fringes are spaced 1.8 mm apart on the viewing screen.what will the fringe spacing be if the light is changed to a wavelength of 400 nm? ?

1) sections 1, 2, and 10 are significant primarily because they suggest the likelihood that a) widow wycherly is actually the woman in the full-length portrait. b) dr. heidegger wants to include his guests in an experiment with the water. c) dr. heidegger plans to drink some of the water from the vase and needs witnesses. d) the guests will be asked to witness dr. heidegger's transformation when he drinks the water.

State one advantage and one disadvantage of using a plane mirrior as a driving mirrior