1 point
Calculate the kinetic energy of a 90 kg skateboarder traveling at 10
meters/second down a ramp. (Plug the variables into the KE equation, and
solve!) *

A.450 Joules
B.900 Joules
C.1800 Joules
D.4500 Joules

Which of the following are used in an electrochemical cell? a. electrodes b. electrolyte c. terminals d. all of the above

Light from two different sources are incident upon the same side of a polarizing filter. light from one source is polarized with total intensity ip, while light from the other source is unpolarized with total intensity iu. as you rotate the polarizing filter through 360 degrees, the intensity of the transmitted light on the other side varies by a factor of 9. what is the relative intensity of the initial polarized source to the unpolarized source, or ip/iu?

"if the pressure acting on an ideal gas at constant temperature is tripled, its volume isa) reduced to one-third.b) increased by a factor of three.c) increased by a factor of two.d) reduced to one-half"