Match each simple machine with its description. wheel and axle
*
can split apart an object
lever
x
is a ramp
pulley
X
reduces the amount of friction when
an object is being moved
inclined plane
x
similar to a seesaw can lift an object
wedge
*
uses a rope: can change the direction
of a force
o Try again.

Wavelength,frequency,and energy are related.what happens to a wave as it’s wavelength gets shorter?

The difference between a red shift and a blue shift has to do with wavelength frequency. t or f

Asheet of steel 1.5 mm thick has nitrogen atmospheres on both sides at 1200oc and is permitted to achieve a steady-state diffusion condition. the diffusion coefficient for nitrogen in steel at this temperature is 6 x 10- 11 m2 /s, and the diffusion flux is found to be 1.2 x 10-7 kg/m2 -s. also, it is known that the concentration of nitrogen in the steel at the high-pressure surface is 4 kg/m3 . how far into the sheet from this high-pressure side will the concentration be 2.0 kg/m3 ? assume a linear concentration profile.