Examlex
Match each item with the correct statement below.
-the density of water vapor in the air
3-D Printers
3-D printers are machines that create three-dimensional objects by adding material layer by layer, based on digital models.
Third Industrial Revolution
The period characterized by the digital revolution and the use of electronics and information technology to automate production.
Law of Diminishing Returns
A principle stating that as one factor of production is increased while others are held constant, there comes a point at which the marginal gain in output begins to decrease.
Long Run
A period in which all factors of production and costs are variable, allowing for complete adjustment to changes.
Q3: The wave with the largest wavelength is
Q9: measured in decibels<br>A)amplitude<br>B)constructive interference<br>C)destructive interference<br>D)diffraction<br>E)Doppler effect<br>F)frequency<br>G)longitudinal<br>H)pitch<br>I)ray<br>J)reflection<br>K)reverberation<br>L)sound level<br>M)transverse<br>N)ultrasound<br>O)waveform<br>P)wavelength
Q14: In ultrasound the _ of the sound
Q24: A car and driver have a total
Q33: What force will a negative charge placed
Q38: About how hot does something have to
Q44: The potential energy of the crate is
Q77: In a circuit connected to a battery,the
Q126: Solar energy<br>A)is a recent invention.<br>B)has been used
Q150: The maximum displacement of points on a