A.
Initially, the energy is used to overcome the attractions between the molecules. At this point the temperature of the sample does not increase. When the attractions have been overcome the energy then becomes kinetic energy of the molecules, increasing temperature
Answer:
(a) 1.029 m
(b) 1.78 mm
Solution:
As per the question:
Wavelength of light,
Slit width, w = 0.68 mm
Now,
The distance first minimum in the diffraction pattern,
Now,
(a) For first minima:
where
D = Distance from the screen
D = 1.029 m
(b) The width of the central maxima is given by:
2y =
Answer:
Push and pull both are forces , but the difference is in their direction at which it is applied . If the force applied in the direction of motion of the particle then we call it as push . If that force applied in the direction OPPOSITE to the motion of particle then it is termed as pull
The expanded-function dental assistant (EFDA) can play a
major role in the fabrication and temporary cementation of a provisional crown
or bridge. It is the dentist’s and the EFDA’s responsibility to remain current
with the new provisional materials and techniques that are available. It is
essential that a provisional crown or bridge remain cemented while the fixed
prosthesis is being prepared and delivered to the dental office. When the
patient returns for final cementation of a fixed crown or bridge, the
provisional should be cautiously removed without causing any fracture or harm,
just in case it will need to be recemented if the final prostheses needs to be
sent back to the lab for adjustments and remake.