Answer to Question #277138 in Physics for Harun

Question

Define the elastic modulus. Explain the different types of elastic modulus.

1+2

b) State and explain Einstein's Photoelectric Effect theory.

1+2

c) If 12𝑁 force is applied to a fluid of cross-section 5.34 𝑐𝑚2 with a shearing rate of

0.7 𝑠−1

then find the viscosity of the fluid.

Answer 1

a) The elastic modulus is the modulus of proportionality that shows what effort is required to extend a solid by some length: Young's modulus, shear modulus, bulk modulus.

b) Light of the corresponding wavelength causes metals to emit electrons.

c) The viscosity is

$$\gamma=\frac F{Au}=31100\text{ Pa}·\text s.$$