Two water waves meet at the same point, one having a displacement above equilibrium of 60 cm and the other having a displacement above equilibrium of 40 cm. At this moment, what is the resulting displacement above equilibrium?
a. 140 cm
b. 100 cm
c. 70 cm
d. Information about the amplitudes needs to be given to find an answer.
B
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A light ray strikes a glass plate of thickness 0.80 cm at an angle of incidence of 60°. The index of refraction of the glass is 1.55. By how much is the beam displaced from its original line of travel after it has passed through the glass?
What will be an ideal response?
A hydrometer is used to measure
a. the time for an object to sink. b. water (hydro). c. the volume of a quantity of water. d. liquid density.
Above is an image of a supergranule
a. True
b. False
The tensile strength of 99.8 % dense sintered alumina is 205 MPa, in comparison to a tensile strength of 125 MPa for 85 % dense sintered alumina. The value of the KIc for the alumina is 4 MPa?m1/2. Compare the defect lengths in these two alumina materials, assuming that the fracture is caused by existing internal cracks.
What will be an ideal response?