Iv. answer the following questions:
1. a bag of cement lying in the open gets wet due to rain during the night. the next day the
sun shines brightly. do you think the changes, which have occurred in the cement could be
reversed? explain.
(2, a potter working on his wheel shaped a lump of clay into a pot. he then baked the pot in
an oven. do these two acts lead to the same kind of changes? justify your answer.
3) give three applications of heating and cooling in materials.
4) plastic do not conduct heat as well as iron. give reason
Answers: 1
Physics, 22.06.2019 10:10, xavierfox1721
In a simplified model of the human eye, the aqueous and vitreous humors and the lens all have a refractive index of 1.40, and all the refraction occurs at the cornea, whose vertex is 2.60 cm from the retina. what should be the radius of curvature of the cornea such that the image of an object 40.0 cm from the cornea’s vertex is focused on the retina?
Answers: 1
Physics, 22.06.2019 10:40, corrineikerd
When the magnetic domains in a material can be aligned, but eventually drift out of alignment, the material is
Answers: 2
Physics, 22.06.2019 12:20, cxttiemsp021
Which lists the pairs of plates in order from least to greatest in terms of the work done to move the electron?
Answers: 2
Physics, 22.06.2019 13:00, caleb1009
At a certain instant after jumping from the airplane a, a skydiver b is in the position shown and has reached a terminal (constant) speed vb = 52 m/s. the airplane has the same constant speed va = 52 m/s, and after a period of level flight is just beginning to follow the circular path shown of radius ρa = 2330 m. (a) determine the velocity and acceleration of the airplane relative to the skydiver. (b) determine the time rate of change of the speed vr of the airplane and the radius of curvature ρr of its path, both as observed by the nonrotating skydiver.
Answers: 3
Iv. answer the following questions:
1. a bag of cement lying in the open gets wet due to rain...
1. a bag of cement lying in the open gets wet due to rain...
Mathematics, 07.11.2020 03:20
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English, 07.11.2020 03:20