____ orbit is one in which an object orbiting Earth has an orbital period equal to the rotation period of Earth
a. A daily
b. A lunar
c. An epicycle
d. A geosynchronous
e. An open
D
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Total Internal Reflection: Light in a transparent material that has an index of refraction of 1.333 strikes the boundary with another transparent material for which the index of refraction is 1.010. What is the critical angle for total internal reflection between these two materials?
Fill in the blank(s) with the appropriate word(s).
Two pipe columns are required to have the same Euler buckling load Pcr. Column 1 has flexural rigidity EI and height L1; column 2 has flexural rigidity (4/3)EI and height L2. The ratio (L2/L1) at which both columns will buckle under the same load is approximately:
(A) 0.55
(B) 0.72
(C) 0.81
(D) 1.10
A spring wound clock makes use of ________ energy to drive the mechanism.
What will be an ideal response?
A helium balloon rises because of Archimedes' principle
a. True b. False Indicate whether the statement is true or false