Suppose there are 3 molecules in a container. If each molecule has a 1-in-2 chance of being in the left half of the container, what is the probability that there are exactly 2 molecules in the left half of the container?
a. 1/2
b. 1/3
c. 1/8
d. 3/8
e. 3/5
d
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A piece of ordinary glass transmits about 92% of the visible light incident on the glass. The transmittance of the glass can be increased by
A. slightly tilting the glass with respect to the light beam. B. increasing the intensity of the incident light. C. applying an anti-reflective coating to both sides of the glass. D. making the glass thicker.
Stars of spectra type K have strong Balmer lines
a. True b. False Indicate whether the statement is true or false
For the polymer in Example problem 9.4, calculate the total strain after 30 days if the material is subject to a creep test with a constant stress of 3×107 Pa. Assume that this material behaves as a Maxwell solid and the viscous part of this material behaves as a Newtonian fluid.
What will be an ideal response?
Molly measures a Hubble constant of 20 km/sec/million light-years. Sam measures a Hubble constant of 25 km/sec/million light-years. All other assumptions being the same, which person would estimate a LARGER age to the universe?
A) Sam B) Molly C) They both would measure the same age.