The person who expounded the uncertainty principle was
a. Max Planck.
b. Albert Einstein.
c. Neils Bohr.
d. Erwin Schrödinger.
e. Werner Heisenberg.
e
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Two pipe columns are required to have the same Euler buckling load Pcr. Column 1 has flexural rigidity EI1 and height L; column 2 has flexural rigidity (2/3)EI2 and height L. The ratio (I2/I1) at which both columns will buckle under the same load is approximately:
(A) 0.8
(B) 1.0
(C) 2.2
(D) 3.1
When a nucleus emits a beta particle, its atomic number
A) increases by 1. B) decreases by 1. C) increases by 2. D) decreases by 2. E) none of the above
A racecar driver steps on the gas, changing his speed from 10 m/s to 30 m/s in 4 seconds. The acceleration of the racecar is _________
Fill in the blank(s) with correct word
A metallic surface is illuminated with light of wavelength 400 nm
If the work function for this metal is 2.40 eV, what is the maximum kinetic energy of the ejected electrons, in electron-volts? (1 eV = 1.60 × 10-19 J, c = 3.00 × 108 m/s, h = 6.626 × 10-34 J ? s)