Double-Slit Interference: Coherent light of wavelength 519 nm passes through two slits. In the resulting interference pattern on a screen 4.6 m away, adjacent bright fringes are 4.0 mm apart. What is the separation of the two slits?
Fill in the blank(s) with the appropriate word(s).
0.60 mm
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The coefficient of linear expansion of steel is 12 × 10-6 K-1. What is the change in length of a 25-m steel bridge span when it undergoes a temperature change of 40 K from winter to summer?
A) 1.2 cm B) 1.4 cm C) 1.6 cm D) 1.8 cm E) 2.0 cm
A bowling ball has a mass of 7.00 kg, a moment of inertia of 2.8 × 10^?2 kg·m2, and a radius of 0.100 m. If it rolls down the lane without slipping at a linear speed of 4.30 m/s, what is its angular speed?
a. 70.0 rad/s b. 43.0 rad/s c. 30.1 rad/s d. 0.430 rad/s e. 0.700 rad/s
A collection of atoms has 20% of the sample in a state 5.9 eV above the ground state
If these emit coherent radiation, what is the wavelength of the laser light produced? (c = 3.00 × 108 m/s, h = 6.626 × 10-34 J ? s, 1 eV = 1.60 × 10-19 J) A) 210 nm B) 91 nm C) 340 nm D) 34 nm
The number of electrons in a hydrogen atom is ______________
Fill in the blank(s) with correct word