By what factor should the length of a simple pendulum be changed if the period of vibration were to be increased by a factor of three?

a. 1/32
b. 1/3
c. 3
d. 32
e. 1


d

Physics & Space Science

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A photocathode having a work function of 2.4 eV is illuminated with monochromatic light whose photon energy is 3.4 eV. What is maximum kinetic energy of the photoelectrons produced?

(c = 3.00 × 108 m/s, h = 6.626 × 10-34 J ? s, 1 eV = 1.60 × 10-19 J) A) 1.6 × 10-19 J B) 3.8 × 10-19 J C) 4.4 × 10-19 J D) 4.9 × 10-19 J E) 5.4 × 10-19 J

Physics & Space Science

Which of the following observations of an extrasolar planet system would be inconsistent with what we expect from the nebular theory of solar system formation?

A) a system which has two terrestrial planets close in and two jovian planets farther out B) a system in which some planets have small moons orbiting in a direction opposite to the planet's rotation C) a system in which some planets rotate in a direction opposite to their orbits D) a system in which all the planets orbit in completely different planes

Physics & Space Science

The planet Uranus held a special place in the mythology of the ancient Romans

Indicate whether the statement is true or false

Physics & Space Science

Some antiparticles are identical to the particles they correspond to

a. True b. False Indicate whether the statement is true or false

Physics & Space Science