It was the newly developed ________ theory which allowed Adams and Leverrier to predict the position of Neptune from the motions of Uranus

Fill in the blank(s) with correct word


perturbation

Physics & Space Science

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Conduction: If, with steady state heat flow established, you double the thickness of a wall built from solid uniform material, the rate of heat loss for a given temperature difference across the thickness will

A. become one-half its original value.
B. also double.
C. become one-fourth its original value.
D. become 1/ of its original value.
E. become four times its original value.

Physics & Space Science

At what angle will the fourth-order maximum occur for a wavelength of 513 nm using a diffraction grating with 10 890 lines per cm?

a. 30° b. 90° c. No fourth-order maximum will occur in this case. d. 1.6° e. 12.8°

Physics & Space Science

The temperature coefficient of resistivity for a "perfect" ohmic material would be:

a. positive and constant. b. zero. c. negative. d. positive and uniformly increasing.

Physics & Space Science

An electron moves horizontally across the Earth’s equator at a speed of 2.50 × 106 m/s and in a direction 35.08 N of E. At this point, the Earth’s magnetic field has a direction due north, is parallel to the surface, and has a value of 3.00 × 1025 T. What is the force acting on the electron due to its interaction with the Earth’s magnetic field?

1.6.88 × 10-18 N due west 2.6.88 × 10-18 N toward the Earth’s surface 3.9.83 × 10-18 N toward the Earth’s surface 4.9.83 × 10-18 N away from the Earth’s surface 5.4.00 × 10-18 N away from the Earth’s surface

Physics & Space Science