Linear momentum

a. has the units of mass times acceleration.
b. has magnitude and direction.
c. is a scalar quantity.
d. none of these


b

Physics & Space Science

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In the _________technique the specimen is in a fixed position relative the x-ray beam and diffraction of continuous radiation occurs when Bragg’s law is satisfied.

Fill in the blank(s) with the appropriate word(s).

Physics & Space Science

PEEK, along with other polymers, such as PPE, PEK, PSU, and PES, is a highperformance _________polymer.

Fill in the blank(s) with the appropriate word(s).

Physics & Space Science

Interstellar gas clouds may collapse to form stars if they

a. have very high temperatures. b. encounter a shock wave. c. rotate rapidly. d. are located near main sequence spectral type K and M stars. e. All of the other choices are correct.

Physics & Space Science

Plutonium has a half life of 2.4 × 104 years. How long does it take for 99% of the plutonium to decay?

A) 1.6 × 106 y B) 1.6 × 105 y C) 1.6 × 104 y D) 1.6 × 103 y E) 1.6 × 102 y

Physics & Space Science