In a brinell hardness test, a 1500-kg load is pressed into a specimen using a 10-mm-diameter hardened steel ball. the resulting indentation has a diameter = 3.2 mm. (a) determine the brinell hardness number for the metal. (b) if the specimen is steel, estimate the tensile strength of the steel.

Aspectroscope breaks light up into its colors, allowing scientists to analyze light from the solar system and universe. by studying the spectral line patterns, widths, strengths and positions, scientists can determine the speed, position, and of celestial bodies. a) age b) origin c) rotation d) temperature

Use the drop-down menus to answer each question. which line represents the movement of a cart with a constant acceleration? a which line represents the movement of a cart with a constant velocity? c which lines represents a cart with no velocity or acceleration? b

The sun's declination is 0° at the a. summer and winter solstice b. summer and winter equinox c. vernal and autumnal solstice d. vernal and autumnal equinox