Collisions in which kinetic energy is conserved are said to be inelastic collisions
Indicate whether the statement is true or false
FALSE
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An average lapse rate of 2.7 °F/1000 ft is equivalent to
a. 1.5 °C/m. b. 4.0 °C/1000 ft. c. 5.0 °C/km. d. 6.5 °C/1000 m.
A sewing machine needle moves up and down in simple harmonic motion with an amplitude of 1.27 cm and a frequency of 2.55 Hz. What is the maximum acceleration of the needle?
A) 8.26 cm/s2 B) 16.5 cm/s2 C) 18.1 cm/s2 D) 326 cm/s2 E) 163 cm/s2
Why is the very center of Earth's core a solid and not a liquid? a. There is less metal in the central core
b. The central core has a combination of gases with the metals. c. Accretion "seeded" Earth with a solid central core. d. The pressure at the central core raises the melting point of the metals higher than its temperature. e. The central core is a frozen block of water ice.
Most stars in the Milky Way's halo are
A) very old. B) found inside molecular clouds. C) very young. D) blue or white in color.