49:12 Please select the word from the list that best fits the definition
BREE
how light is reflected from a mineral
luster
cleavage
ores
hardness
color
streak
fracture
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Luster

Explanation:

Minerals that are also metals reflect light and produce a very shiny luster. The way a mineral reflects of absorbs light at its surface is called luster. Streak is the color of a mineral in powdered form. Nonmetallic minerals generally produce a white streak.

the number of protons in the nucleus of a given element. has slight luster and conducts electricity at high temperatures like metal.but like a nonmetal,boron is brittle and does not conduct electricity well at low temperatures. in graphite, carbon is a soft,brittle solid.it is reflective,ductile,or malleable.

question: ray weighs 100 kilograms, his wrestling partner, bobby, weighs 50 kilograms. if ray moves at 4 m s , how fast will bobby have to run at him to apply an equal amount of kinetic energy?

answer: 8 m/s he needs to run twice as fast to keep up so he has some work to do

explanation:   if the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.

question answered by

(jacemorris04)