When a high-mass star explodes witch of the following occur

a. black hole

b. neutron star

c. white dwarf

d. either a or b

67.345g rounded to the nearest 1.0 whole number

Near the poles, more energy is reflected back into space than is absorbed. near the poles, more energy is reflected back into space than is absorbed. a. True b. False

Metal are good conductors of electricity true or false

Are ocean waves a type of mechanical waves

A quantity that is a measure of how the displacement of a body changes with time is: velocity speed momentum charge acceleration

Sometimes when you are training for event you may notice a decrease in improvement in level out of performance true or false

Two sailboats leave a harbor in the bahamas at the same time. the first sails at 23 mph in a direction 330°. the second sails at 34 mph in a direction 190°.

What conclusion can be drawn from the statement that an element has high electron affinity, high electronegativity, and a high ionization energy? A) The element is most likely from Group 1A or 2A and in period 1 or 2.

When a cyclist rides past you on the street, this is an example of

Why are galaxies visible