Which of the following is a remnant of a supernova?

A. neutron star

B. protostar

C. black dwarf

D. red giant

Identify at least two ways that runoff can negatively impact an ecosystem.

Give 5 examples of matter

Three nested coffee filters fall, quickly reaching a terminal speed of ~ 1.7 m/s. If the air resistance force on a single falling coffee filter was F1, how large is the air resistance force on the three falling filters?

Find the radian measure of the central angle of a circle of radius 14 feet that intercepts an arc of length 9 ft.

Which is not true of atoms

How does sound travel from your vocal cords to someone's ear?

Select all the correct answers. Copper is listed in the 29th position in the periodic table. It's used for conducting electricity. What is copper? a metal a metalloid a nonmetal a noble gas an element

Neutron stars are smaller in size than less massive white dwarfs. a. True b. False

A lightning bolt carrying 30,000 A lasts for 50 micro-seconds. If the lightning strikes an airplane flying at 20,000 feet, what is the charge deposited on the plane?

David walks 3 km north, and then turns east and walks 4 km