Which of the substances in the chart has the greatest density?

a. gold

b. water (ice)

c. water (liquid)

d. piece of wood

An atom with (two, four, eight, or six valence electrons) is the most stable?

Bats rely on sound localization to be able to fly during the night. on a cool 20 °c summer night, a bat produces an ultrasonic sound with a frequency of 37 khz. what is the wavelength of this ultrasound, in meters?

Atoms of elements in the same group of the periodic table share the same

Which type of device enables its users to see around corners?

4. Monica stands at the edge of a circular platform that is slowly rotating on a frictionless axle. She then walks toward the opposite edge, passing through the platform's center. Describe the motion of the platform as Monica makes her trip.

Describe the relationship between force and mass when the acceleration of two objects remain constant

It is epistemically possible that a completed physics might include which of the following propositions? O Souls and other spiritual substances exist O God created the universe O Matter is unreal O All of the above

The weight of an object varies inversely with the second power of the distance from the center of Earth. The radius of Earth is approximately 4000 miles.

The chemical reaction of oxygen with other substances is called A. erosion. B. oxidation. C. exfoliation. D. acidification.

Find the net charge of a system consisting of 6.16*106 electrons and 7.68*106 protons. Express your answer using three significant figures. Qnet = 2.43*10-13 C