Which can a drop of liquid mercury can be described as?

A. A pure substance and a compound

B. An impure substance that is reactive

C. An impure substance that is unreactive

D. Pure substance and an element

Substances with weak intermolecular forces tend to be in the gas state at room temperature. moderate intermolecular forces are required to liquefy or solidify a substance at room temperature.

Jamie pushes a book off a table. The push is an example of a contact force because A. Jamie used energy. B. Jamie had to touch the book to move it. C. the book fell to the floor. D. the book was on a flat surface.

A soap bubble usually pops because some part of it becomes too thin due to evaporation or drainage of fluid. The change in thickness also changes the color of light the bubble reflects. Why?

Imagine that someone is walking across a carpeted room and then touches a metal doorknob. Describe what happens when a doorknob is touched if there's a buildup of static electricity.

The potential difference between a pair of oppositely charged parallel plates is 398 V. If the spacing between the plates is doubled without altering the charge on the plates, what is the new potential difference between the plates?

A spring has a spring constant of 256 n/m. how far must it be stretched to give it an elastic potential energy of 48 j?

How does the frequency of an electromagnetic wave compare with the frequency of the vibrating electrons that produce it?

A 10 kg box is pushed with a force of 20N. What is the box's acceleration? 200 m/s 2 m/s2 2 m/s 200 m/s2

Which statement is true about planets with longer orbits in the solar system? A. They have longer periods of revolution. B. They are smaller in size. C. They have less distance to travel for one revolution. D. They have longer seasons

Atmospheric conditions near a mountain range are such that a cloud at an altitude of 2.00 km contains 3.20 ✕ 10^7 kg of water vapor. How long (in years) would it take for a 2.