Which chemical formula shows how atoms of the elements calcium (ca) and sulfur (s) would join together ionically? a. cas b. ca2s c. cas2 d. ca2s3

Explain the advantages and disadvantages of using concentric circles in describing the solar system to an elementary school child.

If Jeff is sitting in a gaming rocker chair reading instructions is any work being done

A well-stocked first-aid kit should include what type of product for cleaning wounds? A. Aloe vera B. Benzoin C. Witch hazel D. Antibiotic ointment

Which ranks these materials by the attraction between their atoms from the weakest to the strongest?

What happens when an object with a higher density is placed in a container with a lower density liquid?

Volume can be measured in liters or cubic meters. a. T b. F

A spring with a spring constant of 1200 N/m has a 55-g ball at its end. The energy of the system is 5.5J. What is the amplitude of vibration?

Force F1 acts on a particle and does work W1. Force F2 acts simultaneously on the particle and does work W2. The speed of the particle does not change. Which one of the following must be true? a. W1 is zero, and W2 is positiveb. W1 = - W2c.

The amplitude of a sound is the Group of answer choices frequency of the sound. magnitude of displacement of a sound pressure wave. psychological aspect of sound related to timbre. amount of sound energy falling on a unit area.

Air at 38°C and 97% relative humidity is to be cooled to 18°C and fed into a plant area at a rate of 510 m/min. a. Calculate the rate (kg/min) at which water condenses. b.