For an object to remain at rest, which of the following must be true?

The forces on it are balanced

There is not friction

Gravity does not act on it

The onject has no mass

Dr. Garcia is conducting an experiment to see how caffeine affects a person's brain activity. She asks ten test subjects to drink a cup of tea and tells them that there is caffeine in it.

How do activated charcoal water filters work

Why don't planets crash into the Sun from the pull of gravity?

Match these items. 1. an atom that has gained or lost electrons ion 2. produces OH - ions when added to water acid 3. produces H + ions when added to water base

What reaction would the chemical equation CH4 + 2O2 →2H2O + CO2 represent? combustion of methane replacement of methane formation of methane decomposition of methane

Which orbitals from a pi bind?

Examples of two substances being mixed and the

Why is tin foil a good inslator

A student finds a container of gases in the laboratory classroom with a total pressure reading of 655 mmHg. The label on the container describes the contents as 5.00 g of carbon dioxide gas and 3.75 g of helium gas.

A. Which statement accurately describes part of the dissolving process of a polar solute in water? B. Solute molecules repel water molecules. C. Water molecules surround solute molecules. D.