Which objects play the roles of the sun earth and moon

Radium-226 is unstable. What is the process that allows the nucleus of radium-226 to become more stable? Question 14 options: A. ionic bonding B. radioactive decay C. hydrogen bonding D. covalent bonding E. nuclear fusion

Which of the following parts of the eye is located at the back of the eye, receives focused light waves from the lens, and is composed of tiny, light-sensitive nerves? A. the retina B. the cornea C. the convex lens D. the optic nerve

What is the rule of calculation of elastic potential energy?

A liquid mixture of water and alcohol has a density of 900kg/m3. find the mass of alcohol in one litre of the mixture

Does clay have more particles than sand or silt?

Teens realize that things may be "shades of gray" after they enter Piaget's social stage. identity crisis stage. menarche stage. formal operational stage.

Technician A says that fractured rods have a unique mating surface and that only the cap that was fractured is the one that will fit that rod. Technician B says that a powdered metal rod is less expensive, lighter, and as strong as a forged rod.

What is the expected wavelength (in cm) of 10.5 ghz microwaves in free space?

There are 5,280 feet in 1 mile and 12 inches in one foot. How many inches are in a mile?

An anion is an atom that has lost electrons. True or False?