What do elements in the first two columns of the periodic table have in common? A. They have two valence electrons.

B. They tend to lose electrons to gain stability.

C. They react strongly with the alkali metals.

D. hey do not react with halogens.

A parallel-plate capacitor consists of a set of two parallel plates of area A separated by a distance d. This capacitor is connected to a battery that maintains a constant potential difference across the plates.

What happens when a ray of light is directed at a mirror, a glass block and a prism?

How is motors and generators alike

A famous physics tale is about a rich man who was found dead. He was stuck in the middle of a frozen lake where the ice was completely frictionless, making it impossible to walk.

An ocean wave has a length of 12.0 m. A wave passes a fixed location every 3.0 s. What is the speed of the wave?

Which statement about ammeters and voltmeters is true? A. Current and voltage are the same throughout a circuit so where you place the ammeter and voltmeter doesn't matter. B.

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?