What three elements have similar chemical properties to oxygen

What is the equation that relate electric potential (voltage) to electric field?

A ball thrown with 50N of force accelerates at 25 m/s2. What is the mass of the ball?

What is it called when a neutral object is given a temporary charge?

A gust of wind blowing east pushes against a ball. When will the wind do work on the ball?

Which of these is a measure of force? 100 newtons O 100 meters per second 100 watts O 100 joules

Electricity problem (coulomb's law)

An observer (O) spots a plane (P) taking off from a local airport and flying at a 29° angle horizontal to her line of sight and located directly above a tower (T). The observer also notices a bird (B) circling directly above her.

In order for convection to occur, you must have

Explain Newton's First Law for the following. If you walk across the room holding a ball, when should you drop it to ensure that it lands on a target? Before, after or when you are directly on the target?

In what way are all forms of potential energy the same?