Which element's symbol could replace the question mark in

the diagram?

O boron (B)

O neon (Ne)

O rubidium (Rb)

O arsenic (As)

What is the difference between heat temperature and thermal energy?

What is a difference between a divergent boundary and a convergent boundary

Is chalk a compound or a element

A circuit is a continuous loop. a. True b. False

Calculate the force of friction that keeps an 80-kg person sitting on the edge of a horizontal rotating platform when the person sits 2 m from the center of the platform and has a tangential speed of 3 m/s.

if 100 grams is equal to 1 newton of force, and the water displaced by an object would have a mass of 40 grams, what is its buoyant force on that object?

A charge if 2 nC is placed 10cm to the right of a conducting sphere with a diameter of 2 cm. A charge of 5 nC is placed 10 nC to the left of the same sphere. determine the charge at the center of the sphere.

1) How is chemical energy transformed into potential energy?

A double-paned window has two glass panes separated by a layer of air. Why is air, rather than glass, used to fill this space?

To determine waves frequency you must know the what