In an atom, almost all of the mass is concentrated in a tiny nucleus because

How long is a WiFi wavelength? A) 10 cm B) 12 cm C) 15 cm D) 20cm

2. What holds ionic solids together? A. electrostatic attraction B. orbital overlap C. pi and sigma bonds

Explain why the brakes of a car get much hotter than the brakes of a bicycle?

Whats the excreation of living organsims

Define average speed velocity

Consider this statement: Air is matter. Which facts best support the statement? A. Balloons can be filled with air. B. Air is essential for life to exist. C. Air has mass. D. Air is not an element. E. To float on air is to be happy. F.

Hydroelectric power uses: wind water coal the sun

Two lightweight metal spheres are suspended near each other from insulating threads. One sphere has a net charge; the other sphere has no net charge. The spheres will: A. Attract each other B. Exert no electrostatic force on each other C.

Read the given list of organisms. squirrel, zebra, tortoise, rabbit, horse What best describes the role of these five organisms in a food web?

What are the SI units for specific heat capacity