What is one advantage of using primary source when doing research on an experiment

Which two particles are found in the center of an atom

Who invented the steam engine? A. James Watt B. Eli Whitney C. Thomas Edison and Benjamin Franklin D. Thomas Savery and Thomas Newcomen

A cat chases a mouse across a 0.65 m high table. The mouse steps out of the way, and the cat slides off the table and strikes the floor 2.7 m from the edge of the table The acceleration of gravity is 9.81 m/s2.

a gas volume of 100.0 ml at a pressure of 780 mmhg. whats the new volume of the gass when its pressure is increased to 880 mmhg

Explain why mass is constant everywhere

When the volume increased, what happened to the density?

8. Chemical weathering occurs more rapidly in what kind of climates? A. Desertlike B. Cold with high snowfall amounts C. Cool and dry D. Warm with abundant rainfall

Recoil is noticeable if we throw a heavy ball while standing on a skateboard. If instead we go through the throwing motion but hold onto the ball, without friction effects our net recoil will be A) zero. B) the same as before.

If an electromagnet is used to pick up nails and other metal objects, what happens when the current is turned off?

An electron enters a region of uniform perpendicular en and bn fields. it is observed that thevelocity nv of the electron is unaffected. a possible explanation is: