Descirbe the reactivity of alkaline-earth metals

Which form of cell division creates the sperm and egg, resulting in half of the chromosomes as the other cells?

A test charge is introduced into the electric field of a charge. It feels a force of 2F where the electric field is 2E. What would the force on the test charge be where the electric field is 8E? Somebody explain how you would get the answer.

How will the world end?

All life that we know of is based on carbon. Carbon's ability to form many chemical bonds is an important characteristic that allows it to form the basis of life.

A 664-turn circular-loop coil 18 cm in diameter is initially aligned so that its axis is parallel to Earth's magnetic field. In 3.5 ms the coil is flipped so that its axis is perpendicular to Earth's magnetic field. If an average voltage of 0.

What type of energy is formed when chemical bonds are broken? A. Chemical energy B. Thermal energy C. Radiant energy D. Light energy

The liquid contained in batteries that conducts electric charge is called the: solution, electrolyte, suspension, colloid

Someone jumped from a high altitude at 31,000m above the earth. he freefalled for 4 min and 36 secs with top speed of 988 mph

What does the law of reflection mean?

Compared with the peak wavelength given off by the sun, what is the peak wavelength given off by a hotter star? A.) shorter in wavelength and higher in energy B.) shorter in wavelength and lower in energy C.