Write a definition about physical science

Measures the pressure of (water being) 1000kg/m3 density and 40 Kg weight on its base.

When forming a bond, an atom that has 3 electrons in its second shell and a filled first shell will?

The Egyptians and Greek shared which belief about preparing for important dreams

Why cannot always use body parts to find out the correct measurement of an object?

A wave has a wavelength of 45 meters and a period of 9.0 seconds. What is the frequency of the wave?

It is difficult to lift a heavy stone than the lighter one on the earth, why?

The vapor pressure of ethanol at 25 degrees C is 7.83 kPa. Calculate the vapor pressure in atm. Round answer to 3 significant digits.

According to Newton's second law of motion acceleration or an object depends upon the ___ of the object and the ___ Acting on it. I'm confused on what the blanks are. I can't find them.

What is the concentration of H + ions at a pH = 7?

Suppose that Paul D. Trigger fires a bullet from a gun. Will the speed of the bullet leaving the muzzle will be the same as the speed of the recoiling gun? Explain.