Who first used the word "atomos"

Fine grains of beach sand are assumed to be spheres of radius 38.9 µm. These grains are made of silicon dioxide which has a density of 2600 kg/m3 . What is the mass of each grain of sand? Answer in units of kg. ... ?

What does an atomic number describe? The number of nuclei The number of protons The number of neutrons The number of electrons

Which of the following sequences correctly displays the energy transformation from the inside of a battery to the igniter inside a car's engine?

Which planet has no atmosphere, which prevents erosion? A. Neptune B. Uranus C. Mars D. Mercury

Which part of the electromagnetic spectrum has a lower frequency than visible light? x-rays infrared gamma rays ultraviolet

What is the most advanced life form on earth

Which EM wave is about the size of humans?

Describe how the Catapult works?

Newton's third law of motion states that the force pair acting on different objects consist of two forces that

While working on her science fair project Venus connected a battery to a circuit that contained a light bulb. Venus decided to change the light bulb to a higher resistance, but she wanted to keep the current the same.