In what type of reaction do two or more reactants combine to form a product?

The primary source of most of the moisture for the earths atmosphere is

How much force is required to accelerate a 5 kg mass at 20m / s2?

What would happen if you drop and egg

How many lines/cm should be present in a diffraction grating to produce the first bright fringe at an angle of 4o when yellow light of wavelength 580 nm passes through it?

What are the SI base units for length and mass? kilometer and gram meter and gram meter and kilogram kilometer and kilogram

When a person stands on a rotating merry-go-round the frictional force?

A planet is discovered orbiting around a star in the galaxy Andromeda at four times the distance from the star as Earth is from the Sun.

Measurements of how orbital speeds depend on distance from the center of our galaxy tell us that stars in the outskirts of the galaxy. True or False

Identify what is required to calculate the atomic number and atomic mass of an element

What device is used to measure the current in a circuit