What is the principal of operation of astronomical telescopes?

Which of the following statements is most accurate? A.) Warm air sinks B.) Warm air is denser than cold air C.) Warm air is less dense than cold air D.) Warm air exerts more pressure on the land than cold air

A baseball has a mass of 0.45 kg and is thrown with a speed of 25 m/s. what is the momentum of the baseball?

Hydroelectric power uses: wind water coal the sun

Rubbing your hands together warms them by converting work into thermal energy. If a woman rubs her hands back and forth for a total of 12 rubs, at a distance of 7.50 cm per rub, and with a frictional force of 45.

A 50-cm^3 block of wood is floating partially submerged in water, and a 50-cm^3 block of iron is totally submerged in water. Which block has the greater buoyant force on it? Gustify) A) The wood B) The iron C) Both have the same buoyant force.

What is the central core of hair

A star with the same mass of the sun has a newly discovered planet whose semi-major axis of 2.48 au and an eccentricity of 0.08. what is the aphelion distance of the new planet

What does a hurricane hunter do

Why is fluorine special in terms of electronegativity?

The airbag inflates and deflates quickly so