The surface temperature of a star can be estimated based on the star's

a. size.

c. age.

b. color.

d. mass.

What is pressure of water to adapth of 50 below fress water lakonneglecting atmosphere pressure

What is NOT an example of Reflection

Explain what is a solar wind?

Which fossil fuel is used the most for energy production? a. coal b. oil c. natural gas d. uranium

Bob is coming toward you at a speed of 75 km/hr. You throw a baseball in his direction at 75 km/hr. What does he see the ball doing?

What is the weight of an with a mass of 32kg

The index of refraction of silicate flint glass for red light is 1.620 and for violet light is 1.660. A beam of white light in this glass strikes the glass-air interface at a 25.50∘ angle of incidence and refracts out into the air.

The locations of the major pressure and wind systems on the earth:

Which statements correctly describe the properties of heat? Select all that apply. Heat is an essential component of life on Earth. Heat is energy that flows from one object to another. Heat flows from a hotter object to a colder one.

A book is sitting on a table at rest. Which of the following best describes the forces acting on the book? A.