Which elements make up the empty spce in the universe?

Which describes the motion of the media for a surface wave? A. The motion is parallel to wave direction B. The motion is both parallel and perpendicular to wave direction. C. The motion is perpendicular to wave direction.

A lightbulb has an efficiency of 8.2%. How much light energy (not heat energy) is generated by the bulb every second if the bulb has a power of 21 W?

What is a Kelvin (K) ?

How long does it take the statue to reach the ground?

What is the role of the midbrain, and which part of the midbrain is important for arousing the forebrain?

The Sun transfers light energy that is transformed into what kind of energy in plants?

The siren of a fire engine that is driving northward at 30.0 m/s emits a sound of frequency 2000 Hz. A truck in front of this fire engine is moving northward at 20.0 m/s.

If an atom has 34 protons and 40 neutrons, what is the mass number?

The atomic mass of an atom (in amu) is equal to Question 11 options: A. the total number of its protons, neutrons, and electrons B. the total number of electrons C. the total number of protons D. the total number of its protons and neutrons E.

12. Which of these describes the gravitational force from a planet?" O large and pulls objects toward itself small and pulls objects toward itself O small and pushes objects away from itself O large and pushes objects away from itself