Which type of wave requires no medium?

ultrasonic wave

water wave

light wave

sound wave

Which is not a categories of development in a lifespan? physical, informational mental, emotional

A car starting from a standstill accelerates at a rate of 4 meters per second squared. how far, in kilometers, will the car travel in 20 seconds A. 0.8km B. 800km C. 40km D. 1,600km

How do you calculate the speed of a falling object?

An object accelerates in a direction that is always perpendicular to its motion. what is the effect if any of the acceleration on the objects speed and direction

Which of these results from the particles of gases being farther apart than the particles of liquids? A. Gases take the shape of their containers but liquids do not. B. Liquids fill the volume of their containers but gases do not C.

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