Spiral galaxies have a central core from which curved arms spiral outward.

true or false

Look at the circuit diagram. What does the diagram show? one battery, two light bulbs, and three resistors one battery, two switches, and three light bulbs one switch, one resistor, and three light bulbs one switch, one light bulb, and three

A 75.0kg person stands on a scale in an elevator. What does the scale read (in kg) when the elevator is (a) at rest, (b) ascending at a constant speed of 3.0m/s, (c) falling at 3.0m/s, (d) accelerating upward at 3.

Who built and flew the first airplane? Alexander Graham Bell Henry Ford the Wright brothers Thomas Edison

How many days are between the first quarter and full moon phases

True or false? Radiant energy is generated by a petunia on Tuesday.

Potential energy and kinetic energy are created when work is done to change a position (PE) or a state of motion (KE). Ignoring friction, how does the amount of work done to make the change compare to the amount of PE or KE created? a.

The wavelength of a wave is the wavelength of a wave is how strong the wave is. equal to the speed of the wave times the wave's frequency. the distance between where the wave is emitted and where it is absorbed.

What is a carbon whip?

2 A scientific theory is

Explain the roles of Earth's own energy sources and solar energy in the rock cycle