What is meant when it is said that stars have a life cycle?

Stars produce living things.

Stars travel in circular orbits during their lives

Stars are born, mature, and eventually die.

Stars move about in their galaxies

When observing a specimen in a microscope you are told that the total magnification of the specimen is 630x assuming you are using a standard occular lens with a magnification of 10x what is the magnification of the objective lens?

Pre-Test Active 1111 Which statements describe Rutherford's model of the atom? Select all that apply, The atom is mostly empty space, The atom cannot be divided into smaller particles, Electrons orbit around the center of the atom, The atom's

How much does force increase if mass is doubled

A spring with a spring constant of 1200 N/m has a 55-g ball at its end. The energy of the system is 5.5J. What is the amplitude of vibration?

1. What is a reasonable distance between two cities? (1 poi 200 km 200 m 200 cm O 200 mm

What two factors determine how fast weathering occurs

A sound that's produced by a single wave at a constant frequency and with no overtones is called

Which of the following is ignored when determining the relative mass of atoms? protons nucleus electrons. neutrons

Gamma radiation can be significantly reduced by ... A sheet of paper Air A 3 mm thickness of aluminium Several cm of lead

Why is it possible to remove a paper without moving the object on it. (apply newton's law)