1. high-mass main-sequence stars have a more distant and wider than low-mass stars.

Subtract these measurements, using significant digit rules: 43.278 kg - 28.1 g = kg

A double star has two components of equal brightness, each with a magnitude of 8.34. if these stars are so close together that they appear to be one object, what is the apparent magnitude of the combined object

As the temperature increases the number of effective collisions between reacting particles in a chemical reaction A. initially increase, them decreases B. Decreases C. Initially decreases, then increase D. Increases only

What is a voltmeter?

Magnectic striping is evidence of?

What are starburst galaxies and what do they have to do with galaxy evolution?

Six light bulbs are connected in series with a 9.0 volt battery. What is the voltage across each bulb?

Can an object travel at the speed of light? Why or why not?

It's a hot and sunny day and you decide to go for a drive. When you open your car door, it's a lot hotter than outside. Why is that

Which compound is composed of oppositely charged ions