How is a star color related to its temperature?

What does critical mass depend on

What is the speed of a car that traveled 500 meter in 20 seconds?

Which of the following types of spectra have dark lines? a. emission spectra b. absorption spectra c. continuous spectra d. noncontinuous spectra

What characteristic of an atom determines its properties A. arrangement of protons in the nucleus B. the arrangement of electrons around the nucleus C. the atomic number of neutrons D. the atomic mass

All household circuits are wired in parallel. A 1120-W toaster, a 310-W blender, and a 50-W lamp are plugged into the same outlet. (The three devices are in parallel when plugged into the same outlet.

Calculate the gravitational force on the washers using the formula F = ma where a = 10 m/s2 and m is the mass of the washers. Use the mass of the washers in kilograms. Record your calculations, to no more than three decimal places, in Table D.

Why does it take 10 times more energy to grow a kilogram of beef than a kilogram of wheat?

If a force of 40 newtons moves a cart a distance of 9 meters, the work done is Nm. If the same force moves the same cart three times that distance, the work done is Nm. NextReset

1. Identify this mystery element: I am very reactive, I desperately want to get rid of my electron. When I make a compound with Chlorine it is table salt. Who am I? 2. Identify this mystery element. I am amazing and have no cares in the world.

Since all stars begin their lives with the same basic composition, what characteristic most determines how they will differ? 1. location where they are formed 2. time they are formed 3. luminosity they are formed with 4. mass they are formed with 5.