Long distance bus service is cheaper per passenger than urban bus transit. Explain as many of the factors that make this so as possible
What will be an ideal response?
There is one most important factor: There is much less starting and stopping on
an intercity trip. Speeding up and slowing down make the local bus much less energy
efficient.
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A starburst galaxy is a galaxy that:
A) is undergoing a rapid surge of white dwarf explosions. B) is undergoing a rapid surge of star formation. C) has never interacted with another galaxy. D) is undergoing a rapid burst of supernovae explosions.
Calculate the radius in nanometers of the Bohr orbit of a hydrogen atom's electron with n = 6
Why have more people seen total lunar eclipses than total solar eclipses?
What will be an ideal response?
Compared to its neutral atom, an ion has the same number of
A) protons and neutrons B) protons but a different number of neutrons C) protons but a different number of electrons D) neutrons but a different number of protons