Prominent dust lanes are associated with a. Spirals, Generally b. Face-on galaxies only c. Ellipticals d. Edge-one galaxies only e. Lenticulars

Me pl give an example of a collision in real life. use the law of conservation of energy to describe the transfer of momentum. be sure and discuss the momentum before and after the collision occurs. you will need at least 3 sentences to thoroughly answer this question.

When the displacement of a mass on a spring is 12a the half of the amplitude, what fraction of the mechanical energy is kinetic energy? at what displacement, as a fraction of a, is the mechanical energy half kinetic and half potential?

What is a subatomic particle with a negative charge and very little mass?