Be sure to organize your topics into separate discussions.

a. birth, life, and death of a main sequence star

b. supergiants

c. supernova

d. neutron star

e. pulsar

Identify whether the following statements describe a change in acceleration. Explain your response.

If an air conditioning compressor weighing 300 lb had to be lifted 4 ft to be mounted on a base, how many ft-lb of work must be accomplished?

A student uses 150 N to push a block of wood up a ramp at constant velocity of 2.6m/s. What is his power output?

Which phrase is the best definition of a compound direct object? a. two or more adverbs that modify two or more different verbs b. two or more direct objects following the same verb phrase c. a prepositional phrase after a verb phrase d.

Bettina spoke into a microphone during the school play to increase the sound of her voice so the audience could hear her speak. The loudness of Bettina's voice was changed by what type of energy?

What type of intermolecular forces would you expect to find in a pure liquid sample of carbon tetrachloride?

Describe how rockets lift off.

Which of the pollutants shown in Figure 4-2 are considered to contribute to the pollution problem known as acid precipitation?

A billiards ball B rests on a horizontal surface and is struck by another billiards ball A of the same mass m = 0.2 kg. Ball A is initially moving at 18 m/s and is deflected 28° from its original direction. Assume the collision is elastic.

A model rocket is fired vertically from the ground with a constant acceleration of 45.3 m/s2 for 1.46 s at which time its fuel is exhausted. What is the maximum height (in m) reached by the rocket?