#### The Fate of Stars After They Burn Out

What kind of stars eventually become white dwarfs? What kind eventually become supernovae? What will be the ultimate fate of the sun? Why?

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What kind of stars eventually become white dwarfs? What kind eventually become supernovae? What will be the ultimate fate of the sun? Why?

When we look at stars in the sky, we see a wide range of brightness. What factors determine how bright a star will be?

A 50 g ball of puty moving with a velocity of 3.0 m/s has an inelastic collision head on with a stationary mass of 50 g and sticks to it. find the velocity of the mass and putty after the collision a. 1.7 m/s b. 1.1 m/s c. 1.5 m/s d. 1.3 m/s

A child in danger of drowning in a river is being carried downstream by a current that flows uniformly with a speed of 2.5 km/h. The child is 0.6 km from shore and 0.8 km upstream of a boat landing when a rescue boat sets out. a) If the boat proceeds at its maximum speed of 20 km/h with respect to the water, what heading relative to the shore should the boatman take? b) What angle does the boat velocity v make with the shore? c) How long will it take the boat to reach the child?

1. The angular displacement of a human centrifuge, of length 30 ft, is given by (theta)= 4[t + 30*e^(-.03t)-30]radians where t is in seconds and and t=0 is start up. If the passenger loses consciousness at an acceleration of 10g's determine the time this would occur. Verify the tangential acceleration is small compared to the radial acceleration. 2. A rocket is fired vertically and achieves a velocity of 27000 km/hr at an altitude of 350km where it's fuel is exhausted. How high does the rocket reach before starting it's decent? 3. Just after being struck by a club a golf ball has a velocity of 125ft/sec at an angle of 35 degrees above the horizontal. Where is the point of ...