A quasar 10 billion light years from earth appears the same
A quasar 10 billion light years from Earth appears the same brightness as a star 5.9*10^4 light years away. How does the power ouput of the quasar compare with that of the star?
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According to the 2010 census, the population of Nebraska was 1.8 x 10^6 people. Which state had a smaller population?
Three forces are applied to the bar. Determine the normal and shearing stresses at (a) point a, (b) point b, (c) point c.Assuming that the 750-N force is directed vertically upward.
Estimate the discharge in a rock-bedded stream (d84=30cm) that has an average depth of 2.21m, a slope of 0.0037, and a width of 48m. Assume ks=d84.
You swing a 3.25-kg bucket of water in a vertical circle of radius 0.960m. Find the tension in the rope tied to the bucket at the top of the circle
A quasar 10 billion light years from Earth appears the same brightness as a star 5.9*10^4 light years away. How does the power ouput of the quasar compare with that of the star
The area shown is revolved about the x axis to form a homogeneous solid of revolution of mass m. Using direct integration, express the mass moment of inertia of the solid with respect to the x axis in terms of m and h
A proton and an alpha particle (q = +2e, m = 4 u) are fired directly toward each other from far away, each with an initial speed of 0.012c. What is their distance of closest approach
At the top of a 30m hill is a 5kg mass. It is loaded into a spring cannon. What is the ration of Energy before/Energy after
A 2kg mass is loaded into a spring cannon. The cannons spring has a constant k=4000N/m and the spring is compressed 0.8m. The mass is initially at rest. what is the initial velocity of the mass
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