How long after the Big Bang did nucleosynthesis, the combining of protons and neutrons together to form nuclei, begin to occur?
A) 3 minutes B) 10-2 seconds C) 5000 years D) 109 years
A
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The moment of inertia of a rod being rotated about one end is 1/3 
What is the moment of inertia of a rod of length L and mass M being rotated about a point located 0.300 L?
A. 0.123 
B. 0.198
C. 0.205
D. 0.240
E. 0.300
Imagine a downhill race between four objects each of mass M. One object such as a skier (P) is best modeled as a particle (shown as a small flat object) translating down the hill. The other objects are modeled as a solid cylinder (C), hoop (H) and a solid sphere (S) each of radius R rolling down the hill without slipping. All four objects start from rest a t a height h. Assuming mechanical energy losses due to friction may be ignored, determine the order in which the objects cross the finish line. Use their letter designation: P, C, H and S and arrange them from first to last to arrive at the finish line.
A European sports car dealer claims that his product will accelerate at a constant rate from rest to a speed of 100 km/hr in 9.00 s. What distance will the sports car travel during the 9.00 s acceleration period?
Starting from the Big Bang, briefly explain how our solar system came to contain the chemical elements necessary to make Earth and living organisms
What will be an ideal response?