Recall that Hubble's law is written v = H0d, where v is the recession velocity of a galaxy located a distance d away from us, and H0 is Hubble's constant. Suppose H0 = 20 km/s/Mly. How fast would a galaxy 1000 Mly distant be receding from us?
A) 20,000 km/s
B) 20 Mly/s
C) 0.20 times the speed of light
D) 50 km/s
E) 20 km/s
A
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, a pendulum that takes 2.00 s for a complete swing back and forth has a length of 0.993 m. What is the value of g in m/s2 at a location where the length of such a pendulum is 0.970 m?
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(a) Develop an equation for the time at which the plastic (viscous) strain is equal to the elastic strain in a Maxwell solid (series spring and dashpot) subject to a stress (?) where the viscous component is Newtonian (n=1).
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Compare the amount of time a 20 solar mass star will stay on the main sequence to the length of time its iron core can exist
What will be an ideal response?