Both spiral and elliptical galaxies seem to have dark halos of similar proportions relative to their visible matter

Indicate whether the statement is true or false


TRUE

Physics & Space Science

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What is the enthalpy of activation for viscous flow in the soda-lime glass shown in Figure 9.3, in the temperature range from 700 to 800 K?

Physics & Space Science

Which planet shows the largest variation of day and night temperatures?

A. Earth B. Mars C. Venus D. Mercury

Physics & Space Science

Consider three galaxies, Alpha, Beta and Gamma. An astronomer in Beta sees each of the other two galaxies moving away from him in opposite directions at 0.70c. At what speed would an observer in Alpha see the galaxy Gamma moving?

A) 1.4c B) 0.94c C) 0.98c D) 0.82c E) 0.70c

Physics & Space Science

Relative to a stationary observer, a moving clock

A. always runs slower than normal. B. always runs faster than normal. C. keeps its normal time. D. Any of these choice could be correct depending on the relative velocity.

Physics & Space Science