Pulsars are created in a Type I supernova
Indicate whether the statement is true or false
FALSE
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In a certain gas the molecules are 5.0 × 10?9 m apart on average, have a mean free path of 5.0×10?6 m, and have an average speed of 500 m/s. The rate at which a molecule has collisions with other molecules is about:
A. 10?11 s?1 B. 10?8 s?1 C. 1 s?1 D. 10^8 s?1 E. 10^11 s?1
A space station in the form of a large wheel, 120 m in diameter, rotates to provide an "artificial gravity" of 3.00 m/s2 for persons located at the outer rim. Find the rotational frequency of the wheel (in revolutions per minute) that will produce this effect.
What will be an ideal response?
When we apply the Lorentz factor ? to momentum, we
A) multiply by ? as with the equation for time dilation. B) multiply by the reciprocal of ?. C) find it does not apply.
A beaker is filled to the 500 ml mark with alcohol. What increase in volume (in ml) does the beaker contain when the temperature changes from 5° C to 30° C? (Neglect the expansion of the beaker, evaporation of alcohol and absorption of water vapor by alcohol.) balcohol = 1.12 × 10^-4/°C
a. 0.47 b. 0.93 c. 1.4 d. 1.7 e. 2.5