You need to design a wheel for testing purposes such that its rim will have an acceleration of 1.5 g when the rim is moving at 37 m/s while spinning. What should be the diameter of this wheel?
What will be an ideal response?
190 m
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Humanity is very new to the Universe
a. True b. False Indicate whether the statement is true or false
Applications to Astronomy: The earth's orbit has a mean radius of 1.5 × 108 km. Over a six-month period, the apparent position of a particular star varies by 0.00014° due to parallax. How many kilometers is this star from Earth?
A. 1.2 × 1011 km B. 1.2 × 1014 km C. 1.2 × 1017 km D. 1.2 × 1020 km
If the polarizing angle for diamond is 67.5°, what is the index of refraction of this material?
a. 2.00 b. 2.20 c. 2.41 d. 2.65
Suppose you measure the parallax angle for a particular star to be 0.1 arcsecond. The distance to this star is
A) 10 light-years. B) 10 parsecs. C) 0.1 light-year. D) 0.1 parsec. E) impossible to determine.