Which of the following processes would be the most likely process for making continuous-fiber composite material for a Formula 1 race car chassis?
(a) Resin transfer molding
(b) Vacuum bagging
(c) Pultrusion
(d) Filament winding
(b) Vacuum bagging
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Find the equation 
that fits the following data.
a. 
b. 
c. 
d. 
Hydrogen has an absorption line at a rest wavelength of 656.28 nm. This line is shifted to 656.50 nm in the spectrum of a star. How fast is the star moving? Hint: The Doppler shift formula is = where the speed of light is c ? 300,000 km/
A) about 100 km/s away from us. B) about 100 km/s toward us. C) about 1000 km/s away from us. D) about 1000 km/s toward us.
When the distance between the two charges is doubled, the force between them is
A) doubled. B) quadrupled. C) reduced by a factor of 3. D) reduced by a factor of . E) reduced by a factor of 4.
A mass on a spring vibrates in simple harmonic motion at a frequency of 4.0 Hz and amplitude of 8.0 cm. If the mass of the object is 0.25 kg, what is the spring constant?
a. 40 N/m c. 126 N/m b. 87 N/m d. 158 N/m