A car accelerates from 5.0 m/s to 21 m/s at a constant rate of 3.0 m/s2 How far does it travel while accelerating?
A) 41 m B) 69 m C) 117 m D) 207 m
B
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In a turbine blade with grain boundaries parallel to the blade axis, the shear stress on the grain boundaries of a rotating turbine blade is equal to _________.
Fill in the blank(s) with the appropriate word(s).
Which type of electromagnetic wave is the shortest?
a. radio b. X-rays c. visible light d. gamma e. microwave
All large astronomical telescopes built since the start of the 20th century have been _______________ telescopes
Fill in the blank(s) with correct word
Which of the following would not increase the radius of the dark fringes caused by the Newton's Rings effect?
1.increase the radius of curvature of the lens and decrease its index of refraction 2.increase the wavelength of the light and the radius of curvature of the lens 3.use a lens with a larger index of refraction and smaller radius of curvature 4.use a lens with a smaller index of refraction and increase the wavelength of the light