When a train makes a curve, a tapered wheel rim is able to
A) cover different distances per revolution.
B) maintain a fixed rotational speed.
C) reduce differences in angular speeds.
Answer: A
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A 17 mm wide diffraction grating has rulings of 530 lines per mm. Light is incident normally on the grating. The longest wavelength that forms an intensity maximum in the fifth order is closest to:
A) 377 nm B) 352 nm C) 402 nm D) 427 nm E) 452 nm
The lithospheric plates are believed to be put into motion by the driving force of ______________ cells in the asthenosphere
a. cyclonic b. convection c. subduction d. none of these
A capacitor in an RC circuit is charged, storing energy 1.25 mJ. What is the time required to discharge this capacitor, as compared to the time required to discharge an identical capacitor in an identical RC circuit which has stored 2.5 mJ?
A. twice the time B. half the time C. the same time D. the answer depends on the values of R and C.
The size of the volcanoes on Mars indicate that Mars has a(n) ____________________ crust than Earth
Fill in the blank(s) with correct word