The Jurassic period is part of the ______________ era
Fill in the blank(s) with correct word
Mesozoic
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A flask contains a mixture of argon and neon gases at a stabilized temperature. The root-mean-square speed of the argon gas is determined to be 1.21 km/s
What is the root-mean-square speed of the neon gas? The atomic mass of argon is 39.95 g/mol, and that of neon is 20.18 g/mol.
Doppler Effect: A car approaches you at a constant speed, sounding its horn, and you hear a frequency of 76 Hz. After the car goes by, you hear a frequency of 65 Hz. What is the frequency of the sound emitted by the horn? The speed of sound in the air is 343 m/s.
A. 68 Hz B. 69 Hz C. 70 Hz D. 71 Hz E. 72 Hz
Two different masses have equal, non-zero kinetic energies. The momentum of the smaller mass is
A) smaller than the momentum of the larger mass. B) larger than momentum of the larger mass. C) equal to the momentum of the larger mass. D) zero. E) There is not enough information to answer the question.
Which of the following is not a characteristic of superplasticity?
(a) Grains elongate in the direction of flow. (b) Temperatures are above half of the melting temperature. (c) The material is highly strain-rate sensitive. (d) A strain rate of approximately 10-3 s-1.