The predominant method of heat transfer to a cold drink held in an evacuated bottle (a thermos) is by ________

a. conduction b. convection c. radiation


c

Physics & Space Science

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_________is the major alloy element in the highest-strength copper alloys.

Fill in the blank(s) with the appropriate word(s).

Physics & Space Science

A vertical spring system with a bob having mass M is set into motion with amplitude A. When the bob is pulled instead to move with amplitude 2A, the following can be concluded:

A. The period is half as large as before B. The period is unaffected C. The period is twice as large as before D. The period is 0.7 times as large as before E. The period is 1.4 times as large as before

Physics & Space Science

The LEAST significant evolutionary changes in human beings over the past 10,000 to 40,000 years have been

A) biological B) political C) technological D) cultural

Physics & Space Science

A proton, moving in a uniform magnetic field, moves in a circle perpendicular to the field lines and takes time T for each circle. If the proton's speed tripled, what would now be its time to go around each circle?

A) 9T B) 3T C) T D) T/3 E) T/9

Physics & Space Science