It is important that the two metals that compose a bimetallic strip have

A) different conductivities.
B) different rates of expansion.
C) equal thicknesses.
D) all of the above
E) none of the above


Answer: B

Physics & Space Science

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Fill in the blank(s) with correct word

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A set of twins, Andrea and Courtney, are initially 10 years old

While Courtney remains on Earth, Andrea rides on a spaceship which travels away from Earth at a speed of 0.60c for five years (as measured by Courtney), then immediately turns around and comes back at 0.60c. When Andrea returns, Courtney is 20 years old. How old is Andrea upon her return? A) 10 y B) 12 y C) 15 y D) 18 y E) 20 y

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What is the purpose of qualitative analysis?

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In the two-slit experiment, for the condition of bright fringes, the value of m = +4 corresponds to a path difference of

A) 4? B) 3? C) 2? D) ? E) (1/2)?

Physics & Space Science