A ______________material is one that breaks without any significant permanent deformation and with little absorption of energy.

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


brittle

Physics & Space Science

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A long cylindrical wire (radius = 2.0 cm) carries a current of 40 A that is uniformly distributed over a cross section of the wire. What is the magnitude of the magnetic field at a point which is 1.5 cm from the axis of the wire?

a. 0.53 mT b. 28 mT c. 0.30 mT d. 40 mT e. 1.9 mT

Physics & Space Science

Emission is called fluorescence if the decay time is less than _________ seconds.

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

Physics & Space Science

A certain pendulum consists of a 1.5-kg mass swinging at the end of a string (length = 2.0 m). At the lowest point in the swing the tension in the string is equal to 20 N. To what maximum height above this lowest point will the mass rise during its oscillation?

a. 77 cm b. 50 cm c. 63 cm d. 36 cm e. 95 cm

Physics & Space Science

perpendicular to the jet’s path from left to right, which part of the airplane becomes negatively charged?

A. Its nose B. Its tail C. Its top D. Its bottom E. Its left wing F. Its right wing T. (No part becomes charged.)

Physics & Space Science