Which of the following increases the internal energy of a solid metal rod?

a. raising it to a greater height
c. having the rod conduct heat
b. throwing it through the air
d. having the rod absorb heat


D

Physics & Space Science

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If low density is the primary design requirement, what class of material discussed in this chapter would you first investigate for suitability?

What will be an ideal response?

Physics & Space Science

Light of wavelength 687 nm is incident on a single slit 0.75 mm wide. At what distance from the slit should a screen be placed if the second dark fringe in the diffraction pattern is to be 1.7 mm from the center of the diffraction pattern?

A) 0.39 m B) 0.47 m C) 0.93 m D) 1.1 m E) 1.9 m

Physics & Space Science

Which of the following has not been detected around other stars in the Galaxy?

A) a collapsing nebula of gas B) flattened, spinning disks C) jovian planets D) asteroids E) strong stellar winds

Physics & Space Science

An automobile (m = 1.00 × 10^3 kg) is driven into a brick wall in a safety test. The bumper behaves like a spring (k = 5.00 × 10^6 N/m), and is observed to compress a distance of 3.16 cm as the car is brought to rest. What was the initial speed of the automobile?

Physics & Space Science