Acylindrical rod initially has length 3.0 meters and diameter 6.0 cm. due to thermal expansion, this bar expands by the same fractional amount in each direction. specifically, \frac{\delta r}{r}=δ r r = 0.006 . the cross sectional area a of a cylinder is given by: a=\pi\: r^2\: a = π r 2, where rr is the radius of the cylinder. what is the cross sectional area (in inches2 ) of this cylinder after the expansion has occurred ?

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.

Which levels of government establish and implement educational requirements for minors

Debris produced by mining is called