When at rest, a ruler has a length of 12.0 inches. how fast (in m/s) must the ruler fly past you in order for it to shorten to 6.00 inches in length? hint: to use scientific notation within canvas, use e+ instead of 10^ (ex. 3.00×108 = 3.00e+8).

The plum pudding model of the atom states that ?

You are given a vector a = 125i and an unknown vector b that is perpendicular to a. the cross-product of these two vectors is a × b = 98k. what is the y-component of vector b?

Engineers find a new metal that is stronger than steel but much lighter. this material is also significantly cheaper than what is currently used for most aircraft, available in large quantities, and easy to manufacture. the engineers are excited because this new material will lower the costs of buying and operating airplanes for companies. what is probably the best step for the engineers to make next?