The following laboratory tests are performed on aggregate samples:a. Specific gravity and absorptionb. Soundnessc. Sieve analysis test. What are the significance and use of each of these tests (1 point each)?

The bar of prob. 5/82 is repeated here. the ends of the 0.4-m bar remain in contact with their re- spective support surfaces. end b has a velocity of 0.5 m/s and an acceleration of 0.3 m/s2 in the di- rections shown. determine the angular accelera- tion of the bar and the acceleration of end a.

The frequency of the fundamental of the guitar string is 320 hz. at what speed v do waves move along that string?

Wavelength of 125 meters is moving at a speed of 10 m/s. what is it's frequency?