Undisturbed samples from a normally consolidated clay layer were collected during a subsoil exploration. drained triaxial tests showed that the effective friction angle was φ’ = 25°. the unconfined compressive strength, qu, of a similar specimen was found to be 133 kn/m2. find the pore pressure at failure for the unconfined compression test.

Amagnetic field applies forces on: a)static chargesb)moving chargesc)water flow

Atrain is traveling at 30.0 m/s relative to the ground in still air. the frequency of the note emitted by the train whistle is 262 hz. the speed of sound in air should be taken as 344 m/s. what frequency (f approach) is heard by a passenger on a train moving at a speed of 18.0 m/s relative to the ground in a direction opposite to the first train and approaching it? what frequency (f recede) is heard by a passenger on a train moving at a speed of 18.0 m/s relative to the ground in a direction opposite to the first train and receding from it?

Which stable element is used to determine the age of volcanic rock? a- argon b- carbon-14 c- potassium d- carbon-12