Select the only true statement: A beam in bending experiences tensile stresses on one side and compressive stresses on the other side.

A beam in bending experiences tensile stresses along the beam center and compressive stresses along the beam’s edges.

A beam in bending experiences only compressive stresses.

A beam in bending experiences only tensile stresses.

Air initially at 0.75 bar, 1000 k, and occupying a volume of 0.12 m^3 undergoes two processes. process 1-2: the air is compressed isothermally until the volume is halved. process 2-3: the air undergoes a constant pressure process until the volume is halved again. assume ideal gas behavior. a) determine the mass of the air, in kg. b) the work and the heat transfer for each of the two processes, in kj. (100 kj = 1 bar . m^3)

Lacie kicks a football from ground level at a velocity of 13.9 m/s and at an angle of 25.0° to the ground. how long will the ball be in the air before it lands? how far will the football travel before it lands?

For waves in the ocean, the medium of the waves is a. air b. water c. energy d. a passing boat