The elevation of the end of the steel beam supported by a concrete floor is adjusted by meansof the steel wedgesEandF. The base plateCDhas been welded to the lower flange of the beam, and the end reaction of the beam is known to be 18 kips. The coefficient of static friction is 0.30between two steel surfaces and 0.60 between steel and concrete. If the horizontal motion of thebeam is prevented by the forceQ, determine (a) the forcePrequired to raise the beam, (b) thecorresponding forceQ

Air enters a compressor operating at steady state at 1.05 bar, 300 k, with a volumetric flow rate of 93 m3/min and exits at 12 bar, 400 k. heat transfer occurs at a rate of 15.5 kw from the compressor to its surroundings. assuming the ideal gas model for air neglecting kinetic potential energy effects, determine the power in put in kw.

When a 5.0kg cart undergoes a 2.2m/s increase in speed, what is the impulse of the cart

Scout feels ill one day before school. her mother puts a thermometer in her mouth and the temperature begins to climb to 100°f. what is happening between the cooler thermometer and scout's body? a) scout's body is applying a force to the particles in the thermometer. b) kinetic energy is being transferred from her mouth to the thermometer. c) potential energy is being lost by the thermometer and gained by scout's body. d) the potential energy stored in foods is converted to mechanical energy to raise the mercury in the thermometer.