At the end of a very long taut string, of mass 0.008 kg, and linear density 0.021 kg / m, a MAS is produced, perpendicular to the direction of the string, of amplitude 0.322 cm and frequency 16 Hz. If this disturbance propagates along the rope with velocity 43m / s, determine: a. the wavelength of the generated waves.

B. The energy that these waves transmit.

C. The power that transmits the waves produced along the string.

During a medieval siege of a castle, the attacking army uses a trebuchet to hurl heavy stones at the castle walls. if the trebuchet launches the stones with a velocity of at an angle of 50.0°, (a) how long does it take the stone to hit the ground? (b) what is the maximum distance that the trebuchet can be from the castle wall to be in range? (c) how high will the stones go? show all your work.

Air enters a gas turbine with two stages of compression and two stages of expansion at 100 kpa and 17°c. this system uses a regenerator as well as reheating and intercooling – the intercooler returns the air to the inlet temperature. the pressure ratio across each compressor is 4 ; 300 kj/kg of heat are added to the air in each combustion chamber; and the regenerator operates perfectly while increasing the temperature of the cold air by 20°c. determine the system’s thermal efficiency. assume isentropic operations for all compressor and the turbine stages and use constant specific heats at room temperature. (0.378)

The three classes of rocks are sedimentary, metamorphic, and igneous. how are rocks classified into one of these three groups?