In a particular avionics system a radar altimeter is used to determine the height above the ground level (or agl for short). one of the software components uses the radar altimeter height measurement (radar height) to determine if we are within 50', between 50' and 200', between 200' and 500', or above 500' using the following low-level requirement: if (radar height< 50.0) then below50functiono else if (radar height< 200.0) then between50and200functiono else if (radar height< 500.0) then between200and500functiono else above500functiono endif design the test cases necessary to verify this requirement! what is the problem when you base the choice of test cases on the c-code rather than the requirements?

Apiston-cylinder with a volume of 0.25 m3 holds 1 kg of air (r 0.287 k/kgk) at a temperature of 100 c. heat transfer to the cylinder causes an isothermal expansion of the piston until the volume triples. how much heat is added to the piston-cylinder?

The higher the astm grain size number, the finer the gran is. a)-true b)-false

Tom is having a problem with his washing machine. he notices that the machine vibrates violently at a frequency of 1500 rpm due to an unknown rotating unbalance. the machine is mounted on 4 springs each having a stiffness of 10 kn/m. tom wishes to add an undamped vibration absorber attached by a spring under the machine the machine working frequency ranges between 800 rpm to 2000 rpm and its total mass while loaded is assumed to be 80 kg a) what should be the mass of the absorber added to the machine so that the natural frequency falls outside the working range? b) after a first trial of an absorber using a mass of 35 kg, the amplitude of the oscillation was found to be 10 cm. what is the value of the rotating unbalance? c) using me-3.5 kg.m, find the optimal absorber (by minimizing its mass). what would be the amplitude of the oscillation of the absorber?