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Give a representation of A [ B, A B and A B as intervals.
A ball falls to the ground from an initial height h1 = 1m and then bounces back to a height h2 = 3 4h1, falls back down and then bounces to a height h3 = 3 4h2. What is the total distance the ball will travel until the 10th time it hits the ground?
Problem: Child psychology-language acquisition and theory of the mind
determine the force in each of the members connecting joint a through f of the vaulted roof truss shown. state whether
A water jet that leaves a nozzle at 60 m/s at a flow rate of 120 kg/s is to be used to generate power by striking the buckets located on the perimeter of a wheel. Determine the power generation potential of this water jet.
how would you use a pulley system with one rope to pull at a single item at two points simultaneously?the free ropes of
A 1.9-kg mass of helium is maintained at 250kPa and 26 degrees Celsius in a rigid container. How large is the container in m^3?
A heat pump with a coefficient of performance of 3.5 provides energy at an average rate of 70,000 kJ/h to maintain a building at 20C on a day when the outside temperature is -5C. If electricity costs 8.5 cents per kW*h
air enters a 0.6-m-diameter fan at 16c105kpa with a volumetric flow rate of 0.35m3s. assuming ideal gas behavior
steam at 10 mpa and 450 degrees c enters an adiabatic turbine at 80 ms and exits at 10 kpa 92 quality and 50 ms. the
the elastic modulus of diamond is measured by applying a force parallel to the body diagonal of the unit cell and
two plates of 1040 steel are joined together by an aluminum rivet. discuss at least three forms of corrosion that could
liquid water at 180oc and 1002.7 kpa has an internal energy on an arbitrary scale of 762.0 kj kg-1 and a specific
Consider a rocket engine with an exit area of 8.5 m2. The flow rate of fuel and oxidizer are 75 kg/sec and 8 kg/sec respectively. Determine the thrust of the rocket if it is operating at an altitude of 200 km above sea level. The exhaust velocity and..
2. What is the design objective? -to minimize the required power input to the compressors 3. What parameters does the design engineer control?
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