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A carnot engine utilizes a heat source at 580 °c and has an efficiency of 32%. To increase the efficiency to 38%, what must be the temperature of the heat source?
A step-up transformer is designed to have an output voltage of 2200V (rms) when the primary is connected across a 208 V (rms) source. If there are 76 turns on the primary winding, how many turns are necessary on the secondary?
The pulley of an Atwood Machine has a radius of 0.150 m and a moment of inertia of 0.687 kg m^2. Mass 1 is equal to 19.9 kg and Mass 2 is equal to 15.0 kg. What is the acceleration of Mass 2 and what is the angular acceleration of the pully?
Suppose a meteor of mass 3.40 1013 kg is moving at 31.0 km/s relative to the center of the Earth and strikes the Earth. What is the change in the angular speed of the Earth due to this collision
Two identical piano wires have a fundamental frequency of 640 Hz when kept under the same tension. What fractional increase in the tension of one wire would lead to the occurrence of 10 beats/s when both wires oscillate simultaneously.
You are working for a shipping company. Your job is to stand at the bottom of a 5.9 -long ramp that is inclined at 45 above the horizontal. You grab packages off a conveyor belt and propel them up the ramp.
The magnetic field perpendicular to a circular coil of 5 turnsand diameter 20 cm changes from +1.85 T to -0.25 T in 30 ms. Find the change in magnetic flux and induced emf
Young's experiment is performed with light of wavelength 502 nanometer from excited helium atoms. Compute what the separation of the two slits
You are to program a robotic arm on the assembly line to move in a xy-plane. Its first displacement is; its second displacement is, of magnitude 6.51 and direction 62.7 measured in the sense from +x-axis toward -y-axis. The resultant of the two displ..
At what height above the surface of the earth does the balloon have a speed of 7-m/s.
question you need a capacitance of 55 mu f but you dont happen to have a 55 mu f capacitor. you do have a 65 mu f
A uniform 1.4 kilogram rod that is 0.75 meter long is suspended at rest from the ceiling by two springs, one at each end of the rod. Compute the angle that the rod creates with the horizontal
The concept of coalescence has many applications. Some surnames are more frequent than others, and some die out altogether.
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