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Steam enters a turbine at 1240 ?C and is exhausted at 82 ?C. What is the maximum eficiency of this turbine?
A block with mass m = 18.7 kg slides down an inclined plane of slope angle 18.4o with a constant velocity. How far up the incline will the block move before coming to rest
A 1400 kg block is lifted at a constant speed of 4 cm/s by a steel cable that passes over a massless pulley to a motor-driven winch. What force must be exerted by the cable
q1. an aluminium block of mass m1 3 kg and a copper block of mass m2 8 kg are connected by a light string over a
A 7650kg iceberg with density 931 kg/m3 is afloat in seawater with density 1030 kg/m3. find the buoyant force on the iceberg
Electrons in a photoelectric-effect experiment emerge from a copper surface with a maximum kinetic energy of 1.10 eV
Find the de Broglie wavelength of an oxygen molecule of average kinetic energy in air at a temperature of 226.0 K
The difference in potential between the accelerating plates of a TV set is about 26000 V. If the distance between these plates is 1.5 cm, find out the magnitude of the uniform electric field in this region.
A tennis ball is struck at the base line of the court, 12.5 m from the net. How far beyond the net will the ball hit the ground
two polarizers are oriented at 72 degress to one another. Unpolarized light falls on them. What fraction of the light intensity is transmitted
Three horizontal forces (the only horizontal ones) act on a box sitting on a floor. One (call it F1) acts due east and has a magnitude of 150lb, Find the magnitude of the third force
An astronaut is traveling in a space vehicle that has a speed of 0.510c relative to Earth. The astronaut measures his pulse rate at 73.0 per minute. Signals generated by the astronaut's pulse are radioed to Earth when the vehicle is moving perpend..
A series circuit consists of an AC source of variable frequency, a 150 ohm resistor, a 1.55 uF capacitor and a 4.56 mH inductor. Find the impedance of this circuit when the angular frequency of the AC source is adjusted to (a) the resonance angular f..
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