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Question: Power plant that uses the temperature gradient of the ocean has been proposed. The system is to operate between 21°C (surface temperature) and 6°C (water temperature at a depth of about 1 km). (a) What is the maximum efficiency of such a system? % (b) If the power output of the plant is 85 MW, what is the minimum thermal energy absorbed per hour? J/h (c) In view of your answer to part (a), do you think such a system is worthwhile?
Big yellow fish swimming at 2.0m/s swallows little green fish at rest. Big yellow fish is 3 times as massive as little green fish. What fraction of big yellow fish's initial kinetic energy was lost in this collision
One of two identical 500-Hz tuning forks is at rest and other is moving. These produce a beat frequency of 5 Hz. What are the possible velcities of the moving fork
A rifle is test fired into a ballistic pendulum. The bullet embeds itself in the block of mass 0.55kg that makes up the bob of the pendulum. What is the muzzle velocity of the rifle
A rocket traveling at 0.540c sets out for the star, which is 5.45ly away from earth. It will return to earth immediately after reaching the star. According to the rocket crew how far will the rocket travel
A 16.8-kg sled is being pulled across a horizontal surface at a constant velocity. The pulling force has a magnitude of 73.0 N and is directed at an angle of 22 ° above the horizontal. Determine the coefficient of kinetic friction.
A solid, uniform disk of radius 0.250 m and mass 61.6 kg rolls down a ramp of length 4.60 m that makes an angle of 16° with the horizontal. Find the angular speed of the disk at the bottom of the ramp
Estimate the spacing between the two irrandiance maxima closest to the geometric of a plain wave illuminated straightedge if the source distance is 10.0 cm and the observation distance is 20.0 cm. Assume wavelength=632.8 nm.
Multiple-Concept Example 11 deals with a situation that is similar, but not identical, to that here. What is the mass of the bar
question an electron and a 0.0500-kg bullet each have a velocity of magnitude 450ms accurate to within 0.0100. within
Three 0.50 kg particles form an equilateral triangle with 0.60 msides. The particles are connected by rods of negligible mass. What is the rotational inertia of this rigid body about (a) an axis thatpasses through one of the particles and is paral..
A light bulb is wired in series with a 124 resistor, and they are connected across a 120.0-V source. What is the resistance of the light bulb
Solar energy originates in nuclear reaction, where mass energy changes the most in kinetic energy of photon. calculate how much mass, the Sun loses in second
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