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Suppose that a heat engine is connected to two energy reservoirs, one a pool of molten aluminum (660degrees Celsius) avid the other a block of solid Mercury (-38.9 degrees cel just). The engine runs by freezing 1g of aluminum And melting 15 g of mercury during each cycle. The heat of fusion of aluminum is 3.97*10^5J/kg. The heat of fusion of mercury is 1.18 *10^4J/kg.
What is the efficiency of this engine?
What is the maximum possible efficiency of this engine?
A sound wave in our classroom has speed of 380 m/s. There is a speaker at each end of the table that has 4.0 m length. What is the phase minimum phase difference between the waves arriving to you from the two speakers
An airplane in a wide sweeping "outside" loop can create zeto gees inside the aircraft cabin. What must be the radius of the curvature of the flight path
An argon-ion laser produces a cylindrical beam of light whose average power is 0.790 W. How much energy is contained in a 2.70 m length of the beam
q1. a 0.50-kg object is attached to an ideal massless spring of spring constant 20 nm along a horizontal frictionless
What is the electric potential energy of the system. A man strikes a long aluminum rod at one end. Another man, at the other end with his ear close to the rod, hears the sound of blow twice (once through the air and once through the rod), with a 26..
A Gas of diatomic molecules is in equilibrium at a temperature of 340 K. Assuming that the rotational inertia of the molecule is 2.5 x 10-40 kg•m2, Determine the mean angular momentum of the molecules
Gasoline flows through a horizontal pipeline with a flow rate of 25 ft 3 / min. calculate the pressure in this pipe
for a sample with a quench rate of 5.5 degrees csec what kind of steel gives a rockwell hardness of c25 at this cooling
In addition, snow exerts a retarding force on the sled that points opposite to the direction of motion, and has a magnitude of 57 N. Find out the acceleration of the sled and child.
Carbon disulfide (n= 1.63) is poured into a container made of fused quartz (n= 1.46). What is the critical angle for internal reflection of a ray in the liquid
An object with a mass of m = 5.3 kg is attached to the free end of a light string wrapped around a reel of radius R = 0.255 m and mass of M = 3.00 kg, Determine the speed with which the object hits the floor
A person stands on a scale in an elevator. As the elevator starts, the scale has a constant reading of 600 N. Determine the weight of the person
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