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The need arises in a laboratory for 2000cm3 of an antifreeze consisting of a 30 mole-percent solution methanol in water. what volumes of pure methanol and of pure water at 25 degrees Celsius must b
A sky diver jumps from a helicopter and is falling straight down at 30 m/s when his parachute opens. From then on, his downward acceleration is approximately
The refrigerant leaves the tube at 100 kPa and 20 degree C with a velocity of 1 m/s. Calculate: mass flow rate volume flow rate at inlet average velocity at inlet.
The system is then heated while the pressure is held constant until the volume doubles. Determine how much heat was added to the system.
Confirm that the pressure vessel will leak before burst when the surface length of the crack is smaller than this size by calculating the maximum size of the surface crack that can develop and still
A 12-mm-diameter specimen is subjected to tensile loading. The increase in length resulting from a load of 9 kN is 0.025 mm for an original length Lo of 75 mm. What are the true and conventional st
How thick (i.e. altitude-wise) would the atmosphere have to be in order to have a temperature rise of no more than 0.5 C?
Determine the torque T and power P that can also act simultaneously on the shaft without exceeding a resultant shearing stress of 56 MPa and a resultant normal stress of 98 MPa. (With f expressed in
Bullet B weighs 0.5 oz and blocks A and C both weigh 3 lb. The coefficient of friction between the blocks and the plane is mk 5 0.25. Initially the bullet is moving at v0 and blocks A and C are at r
Saturated water vapor has a specific volume of 0.77012 m3/kg. What is its temperature? What is the internal energy in kJ/kg of water at 4.0 MPa and 620 oC?
A rigid, insulated vessel is divided into two compartments connected by a valve. Initially, one compartment, occupying one-third of the total volume, contains air at 500 degree Rankine, and the othe
The roller-coaster track shown is contained in a vertical plane. The portion of track between A and B is straight and horizontal, while the portions to the left of A and to the right of B have radii
A 380-liter tank contains steam, initially at 300 kPa and 400°C. Determine time (seconds) at which 75% of the initial mass of steam remains in the tank.
The acceleration of a particle is defined by the following relation where A is a constant. At t=0 the position of the particle is 8 meters measured from the origin and is at rest.
A rocket has an empty weight of 500lb and carries 330lb of fuel. If the fuel is burned at the rate of 1.3 lb/s and ejected with a velocity of 4550 ft/s relative to the rocket, determine the maximum
Steam enters a turbine at 40 bars, 440C, and 100 m/s through an pipe with a cross-sectional area of 0.050 m2. Determine the mass flow rate.
The water is heated to to boiling point of water (saturated liquid.) Neglect any air being heated. Change in volume for water is minimal, neglect work transfer. Find the amount of energy needed in t
On May 23, 1998, a tanker truck loaded with gasoline (p=719.7 kg/m^3) jumped a jersey barrier and collided with an oncoming pickup truck. The resulting fireball and blaze melted structural supports
Calculate the total vertical component of the hydrostatics force on the hull due to the water (this is equivalent to the displacement of the barge).
What constant speed increase is needed for the total acceleration magnitude to be 8 m/s^2 when the car reaches point b? The radius of the track is 150 m.
Ten (10) kg of water at 100 degrees C expands in a piston and cylinder arrangement from a volume. Describe whether the work is done by system (water) or on the system.
The rotor has a weight of 100 lb with its center of mass located at a distance of 0.01 in. from the axis of rotation. Find the amplitude of vibration of the motor and the force transmitted through
Water starts at a temperature of 19 degrees celcius and is then boiled until it is a superheated steam at temperature 350 degrees celcius. How much heat is added to each kilogram (kg) of water?
Show the expansion process for R-134a on a P-v diagram. Label states, show property values, and indicate appropriate lines of constant temperature.