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Find the pressure variation in the directions tangent and normal to the strealimes. Does the pressure variarion depen on the flow speed?
What will be the dc supply voltage required? What will be the counter EMF developed by the coil under steady operating condition if the coil resistance is 0.01 Ohm?
The endurance limit of a steel component is 112 MPa and the ultimate tensile strength is 385Mpa. What is the fatigue strength corresponding to a life of 70 x 10 power of 3 cycles?
The local atmospheric pressure and acceleration due to gravity are 100 kpa and 9.81m/s^2 respectivly. For the water, determine the pressure,in kpa, and volume in cm^3.
Consider the 0.3 kg of N2 in a rigid container at 400 K and 5 atm. The N2 is cooled to 300 K. Determine the specific entropy change of the N2 associated with this cooling process.
If the temperature of the sample changes from 60 °C to 50 °C, what is the expected change in resistance? What if the temperature changes from 60 °F to 50 °F.
Is mercury a good choice for using as the liquid in a manometer on this planet? If so, why? If not, what other liquid might you recommend using?
A manometer attached to the cylinder indicates a pressure of 620 mmHg above atmosphere. Determine: (a) The absolute pressure of the gas in the vessel, (b) The specific volume of the gas.
A 10.00-meter-long pipe, closed at one end, was inverted and submerged vertically in a Minnesota lake until the closed end was even with the lake surface. How high (in meters) does the water rise in
It is observed that the wire stretches 45 mm when a tensile force P is applied. Knowing that E= 200 GPa, determine (a) the magnitude of the force P, (b) the corresponding normal stress in the wire.
The specific heats above and below the freezing point are 3.2 and 1.7 kJ/kg·K, respectively. The heat of fusion ( the amount of hear needed to freeze 1 kg of fish ). Find the heat transfered.
How high was the elevator when the stone was released? With what speed does the stone strike the bottom of the shaft?
Knowing that E=0.45x10^6 psi, determine (a) the reactions at A and C, (b) the normal stress in each portion of the rod.
Shearing stresses on the directions normal and tangential to the weld are σ=12ksi and τ= 7.2. Determine the magnitude p of the largest axial force that can be applied to the pipe.
Then it is isothermally compressed to state 3. Draw the diagram of the process on a PV chart and find the equation for total work.
If the specific internal energy of the gas decreases by 29.8kJ/kg during the process, determine the heat transfer, in kJ. Assume kinetic and potential energy effects are negligible.
A 100 lbm liquid-vapor mixture of water in a rigid container with a volume of 3 ft3 at a temperature of 100oF is heated until the system becomes a single phase. What is the heat transfer of the proces
Evaluate the thermal conductivity of the soda lime glass at 300 K. If the aircraft has 130 windows and it costs $1/kWh to heat the cabin.
When being chargerd by a 40 volt DC supply, find the time, t for vc to reach 20 volts after the charging process has started if C=200μF and R=10kΩ.
Calculate the number of years it takes to pay off loan in one equation, if yearly income is $120,000 and suppose yearly payment is $10,000 and the total debt is $45,000?
The R-134a undergoes a process that increases its volume by 40 percent. Calculate the final temperature and enthalpy of the R-134a.
A particle travels along the circular path x²+y²=r². If the y component of the particle's velocity is Vy=2rcos2t, determine the x and y components of its acceleration at any instant.
The motion of the partice is defined by the realtions r=b(2+cospit) and theta=(pi)t. Where t and theta are expressed in m and radiains. Determine (a) the accleration and velocity of the partice when
What change in the given data would have to be allowed if each set were to be used? Calculate results for at least four different sets and state reasons for your final choice.
If the scrap metal density, in kg/m^3, varies with position z, in m, according to density=7800-360(z/L)^2, determine the reading in the scale, in N.