the whole child approach to childhood development is supported by current brain research

Develop a heat treatment plan for a 0.5 inch diameter part made of H13 tool steel to be heat treated to a RC 50 to 52 and then stress relieved. ( show steps please )

Develop a heat treatment plan foe a 2 inch diameter part made of 4140 to be heat treated to a Rockwell of 48 to 50 Rockwell C on the surface. ( show steps please)

Water flows at a rate of 30 ft3/s from a reservoir with elevation 45 ft to a lower one with elevation 0
ft through a pipe Of length 1800 ft with bends, elbows, entrances and exits contributing a total of
minor losses Of ?K = 2.5. The pipe has a roughness e = 0.0005ft.
-Determine the pipe diameter needed.
-How important are minor losses? 
-Plot the EGL. 

AT mechanics of material,
Can you explain why the contact point between chip( or work) and cutting tool is larger when the cutting speed is slow? I'm very pleased if you explain this to me by using picture or drawing.

You are heating airflow in a long, round tube. The tube is irradiated uniformly, on all sides, with a constant thermal heat flux q". Inside the tube, the air flows with a known heat flux mdot and constant, known properties. The tube has a length L and a diameter D. This is your baseline case. You then add a helical coil inside the tube that stirs up the airflow and doubles the value of h over the baseline case. a) How does the design change impact the temperature of the airflow? b) How does the design change impact the temperature of the tube wall

Explain the significance of the following in a TCP segment:

1) sequence number

2)Acknowledgement number

3) Window

4) SYN Flag

5) FIN Flag

A volume of 8.62 m3 of air in a rigid, insulated container fitted with a paddle wheel is initially at 322 K, 0.4 bar. The air receives 481 kJ by work from the paddle wheel. Assuming the ideal gas model with cv = 0.71 kJ/kg • K, determine for the air the amount of entropy produced, in kJ/K.

A steam thermoelectric plant operates a Rankine cycle with overheating. Water enters the pump as saturated liquid , 7.7 kg/s. The efficiency of the pump is 0.9 The water enters the high pression turbine at 12 500 kPa and 550°C, after that steam overheats at a constant pressure of 2000 kPa until 450°C before it expands on the low pressure turbine. The efficiency of both turbines is 0.85. The vapor quality when it enters to the condenser is 0.95 Determine the thermal efficiency of the cycle.

Is the thrust generated typical of a small jet aircraft engine?

I got -99 N

explain and give me a source

Using Ees Program (With the Code and Output)

Saturated liquid Propane flows in to a valve. It enters at 375 psia, and leaves at 15 psia. Mass flow through the valve is 1.25 lbm/hr. Use EES and ‘Propane’ as your fluid to calculate the following:

The quality of the Propane exiting the valve

Temperature of the Propane exiting the valve (in °F)

The change in entropy of the Propane (in Btu/lbm-R)

a.__________________ b.____________________ c.____________________

1.Humid air at 50 ºC and 1.0 atm with 2 ºC of superheat is fed to the condenser. Gas and liquid streams leave the condenser in equilibrium at 20 ºC and 1 atm.

(a)Assume a basis of calculation of 100 mol inlet air, draw and label a flow chart for the process.

(b)Calculate the mass of water condensed per m3 of air fed and kJ transferred per m3 air fed.

(c)What cooling rate (kW) would be required to process 250 m³ air fed/h?

A vapor-compression heat pump with a heating capacity of 500 kJ/min is driven by a power cycle with a thermal efficiency of 20%. For the heat pump, Refrigerant 134a is compressed from saturated vapor at -10°C to the condenser pressure of 10 bar. The isentropic compressor efficiency is 80%. Liquid enters the expansion valve at 9.6 bar, 34°C. For the power cycle, 80% of the heat rejected is transferred to the heated space.

Introduction to engineering experimentation

A strain sensor manufacturing company tested the average lifetime of their sensor and found the following results in days

1820, 1960, 2050, 1800, 1500, 1750, 1700, 1775, 2000, 1905

a) Find the mean, median, and standard deviation of the lifetime of the sensor

mean= 1826

median=1810

standard deviation=153.6

b) State the type of distribution you would use to estimate the 95% confidence interval on the mean and then calculate the value?

c) Determine if you can reject any of the samples