An industrial process requires a 10.0 Kg Iron bar to be at heated to a temperature of T_F = 1100.0 C before a forging process can proceed. The induction heater that is used during the process produces a power output of P = 50,000 watts or (j/s) to heat the bar.

a) If the bar starts at a temperature of T_i = 20.0 C how much energy is required to raise the temperature of the bar to the working temperature of T_F = 1100 C? The specific heat of Iron is C_I = 450.0 (j/Kg C).

b) How long will it take the induction heater at a power output of P = 50,000 watts or (j/s) to heat the bar?

c) If the bar has an initial length of L_o=1.0 m at 20 C what will the length of the bar be after a heating process that increases its temperature from 20.0 C to 1100 C? The linear expansion coefficient of Iron is α_I = 12.0 x 10^-6 (1/C).

Single Plantwide Factory Overhead Rate

Mozart Music Inc. makes three musical instruments: trumpets, tubas, and trombones. The budgeted factory overhead cost is $122,920. Factory overhead is allocated to the three products on the basis of direct labor hours. The products have the following budgeted production volume and direct labor hours per unit:

If required, round all per unit answers to the nearest cent.

a. Determine the single plantwide factory overhead rate.
$ per direct labor hour

b. Use the factory overhead rate in (a) to determine the amount of total and per-unit factory overhead allocated to each of the three products.

For each system listed in the first column of the table below, decide whether the change described in the second column will increase the entropy S of the system, decrease, or leave S unchanged. If you don’t have enough information to deiced, check the “not enough information” button in the last column

A double pipe heat exchanger is to be designed to cool 5 gal/min of hot oil from 250°F to 120°F using 10 gal/min of cooling water available at 70°F. The heat exchanger is to consist of sections of 0.75 inch 16 BWG copper tubing inside 1.5 inch 16 BWG tubing; the water flows in the annular space. The shell-side heat transfer coefficient for this system is known to be 737 Btu/hr×ft²×°F.

a) Estimate the required length of the countercurrent exchanger, neglecting the resistance of the tube wall in your calculations.

b) Estimate the required lengthof the exchanger if operated co-currently

The following data are available:

Wall thickness for 16 BWG = 0.065 in.

Kindly try complete all parts in Significant answers sensitive

(1a) n part B of the experiment, you increase the density of a saltwater solution by adding more and more salt (NaCl). Initially, 100.0 mL of water equals 100.0 g of water, as water has a density of approx. 1.0 g/mL.
Calculate the percent composition in % by mass [enter the unit as % (m/m)] as mass of NaCl per 100 g of solution after adding 23.51 g of NaCl to 100.0 g of water

(1b) An irregular shaped solid object consisting of an unknown material has a mass of 340.44 g. The object is placed into a graduated cylinder filled with 151 mL of water. The water level rises to 213 mL. Determine the density of the material in g/mL.

(1c)A cube consisting of an unknown material has a mass of 24.447 g and each side has a length of 1.48 cm.
Determine the density of the material in g/mL.

.

11. Given that the ages (in years) of the reside

nts in a city are normally

distributed with a population mean of 37 and a population standard deviation of 13. The probability that the age of a randomly selected person

from this city is between 30 and 44 is closest to

(a) 0.21

(b) 0.54

(c) 0.41

(d) 1.0

(e)None of these.

12. Weights of newborn babies in a certain state have normal distribution with

mean 5.33 lb and standard deviation 0.65 lb. A newborn weighing less than

4.85 lb is considered to be

at risk, that is, has a higher mortality rate.

(a) A baby just born in this state is picked at random. The probability that

the baby is at risk is about

(a) 0.43

(b) 0.33

(c) 0.23

d) 0.13

(e) 0.53

(b) The hospital wants to take pictures of the heaviest 10% of the newborn

babies. The minimum weight (in lbs) required for a picture to be taken is

about

(a) 5.89

(c) 6.16

(c) 9.12

(d) 8.12

(e) 7.27

A buffer solution that is 0.403 M in HF and 0.403 M in NaF has a pH of 3.14.

(1) The addition of 0.01 mol of H₃O⁺ to 1.0 L of this buffer would cause the pH to _________increase slightly increase by 2 units decrease slightly decrease by 2 units not change.

(2) The capacity of this buffer for added H₃O⁺could be increased by the addition of 0.148 mol_________of the weak acid of the salt.

Consider these compounds:

Complete the following statements by entering the letter corresponding to the correct compound.

Without doing any calculations it is possible to determine that zinc phosphate is more soluble than , and zinc phosphate is less soluble than .

It is not possible to determine whether zinc phosphate is more or less soluble than by simply comparing K_sp values.

Please show your work and be specific, I have asked these questions already and got the wrong answers because they weren't answered fully!

L ANALYTICAL QUESTION Suppose you have only 20 hours per week to study or leisure. The following table indicates the
the tradeoff between leisure time (not studying) and the grade point achieved as a result of studying.

A. From the table above, draw the PPC that shows the possible combinations and label

I. attainable,
II. unattainable,
III. attainable but not efficient combinations

B. Using the information above, what is the opportunity cost of raising your grade-point
average from 2.0 to 3.0?

C. What is the opportunity cost of raising your grade-point average from 3.0 to 4.0?
D. Why does the opportunity cost of improving your grade-point average increase?

An FMS consists of three stations plus a load/unload station. Station 1 loads and unloads parts using two servers (material handling workers). Station 2 performs horizontal milling operations with two servers (identical CNC horizontal milling machines). Station 3 performs vertical milling operations with three servers (identical CNC vertical milling machines). Station 4 performs drilling operations with two servers (identical drill presses). The machines are connected by a part handling system that has two work carriers and a mean transport time = 3.5 min. The FMS produces four parts, A, B, C, and D, whose part mix fractions and process routings are presented in the table below. The operation frequency is fijk = 1.0 for all operations. Determine (a) maximum production rate of the FMS, (b) utilization of each machine in this system, and (c) average utilisation of the system U s .