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August 21, 2014

Homework Help: Computers: Operating Systems

Recent Homework Questions About Operating Systems

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Direct way to improve yield of ball mill
The Ball Mill as a general grinding equipment, is widely used in dressing, building materials and chemical industry, ball mill can be divided into dry and wet type two kinds of grinding way. According to the row of ore in different ways, and can be divided Grate Ball Mill and ...
Thursday, June 13, 2013 at 4:55am

The defects of ball mill
The Ball Mill faults: (1) work efficiency is low, the power consumption unit. (2) the ball mill barrel rotational speed is low (about 15 ~ 27 r/min), if you use ordinary motor that. The average all need equipped with expensive reducer. (3) grinding medium in the impact and ...
Thursday, June 13, 2013 at 4:55am

physics
The most convenient way to express vectors in the two dimensional plane is in the familiar (x,y) Cartesian coordinates. However, one can express vectors in other coordinate systems as well. For example, another useful coordinate system for the plane is polar coordinates (r,&#...
Thursday, June 13, 2013 at 3:52am

physics
The most convenient way to express vectors in the two dimensional plane is in the familiar (x,y) Cartesian coordinates. However, one can express vectors in other coordinate systems as well. For example, another useful coordinate system for the plane is polar coordinates (r,&#...
Thursday, June 13, 2013 at 1:53am

Math 8th Grade
I have a bunch of nickels and quarters worth $7.85 in my [pocket. How do I write a system of equation to solve and determine how many of each coin I have!!
Wednesday, June 12, 2013 at 8:27pm

Boolean Algebra
In the country of Genovia, the president wants to ensure that the Monetary Committee can activate a device that opens the country’s safe. The safe system is to be activated by a device that obeys the following rules: Each member of the Monetary Committee has a button to ...
Wednesday, June 12, 2013 at 4:49pm

Theather Appreciation
HENRIK IBSEN 1. Which of these eras is Ibsen considered to be the Father of? a. Symbolism Era b. The Poetic Age c. Romanticism d. Modern Drama 2. Where is Henrik Ibsen from? a. Romania b. Finland c. Ireland d. Norway 3. According to his power point, which was the first poetic ...
Wednesday, June 12, 2013 at 3:16pm

tenses
The club's amplification system needed to be adjusted continually a. past perfect in the passive voice b. past continuous in the passive voice c. an infinitive in a passive voice. d. simple past in the passive voice Answer c.
Wednesday, June 12, 2013 at 2:53pm

identify tenses
1. Zach might be getting a good portable system next month. a. past tense with a modal b. present continuous with a modal c. future perfect in the passive voice answer a
Wednesday, June 12, 2013 at 2:41pm

conditional sentence
1. If the sound system hadn't failed, last night's show would have been better. a. this is a correct sentence using the 2nd conditional form b. this is a sentence using the 3rd conditional form Answer a. 3. if the club's manager agrees, they'll play a few more ...
Wednesday, June 12, 2013 at 2:34pm

conditional sentence
1. If the sound system hadn't failed,last night's show would have been better a. this is a correct sentence using the 1st conditional form b. this is correct sentence using the 2nd conditional form C. this is a correct sentence using the 3rd conditional form answer A 2...
Wednesday, June 12, 2013 at 6:04am

identify tenses
1. The dou had been given the second best time slot. a. past perfect in the passive voice b. past continuous in the passive voice c. an infinitive in the passive voice Answer a 2. The promotional poster was designed by Zach a. past continuous in the passive voice b. an ...
Wednesday, June 12, 2013 at 5:31am

physics
The most convenient way to express vectors in the two dimensional plane is in the familiar (x,y) Cartesian coordinates. However, one can express vectors in other coordinate systems as well. For example, another useful coordinate system for the plane is polar coordinates (r,&#...
Wednesday, June 12, 2013 at 1:55am

math
use substitution to solve this linear system: 8x + y = -458 -5x + 3y = 221
Tuesday, June 11, 2013 at 10:02pm

math
Use an elimination strategy to solve this linear system: 10x + 10y = 1030 5x + 5y = 135
Tuesday, June 11, 2013 at 8:49pm

math
Model this situation w/ a linear system: Melissa borrowed $10, 000 for her university tuition. She borrowed part of the money at an annual interest rate of 2.4 % and the rest of the money at an annual rate of 4.5 %. Her total annual interest payment is $ 250.50 a.) a + b = 10 ...
Tuesday, June 11, 2013 at 8:45pm

Boolean Algebra
In the country of Genovia, the president wants to ensure that the Monetary Committee can activate a device that opens the country’s safe. The safe system is to be activated by a device that obeys the following rules: Each member of the Monetary Committee has a button to ...
Tuesday, June 11, 2013 at 8:04pm

math
Sales clerk at an appliance store have a chance of 2 payment: Plan A: $580 every 2 weeks plus 4.2 % commission on all sales Plan B: $880 every 2 weeks plus 1.2 % commission on all sales a) Write a linear system to model this situation b) Graph the linear system in part a c) ...
Tuesday, June 11, 2013 at 7:31pm

math
Model this situation w/ a linear system: Melissa borrowed $10, 000 for her university tuition. She borrowed part of the money at an annual interest rate of 2.4 % and the rest of the money at an annual rate of 4.5 %. Her total annual interest payment is $ 250.50
Tuesday, June 11, 2013 at 5:37pm

math
Create a linear system to model this situation. Then use substitution to solve the linear system to solve the problem. - Bobbie has been saving dimes & quarters to buy a new toy. She has a total of 28 dimes and quarters, with a value of $4.30. How many of each type of coin ...
Tuesday, June 11, 2013 at 5:32pm

tenses
1. The duo had been given the second best time slot. a. past perfect in the passive voice b. past continuous in the passive voice c. An infinitive in passive voice d. simple past in the passive Answer d 2. The promotional poster was designed by Jack. a. past perfect in the ...
Tuesday, June 11, 2013 at 3:06am

physics
The most convenient way to express vectors in the two dimensional plane is in the familiar (x,y) Cartesian coordinates. However, one can express vectors in other coordinate systems as well. For example, another useful coordinate system for the plane is polar coordinates (r,&#...
Tuesday, June 11, 2013 at 3:00am

physics
The most convenient way to express vectors in the two dimensional plane is in the familiar (x,y) Cartesian coordinates. However, one can express vectors in other coordinate systems as well. For example, another useful coordinate system for the plane is polar coordinates (r,&#...
Monday, June 10, 2013 at 11:17pm

precalculus
Berry is standing at the edge of a hill that slopes downward and to the right. He notices that for every 5 feet you go in a horizontal direction, the hill drops by 2 feet. Berry places a ball at the edge of the hill (the origin of the coordinate system), and kicks the ball at ...
Monday, June 10, 2013 at 5:32pm

precalculus
Berry is standing at the edge of a hill that slopes downward and to the right. He notices that for every 5 feet you go in a horizontal direction, the hill drops by 2 feet. Berry places a ball at the edge of the hill (the origin of the coordinate system), and kicks the ball at ...
Monday, June 10, 2013 at 5:31pm

Algebra
An Algebra I test contains 30 questions. Some of the questions are worth 4 points each, and some are worth 2 points each. The total test is worth 100 points. Let f represent the number of questions worth 4 points and t, the number of questions worth 2 points. Solve the system ...
Monday, June 10, 2013 at 9:42am

Business
Would someone PLEASE HELP? A feature that most identified the Production Era was (A) A.the shift from production for use to production for exchange. B. the shift from proliferation of goods for agricultural use to industrial use. C. the emergence of the advertising discipline...
Sunday, June 9, 2013 at 4:37pm

Algebra
Identify the solution of the system of equations 3x-2y=6 5x=5-25y
Thursday, June 6, 2013 at 2:59pm

Earth science
In what ways do earths system interact with each other
Thursday, June 6, 2013 at 1:27pm

engineering
Let’s suppose the message x(t) is an analog signal shown in the figure below. a) Draw the block diagrams of the system which converts the analog message signal x(t) to a pulse modulated signal. b) Draw the sampled signal with the sampling frequency fs=2khz c) Carry out ...
Thursday, June 6, 2013 at 1:01pm

Social Studies (Ms. Sue)
What did the Federal Reserve Act do? My answer: The Federal Reserve Act improved the nation's monetary and banking systems, creating the modern banking system and a more flexible currency by allowing banks to control money supply.
Tuesday, June 4, 2013 at 4:12pm

Social Studies (Ms. Sue)
What were the major progressive accomplishments of Wilson's presidency? My answer: The major accomplishments of Wilson's presidency were the passing of the Clayton Antitrust Act, which laid down rules forbidding business practices that lessened competition and gave the...
Tuesday, June 4, 2013 at 1:58pm

Algebra
Identify the solution(s) of the system of equations 3x-2y=6 5x=5-25y
Tuesday, June 4, 2013 at 1:34pm

Algebra
Identify the solution(s) of the system of equations 9x + 2y = 6 8x - 2y = 8
Tuesday, June 4, 2013 at 1:33pm

Algebra
Identify the solution(s) of the system of equations 3x+2y=4 5x-4y=3
Tuesday, June 4, 2013 at 1:32pm

physics
The dipole moment for a system of charges is defined as d⃗ =∑kqkr⃗ k. (see here for a more in depth discussion of the dipole moment). Determine the magnitude of the dipole moment in m⋅C for a system of three charges (Q=1 μC, Q=1 μC, and −...
Tuesday, June 4, 2013 at 9:24am

Chem
given the reaction: agcl(s) +2nh3 (aq) <--> ag (nh3)2 +(aq) + cl^- (aq). if more ammonia, nh3 is added to the system at equilibrium the a) amount of agcl increases b) system cannot achieve equilibrium c) rate of the forward reaction decreases d) concentration of cl^- ...
Monday, June 3, 2013 at 5:06pm

Computer
An organization is having its seven department located on 3 floors of a building,3 on groubd, 2 on first & 2 on the second floor each department is having 4 to 5 members & each member has to be provided with a computer system. In order to network these systems which network ...
Monday, June 3, 2013 at 4:16am

Algebra
Identify the solution(s) of the system of equations, if any. -6x - 4y = 24 8y = -12x - 48
Sunday, June 2, 2013 at 10:25pm

Algebra
Identify the solution(s) of the system of equations, if any. x+5y=5 2x-15y=0
Sunday, June 2, 2013 at 10:21pm

algebra 2
the number of milligrams of a drug that remains in a patient's system after t hours is given by the function a(t)=ie^rt. jordan was given 500 milligrams of medicine which leaves his bloodstream at a rate of 25%. how much of the medicine remains in his system after 6 hours?
Sunday, June 2, 2013 at 12:25pm

SAT math
1. x>15-2x / -3 Solve the linear inequality. Write the solution in set builder notation. So, -3x>15-2x, x<-15..? And how do I write it in set builder notation? 2. y+x=9 and 3y=2x + 8. How do I solve this system of equations? 3. Find the maximum y- value of the ...
Saturday, June 1, 2013 at 3:54pm

SAT math
I've really been stuck on these questions: 1. If ( x + 2 y )= -4 and am = 6, then 2amx + 4amy = ____ ? 2. The integers x and y are such that x > y > 0 and x 2 - y 2 = 31. If x – y = 1, what is the value of x + y ? 3. What is the value of a that will make this ...
Friday, May 31, 2013 at 11:13pm

SAT math
1. True or False: The y -intercept of the linear equation x – y = 4 is (0, 4). False?...I think its -4 2. If 10 a > 17, then 30 a + 2 > ____ ? 53? 3. Which of the points below will satisfy the given system of inequalities? 2y>-2 and 15x<0 (-4, -1)
Friday, May 31, 2013 at 3:56pm

SAT math
1. x^2 + 4x + 1 = 0 has how many solutions? 2? 2. What is the greatest common factor of the polynomial 8y + 2x^3 y^2 - 2y^3? 2y? 3. The product of powers rule states that for any number a, and integers q and p, (a^q)(a^p)=a^q+p True 4. True or False: The system of linear ...
Friday, May 31, 2013 at 3:00pm

flordia
XYZ Manufacturing, Inc., located in Centervale, uses the calendar year and the cash method of accounting. On December 31, 2010, XYZ made the following cash payments: •$100,000 for a two-year office lease beginning on February 1, 2011 •$58,000 of inventory items held ...
Thursday, May 30, 2013 at 6:47pm

math
the length of a rectangle is equal to triple the width. which system of equations can be used to find the dimensions of the rectangle if the perimeter is 85 centimeters?
Thursday, May 30, 2013 at 9:51am

Algebra1solutions help
Any help would be appreciated. Thank you. What are the solutions of the system? y = x2 + 3x – 4 y = 2x + 2 Options: (–3, 6) and (2, –4) (–3, –4) and (2, 6) (–3, –4) and (–2, –2) no solution
Wednesday, May 29, 2013 at 12:14am

Business
As a small business owner operating from home, Give major examples to your Board of Revenue to avoid tax payment.
Monday, May 27, 2013 at 2:42pm

information technology
which wireless protocols is limited to operating in the 5GHz range only
Monday, May 27, 2013 at 2:59am

sports
3. The legal status of most athletes in professional team sports in North America was for many years governed by the reserve system. The reserve system was designed to (C) A. give players total control over their own careers. B.increase the salaries of the best athletes on a ...
Sunday, May 26, 2013 at 6:25pm

Wages Quick reply
All but which one of the following assumptions are included within the model of perfect competition? (Points : 1) employers seek to maximize profits workers have perfect information about wages and job opportunities available workers differ with respect...
Sunday, May 26, 2013 at 2:01pm

health care
How does the system of health care provision in the U.S. support goals of public health? Provide an example.
Saturday, May 25, 2013 at 6:05pm

math
It takes a florist 3h 15min to make 3 small centerpieces and 3 large cebterpieces. It takes 6h 20min to make 4 small centerpieces abd 7 large centerpieces. How long does it take to make each small centerpiece and each large centerpiece? Write and solve a system of equations to...
Friday, May 24, 2013 at 3:05pm

chemistry
in fcc crystal system with unit cell of an edge 200pm calculate its density if 200grams of this element contains 24*10E23
Thursday, May 23, 2013 at 1:48pm

science grade 8
Please, explain why do you think that blowout preventer (BOP)was likely a hydraulic system (in the 2010 Deep Water Horizon oil spill accident), and what are the advantages and disadvantages of this hydraulic system in the Deep Water Horizon oil spill. Give an example from this...
Thursday, May 23, 2013 at 12:45pm

english
8. Before writing a recommendation report to the CEO, Dee and Carlos distribute a survey to everyone in their company to determine which new benefits employees are most interested in. What part of the writing process does this activity represent? Writing Planning Revising ...
Wednesday, May 22, 2013 at 11:35pm

Physics
A circuit consists of a resistor of R=7 Ω, a capacitor of C=7 μF, and an ideal self-inductor of L=0.04 H. All three are in series with a power supply that generates an EMF of 5sin(ωt) Volt. The internal resistance of both the power supply and the inductor are ...
Wednesday, May 22, 2013 at 9:19pm

social studies
Payment to workers, his dependents,and/ or survivorsin the event of retirement, disabilityor death are generally covered by the system of insurance known as ?
Wednesday, May 22, 2013 at 9:19pm

Computers
Which of the following operating system types is used in medical equipment or a cash register? A. Multi-user/multi-tasking B. Real-time C. Single-user/multi-tasking D. Single-user/single-tasking
Wednesday, May 22, 2013 at 2:37pm

math
find the solution to the system of equations by using either graphing and substitution y = 6 - x and y = x - 2 (2,4) (-4,2) (4,2) no solutions I think this one is the third answer am I right?
Tuesday, May 21, 2013 at 3:07pm

algebra 1
A local citizen wants to fence a rectangular community garden. The lengthof the garden should be at least 110ft., and the distance around should be no more than 380 ft. Write a system of inequalities that models the possible demensiopns of the garden. Graph the system to show ...
Tuesday, May 21, 2013 at 1:39pm

economics
Unions limit the operation of: A. democracy B. the justice system C. market forces D. the military
Monday, May 20, 2013 at 8:45pm

eonomics
Unions limit the operation of: A. democracy B. the justice system C. market forces D. the military
Monday, May 20, 2013 at 5:09pm

Psychology
Avis put off writing her term paper until three days before it was due. "It's not that big of a deal. I can whip it out in a couple of hours," she thought. As it turned out, this was not the case. She averaged two hours a night sleep as she struggled to write the...
Monday, May 20, 2013 at 4:14pm

social studies
1. Name the five responsibilities of united state citizens? 2.System of sharing power in the government 3.Name the 6 criteria for becoming a naturalized citizen. 4.Purpose of checks and balances? Please help me!! thanks
Monday, May 20, 2013 at 4:05pm

algebra 1
Circle the most appropriate description. 27.A city planning commitee surveys 100 people waiting at a bus stop about the expansion of the public transportation system. Random Sample,systematic sample,self-selected sample, convenience sample, bipartisan sample,stratified random...
Monday, May 20, 2013 at 1:20pm

Physics
A wheel and axle arrangement has an axle with a diameter of 25cm. A rope is wrapped around the axle and is supporting a load of 2 tonnes. 1)If the mechanical advantage of the system is 30, determine the diameter of the wheel. ANSWER = m 2)Determine the effort required to ...
Monday, May 20, 2013 at 12:16pm

Chemistry
In the system A(g) + 2B(g)  2C(g) + 2D(g) H=21 kJ/mol, it is possible to increase the quantity of C by: a) adding a catalyst b) decreasing the [B] c) increasing the pressure d) increasing the temperature - I think it is b ? Am i right?
Monday, May 20, 2013 at 12:12am

Social studies
How did monteqeieus system reflect John lockes ideas about government ?
Sunday, May 19, 2013 at 3:00pm

Physics HELPPP PLEASEEE
A 0.60 kg sphere rotates around a vertical shaft supported by two strings, as shown. If the tension in the upper string is 18 N. Calculate the tension in the lower string? the rotation rate (in rev/min) of the system?
Sunday, May 19, 2013 at 2:41pm

Physics
A system consisting of two fixed and two movable pulleys has a mechanical advantage of 4.00. If a force of 124 N is exerted, which weight can be raised?
Sunday, May 19, 2013 at 12:41am

Mathematics
The temperature, T (in ºF), of a car's radiator during the first 4 minutes (t 4) is given by T = 6.2t2 +12t +32. How long does it take the temperature to reach 120 ºF after the car has begun operating?
Sunday, May 19, 2013 at 12:37am

Algebra
I need help with two math problems. 1. A triangle has vertices (1, 4), (1, 1), and (-3, 1). The triangle is dilated by a scale factor of 2, then translated 5 units up, and then rotated 90 degrees counterclockwise about the origin. What are the vertices of the image of the ...
Sunday, May 19, 2013 at 12:10am

Physics
Three objects are connected on an inclined table as shown in the diagram below. The objects have masses 8.0 kg, 4.0 kg and 2.0 kg as shown, and the pulleys are frictionless. The tabletop is rough, with a coefficient of kinetic friction of 0.47, and makes an angle of 20.0° ...
Saturday, May 18, 2013 at 9:29pm

Sociology of Sports
Would Someone PLEASE HELP? 1.Deviant overconformity is associated with some forms of violence in sports. The roots of this violence are grounded in (d) A. a desire for self-fulfillment and personal satisfaction. B.a lack of loyalty to team rules. C.the desire to gain ...
Saturday, May 18, 2013 at 1:47pm

Algebra 2
Solve the system: y^2 - 4x^2 = 4 and y = 2x. (-1,-2)?
Saturday, May 18, 2013 at 9:19am

Algebra 2
Solve the system, 4x^2 + y^2 = 20 and y = 4x. (square root of 10/2, 2 square root of 10)?
Friday, May 17, 2013 at 10:08am

MATHS
Find the number of real solutions of the system of equations. x^2−y^2=z y^2−z^2=x z^2−x^2=y
Friday, May 17, 2013 at 6:16am

Algebra
Find the number of real solutions of the system of equations. x^2−y^2=z y^2−z^2 =x z^2−x^2 =y
Thursday, May 16, 2013 at 7:18pm

science
Exhibit a behaviour that you do every day that you think is influenced by heredity and environment. Describe how three of the seven modern perspectives/approaches of psychology would be used to explain your behavior. Make sure that your discussion is not too personal in nature...
Wednesday, May 15, 2013 at 10:20pm

Anatomy & Physiology
Although all of the structures of the respiratory system are in contact with the circulatory system, which respiratory structure is most closely associated with dense network of capillaries? A. pharynx B. vocal folds C. trachea D. alveoli
Wednesday, May 15, 2013 at 7:56pm

psychology
Exhibit a behaviour that you do every day that you think is influenced by heredity and environment. Describe how three of the seven modern perspectives/approaches of psychology would be used to explain your behavior. Make sure that your discussion is not too personal in ...
Wednesday, May 15, 2013 at 5:23pm

psychology
Exhibit a behaviour that you do every day that you think is influenced by heredity and environment. Describe how three of the seven modern perspectives/approaches of psychology would be used to explain your behavior. Make sure that your discussion is not too personal in nature...
Wednesday, May 15, 2013 at 5:15pm

physics/chemistry(Thermodynamics)!!!!!helppppp!
In a certain chemical process,a lab technician supplies 254 j of heat to a system. At the same time,73 j of work are done on the system by iys surroundings.What is the increase in the internal energy of the system?
Wednesday, May 15, 2013 at 9:57am

Justice system
Detectives more typically focus their energies on homicide and rape cases, as opposed to burglary and robbery cases, because: A. there is political pressure to do so. B. the victims can more often provide clues that make the cases easier to solve. C. insurance companies can ...
Tuesday, May 14, 2013 at 4:02pm

Justice system
The organization of policing has both bureaucratic and __________ characteristics. A. chaotic B. civilian C. military D. corporate im confused between B n C 2. “Strategic leniency” in police management refers to: A. police discretionary behavior during encounters ...
Tuesday, May 14, 2013 at 3:41pm

Justice system
1. Customs and Border Protection (CBP) is part of the: A. Department of Homeland Security. B. Bureau of Dangerous Drugs. C. Drug Enforcement Administration (DEA). D. U.S. Marshals Service. is it A 2. The most visible private police agency during 19th-century America was the: A...
Tuesday, May 14, 2013 at 3:29pm

Justice system
1. __________ are the largest and most visible segment of the criminal justice system. A. The police B. Court clerks C. The courts D. Attorneys is it A 2. Structurally, policing in the United States is: A. centralized. B. decentralized. C. interdependent. D. nationalized. is ...
Tuesday, May 14, 2013 at 3:18pm

Social Studies
The spread of the factory system resulted in: A. an increase in home production B. increased exports of British cotton good C. poorer quality of iron D. improved working conditions in factories. The industrial Revolution created new jobs in all of the following expect: A. ...
Tuesday, May 14, 2013 at 1:50pm

MATH
For what integer 0<n<1000, does the following system of n linear equations have no complex solution? −10a1a1a1⋮a1+a2−10a2+a​2+a2+a3+a3−10a3+a3+…+…+&​#133;+…+an+an+an−10an=9=99=99​9⋮=10n−1 ...
Tuesday, May 14, 2013 at 9:41am

Algebra Please Help
Find the sum of integers c for all triples of integers (a,b,c),a≤b≤c, that satisfy the system of equations a^2−bc=91 b^2−ac=91 c^2−ab=91 Details and assumptions If a number c appears in several different triples (a,b,c), it must be counted with ...
Monday, May 13, 2013 at 11:04pm

Physical Education
(a) Calculate the average blood velocity in the major arties given that the aorta has a radius of 1.0 cm, the blood velocity is 30 cm/s in the aorta, and the total cross-sectional area of the major arties is 20 cm2 (b) What is the total flow rate? (c) On the assumption that ...
Monday, May 13, 2013 at 10:29pm

HARD CHEM QUESTION- any help appreciated
Phosgene (COCl2) is a poisonous gas that dissociates at high temperature into two other poisonous gases, carbon monoxide and chlorine with equilibrium constant Kp = 0.0041 at 600 K. Find the equilibrium composition of the system after 0.124 atm of COCl2 is allowed to reach ...
Monday, May 13, 2013 at 8:48pm

Thermodynamics
In a multiple-device flow system, I want to determine a state property. Where should I look for information, upstream or downstream?
Monday, May 13, 2013 at 7:18pm

Physical Science
A dentist’s chair with a patient in it weight 2100N. The output plunger of a hydraulic system begins to lift the chair, when the dentist’s foot applies of 55N to the input piston. Neglect any height difference between the plunder and the piston. What is the ratio of ...
Monday, May 13, 2013 at 2:25pm

algebra!!!! please help me!!!!
Find the number of real solutions of the system of equations. x^2−y^2=z y^2−z^2=x z^2−x^2=y
Monday, May 13, 2013 at 10:24am

PreCalculus
PLEASE HELP ME ASAP!!!!!!!!!!!! :) I really need to remember on how to do this equation. Solve the system algebraically. y=25x^2+x 9x+y=3
Sunday, May 12, 2013 at 10:31pm

Physics- Simple machines
A wheel and axle arrangement has an axle with a diameter of 25cm. A rope is wrapped around the axle and is supporting a load of 2 tonnes. 1) If the mechanical advantage of the system is 30, determine the diameter of the wheel___________m. 2)Determine the effort required to ...
Sunday, May 12, 2013 at 7:04pm

physical chemistry
The system N2O4 <--->2NO2 maintained in a closed vessel at 60º C & a pressure of 5 atm has an average (i.e. observed) molecular weight of 69, calculate Kp. At what pressure at the same temperature would the observed molecular weight be (230/3)
Sunday, May 12, 2013 at 11:41am

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