Monday

January 16, 2017
Total # Posts: 858

**Physics**

The Ultimate strength of a round steel rod is 630.000MPa. If a factor of safety of 5.000 is required, what is the maximum permissible load for the rod if it has a diameter of 3.000cm? ANS = kN (Round to 3 decimal places) Safety = 5.000 Rod diameter = 3.000cm = 0.03m Ultimate ...

*July 2, 2013*

**Physics**

A uniform bar 1.000 meters in length and having a cross sectional area of 10.000cm^2 is subjected to a loading of 5750.000 Newtons. This load causes an extension to the bar length of 2.740mm. Calculate the stress and the strain produced. ANS 1 = kPa (Round to 3 decimal places...

*July 2, 2013*

**Physics**

A steel bar has a rectangular cross section measuring 1.000cm by 2.900cm and is 8.700m in length. A load of 189000.00N causes the bar to extend 1.500mm. Calculate the stress and strain produced. ANS 1 = kPa (3 decimal places) ANS 2 = (6 decimal places) 1.000cm = 0.01m 2.900cm...

*July 2, 2013*

**Physics**

The Ultimate strength of a round steel rod is 630.000MPa. If a factor of safety of 5.000 is required, what is the maximum permissible load for the rod if it has a diameter of 3.000cm? ANS = kN (Round to 3 decimal places) Safety = 5.000 Rod diameter = 3.000cm = 0.03m Ultimate ...

*July 2, 2013*

**Physics**

What is the factor of safety of a steel hanger having an ultimate strength of 630.000MPa and supporting a load of 65000.000N. The steel hanger in question has a cross sectional area of 5.300cm. ANS = (Round to 3 decimal places) Load = 65000.000N ultimate strength = 630.000MPa...

*July 2, 2013*

**Physics**

What is the factor of safety of a steel hanger having an ultimate strength of 630.000MPa and supporting a load of 65000.000N. The steel hanger in question has a cross sectional area of 5.300cm. ANS = (Round to 3 decimal places) Load = 65000.000N ultimate strength = 630.000MPa...

*July 1, 2013*

**Physics**

The Ultimate strength of a round steel rod is 630.000MPa. If a factor of safety of 5.000 is required, what is the maximum permissible load for the rod if it has a diameter of 3.000cm? ANS = kN (Round to 3 decimal places) Safety = 5.000 Rod diameter = 3.000cm = 0.03m Ultimate ...

*July 1, 2013*

**Physics**

A steel bar has a rectangular cross section measuring 1.000cm by 2.900cm and is 8.700m in length. A load of 189000.00N causes the bar to extend 1.500mm. Calculate the stress and strain produced. ANS 1 = kPa (3 decimal places) ANS 2 = (6 decimal places) 1.000cm = 0.01m 2.900cm...

*July 1, 2013*

**Physics**

A uniform bar 1.000 meters in length and having a cross sectional area of 10.000cm^2 is subjected to a loading of 5750.000 Newtons. This load causes an extension to the bar length of 2.740mm. Calculate the stress and the strain produced. ANS 1 = kPa (Round to 3 decimal places...

*July 1, 2013*

**Physics**

The ultimate strength of a steel rod is 600.000MPa. if the factor of safety 3.000 is required, what is the maximum permissible load for the rod if it has a diameter of 6.000cm? ANS = kN (Round to 3 decimal place) Ultimate strength = 600.000MPa = 600000000Pa = 600 * 10^6 Factor...

*July 1, 2013*

**Physics**

1) Calculate the tensile stress in a 33.000mm diameter rod subjected to a pull of 30.000kN. ANS= MPa (Round to 3 decimal places) Diameter = 33.000mm = 0.033m 30.000kN = 30000N Area = pi*d^2/4 = 3.1416 * 0.033^2/ 4 = 3.1416 *0.001089/ 4 = 0.0034212024/ 4 = 8.553006*10^-4 = 0....

*July 1, 2013*

**Pyhsics(Stress&Strain)**

1) Calculate the tensile stress in a 33.000mm diameter rod subjected to a pull of 30.000kN. ANS= MPa (Round to 3 decimal places) Diameter = 33.000mm = 0.033m 30.000kN = 30000N Area = pi*d^2/4 = 3.1416 * 0.033^2/ 4 = 3.1416 *0.001089/ 4 = 0.0034212024/ 4 = 8.553006*10^-4 = 0....

*June 29, 2013*

**Physics(Sress&Strain)**

The ultimate strength of a steel rod is 600.000MPa. if the factor of safety 3.000 is required, what is the maximum permissible load for the rod if it has a diameter of 6.000cm? ANS = kN (Round to 3 decimal place) Ultimate strength = 600.000MPa = 600000000Pa = 600 * 10^6 Factor...

*June 29, 2013*

**Physics(Stress&Strain)**

A uniform bar 1.000 meters in length and having a cross sectional area of 10.000cm^2 is subjected to a loading of 5750.000 Newtons. This load causes an extension to the bar length of 2.740mm. Calculate the stress and the strain produced. ANS 1 = kPa (Round to 3 decimal places...

*June 29, 2013*

**Physics(Stress&Strain)**

A steel bar has a rectangular cross section measuring 1.000cm by 2.900cm and is 8.700m in length. A load of 189000.00N causes the bar to extend 1.500mm. Calculate the stress and strain produced. ANS 1 = kPa (3 decimal places) ANS 2 = (6 decimal places) 1.000cm = 0.01m 2.900cm...

*June 29, 2013*

**Physics(Stress&Strain)**

The Ultimate strength of a round steel rod is 630.000MPa. If a factor of safety of 5.000 is required, what is the maximum permissible load for the rod if it has a diameter of 3.000cm? ANS = kN (Round to 3 decimal places) Safety = 5.000 Rod diameter = 3.000cm = 0.03m Ultimate ...

*June 29, 2013*

**Physics (Stress & Strain)**

What is the factor of safety of a steel hanger having an ultimate strength of 630.000MPa and supporting a load of 65000.000N. The steel hanger in question has a cross sectional area of 5.300cm. ANS = (Round to 3 decimal places) Load = 65000.000N ultimate strength = 630.000MPa...

*June 29, 2013*

**Physics(Stress&Strain)**

What is the factor of safety of a steel hanger having an ultimate strength of 630.000MPa and supporting a load of 65000.000N. The steel hanger in question has a cross sectional area of 5.300cm. ANS = (Round to 3 decimal places) Load = 65000.000N ultimate strength = 630.000MPa...

*June 28, 2013*

**Physics (Stress&Strain)**

The Ultimate strength of a round steel rod is 630.000MPa. If a factor of safety of 5.000 is required, what is the maximum permissible load for the rod if it has a diameter of 3.000cm? ANS = kN (Round to 3 decimal places) Safety = 5.000 Rod diameter = 3.000cm = 0.03m Ultimate ...

*June 28, 2013*

**Physics (Stress & Strain)**

A steel bar has a rectangular cross section measuring 1.000cm by 2.900cm and is 8.700m in length. A load of 189000.00N causes the bar to extend 1.500mm. Calculate the stress and strain produced. ANS 1 = kPa (3 decimal places) ANS 2 = (6 decimal places) 1.000cm = 0.01m 2.900cm...

*June 28, 2013*

**Physics (Stress&Strain)**

A uniform bar 1.000 meters in length and having a cross sectional area of 10.000cm^2 is subjected to a loading of 5750.000 Newtons. This load causes an extension to the bar length of 2.740mm. Calculate the stress and the strain produced. ANS 1 = kPa (Round to 3 decimal places...

*June 28, 2013*

**Physics(Stress & Strain)**

1) Calculate the tensile stress in a 33.000mm diameter rod subjected to a pull of 30.000kN. ANS= MPa (Round to 3 decimal places) Diameter = 33.000mm = 0.033m 30.000kN = 30000N Area = pi*d^2/4 = 3.1416 * 0.033^2/ 4 = 3.1416 *0.001089/ 4 = 0.0034212024/ 4 = 8.553006*10^-4 = 0....

*June 28, 2013*

**Physics (Stress & Stain)**

Load = Allowable Strength * Area = Allowable Strength * (pi*d^2/4) =200*10^6*pi*.06^2/4 =200000000*3.1416*.0036/4 =2261952/4 =565488N =565.488kN Please check. Thank you.

*June 28, 2013*

**Physics (Stress & Stain)**

The ultimate strength of a steel rod is 600.000MPa. if the factor of safety 3.000 is required, what is the maximum permissible load for the rod if it has a diameter of 6.000cm? ANS = kN (Round to 3 decimal place) Ultimate strength = 600.000MPa = 600000000Pa = 600 * 10^6 Factor...

*June 28, 2013*

**Physics (Stress & Strain)**

The ultimate strength of a steel rod is 550.000MPa. If the factor of safety of 3.000 is required, what is the maximum permissible load for the rod if it has a diameter of 4.100cm? ANS = kN (Round to 3 decimal places) ultimate strength = 550.000MPa Factor of safety = 3.000 Rod ...

*June 28, 2013*

**Physics (Stress & Strain)**

What is the factor of safety of a steel hanger having an ultimate strength of 550.000MPa and supporting a load of 79000.000N. The steel hanger in question has a cross sectional area of 7.000cm^2. ANS = (Round to 3 decimal places) ultimate strength = 550.000MPa load = 79000....

*June 28, 2013*

**Physics (Stress & Strain)**

What is the factor of safety of a steel hanger having an ultimate strength of 550.000MPa and supporting a load of 79000.000N. The steel hanger in question has a cross sectional area of 7.000cm^2. ANS = (Round to 3 decimal places) ultimate strength = 550.000MPa load = 79000....

*June 27, 2013*

**Physics (Stress & Strain)**

The ultimate strength of a steel rod is 550.000MPa. If the factor of safety of 3.000 is required, what is the maximum permissible load for the rod if it has a diameter of 4.100cm? ANS = kN (Round to 3 decimal places) ultimate strength = 550.000MPa Factor of safety = 3.000 Rod ...

*June 27, 2013*

**Physics (Stress & Strain)**

A hole 3cm in diameter is to be punched out of a steel plate 8cm thick. The shear stress of the material is 670GPa. What load is required on the punch? 3cm = 0.03m 8cm = 0.08m Lateral surface area (As) = pi*D*h = 3.1416 * .03m * .08m = 3.1416 * .0024m = .007539m Force = Stress...

*June 26, 2013*

**Physics (Stress & Strain)**

A uniform bar 1.900 meters in length and having a cross sectional area of 11.000cm^2 is subject to a loading of 5450.000 Newtons. this load causes an extension to the bar length of 2.420mm. Calculate the stress and strain produced. 11cm = .11m 2.420mm = .02420m length = 1.9m ...

*June 26, 2013*

**Physics (Stress & Strain)**

A hole 3cm in diameter is to be punched out of a steel plate 8cm thick. The shear stress of the material is 670GPa. What load is required on the punch? 3cm = 0.03m 8cm = 0.08m Lateral surface area (As) = pi*D*h = 3.1416 * .03m * .08m = 3.1416 * .0024m = .007539m Force = Stress...

*June 26, 2013*

**Physics (Stress & Strain)**

A steel bar has a rectangular cross section measuring 1.000cm by 2.500cm and is 8.100m in length. A load of 150000.000N causes the bar to extend 2.000mm. Calculate the stress and strain. Area = l*w = 1.000cm*2.500cm = 2.500cm = 0.025m = 0.025m*8.100m = 0.2025m Stress = Load/ ...

*June 24, 2013*

**Physic (Stress & Strain)**

A uniform bar 1.900m in length and having a cross sectional area of 11.000cm^2 is subject to a loading of 5450.000N. this load causes an extension to the bar length of 2.420mm. Calculate the stress and the strain produced. Area = 11.000cm^2 = 11*10^-3m Load = 5450.000N Stress...

*June 24, 2013*

**Physics (Stress & Strain)**

Stress = force/ area = 87500N/ 5cm^2 = 17500 = 70000/ 17500 ANS = 4 Is that correct?

*June 24, 2013*

**Physics (Stress & Strain)**

What is the factor of safety for a steel hanger having an ultimate strength of 70000N per cm^2 and supporting a load of 87500N. The hanger has a cross sectional area of 5cm^2. Factor of safety = ultimate stress/ allowable stress = 70000/87500 = 0.8 Have I done this correctly?

*June 24, 2013*

**Physics (Stress & Strain)**

A hole 3cm in diameter is to be punched out of a steel plate 8cm thick. The shear stress of the material is 670GPa. What load is required on the punch? First find the area: A = pi*d^2/ 2 = 3.1416 * 3cm^2/ 2 = 3.1416 * 9/ 2 = 28.2744/ 2 = 7.0686cm Stress = 670GPa Second, covert...

*June 24, 2013*

**Math-algebra-Steve**

148

*June 24, 2013*

**Physics (Stress & Strain)**

1) Calculate the tension stress in a 21.00mm diameter rod subjected to a pull of 30.000kN. 21mm =0.021m 30.000kN = 30000N A = pi*d^2/4 = 3.1416 * (0.021)^2m^2/ 4 = 3.1416 * 0.000441/ 4 = 0.0013854456/ 4 = 0.0003463614 Stress = Load/ Area = 30000/ 0.0003463614 = 86614732.47N = ...

*June 23, 2013*

**Physics (Stress & Strain)**

What is the factory of safety of a steel hanger having an ultimate strength of 630.000MPa and supporting a load of 61000.000N. The steel hanger in question has a cross sectional area of 6.500cm^2. ANS = (Round to 3 decimal places) 6.500cm = 0.065m Load = 61000.000N Ultimate ...

*June 23, 2013*

**Physic (Stress & Strain)**

1) Calculate the tension stress in a 21.00mm diameter rod subjected to a pull of 30.000kN. 21mm =0.021m 30.000kN = 30000N A = pi*d^2/4 = 3.1416 * (0.021)^2m^2/ 4 = 3.1416 * 0.000441/ 4 = 0.0013854456/ 4 = 0.0003463614 Stress = Load/ Area = 30000/ 0.0003463614 = 86614732.47N = ...

*June 23, 2013*

**Physics (Stress & Strain)**

A uniform bar 1.900m in length and having a cross sectional area of 10.500cm^2 is subject to a loading of 5550.000N. This load causes an extension of the bar length of 1.100mm. Calculate the stress and strain produced. Stress = Load/ Area Strain = Change in length/ length ...

*June 23, 2013*

**Physics**

What is the factor of safety of a steel hanger having an ultimate strength of 550.000MPa and supporting a load of 64000.000N. The steel hanger in question has a cross sectional area of 7.600cm^2 ANS= Round to 3 decimal places Safety factor = design load/ load = 550.000MPa = ...

*June 22, 2013*

**Physics**

What is the factor of safety of a steel hanger having an ultimate strength of 550.000MPa and supporting a load of 64000.000N. The steel hanger in question has a cross sectional area of 7.600cm^2 ANS= Round to 3 decimal places Safety factor = design load/ load = 550.000MPa = ...

*June 22, 2013*

**Physics**

A tie bar is made of a material having a tensile strength of 231MPa and has to carry a load of 225kN. What is the diameter of the bar if a factor of safety of 7 is applied? Where do I begin?

*June 22, 2013*

**Physics**

Safety factor = design load/ load = 550.000MPa = 550000000Pa = 550000000/ 64000 = 8593.75 tension design = 550MPa * 0.076M^2 = 18.000 Have I messed thing up?

*June 21, 2013*

**Physics**

Sorry i missed this part of the question: The steel hanger in question has a cross sectional area of 7.600cm^2

*June 21, 2013*

**Physics**

What is the factor of safety of a steel hanger having an ultimate strength of 550.000MPa and supporting a load of 64000.000N. ANS= Round to 3 decimal places Where do I begin?

*June 21, 2013*

**Physics**

A tie bar is made of a material having a tensile strength of 231MPa and has to carry a load of 225kN. What is the diameter of the bar if a factor of safety of 7 is applied? Where do I begin?

*June 21, 2013*

**math**

634

*June 21, 2013*

**Physics**

What is the factor of safety of a steel hanger having an ultimate strength of 550.000MPa and supporting a load of 64000.000N. The steel hanger in question has a cross sectional area of 7.600cm^2. Answer = (Round to 3 decimal places)

*June 8, 2013*

**Physics**

1. A train traveling at a speed of 110km/h decelerates for 20 seconds. During that time it travels 450 meters. A) What is the acceleration? = m/s^2 B) What is its speed after deceleration? = km/h Initial velocity (u) = 110km/h Time (t) = 20s Distance = 450m Using this formula ...

*June 7, 2013*

**Physics**

1. A train traveling at a speed of 110km/h decelerates for 20 seconds. During that time it travels 450 meters. A) What is the acceleration? = m/s^2 B) What is its speed after deceleration? = km/h I need help with which formula to use and how to use it to find the correct ...

*June 6, 2013*

**Physics**

1. A train traveling at a speed of 150km/h decelerates for 15 seconds. During that time it travels 400 meters. A) What is the acceleration? = m/s^2 B) What is its speed after deceleration? = km/h I need help with which formula to use and how to use it to find the correct ...

*June 6, 2013*

**Physics**

1. A train traveling at a speed of 110km/h decelerates for 20 seconds. During that time it travels 450 meters. A) What is the acceleration? = m/s^2 B) What is its speed after deceleration? = km/h I need help with which formula to use and how to use it to find the correct ...

*June 6, 2013*

**Physics**

1. A train traveling at a speed of 150km/h decelerates for 15 seconds. During that time it travels 400 meters. A) What is the acceleration? = m/s^2 B) What is its speed after deceleration? = km/h I need help with which formula to use and how to use it to find the correct ...

*June 6, 2013*

**Physics**

1. A train traveling at a speed of 150km/h decelerates for 15 seconds. During that time it travels 400 meters. A) What is the acceleration? = m/s^2 B) What is its speed after deceleration? = km/h I need help with which formula to use and how to use it to find the correct ...

*June 5, 2013*

**Physics**

1. A car is traveling at 85km/h, find the following: A) Its speed in m/s u = 85km/h = 85km/h * 1000m/km/ 60s/min * 60min/m/h = 85000/ 3600 = 23.61 ANS = 23.61m/s B) How many meters will it travel in 8 seconds = 23.61m/s * 8s ANS = 188.88m C) How long (in seconds) will it take ...

*June 5, 2013*

**Velocity**

An object is thrown directly downwards from a height of 60m with an initial velocity of 11m/s. What will be its velocity on impact? v^2 = U^2 + 2as a= 9.81m/s^2 u = 11m/s s = 60m v^2 = 11m/s + 2 * 9.81m/s^2 * 60 = 1188.2m^2/s^2 = square root of 1188.2m^2/s^2 = 34.47m/s Is this...

*June 3, 2013*

**Acceleration**

Which of the following statements about acceleration is true. Acceleration is: A) time/ velocity B) force/ time C) the rate of change of displacement D) time/ force E) the result of an unbalanced force exerted on a body. ANS = E Is this correct??

*June 3, 2013*

**Acceleration**

Which of the following statements about acceleration is true. Acceleration is: A) time/ velocity B) force/ time C) the rate of change of displacement D) time/ force E) the result of an unbalanced force exerted on a body. ANS = E Is this correct??

*June 3, 2013*

**Linear velocity/ acceleration**

A body moves 180 degrees from point A to point B in a semi circle. The diameter of the semi circle is 2m. Calculate the distance traveled between point A and point B. C = pi * d = 3.1416 * 2m = 6.283 = 6.283/ 2 = 3.141 ANS = 3.141 Is this done correctly??

*June 3, 2013*

**Physics**

Camera lenses are described in terms of their focal length. A 50.0 mm lens has a focal length of 50.0 mm (a) A camera with a 50 mm lens is focused on an object 4.0 m away. Locate the image. (b) A 980 mm lens is focused on an object 125 m away. Locate the image.

*May 21, 2013*

**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 ...

*May 20, 2013*

**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 ...

*May 12, 2013*

**Physics**

Simple Machines A simple wheel and axle has a wheel diameter of 2.3m and an axle diameter of 92mm. If an effort of 26N is required to raise a mass of 16 kg what is the efficiency of the machine? A- 2.46% B- 95.3% C- 24.1% D- 20.1% E- 65.5% I am having a problem determining ...

*May 11, 2013*

**MATH**

the area of a certain rectangle is 288yd squared. the perimeter is 68yd. if you double the length and width,what will be the area and perimeter of the new rectangle?

*May 9, 2013*

**Physics**

300N 200N ? |- 8m -|- 5m - |_____________________________________| R2 10M | 10m R1 A beam having a length of 20 metres is pivoted at its mid point. A 200 newton load is located at a point 5 metres from the right hand end of the beam. A 300 newton load is located at a point 8 ...

*May 4, 2013*

**Physics**

A beam having a length of 20 metres is pivoted at its mid point. A 200 newton load is located at a point 5 metres from the right hand end of the beam. A 300 newton load is located at a point 8 metres from the right hand end. In order to be in equilibrium, what load is required...

*May 4, 2013*

**physics**

A body of 150kg is located at a height of 45m. If allowed to fall freely to the ground. What will be its velocity on impact?

*April 29, 2013*

**Physics**

A body is moving north at 12m/s and 5 seconds later it has a velocity of 30m/s in the same direction. What was the acceleration of the body?

*April 27, 2013*

**Physics**

A Body with a mass of 150kg is located at a height of 45 m. If allowed to fell freely to the ground. What will be its velocity on impact? KE= 1/2*m*v^2 PE= m*g*h 1/2*m*v^2= m*g*h 1/2*150kg*45m*v^2= 150kg*9.81*45m 3375* v^2= 66217.5 3375*v^2/3375= 66217.5/3375 v^2= 19.62m/s Is ...

*April 27, 2013*

**Physics**

1/2* 75kg* v^2= 75kg* 9.81* 20-0 37.5* v^2= 14715 37.5* v^2/ 37.5= 14715/37.5 v^2= 14715/37.5 v^2= 392.4 m/s

*April 27, 2013*

**Physics**

A body with a mass of 75 kg is located at a height of 20 m. If it is allowed to free fall to the ground. What will be its velocity on impact?

*April 27, 2013*

**Math**

Find the total surface area of a closed cylinder having a diameter of 1.000 m and 15.000 mm and a length of 12.000 m and 55.000 mm. (Round the answer to 3 decimal places) 1 m = 1000 mm Total surface area= pi*D*h+2*(0.7854*D^2)

*April 19, 2013*

**Math**

Calculate the mass of water in kg and tonne contained in a rectangular tank with the following dimensions: width of 3.2000 metres height of 2.000 metres length of 8.000 metres. (Round answers to 3 decimal places) Answers: l= 8.000 1 tonne= 1000 kg w= 3.200 h= 2.000 V= l*w*h V...

*April 19, 2013*

**math**

a steel tube has an outside diameter of 15 cm, an inside diameter of 13 cm, and is 3.7 m long. The volume of the steel contained in the tube in cubic cm is ? V= pi*r^2*h V= pi*7.5cm^2*370cm V= pi*56.25cm*370cm V= 65384.397 V= pi*r^2*h V= pi*6.5cm^2*370cm V= pi*42.25cm*370cm V...

*April 19, 2013*

**math**

A steel tube has an outside diameter of 15 cm, an inside diameter of 13 cm,and is 3.7 m long. What is the volume of the steel contained in the tube in cubic cm is?

*April 19, 2013*

**Math**

358

*April 19, 2013*

**Math**

PLEASEEE Help. I need the answer and explanation please.

*April 7, 2013*

**Math**

How do you convert 7 to the square root of 2 into a decimal? Also, how do you convert 3 to the square root of 8 into a decimal? Thanks

*April 7, 2013*

**Math**

Radio stations use three or four letters for their call letters(name). The first letter must be a W or K. How many different call letters are possible if repeated letters are allowed? And not allowed?

*March 29, 2013*

**Math**

Frank has 3 nickels, 5 dimes, and 2 quarters. What is the range, mean, median, and mode of the values of Frank's coins?

*March 18, 2013*

**science**

Zinc chloride solution is poured into a solution of ammonium carbonate. need conventional, ionic and net ionic equations thanks

*March 12, 2013*

**do ur work**

idk u look it up and find it and u need to do ur work

*March 1, 2013*

**Physics**

One of the most powerful cranes in the world, operating in Switzerland, can slowly raise a load of 6000 tonne to a height of 12 m. (1 tonne = 1000 kg) The acceleration of gravity is 9.81 m/s2 . How much work is done by the crane? Answer in units of MJ I found it by using Work...

*February 26, 2013*

**spainsh 2 help please**

1. Si yo Tuviera Hambre, YO VOLVERIA A COMER 2. Si el bebe TUVIERA sueï¿½o, EL ESTARIA DORMIDO. 3. ï¿½Que te necesito to (gustar) pedir? I'm not sure but here are some options: Que te gustaria pedir? te gustaria pedir algo? 4.MEGUSTAN ...

*February 26, 2013*

**Math**

If a train traveled at 480 kilometers per hour for 1/4 hour,what distance would the train travel?

*February 12, 2013*

**Physics**

The condensing pressure is 260psig and the metering device inlet temperature is 100 degrees for R-22 what is the total subcooling in the system?

*February 8, 2013*

**chemistry**

I wasn't given any densities...except to assume that water has a density of 1.00 g/cm^3 in previous problems.

*February 7, 2013*

**chemistry**

I know the molecular weights of the acids: HCl -- 36.5 H2SO4 -- 98.0 H3PO4 -- 98.0

*February 7, 2013*

**chemistry**

I have no idea how to begin solving these problems... Calculate the normality of a 1.0 molal solution of each of the following acids: a. HCl b. H2SO4 c. H3PO4 Calculate the molality of a 1.0 normal solution of each of the following acids: a. HCl b. H2SO4 c. H3PO4

*February 7, 2013*

**Math**

take the square of the 1st number & the square root of 2nd number 09+36=75 (81-6=75) 05+04=23 (25-2=23) 08+01=63 (64-1=63) 06+16=32 (36-4) 09+09=78 (81-3) 03+09=6 (9-3=6) 03+81=?? (9-9=0)

*February 7, 2013*

**math**

C D A D B Answers, trust.

*February 4, 2013*

**Physics**

If the specific volume of red brass is 0.001865 ft/3lb. What would be the density? Thanks!

*February 1, 2013*

**Calc**

Line L is tangent to the graph of y= x- (x^2/500) at the point Q a) find the x coordinate of point Q B) right an equation for line L C) suppose the graph above were a hill (measured in feet). There is a 50 foot tree growing vertically at the top of the hill. Does a spot light...

*January 25, 2013*

**Math**

Which is a molecule of phosphoric acid contains 3 atoms of hydrogen to every 4 atoms of oxygen. Could a compound containing 16 atoms of oxygen and 12 atoms of hydrogen be phosphoric acid? Explain. Mr.Lee has 3/10 of his gross salary deducted for taxes. If Mr.Lee makes $900 a ...

*January 6, 2013*

**algebra**

y=2x+1 yes 2x

*January 4, 2013*

**Question (plz read)**

NO because it must be professional

*December 26, 2012*

**physics**

A 2561-kg van runs into the back of a 823-kg compact car at rest. They move off together at 8.5 m/s. Assuming the friction with the road is negligible, calculate the initial speed of the van.

*December 18, 2012*

**physics**

A hockey player makes a slap shot, exerting a constant force of 31.4 N on the hockey puck for 0.13 s. What is the magnitude of the impulse given to the puck?

*December 18, 2012*