Monday

January 26, 2015

January 26, 2015

Number of results: 38,288

**math-physics**

How much work is done lifting a wrecking ball 6.50 m above the ground? So the formula for this problem would be: W=fs F=200kg S=6.50m (200)(6.50)=1300
*October 9, 2014 by ben green*

**ALgebra**

JUST A MOM TRYING TO HELP MY CHILD WITH UNDERSTANDING. DON'T KNOW HOW TO SOLVE THE SECOND PROBLEM Write equation for each segment. show your work. (-4,-3) (-3,-3) Y = mx + b 3 = 0(-4) +b 3 = 0 + b Y = x - 3 (1,-5) (6,-2) Y = mx + b -5 = 3/5 (1) + b -5 = 3/5 +b Don't really ...
*October 30, 2014 by DON'T UNDERSTAND*

**Genetics**

1. Why are we using more dilute cultures for the killing curve while we are using the arg selection culture at full strength? 2.How would you find the arg+ mutants on the killing curve plates? 3. when designing a protocol to produce auxotrophs for biochemical pathways, how ...
*March 31, 2007 by Mae*

***updated Chem**

I am wondering if my work makes sense for the following problem: Warm objects emit electromagnetic radiation in the infra-red region. Heat lamps employ this principle to generate infra-red radiation. Water absorbs infra-red radiation with wavelengths near 2.80um. Suppose this ...
*December 6, 2009 by GenChem*

**Calculus**

24. A pharmaceutical company has determined that a realistic model for the relationship between blood pressure (systolic) and the amount of a nerve drug designed to reduce the systolic pressure is given by the equation P=Pi + 2x - x^2. P is measured in millimeters of mercury ...
*November 11, 2007 by Molly*

**algebra**

_______________________________________ MATH133 Unit 1 Individual Project 2 A 1) The following graph shows the depreciation for the corporate airplane from 2006 to 2009. The plane was purchased new in 2006; therefore, x = 0 represents the year 2006. X – axis (horizontal) = ...
*October 10, 2011 by Michelle*

**Chemistry**

C2H2(g) + 2 H2(g)--> C2H6(g) Substance So (J/mol∙K) ∆Hºf (kJ/mol) C2H2(g 200.9 226.7 H2(g) 130.7 0 C2H6(g) -- -84.7 Bond Bond Energy (kJ/mol) C-C 347 C=C 611 C-H 414 H-H 436 If the value of the standard entropy change, ∆Sº for the reaction is -232.7 ...
*January 11, 2011 by Brenda*

**Chemistry**

C2H2(g) + 2 H2(g)--> C2H6(g) Substance So (J/mol∙K) ∆Hºf (kJ/mol) C2H2(g 200.9 226.7 H2(g) 130.7 0 C2H6(g) -- -84.7 Bond Bond Energy (kJ/mol) C-C 347 C=C 611 C-H 414 H-H 436 If the value of the standard entropy change, ∆Sº for the reaction is -232.7 ...
*January 12, 2011 by Brenda*

**chemistry**

C2H2(g) + 2 H2(g)--> C2H6(g) Substance So (J/mol∙K) ∆Hºf (kJ/mol) C2H2(g 200.9 226.7 H2(g) 130.7 0 C2H6(g) -- -84.7 Bond Bond Energy (kJ/mol) C-C 347 C=C 611 C-H 414 H-H 436 If the value of the standard entropy change, ∆Sº for the reaction is -232.7 ...
*January 13, 2011 by Brenda*

**algebra1**

What steps do I take in solving this problem? It is about graphing inequalities. 10x+4¡Ý9x+17 put the equation in the form of y ? x + constant. ? means greater than or less than. That is the first step. You are getting no more help until you start showing some thinking or work...
*March 23, 2007 by keshia*

**algebra**

1. You have recently found a location for your bakery and have begun implementing the first phases of your business plan. Your budget consists of an $80,000 loan from your family and a $38,250 small business loan. These loans must be repaid in full within 10 years. a. What ...
*March 16, 2010 by sally*

**Philosophy**

Write a 350-700 word response, in which you choose two or three Eastern philosophies and describe how they compare. Take sides, determine which philosophies are most persuasive, and explain why.
*January 21, 2008 by greatdanelola*

**physics**

The four tires of an automobile are inflated to a gauge pressure of 1.8 multiplied by 105 Pa. Each tire has an area of 0.025 m2 in contact with the ground. Determine the weight of the automobile. No idea how to start, please help.
*July 20, 2008 by Elisa*

**Stratford HS**

determine the volume in liters of hydrogen gas that would have been produced if 8.00 dm of magnesium had been used at a temperature of 24C and a barometric pressue of 762.8 torr
*February 18, 2010 by Courtney Venable*

**phy**

Determine the radial acceleration of the car at this time. If the curve were flat, what would the coefficient of static friction have to be between the tires and the roadbed to provide this acceleration with no slipping or skidding?
*September 18, 2010 by ami*

**Microeconomics**

Suppose a second nation has the following data. Plot the PPC, and then determine which nation has the comparative advantage in which activity. Show whether the two nations can gain from specialization and trade.
*October 17, 2010 by Tasha*

**physics**

two ropes attached to I beam (mass 500 kg). ropes make angles of 60 degrees with horizontal. Determine tension in each rope. I ended up with 2829 N for each. Correct? or could you explain more?
*November 7, 2010 by Anonymous*

**Science**

A projectile of mass 0.650 kg is shot straight up with an initial speed of 20.0 m/s. If the projectile rises to a maximum height of only 12.4 m, determine the magnitude of the average force due to air resistance.
*December 14, 2010 by Anonymous*

**physics**

consider 4 masses mA=1kg, mB=2kg, mC=3kg, mD=4kg, placed at the vertices of a square ABCD of side 4cm. Specify the position of G the center of mass of the system{A,B,C,D}. determine the position of G. Thank you :)
*January 3, 2011 by anna*

**chemistry**

Write electron configurations for the following ions, and determine which have noble-gas configurations. (Type your answer using the format [Ar] 4s2 3d10 4p2 for [Ar]4s23d104p2.) Ru2+ thanks
*January 20, 2011 by rebekah*

**physics**

The position of a point moving on a circular path is given by the equation s= 2t^3 + 6t^2 where s and t are measured in feet and seconds, respectively. The magnitude of the acceleration of the point is 60 fps2 when t = 2 sec. Determine the radius of the circle.
*January 28, 2011 by Stan*

**math**

Use a graph of f or some other method to determine what, if any, value to assign to f(a) to make f continuous at x = a. HINT [See Example 2.] (If there is no such value, enter NONE.) f(x) = x 2x2 − x ; a = 0
*February 4, 2011 by LA*

**University Physics**

Determine an equation for the total force needed to drag a box at constant speed across a surface with coefficient of kinetic friction uk when the force is applied at an angle theta.
*February 12, 2011 by Joshua*

**Statistics **

Twenty people are to be seated at 3 Circular restaurant tables that seat 8,7, and 5 people respectively. Determine the number of ways that this can be done. Express your answer in scientific notation to two decimal place.
*March 20, 2011 by Matt*

**Physics**

1. If a 500N person is skiing on a slope with an angle of incline of 67 degrees and there was a friction coefficient of 0.19, determine the person’s acceleration rate. If starting from rest, what is the overall displacement after 30 seconds?
*June 22, 2011 by Tina*

**Chemistry**

Assume tat you have a sample of a gas in a cylinder with a movable piston at constant pressure. Determine the volume of the gas if the absolute temperature is decreased by twenty-five percent.
*August 28, 2011 by Devin Boutte*

**Pre-Calculus**

I'm trying to finish up my pre-cal homework and I am stuck on 2 problems... ***determine the intervals over which the function is increasing, decreasing, or constant*** 32. f(x)=x^2-4x 33. f(x)=√x^2-1 (that's square root of x^2-1) thank you so much for the help =)
*September 17, 2011 by Cristina*

**Pre-Calculus**

I'm trying to finish up my pre-cal homework and I am stuck on 2 problems... ***determine the intervals over which the function is increasing, decreasing, or constant*** 32. f(x)=x^2-4x 33. f(x)=√x^2-1 (that's square root of x^2-1) thank you so much for the help =)
*September 17, 2011 by Cristina*

**physics**

When point charges q1 = +5.4 ìC and q2 = +8.3 ìC are brought near each other, each experiences a repulsive force of magnitude 0.69 N. Determine the distance between the charges. i used the eqution F=k(q1)(q2)/r^2 . i got 7.64E5 but it is not right .can you please help
*September 18, 2011 by kim taylor*

**liberal arts math 1**

Five hundred raffle tickets were sold for $2 each. A prize of $400 is to be awarded. If you buy one ticket, determine the expected value. What is the fair price for a ticket?
*October 9, 2011 by Caren*

**physics**

Two particle p and q starting from rest moves along a straight part covers the same distance in time tpandtq respectively.if the acceleration on of p is 4times that of q,determine the ratio of tpandtq
*October 23, 2011 by Segun*

**Statics**

A log of diameter D is available to be used as a beam carrying a uniformly distributed load of 400#/ft over a length of 32 feet. Determine the required diameter D necessary if Fb=1,200psi and Fv=100psi.
*December 7, 2011 by Jon*

**Physics**

A circular automobile racetrack is banked at an angle theta such that no friction between road and tires is required when a car travels at 28.0 m/s. If the radius of the track is 390 m, determine theta .
*February 11, 2012 by J*

**Physical Science: PLEASE HELP!!!!!**

A wooden raft 3 m long x 2 m wide x 20 cm thick floats on a freshwater lake. A) Determine the buoyant force? B) If the raft itself has a mass of 600 kg, how many 65-kg people could it support?
*February 23, 2012 by Kendra*

**geometry**

Determine the name of the quadrilateral that fits the given property. Only one pair of opposite sides is parallel. This quadrilateral is a _________. A. kite B. rectangle C. rhombus D. square E. trapezoid
*March 19, 2012 by Sarah*

**physics**

a fully loaded saturn V rocket has a mass of 2.9*10 to the power of 6 Kg. Its engine provides a thrust of 3.3*10 to the power of 7N(down). Determine its weight (force due to gravity) as it stands on a launching platform
*April 2, 2012 by Matt*

**Ireland**

Determine whether or not the following statement is a fact or an opinion: "Protestants and Catholics in Northern Ireland both feel threatened by the past and are reluctant to negotiate." What does it mean? pwetty pwease help me!!!
*April 12, 2012 by ♥rebel•stupidity=kathy*

**geometry**

A plot of land ABCD such that AB = 85m, BC = 75m, CD = 60m, DA = 50m and angle ACB =90 degrees . Determine the area of the plot in hectares correct to two decimal places
*May 27, 2012 by anonymous*

**math**

plot of land ABCD such that AB = 85m, BC = 75m, CD = 60m, DA = 50m and angle ACB =90 degrees . Determine the area of the plot in hectares correct to two decimal places
*May 27, 2012 by Anonymous*

**math**

Use algebra pieces and mental arithmetic to determine four consecutive odd numbers who sum is 64. Sketch and label your algebra piece model and explain how you solved the problem.
*June 2, 2012 by marcus*

**Physics**

A 22.0 kg sled is being pulled across a horizontal surface at a constant velocity. The pulling force has a magnitude of 78.0 N and is directed at an angle of 30.0° above the horizontal. Determine the coefficient of kinetic friction.
*September 27, 2012 by Anonymous*

**PHYSICS!!!**

Glycerine in water diffuses along a horizontal column that has a cross-sectional area of 2.0 cm2. The concentration gradient is 3.1 10-2 kg/m4, and the diffusion rate is found to be 5.4 10-15 kg/s. Determine the diffusion coefficient. Answer in m2/s
*November 11, 2012 by k*

**english**

Select the gerund phrase in the sentence below. Then, determine the noun function of the gerund. 1. Water skiing, sailing, and swimming are my favorite summer sports. 2. I enjoy playing the piano.
*November 16, 2012 by amber*

**cis**

1. Find a mortgage loan calculator to determine what your monthly payments would be on a new house borrowing $200,000 for 15 years at 3.5% interest. What is your monthly payment? (Include the URL)
*December 1, 2012 by jones*

**THEORY OF MACHINE**

A steel bar 10 m long and 10 cm * 2.5 cm in section. It is subjected to axial pull of 250 KN. Determine the intensities of normal and tangential stresses on a plane section at 60 degree to the longitudinal axis.
*January 12, 2013 by rajesh jain*

**Pre-Calculus**

Determine the number of triangles that can be formed with the given information. and if it forms two possible triangles solve all unknown angles and sides Angle A=116 degrees a=10 b=11
*April 7, 2013 by DW*

**Albebra 2**

A school wants to determine the average time it takes students to get to school. Every student coming off the bus is surveyed. What is the sampling method used? Does the sample have a bias?
*April 8, 2013 by Lea*

**English 3 questions**

How does cost determine which financial choice you make? What would your life be like without taxes? What are your choices to finance (pay for) a major purchase like your first car? thanks
*July 16, 2013 by Maya*

**solid mechanics**

A piece of material subjected to three mutually perpendicular stresses of 70, 56 and 84 Mpa. If E = 200GPa, Poisson's ratio = 0.28, determine (10) (a) Principal strains (b) Shear modules (c) Bulk modules.
*July 24, 2013 by Anonymous*

**Math**

The capital letter F can be formed by connecting the points (0,4),(5,4),(5,2),(2,2),(2,0),(4,0),(4,-2),(2,-2),(2,-7), and (0,-7), in this order. Determine the slope of the line that passes through the origin and divides the letter F into two regions of equal areas.
*August 23, 2013 by Kiki*

**Physics**

A 24.5-kg sled is being pulled across a horizontal surface at a constant velocity. The pulling force has a magnitude of 77.0 N and is directed at an angle of 30.0° above the horizontal. Determine the coefficient of kinetic friction.
*September 26, 2013 by Donna*

**phyics**

You are installing a new spark plug in your car, and the manual specifies that it be tightened to a torque that has a magnitude of 65 N·m. Using the data in the figure, determine the magnitude F of the force that you must exert on the wrench.
*November 1, 2013 by bobby*

**physics**

Two parallel plates are charged to a potential difference of 10.0 volts. Determine the maximum speed of an electron that starts from rest at the negative plate and travels towards the positive plate.
*February 18, 2014 by L@W*

**HELPPP ASAPPP**

An archeitect is designing a rectangular fountain for the city park. It's area is represented by 16x-40. Factor this binomial to determine the greatest lengh and width measurements that fountain could have?
*March 6, 2014 by kamleen*

**Math**

8. Sylvia is training for a triathlon. she cycles 6.25 km in 25 min. a) What is her average speed, in kilometres per hour? b) Solve a proportion to determine how long she would take to cycle 40 km. Us the speed in part A)
*May 6, 2014 by Annadona*

**Calc Help Please Again Last one!**

Write out the form of the partial fraction decomposition of the function appearing in the integral: integral (6x-58)/(x^2+2x-63) Determine the numerical values of the coefficients, A and B, where A <= B A=? B=? Thank you guys so much! =)
*May 16, 2014 by Josh *

**mechanics**

Regarding the figure above, there are three strings tied together suspending a block at rest. Determine the tension in the horizontal string if the mass of the block is 7.5kg. If needed, g=10ms2.
*July 6, 2014 by juanpro*

**MATH HELP asap PLEASE**

A plane is steering at S83degreesE at an airspeed of 550 km/h. the wind is from N70degreesE at 85 km/h. Determine the ground velocity of plane to one decimal. Use the cosine and sine law.
*October 24, 2014 by Tina*

**College Physics**

A 1.45kg mass oscillates according to the equation x=0.650cos8.10t, where x is in meters and t is in seconds.Determine the amplitude, frequency, total energy, and the potential and kinetic energy at x=0.370
*November 17, 2014 by Saya*

**Math**

Determine the linear velocity of an object with an angular velocity of 8.1 radians per second at a distance of 10 centimeters from the center. Use pi. Round the answer to the nearest tenth. I got 47, is this correct?
*November 24, 2014 by Anonymous*

**Physics**

A 4.00-g bullet is moving horizontally with a velocity vector v = 348 m/s, where the sign + indicates that it is moving to the right (see part a of the drawing). The bullet is approaching two blocks resting on a horizontal frictionless surface. Air resistance is negligible. ...
*January 12, 2015 by Anonymous*

**physics - rotational motion**

A small car of mass, m, is release at height, h, on a steel track. the car rolls down the track and through the loop of radius, R. at the end of the rack, the car rolls off the track, which is positioned at height, H, above the floor. neglect friction and the small amount of ...
*April 22, 2011 by Lauren*

**Business Law**

Juan thinks he would like to purchase Tara's house, but doesn't know whether he will be able to save enough money for a down payment on a loan. Juan agrees to give Tara $5,000 for the option to purchase her house for $150,000 sometime within the next five years. Juan and Tara ...
*February 9, 2013 by Kathleen S*

**ENGLISH Revised**

BACKGROUND: Ten years ago, I started working as a clerk for DMD Medical Supplies. Six months ago, Liz, the human resources director, promoted me to office manager. I manage two employees: Jack and Ruth. My office provides secretarial support for the four members of the ...
*March 30, 2012 by Kayla*

** improving it without changing its overall meaning**

Ever been assigned to work on a group project for class! Many students dread group projects: because one student typically does most of the work. Unfortunately for some, group work does not end when students leave school, many employers use teams to accomplish ongoing ...
*September 26, 2011 by Anna *

**Algebra**

If x1 and y1 is (2,2) and x2 and y2 is(3,2) what is the y intercept form? I'm confused on how to work the problem out step by step
*December 6, 2007 by Brooke*

**Algebra**

let do some corrctions sqrt9x+81=x+5= answer was x=35+3sqrt61/2,35-3sqrt61/2. please work with me.
*July 2, 2008 by Jack*

**algebra**

can some one help me with 2 problems thanks. y=1/2x+1,y=-3x+8, and y=1/2x+2, y=-x+5. show the work maybe i can figure it out some how.
*January 23, 2008 by dillon*

**Maths**

Thanks for the help DRWLS. I tried to work is out and came up with this working out: A(4,-2) is parallel to 2x-3y=7 y = mx + c -3y = -2x + 7 y = 2/3x - 2 1/3 (y-y*) / (x-x*) = m (y+2) / (x-4) = 2/3 y+2 = 2/3(x-4) y+2 = 2/3x - 2 2/3 y = 2/3x-2 2/3 - 2 y = 2/3x-4 2/3
*March 15, 2008 by Mel*

**Algebra 1**

quadratic equation. ax^2+bx+c=0 Solution 1,only solution. Can you help me I am struggling to work this out.
*July 3, 2008 by Cynthia*

**12th grade Math?**

How would you factor 3x^3-4x^2+4x-1? P.S. Factor theorem does not work here.
*October 12, 2008 by BioBabe*

**French 1**

I'm doing a family tree for french and I was asking if anyone could check my work. If it wouldn't be too much trouble thanks
*January 18, 2009 by Alex B.*

**Trig please help!**

sin^6 x + cos^6 x=1 - (3/4)sin^2 2x work on one side only!
*February 23, 2009 by hayden*

**trig!!**

sin^4 x (cos^2 x)=(1/16)(1-cos 2x)(1-cos4x) work one 1 side only!
*February 23, 2009 by Hayden*

**SraJMcGin are you still here**

I'll post my finished work when you answer me that you are still online
*March 29, 2009 by Destiny*

**physics**

what can be said about the speed of an object if the net work done on that object is zero?
*April 2, 2009 by kate*

**science**

i am doing a science project and i need to kno how flares work, and what the ingredients are. can someone help me?
*May 3, 2009 by logan*

**Maths**

How do i show that (a-b)^2(a+b)+ab(a+b)=a^3+b^3 I have come up with the last part ab(a+b)=a^2+b^2, but how do i work out the 1st part??
*June 19, 2009 by Scott*

**PHYSICS!!!**

If a machine cant multiply the amount of work , what is the advantage of using such a machine?
*January 24, 2010 by Carly!!!!!*

**PHYSICS!!!**

If a machine cant multiply the amount of work , what is the advantage of using such a machine?
*January 24, 2010 by Carly!!!!!*

**math**

a man carries a load of 50 kg to a height of 15 m in 5 minutes. calculate the work load?
*February 10, 2010 by binz*

**math**

Solve x^2+2x-4=0 When i try to factor this problem out I cant get it to work. Is this a no solution problem
*April 11, 2010 by jen*

**Physics**

How much work (in J) is done to accelerate a car which has a mass of 3300 kg from a speed of 7 m/s to a speed of 16 m/s?
*April 30, 2010 by Fallon*

**l2l**

If I had 10 trees and i had to plant them in 5 rows of 4 how would it work i need to do this
*June 17, 2010 by Jazz*

**Calc. Help**

Simplify. #1. 5(2-i) - 3(4+3i) ..my work: 10-5i-12-9i -2-14i Do you leave this as the answer or can you simplify it further? #2. (2-i√2)²
*August 26, 2010 by Hayden*

**physics**

a 0.180 kg ball falls 2.5m. How much work does the force of gravity do on the ball?
*November 16, 2010 by pete*

**education**

how do you implement your educational philosophy in the classroom and what educational theories would be at work.
*February 20, 2011 by pat*

**Group Behavior in Organizations**

Are group or individuals more effective in work environment?
*April 4, 2011 by Anonymous*

**Geometry**

The equation of a circle is x^2 + 6x + y^2 - 2y = 15. What are the center and radius of the circle? Please show work.
*May 3, 2011 by Anonymous*

**physics**

A system is provided 50 J of heat and work done on the system is 10 J. What is the change in internal energy
*July 5, 2011 by angel*

**physics**

It takes 5.50 J of work to stretch a spring 5.90 cm from its unstressed length. What is the spring constant k in N/m?
*September 16, 2011 by hannah*

**physics**

It takes 9.10 J of work to stretch a spring 5.10 cm from its unstressed length. What is the spring constant k in N/m?
*September 16, 2011 by hannah*

**ALGEBRA**

9/16-(-3/16) SUBTRACT SHOW ALL OF YOUR WORK SIMPLIFY tHIS IS WHAT I GOT. 9/16+3/16=12/16=3/4 IS WHT I got.
*November 10, 2011 by Angela*

**Physics**

A 0.168kg hockey puck slides at 11.4m/s. what is the work needed to stop the puck?
*February 23, 2012 by Sheetal*

**Algebra**

Find the x and y intercepts and graph the equation plotting the intercepts.Show work...-5x+8y=-40
*March 17, 2012 by sherry*

**physics**

How much work can a 22 kW car engine do in 60 seconds if It is 30% efficient It is 100% efficient
*May 8, 2012 by Melissa*

**Chemistry**

Distinguish between an absorption spectrum and an emission spectrum.with which did bohr work?
*June 8, 2012 by Yeneta*

**physics**

If an 8N force is applied to a wall for 2 minutes and the wall does not move, how much work is done?
*September 19, 2012 by anthony*

**math. solve for t**

1/1024=42*0.5^(t/12.5) Solve for t. Please show work. Much appreciated!
*October 13, 2012 by Kyle*

**ict**

answer for ict crossword home work following the same pattern
*October 23, 2012 by kay*

Pages: <<Prev | 133 | 134 | 135 | 136 | 137 | 138 | 139 | 140 | **141** | 142 | 143 | 144 | 145 | 146 | 147 | Next>>