Thursday

November 27, 2014

November 27, 2014

Total # Posts: 105

**Physics**

i think the answer would be 3827.1
*November 15, 2014*

**Physics**

A 1.50 X 10^2g piece of brass(specific heat capacity 3.80 X 10^2 J(kgC) is submerged in 400 mL of water at 27.7 Degrees Celsius. What is the original temperature of the brass if the mixture has a temperature of 28.0 degrees Celsius
*November 15, 2014*

**chemistry **

Complete the following reactions, where applicable. If no reaction occurs write N.R A) blank + blank ---> Cu(NO3)2 + PbSO4 B) C6H12O6 + O2 --> blank + blank C) AgNO3 + CuCI2 ---> blank + blank
*November 1, 2014*

**Math**

Randolph runs a home appliance repair business and charges a service call fee of $85 plus $15 per half hour for his labour. Write an equation for calculating the total charges, C, in terms of hours of labour, H. Plot the graph of C vs. H and define the slope and C-intercept of...
*October 31, 2014*

**physics**

A child pulls a wagon by the handle along a flat sidewalk. She exerts a force of 80.0 N at an angle of 30.0 above the horizontal while she moves the wagon 12 m forward. The force of friction on the wagon is 34 N. Calculate the mechanical work done by the child on the wagon ...
*October 28, 2014*

**PLEASE HELP! SCIENCE**

The system of blocks shown in the diagram below is being accelerated to the right at 4.4 m/s2 What is the applied force Small box mass- 0.10 kg Big box mass - 0.20 kg Acceleration - 4.4 m/s2 Coefficient kinetic - 0.35
*October 26, 2014*

**Physics please help!**

A sprinter starts from rest and accelerates for 5s. He then travels at a constant velocity for 10s. Finally he slows down to a stop in 5s. Draw a d-t graph to represent his motion. Then draw the corresponding v-t and a-t graphs
*September 17, 2014*

**Organic biochemistry**

How to draw the skeleton structure for diethylammonium bromide?
*July 2, 2014*

**Probability**

Calculate the (modeled) probability P(E) using the given information, assuming that all outcomes are equally likely. n(S) =8, n(E) =4
*June 22, 2014*

**Frequency**

Calculate the relative frequency P(E) using the given information. 400 adults are polled and 320 of them support universal health care coverage. E is the event that an adult does not support universal health coverage. P(E)=?
*June 22, 2014*

**Probability**

Four coins are tossed. What is the probability of getting more tails than heads and getting at least two heads?
*June 22, 2014*

**Probability**

If the events A and B are disjoint, A Intersection B =0, P(B) = 0.17 and P(A U B)=0.55. Find P(A)
*June 22, 2014*

**Probability**

How many unordered sets are possible that contain four objects chosen from thirteen?
*June 22, 2014*

**Compute**

Compute the indicated quantity P(A probability B) = .1, P(B) = .5. Find P(A interception B).
*June 22, 2014*

**Probability**

How many ordered lists are possible that contain five objects chosen from seven?
*June 22, 2014*

**Probability**

Consider D ={red, blue, green} and F = {ball, car} find DXF
*June 22, 2014*

**Probability**

I P(B) = 0.4, find P(B')
*June 22, 2014*

**Probability**

Let A and B be two events with P(A interception B)= 0.2, P(B) =0.15, and P(A U B)= 0.75. Find P(A)
*June 22, 2014*

**Probability**

Four Coins are tossed. Describe the sample space S, probability of getting more tails than heads and probability of getting at least two heads.
*June 22, 2014*

**financial**

710.78 to the nearest cent: 710.79 either one will be correct.
*June 14, 2014*

**financial **

If I want my rent in 4yrs to be 900dllrs. The owner of the apartment building told me that the rent will increase 3% every year compounded every year. What should be my rent today?
*June 14, 2014*

**future value for simple interest**

2 years
*June 14, 2014*

**future value for simple interest**

a 5000 loan, taken now with a simple interest rate of 4% per year, will require a total repayment of 5400dllrs. After how many years t will the loan mature?
*June 14, 2014*

**financial**

40 annual interest rate
*June 14, 2014*

**financial**

an investment of 3000 will pay a total of 600dllrs simple interest after 5yrs. what is its annual interest rate?
*June 14, 2014*

**history help plzzzzzz**

katt * i like zack a lot* its 8th grade
*January 29, 2014*

**biology**

In a population with two alleles, B and b, and the allele frequency of b is 0.4. Calculate the allele frequency of heterozygotes if the population is in Hardy–Weinberg equilibrium? Show your work. Thanks for any help in advance!
*August 1, 2013*

**College Algebra HELP**

Use the seven step method described in the book to graph the following rational function f(x)=(2x^2+x-3)/(2x^2-7x) 1) Determine the symmetry of the function 2) Find the y-intercept 3) Find the x-intercept 4) Find the vertical asymptotes 5) Find the horizontal asymptotes 6) ...
*May 15, 2013*

**Seven step method**

Use the seven step method described in the book to graph the following rational function f(x)=(2x^2+x-3)/(2x^2-7x) 1) Determine the symmetry of the function 2) Find the y-intercept 3) Find the x-intercept 4) Find the vertical asymptotes 5) Find the horizontal asymptotes 6) ...
*May 15, 2013*

**College Algebra! help!**

Consider the following functions f(x)= (7x+8)/(x+3) and g(x)= (3x-8)/(7-x) (a) Find g(g(x)) (b) Find g(f(x)) (c) Determine whether the functions f and g are inverses of each other.
*May 14, 2013*

**physics**

A wagon is being pushed by a small child along a sidewalk. If the wagon has a mass of 8kg, a coefficient of friction of 0.3 and is accelerating at 0.2m/s what force is the child applying
*April 15, 2013*

**math**

helow answer. show work how to figure out the below (1.2)square root + (2.8) sq. root = 3.1
*April 11, 2013*

**Calculus**

An object at rest begins moving horizontally on the x-axis, starting at position x(t) = 0 feet at time t = 0 seconds.Suppose, after exactly 2 seconds we measure the position of the object to be 3 feet to the right of the origin AND measure the object to be moving to the ...
*April 11, 2013*

**Big MATH Help needed**

An object at rest begins moving horizontally on the x-axis, starting at position x(t) = 0 feet at time t = 0 seconds.Suppose, after exactly 2 seconds we measure the position of the object to be 3 feet to the right of the origin AND measure the object to be moving to the ...
*April 8, 2013*

**Math**

There are 24 hours in each day.there are 7 days in one week how many hours are there in a week?
*February 24, 2013*

**Math**

What is a 2 digit number 19 is a factor and the sum of its digits is 12
*September 12, 2012*

**Math**

2 part question 1) a cone shaped paper cup has a height of 7 inches and a diameter of 5 inches. What is the volume of the cone? Round answer to the nearest hundredth. 2) if we collect rainwater in the cup in question 1 until the waters depth is 6 inches, what percentage of the...
*May 22, 2012*

**Math**

A company charges $42 per cubic yard of concrete. How much will it cost to pour a sidewalk that is 45 inches wide, 70 feet long, and 4 inches deep?
*May 22, 2012*

**English**

Ok thanks
*May 2, 2012*

**English**

What is the verb or the verb phrase in the sentence though?
*May 2, 2012*

**English**

What is the verb or verb phrase in the sentence: Her mother, Naomi, is a tax attorney with her own business.
*May 2, 2012*

**math**

Joe needed two boards measuring 1 foot 9 inches and 3 feet 5 inches to complete his project. He wanted to find a total of the amount of wood he would need to buy? How would I simplify this?
*February 22, 2012*

**Physics**

A skater of mass 60 kg takes a 20 m radius turn at 12 m/s. Find the skater's angle of lean (between body and vertical)
*January 6, 2012*

**Physics**

A man pushes a 50N box across a level floor at a constant speed of 2.0 m/s for 10 s. Whats the average power output by the man.
*December 8, 2011*

**physics**

A 15kg object is pushed to the right with a net force of 60N. If a 5kg object experiences the same acceleration, how much force is it being pushed with.
*December 8, 2011*

**math**

it depends on how many people are shaking thier hands
*December 5, 2011*

**physics**

a penny dropped from the Empire state building. how far does the penny drop in 6 seconds? how fast will it be moving after 10 seconds?
*October 6, 2011*

**physics**

A net force gives a 10th kg object an acceleration of 2.0m/s . If the same force were applied to a 20 kg object what would its acceleration be?
*July 14, 2011*

**english **

help i need to know if this sentence is parallel Neither the searing pain in my toe nor the blinding rain in my face will keep me from finishing the race.
*July 1, 2011*

**physics**

PE= 294 work done= 294 power= 29.4
*June 30, 2011*

**physics**

An initially stationary 15.0-kg crate of cheese wheels is pulled via a cable a distance d= 5.70m up a frictionless ramp to a height of h= 2.50m, where it stops. What is the potential energy of the crate after it is lifted? How much work is done during the lift? If it takes 10 ...
*June 30, 2011*

**physics**

ke=1/2*2000kg*50 ke=50000
*June 30, 2011*

**physics**

A 2000 kg car is moving with a velocity of 50 km/hr. What is its kinetic energy? If the car reduces its speed by half, by what factor is the kinetic energy changed?
*June 30, 2011*

**math**

total amount for home= $287,533.41 total interest= $167,533.41 amount of first payment applied to princible is= $148.06
*June 29, 2011*

**Physical science**

A projectile spends 20 seconds in the air. It reaches a peak height of 8 meters. How long does it take to reach it's peak height? The projectile has a range of 80 meters. What is it's horizontal velocity?
*June 21, 2011*

**Physical science**

A projectile spends a total of 20 seconds in the air. It reaches a peak height of 8 meters. How long does it take to reach it's peak height
*June 21, 2011*

**physical science**

What are the distance and displacement of a race car that completes the Indy 500
*June 15, 2011*

**art history**

Compare and contrast the art and sculpture of Meso-America and Africa. In your discussion, include the purposes for this art and sculpture.
*May 27, 2011*

**teacher aide**

So it would have to be b then?
*May 17, 2011*

**teacher aide**

I read it still can't figure this one at.
*May 17, 2011*

**teacher aide**

In the classroom, the reverse mainstreaming/inclusion technique is used A only with mildly retarded students B more often than the resource room for behavior disordered students C to place special needs students in the majority D effectively to teach math and reading I think ...
*May 17, 2011*

**teacher aide**

Public law 94-142 mandates that A schools must transport students to special sites for education B only certain states must provide special education programs C parents may not participate in a special needs child's education D every special needs child have an IEP that ...
*May 16, 2011*

**Teacher**

I'm having problems with this question. In a regular school, the mainstreaming\inclusion technique is A used only with visually impaired students B often impossible with behavior disordered students C frequently a positive experience for regular students D impractical for ...
*May 12, 2011*

**chemistry**

How do I prepare 2 L 0.1 M Hydrochloric acid from 6 M HCl ? Also how do I prepare .05 M NaOH solution from pellets? Thanks
*May 4, 2011*

**teacher aide**

I need help! What information is included in the instructional guide that accompanies most audiovisual materials? A How to operate the projection equipment to show the materials B How to duplicate the audiovisual materials C A summary of description of the contents D A ...
*April 26, 2011*

**Instructional Materials: their preparation and use**

Please help! If you want to project a microscope slide onto a screen, which machine would you use? A opaque projector B copy machine C bioscope D slide projector I think the answer is D I'm I right.
*April 26, 2011*

**Math (please please please help!)**

Solve for x: 2 to x+1=x+2 to 3 or 2 to x+3= x+2 to x+5 (the proportions end up being the same in the end) I keep getting to the part after you FOIL, and then I get stuck
*April 5, 2011*

**math**

Name the shape. Plane shapes. It does not have 4 sides. all of it sides are equal. All of its angles are acute.
*March 22, 2011*

**Second Grade Fractions**

Thank you.
*March 17, 2011*

**Second Grade Fractions**

4/6 of 18 is ?
*March 17, 2011*

**math**

If x+y=-10 and x-y=2, what is that value of x?
*March 15, 2011*

**Physics**

Two dogs are pulling on opposite ends of a bone. One dog pulls to the right with a force of 50N while the other pulls to the left with a force of 40N. Are the forces balanced or unbalanced? How do you know? What is the net force on the bone? Would the bone's velocity ...
*March 7, 2011*

**science**

minerals used by animals for bones
*March 2, 2011*

**calculus**

Given f(x) = x3, evaluate lim h->o f(a+h)-f(a)/h
*February 24, 2011*

**calculus**

Sketch the graph of F(x).
*February 24, 2011*

**calculus**

A state charges polluters an annual fee of $20 per ton for each ton of pollutant emitted into the atmosphere, up to a maximum of 4,000 tons. No fees are charged for emissions beyond the 4,000-ton limit. Write a piecewise de nition of the fees F(x) charged for the emission of x...
*February 24, 2011*

**calculus**

The fee per ton of pollution is given by A(x) = F(x)=x. Write a piecewise de nition of A(x). What is the limit of A(x) as x approaches 4,000 tons? As x approaches 8,000 tons?
*February 24, 2011*

**Algebra **

How do you solve this kind of problem?
*February 13, 2011*

**Math**

Thank you, I got it now :)
*January 24, 2011*

**Math**

The point (-1, -1) is in quadrant IV. How to determine if this is true or false?
*January 24, 2011*

**physics**

A 59 kg diver stands at the end of a 32 kg springboard, the spring board is 3 m long. The board is attached to a hinge at the left end, but simply rests on the right support which is half way along the board. What is the magnitude of the vertical force exerted by the hinge on ...
*December 9, 2010*

**physics**

Jason takes off across level water on his jet-powered skis. The combined mass of Jason and skis is 75 kg (the mass of the fuel is negligible). The skis have a thrust of 200 N and a coefficient of kinetic friction on water of 0.1. Unfortunately, the skis run out of fuel after ...
*December 9, 2010*

**physics**

A block slides down a frictionless ramp. If the ramp angle is 22 degrees and the length of it is 25m. find the speed of the block as it reaches the end of the ramp, assuming it started sliding from rest at the top.
*December 9, 2010*

**College Chemistry**

Indicate the number of unpaired electrons present in Kr Atom...?
*November 19, 2010*

**general chemistry**

thank you very much for your help!
*October 17, 2010*

**general chemistry**

A student needs to determine by titration with NaOH the precise %KHP in an unknown sample that is thought to contain approximately 50%KHP. Approximately what mass of sample should the student use in order to use about 20mL of 0.1005 M NaOH to reach the endpoint of the ...
*October 17, 2010*

**Algebra 1**

s(x)=1/5x^2 Can anyone help me find the vertex of this equation and the line of symmetry I tried to do it but am finding in difficult. Thanks.
*August 30, 2010*

**statistics t test**

If a population proportion is 0.29 and if the sample size is 120, 25% of the time the sample proportion will be less than what value if you are taking random samples? Round your answer to 2 decimal places, the tolerance is +/-0.01.
*July 18, 2010*

**us history**

what question was resolved with the great compromise?
*May 4, 2010*

**Geometry-confused!**

Find the length of a side of a rhombus whose diagonals measure 10 and 24?
*May 3, 2010*

**math (find my grade)**

10%=test 20%=in class work 30%=homework 40%=quiz
*April 18, 2010*

**math (find my grade)**

1%= TEST 2%=IN CLASS WORK 3%=HOMEWORK 4%=QUIZ AND THE GRADES UNDER EACH ONE ARE MY GRADES!!!!!!!!!!
*April 18, 2010*

**math (find my grade)**

there is now 76%. THE 76% IS A GRADE.
*April 18, 2010*

**math (find my grade)**

1% of my grade 82% 4% of my grade 76% 2% of my grade 100% 100% 100% 100% 100% 100% 100% 100% 82% could you please find my average. thank you!!!!
*April 18, 2010*

**chemistry**

the number of moles of oxygen gas needed to react with 4.0 moles mg is
*March 3, 2010*

**geography**

WHICH ONE ARE THE CONTINENT WITH MOST POPULATION AND WHIC ONE ARE THE ONE WITH LEAST POPULATION
*October 15, 2009*

**Math Fractions**

How do you solve this and problems like it: 3/4 of _____ is 90 5/6 of 120 is ______
*March 19, 2009*

**history**

Is there a form that is used for current events for 7th grade students?
*September 7, 2008*

**physics**

a metal spoon is placed in one of two indentical cups of hot coffee. Which cup will be cooler after a few minutes?
*January 24, 2008*

**physics**

How does air within winter clothing keep you warm on cold winter days?
*January 24, 2008*