Wednesday

April 23, 2014

April 23, 2014

Total # Posts: 68,347

**physics**

If a ball is dropped from rest, it will fall 5 m during the first second. How far will it fall during the second second? A. 15 meters B. 10 meters C. 5 meters D. 20 meters the way the question is worded it seems it should be 10meteres but I think it wants total so would it be ...

**physics**

Which of the following could be considered to be an 'accelerator' in an automobile? A. brake pedal B. gas pedal (choose this one but says wrong) C. steering wheel D. All of these can cause the car to accelerate.

**probability**

???

**L.A.**

Has anyone here read A Retrieved Reformation? I have to write a dramatic scene about a conflict in that story. What conflicts can I use?

**Physics**

A group of swimmers is resting in the sun on an off shore raft. They estimate that 2.9 meters separates a trough and an adjacent crest of surface waves on the lake. In addition, they count 12 crests that pass by the raft in 16 seconds. What is the Period of these waves?

**Physics**

A hiker shouts towards a vertical cliff 305 meters away. The echo is heard 1.85 seconds later. How fast did the sound wave travel in air?

**physics**

A father (m= 90 kg) and son (m= 45 kg) are standing facing each other on a frozen pond. The son pushes on the father and finds himself moving backward at 3 after they have separated. How fast is the father moving?

**physics**

A friend is making an iMovie and wants your help designing a skateboard stunt. You estimate that your friend�s mass is four times greater than that of the skateboard. For the following questions, ignore friction. In one scenario, your friend starts by standing at rest o...

**physics**

Two air-track gliders are held together with a string. The mass of glider A is twice that of glider B. A spring is tightly compressed between the gliders. The gliders are initially at rest and the spring is released by burning the string. If glider B has a speed of 3 m/s after...

**physics**

A tennis ball (m= 0.2 kg) is thrown at a brick wall. It is traveling horizontally at 16 just before hitting the wall and rebounds from the wall at 8 , still traveling horizontally. The ball is in contact with the wall for 0.04 s. What is the magnitude of the average force of ...

**physics**

A 600-kg geosynchronous satellite has an orbital radius of 6.6 Earth radii. What gravitational force does Earth exert on the satellite? A. 13.8 N B. 90.9 N C. 138 N D. 909 N

**physics**

A solid lead sphere of radius 10 m (about 66 ft across!) has a mass of about 57 million kg. If two of these spheres are floating in deep space with their centers 20 m apart, the gravitational attraction between the spheres is only 540 N (about 120 lb). How large would this gr...

**physics**

An ashtray slides across a table with a speed of 0.9 and falls off the edge. If it takes 0.4 s to reach the floor, how far from the edge of the table does the ashtray land?

**physics**

What is the change in velocity if a car traveling 30{m}/{s} north slows to 20{m}/{s} north? A. 20{m}/{s} north B. 10{m}/{s} north C. 30{m}/{s} south D. 10 {m}/{s} south

**physics 1**

A 64.4-kg skateboarder starts out with a speed of 1.95 m/s. He does 119 J of work on himself by pushing with his feet against the ground. In addition, friction does -260 J of work on him. In both cases, the forces doing the work are non-conservative. The final speed of the ska...

**physics 1**

The model airplane in Figure 5.6 is flying at a speed of 13.6 m/s on a horizontal circle of radius 19.1 m. The mass of the plane is 1.20 kg. The person holding the guideline pulls it in until the radius of the circle becomes 10.6 m. The plane speeds up, and the tension in the ...

**physics**

A sled is being pulled across a horizontal patch of snow. Friction is negligible. The pulling force points in the same direction as the sled's displacement, which is along the +x axis. As a result, the kinetic energy of the sled increases by 47.5 percent. By what percentag...

**Help**

i'm sorry for not typing my answers first.

**Help**

Thank you very much.

**Help**

Oh. uh.. #1, A or c. but i'd go with A #2,B

**Help**

What is an example of bias in media? a website that presents a controversial opinion as though it were fact a television news program that presents both sides of a particular issue a podcast expressing an author’s opinion a blog about the history of the Civil War Why is m...

**physics**

A pole-vaulter just clears the bar at 4.07 m and falls back to the ground. The change in the vaulter's potential energy during the fall is -3900 J. What is his weight?

**Science :(**

Which of the following describes the correct sequence of events during the water cycle? precipitation → condensation → evaporation → runoff condensation → precipitation → runoff → evaporation runoff → condensation → evaporation &...

**:(**

pllzzz help

**math. plzz help**

calculate the slant height for the given square pyramid. Round to the nearest tenth. Pyramid base= 6cm height=5 cm 6.2 cm 5.8 cm 7.8 cm 7.2 cm Calculate the length of the diagonal for the given rectangular prism. Round to the nearest tenth. Length= 10 cm widith= 4cm height= 10...

**math**

if venom A is three times as potent as venom B and venom C is 2.2 times as potent as venom B. how much more potent is venom C compared to venom A?

**math**

if four out every seven individuals in a population of armadillos carry a gene for a defective enzyme, how many individuals carry the normal gene in a population of 869 armadillos?

**Algebra 1 Answer Check**

Factor this trinomial. -16x + 20x + 6 A: -2(4x + 1)(2x - 3)

**Algebra 1 Answer Check**

Factor this trinomial. 9x^2 - x + 2 A: (3x + 2)(x - 1)

**math**

Factor. 18x^3+24x^2-45x

**algebra**

If you multiply a number by six and then subtract negative ten, the difference is negative twenty. What is the number?

**Math (check answers)**

C.multiply

**Physics**

How many watts of power do you expend when you exert a force of 0.50N that moves a book 2.1m in a time interval of 1.1s ? Express your answer to two significant figures and include the appropriate units.

**Physics**

What is his kinetic energy when his potential energy reduces to 1000 J? Express your answer to two significant figures and include the appropriate units

**Physics**

What change in kinetic energy does an airplane experience on takeoff if it is moved a distance of 480m by a sustained net force of 5400N ? Express your answer to two significant figures and include the appropriate units.

**Physics!**

How many joules of potential energy does a 1.2-kg book gain when it is elevated 4.0 ? Express your answer to two significant figures and include the appropriate units.

**Physics!**

Calculate the watts of power expended when a force of 2.0N moves a book 2.4m in a time interval of 1.0 s. Express your answer to two significant figures and include the appropriate units.

**Physics**

the work done in lifting a 600-N barbell 1.6m above the floor. What is the gain of potential energy of the barbell when it is lifted to this height? Express your answer to two significant figures and include the appropriate units.

**Physics**

Calculate the work done in lifting a 600-N barbell 1.6m above the floor. Express your answer to two significant figures and include the appropriate units.

**Math**

2x^10 - 6x^10 = ? Is this -4x^10?

**Algebra 1 (Step-by-Step) **

Factor this trinomial. -4x^2 - 8x + 5

**fractions **

12 dogs were in the park.2 of them were Dalmatians.what fraction of the dogs were Dalmatians

**math**

Calculate the slant height for the given cone. Round to the nearest tenth. Diameter = 8cm height = 9 cm 10.2 cm 11.4 cm 9.8 cm 12.0 cm

**physics**

A spring can store 25 J of energy when compressed by 0.13 m. What is the spring constant of the spring? Use SI units in your answer. k =

**Math 2 questions**

1.5.652 rounded to the nearest tenth. 2. The two triangles below are similar. Find the value of x. triangle 1: base: 4 height: 10 triangle 2: base: x height: 20 what would X be? my guess 8.

**Physics**

The electric field on the axis of a uniformly charged ring has magnitude 370kN/C at a point 6.2cm from the ring center. The magnitude 17cm from the center is 150kN/C ; in both cases the field points away from the ring.Find the ring's radius.

**Math help plz check my answers!**

Ooooohhhh. Thanks alot.

**Math help plz check my answers!**

nah. I think B.

**Math help plz check my answers!**

is it A?

**Math help plz check my answers!**

Name the quadrilaterals that have four equal sides. rhombus, square square, rectangle parallelogram, rhombus rhombus, trapezoid*** is this right?

**Math help plz check my answers!**

Lol thanks!! :-)

**Math help plz check my answers!**

11. Name the triangles that are classified by sides. right, scalene, isosceles scalene, isosceles, equilateral*** acute, right, obtuse obtuse, isosceles, acute

**Algebra 1 Answer Check**

Factor each trinomial. 1. -2x^2 + 5x + 12 A: -1(2x + 3)(x - 4) 2. 4a^2 + 8a - 5 A: (2a -1)(2a + 5) 3. -4x^2 - 8x + 5 A: -1(2x - 1)(2x + 5) 4. -5x^2 + 7x + 6 A: -1(5x + 3)(x - 2)

**math**

47. (-3,0),(1,4),(-1,6),(2,0) can some help me graph this

**English**

Leonardo da Vinci believed in soper vedere, or the power of observation. While his contemporaries looked for scientific truth in the writings of ancient scholars, da Vinci's theories were based on empirical research, that which he observed and recorded in his many notebook...

**Chemistry**

Predict the standard cell potential and calculate the standard reaction Gibbs free energy for galvanic cells having the following cell reactions: 2H2+O2=2H2O in acidic solution 2H2+O2=2H2O in basic solution I understand the idea behind the problem, but I am not sure how the ac...

**US History**

What is the second great awakeing?

**English**

I am assuming the rest of the answers to the questions were correct.

**English**

Choose the best answer 1. What do you get if you mix common bacteria and vinegar. The word common means a. multiple b. ordinary - the answer c. lower-class d. poisonous 2. It is a serious question. The answer is you get bacteria that eat toxic waste and turn that waste into sa...

**Algebra**

When I factor an expression completely, I get 6(v^2 + 9)(3v - 5). Is it possible to write this as 6(v + 3)(v + 3)(3v - 5)?

**algebra 1**

Divide the following radical and simplify the answer. 2003-04-05-00-00_files/i0160000.jpg

**programming**

Write an algorithm to compute average score for each student in the Computer Science Continuous assessment test. Assume each student sat for ten courses for the semester

**statistics**

1. A company decides to add a new program that prepares randomly selected sales personnel to increase their number of sales per month. The mean number of sales per month for the overall population of sales people at this national company is 25 with a standard deviation of 4. T...

**math**

1200

**physics**

A piece of metal has a mass of 85cg and a volume of 450L. What is its density in g/cm3? What would be the mass of 300 cm3 of this metal? What would be the volume of 00 ounces of this metal?

**chemistry**

what is the latent heat of silver metal if 55.0 grams of metal liquefies with 47.3J of heat added?

**Biology**

yujuyjy

**SCIENCE CAN ANYONE HELP**

A.) Show how vertical multiplication can be used to do a charge balance if Zn2+ combines with Cl- b.) Write the chemical formula name for the compound that would be formed I've been waiting for hours and I haven't even received any help...

**Science urgent **

A.) Show how vertical multiplication can be used to do a charge balance if Zn2+ combines with Cl- b.) Write the chemical formula name for the compound that would be formed

**Sensor Networks**

also I want to know the answer

**trig**

three forces

**chem**

f the synthesis of 1.00 mol of ATP from adenosine diphosphate (ADP) requires a ΔG of 37.7 kJ, how many moles of ATP are synthesized per mole of O2?

**math**

what is the equation in point-slope form for the line parallel to y=-2x+10 that contains j(6,8)?

**chemistry**

The equilibrium constant, Kp, for the following reaction is 2.74 at 1150 K. Calculate Kc for this reaction at this temperature. 2SO3(g) 2SO2(g) + O2(g)

**1 question!**

What are some examples of musculoskeletal disorders? headaches and seizures eyestrain, blurred vision, and dizziness low back pain, joint injuries, and repetitive strain injuries insomnia and anxiety

**Anatomy and Physiology**

I read it but didn't understand

**Anatomy and Physiology**

I am going with B

**Anatomy and Physiology**

What should the patient with recurrent urinary tract infections be instructed? A. Avoid eating undercooked meat. B. Prepare for a kidney transplant. C. Drink plenty of water. D. Expect treatment with kidney dialysis.

**introduction to catering**

which is the most important prerequisite for making your catering business successful

**psychology**

An experimenter wants to find out if drinking coffee makes people more alert. The amount of coffee a person drinks is the: A. hypothesis. B. dependent variable. C. independent variable. D. correlation coefficient.

**Trigonometry**

How do you evaluate: 3cos^2â - 3sin^2â ?

**math**

An item with a trade discount of 41% has a list price of $289.50. What is the net price?

**math**

b. What is the net price of the order?

**math**

On August 18, Sullivan Company received an invoice in the amount of $6,700, having terms of sale of 4/15 EOM. What is the discount date?

**math**

Ace Formalwear buys tuxedos from a supplier and has an invoice amount of $27,700. The terms of the sale are 3/20, n/30. If Ace sends a partial payment of $7,400 on the discount date, what is the net amount still due?

**math**

Diane's Pottery Shop orders china from a supplier for $240 including $30 freight charges. The terms of sale are 3/10, n/30 ROG. The china arrives on 11/21 and Diane wants to take advantage of the cash discount. As the bookkeeper for Diane's how much will you send the s...

**math**

Solve for the base, rounding answer to hundredths if necessary: 76 is .2% of ______.

**math**

What will be the total deduction for social security and Medicare taxes on Juanita's next weekly paycheck of $720 if she has already earned $10,800 this year? Social security tax is 6.2% of wages up to $106,800. Medicare tax is 1.45% of all wages.

**math**

Mary Jo Prenaris is an office manager with gross earnings of $1,600 semimonthly. If her company switches pay schedules from semimonthly to biweekly, what are Mary Jo's new gross earnings?

**math**

Compute Mike's estimated tax payment for the fourth quarter. He is self-employed and he expects to earn $20,640 this year. His estimated income tax rate is 18%. For self-employed persons, social security tax is 12.4% of wages up to $106,800, and Medicare tax is 2.9% of all...

**math**

Jerry King is a server in a restaurant that pays a salary of $22 per day. He also averages tips of 18% of his total gross food orders. Last week he worked 6 days and had total food orders of $2,766.50. What was his total gross pay for the week?

**math**

Thomas Rendell's company pays him a straight 6% commission with a $1,350 drawing account each month. If his sales last month totaled $152,480, how much commission is owed to Thomas?

**math**

Pamela Mello is paid on an incremental commission schedule. She is paid 2.6% on the first $60,000 and 3.4% on any sales over $60,000. If her weekly sales volume was $89,400, what was her total commission?

**math**

Paul Curcio earns $8.25 per hour for regular time up to 40 hours, time-and-a-half for overtime, and double time for the midnight shift. Last week Paul worked 58 hours, including 6 on the midnight shift. What are his gross earnings?

**math**

Jennifer Brunner works 40 hours per week as a chef's assistant. At the rate of $7.60 per hour, what are her gross weekly earnings?

**Careers**

What exactly is a translation career? I know it has something to do with learning many languages.

**chemistry **

A student stated that the solubility of KCl at 20 degrees Celsius was 36 grams of KCl per 100 grams of solution. What is wrong with this statement?

**chemistry **

A student stated that the solubility of KCL, at 20 degrees Celsius was 36 grams of KCL per 100 grams of solution. What is wrong with this statement?

**science**

Thank you for your help and time.

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