Thursday
April 24, 2014

Posts by Brooke


Total # Posts: 540

physics
An 85 kg football player traveling 4.7 m/s is stopped in 1.0 s by a tackler. What is the original kinetic energy of the player? (I tried using 1/2 m v^2 but that doesn't seem to be right. How do I manipulate the formula?) What average power is required to stop him?

Social Studies
yes

Chemisty
Write all possible quilibrium equations for KHP dissovled in water and then write the quilibrium constanst expressions for the equation.

Psysics (Magnetism)
A current-carrying wire is placed in a uniform magnetic field, but there is no magnetic force on it. How is this possible?

physics
An alpha particle (charge = +2.0e) is sent at high speed toward a gold nucleus (charge = +79e). What is the electric force acting on the alpha particle when the alpha particle is 1.7 multiplied by 10-14 m from the gold nucleus? N

physics
At the point of fission, a nucleus of 235U that has 92 protons is divided into two smaller spheres, each of which has 46 protons and a radius of 5.08 multiplied by 10-15 m. What is the magnitude of the repulsive force pushing these two spheres apart?

physics
Calculate the net charge on a substance consisting of a combination of 4.3 multiplied by 1013 protons and 2.5 multiplied by 1013 electrons.

US History
Got a question: On our class we have to write a research paper tracing the historical causation of a current event and the current event has to be with in a year! Can someone help me with suggestions?

chem pH
calculate the pH when 10 mL of .511 M sodium acetate and 20.00 mL of 0.350 M acetic acid

chem
calculate the pH of 0.25 M formic acid and 0.40 M sodium formate

chem
calculate the solubility of barium sulfate (Ksp=1.1x10^-10) in a) water b) a 0.10 M barium chloride solution help is GREATLY appreciated

Chemistry
Calculate the pH of an aqueous solution containing 3.8 10-2 M HCl, 1.0 10-2 M H2SO4, and 3.3 10-2 M HCN.

Chemistry
A 0.25 g sample of lime (CaO) is dissolved in enough water to make 1487 mL of solution. Calculate the pH of the solution

history
C) fought in a traditional manner

Culinary arts
What does the term coving mean?

Math
(-3x^-2)^-3 How would I solve this problem?

Biology
In an experiment designed to measure the distance a golf ball is hit by clubs made of different material, a standardized variable would be: A The distance the golf ball traveled B The type of material the club is made of C The material the golf ball was made of D The wind dire...

Biology
The "Kingdom" is the most all inclusive taxonomic category True or False. I think it is true but not sure

Physics
The first one I believe is right except for the units. Since 2 ft/sec is just rule of thumb, it wouldn't count towards the change. That's just the information given so that 2ft/sec = 1 mile. If you have 145 miles, for every mile you're going 2 ft/sec. So you would ...

Physics
If you divide 765600 by 2 ft/sec you're going to still have a huge number. I don't think that's right somehow. I'm going to get a teacher's help today.

Physics
My computer is really slow and I've only been able to get it to work once...

Physics
I too am in VASTS... that's what I thought. The units would have to be converted first to feet to get an answer in ft/sec.

Physical Science
Thanks

Physical Science
Water boils at _______ 01 Kelvin. I put 373.15 but I dont know if it is right. Could someone please help me?

US GOV
Which of the following statements concerning the Twenty-fifth Amendment is incorrect? a. It allows the vice president to serve as acting president in the case of presidential disability. b. It allows the vice president alone to declare the president disabled. c. It requires th...

US Gov
The greatest source of presidential power is: a. the power to remove members of Congress from office for violating their oath of office. b. the power of referendum. c. politics and public opinion. d. the threat of a veto. e. the power to make political appointments. I am leani...

physics
To find Work Use the Work = Pressure * delta Volume Be sure everything is in SI units 1atm=1.013*10^5 1cm^3=1*10^-5m^3 I have no idea how to find the change in internal energy though sorry

Question (PLEASE READ!!!)
chacha OR wikianswers

physics
You can use the equation (d=Vit + 1/2 a t^2) So for the first one it would be: d= (0)(1) + 1/2 (1.5) (1^2) And the answer would be .75m Each time just plug in the time to 't' and keep all the other information the same.

Physics
A 15 kg model airplane flies horizontally at point A that is 20 m about point B. It has a speed of 19.993 m/s at point A. It then flies horizontally at point B. If the loss of potential energy is reflected as an increase in kinetic energy, what is the speed of the model airpla...

Physics
In an electronics factory, small cabinets slide down a 30 degree incline a distance of 16 m along the incline to the next assembly stage. The cabinets have a mass of 10 kg each. Calculate the speed each cabinet would acquire if the incline were frictionless. What kinetic energ...

Physics
A 1.5 N force acts on a .20 kg cart so as to accelerate it along a frictionless track. If it is accelerated from rest, how fast is it going after .3m? The answer given is 2.12 m/s but I am not sure how to get to that.

Physics
A .5 kg block is sliding along a tabletop with an initial velocity of .20 m/s. It slides to rest in a distance of .7m. Find the frictional force regarding it motion. The answer given is .0143 N but I do not understand how to get that.

Social Studies
Thanks ! Both of your responces helped answer my question ! :)

Social Studies
The question is "Evaluate the effectiveness of this action" The action was the government appologizing for Chinese Head Tax. Not only did the gov't appologize , it also gave symbloic payments to those affected by the head tax. Then it says "does it consider ...

Social Studies
I was kind of leaning towards that too ! thanks ! :)

Social Studies
Here is the question .. How did the Enlightenment contribute to the Industrial Revolution? A) People used technology to create greater prosperity for all. B) Reasoning was used to solve human problems. C) Electricity used in the production of material goods. D) People came to ...

Social Studies
Thanks !

Social Studies
Im working on a review booklet for Social Studies and theres a couple questions Im having problems with, my test is tomorrow so I don't have time to ask my teacher , hope you can help ! :) First Question: "The scramble for Africa" began in the late 1800s when alm...

physics
Suppose the ball is kicked horizontally with an initial speed of 9.37m/s. If the ball travels a horizontal distance of distnace 85 meters, how tall is the mountain?

physics
Assume the driver has a mass of 70.6 kg . What horizontal force does the seat exert on the driver? Answer in units of N

Physics
A 1000 kg car rolling on a horizontal surface has speed v = 55 km/h when it strikes a horizontal coiled spring and is brought to rest in a distance of 2.2 m. What is the spring stiffness constant of the spring?

Physics
Jane, looking for Tarzan, is running at top speed (6.2 m/s) and grabs a vine hanging vertically from a tall tree in the jungle. How high can she swing upward?

Physical Science
Under what circumstances would you expect the shared electron pair to be equal distances on the average from each of the atoms participating in a covalent bond?

Physical Science
What kind(s) of particles make up (a) gaseous compound (b) liquid compound (c) solid compound?

Physical Science
What is an example of radioactive decay?

American Gov
The most important source of political values in the United States is probably what? Mass Media Family Religion School Local Newspaper

algebra
use this inequality -4t - 8 less than or equal to 12 to fill in the missing number, t+4 greater than or equal to ___?

US Gov
I think it is B but I am not sure!

US Gov
The reason a statement specific to state powers was not part of the original U.S. Constitution was that: a. New York delegates refused to allow discussion on the matter. b. it was assumed to be obvious. c. it was deleted under the Virginia Plan. d. no such consensus existed at...

MATH QUIZ
Round each number to the underlined place value. 1.) 15.6571 -->5 is underlined 2.) 0.8914 -->1 is underlined 3.) 7,022.56 -->3 is underlined 4.) 345.678 -->6 is underlined Estimate. 5.) 3.7 · 8.06 about 32 about 27 about 12 about 24 6.) 17.25 + 6.66 about 9...

MATH QUIZ
Round each number to the underlined place value. 1. 15.6571 --> the underlined word is 5 2.

Physical Science
Alpha particle tracks through gases and thin metal foils show few deflections. What does this tell us about the atom??

math
Make a tally chart for the number of students in the third-fourth-and fifth grade classes: 26,25,27,27,26,28,27 I don't understand how to find the answer.

physics
A plane is traveling at 300 m/s drops a bomb which hits it target 10 sec later. How high was the plane flying?

math
Assume that both Jane and Kathy start with 0 marbles. If Jane wins the first 15 games in a row, she will now have 15 marbles, and Kathy will have -15 marbles. This is because for ever game Jane wins, Kathy needs to hand over a marble. Jane cannot win anymore games. The goal no...

pe
what are the six common managerial functions that should be performed by a sports manager

Math
“How much does one cost?” asked the man.“50 cents” replied the hardware clerk“and how much does 18 cost?” the customer asked.“One dollar” said the clerk “Ok I’ll take seven hundred six” the man said “That will be $1.5...

physics
I place a single negative charge in a region where there is a constant electric field pointed toward the floor. The charge feels a force where?

How to Start your own day care facility
THe first step to planning a child care center is to what?

Chemistry
If it were determined that there were 6.391 x 10^22 atoms of H in an unknown sample of C2H4Cl2, how many milligrams would the unknown sample weigh? Sorry for all the questions Dr. Bob.

Chemistry
Consider the reaction below : P4(s) + 5O2(g) ---> P4O10(s) How many grams of phosphorus react with 4.745 x 10^1 L of oxygen at STP to form tetraphosphorus decaoxide?

Chemistry
Thank you Dr. Bob.

Chemistry
How many moles of H atoms are there in 33.4282 grams of C2H4Cl2?

Chemistry
thank you :)

Chemistry
A sample of 0.30 moles of a metal M reacts completely with excess fluorine to form 18.69 grams of MF2. How many moles of F are in the sample of MF2 that forms? M + F2 ---> MF2 How many grams of M are in this sample of MF2 ?

Heat!!!
Can you please check my answers. My teacher gave me a list of 200 questions to study, but I lost the answer sheet. Can you please help me with these 23 Thanks 1. A silver bar 0.125 meter long is subjected to a temperature change from 200°C to 100°C. What will be the le...

Chemistry
Thank you

Chemistry
When 320.62 grams of Bi2O3 react with excess of C, how many moles of Bi form? I know I need to use stoichiometry, but I can't quite seem to get the correct balanced equation.

Chemistry
How many grams of C are required to make 431.47 grams of C3H8?

Chemistry
When 320.62 grams of Bi2O3 react with excess of C, how many moles of Bi form?

Chemistry
How many milliliters of 1.237 M HCl are required to react with 27.02 grams of MgCO3 ?

history
What was the significance of Winston Churchhill's Speech in 1946 in Fulton, Missouri? * plz help i have to write 2 paragraphs and cannot find enough info to write that much

math
Assume that both Jane and Kathy start with 0 marbles. If Jane wins the first 15 games in a row, she will now have 15 marbles, and Kathy will have -15 marbles. This is because for ever game Jane wins, Kathy needs to hand over a marble. Jane cannot win anymore games. The goal no...

Child Development
A good technique to prevent children from talking to you while you're observing them is to what? 1. Avoid eye contact 2. Sit far away 3. Stand to one side Which one is correct?? ( i think its one of the first two im not sure)

Math
The answer is 7 12+8+3= 23 so 30-23 is 7 At least this sounds right to me! Hope this works out for you.

French
1. _______ (On sundays), my parents _______(go) musee. 2. _______ (On Fridays) , my mother _______ (Go) Bank Sorry i did spanish at first, but any way this the translation for fre nch!

French
1. _______ (On sundays), month padres _______(aller) musée. 2. _______ (Viernes) , ma mère _______ (aller) Banque

Japanese
When i translated this it looked a lot diffrent then it does now! Sorry!

Japanese
1. ‚h@–Ú‚ðŠo‚Ü‚µ‚Ä‚­‚¾‚³‚¢6:00 ‚QD‚h@’©H‚ðH‚ׂĂ­‚¾‚³‚&cen...

child care
i just took the test that answer is correct!!

grade nine math
Oh so you are saying that the 35 should be a positive instead of a negative. Is that correct!!So the answer for r is 2. Thanks I think I get it.

grade nine math
is the answer to my equation right? equation: 5(3r-7)+r=3(r-3) 15r-35+r=3r-9 15r+r-3r=-35-9 13r/13 = -44/13

grade 9 math
Does this answer seem correct. 2k+3=4k-5 2k-4k+3-3=-5-3 2k-4k=-5-3 -2k/-2k = -8/2 k=4

grade 9 math
Can someone please help me solve this equation. And please explain how to break this down. 4b-6+b-9= 0

Physics
A car of mass = 1200 traveling at 60.0 enters a banked turn covered with ice. The road is banked at an angle , and there is no friction between the road and the car's tires.What is the radius of the turn if = 20.0 (assuming the car continues in uniform circular motion arou...

French
I wrote "Bien que Rousseau etait apparemement..." And my teacher underlined bien que and drew an arrow to etait...what could he be referring to? And I wrote "Mais Rousseau pensait aussi que la nouvelle connaissance parce qu'il permettait..." My teacher ...

French
I am trying to say "When one person has a loss, another could perhaps benefit." This is what I have: Quand une personne a une perte, une autre peut-etre pourrait profiter a la perte. Was I supposed to have used conditional? And do you notice any errors?

Chemistry
Consider the following reaction: H2+I2<->2HI A reaction mixture at equilibrium at 175 K contains P(H2)=0.958 atm, P(I2)=0.877 atm, and P(HI)=0.020 atm. A second reaction mixture, also at 175 K, contains P(H2)=P(I2)=0.616 atm, and P(HI)=0.106 atm. What will the partial pr...

Stats
How many different simple random sample of size 8 can be obtained from a population whose size os 42?

grade nine polynomials
(3/4) (1/-2) + (5/6) (-1/3)

grade 9 polynomials
7r +21s - 4r +18s 7r-4r =21s+18s 3r+39 Does this sound correct.

grade 9 polynomials
7 (r+3s) - 2(2r -9s) I am having a hard time solving can anyone please help

chemistry
What is the percent by mass of NaHCO3 in a solution containing 60 g of NaHCO3 dissolved in 500 mL of H2O

computer science
Create a method called countZeros, which takes an integer array as an input parameter and returns the number of zero entries in the array

How Children learn
1-20??

Teacher Aide
What are the answers??? And please let me know if you actually passed this exam.

Teacher Aide
Im doing Child devolopment and human behavior... and i want and need help! I have a headache! 1-20

Physics 102 (College)
256

Physics 102 (College)
5

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