Posts by joy

Total # Posts: 802

A particle's position is given by z(t) = ?(8.10 m/s^2)t^2k for t ? 0. (Express your answer in vector form.) (a) Find the particle's velocity at t = 3.00 s and t = 6.00 s.

The figure shows the y-position (in blue) of a particle versus time. (a) What is the average velocity of the particle during the time interval t = 1.50 s to t = 4.50 s? (Express your answer in vector form.) Incorrect: Your answer is incorrect. webMathematica generated answer ...

A race car travels 950 km around a circular sprint track of radius 1.343 km. How many times did it go around the track?

unit of distance used in astronomy is the parsec (pc): 1 pc = 3.26 ly. The distance to the Earth's next-nearest star, ?-Centauri, is 1.3 pc. Find the distance d to ?-Centauri in light-years and in meters.

During a visit to New York City, Lil decides to estimate the height of the Empire State Building (see figure below). She measures the angle ? of elevation of the spire atop the building as 17°. After walking x = 9.28 ? 102 ft closer to the iconic building, she finds the ...

Heat in= (2kg)(.34)(100) 68

Calculate the heat energy needed to change the temperature of 2 kg of copper from 10°C to 110°C. I forgot the formula

The problem is I don't even know how to get started. My book is horrible at explaining the concept. My guess is 2 batches for the first question, but then I'm not sure how to figure out the next two.

A food manufacturer has to decide how many batches of a product to produce next week. If one batch is produced then a profit of $15,000 will be made. If two batches are produced then either a loss of $5,000 will be made if demand only equals one batch or a profit of $20,000 ...

An observer watching a fireworks displays sees the light from an explosion and hears the sound 2 seconds later how far was the explosion from the observer(speed of sound is air 340m/s)

The solubility Of KCLO is 33g per dm of water at 70 and 8g per dm of water at 20 calculate the mass of the solute which will crystallize out when 160g of the saturated solution is cooled from 70 to 20

Explanation of if the cell undergoes mitosis every 6 hours,how many cells will there be in all after 4 hours

I have tried googling 'social groups' and then each term after it. Any other suggestions on what terms I could use? Thanks!

Describe social groups in general, and then compare/contrast 3 types of groups as discussed in the course. So I got the description down. I am trying to do the compare/contrast on friendship, clubs and cooperatives. I wrote down things in the book about each, but not much info...


I don't know

Yes it's wrong

Home economics

Home Economics
I don't know

what process should a research use to determine the value of classroom management to program participants?

Number theory
What is the remainder when 2^50 is divided by 7

A piece of copper ball of mass 20g at 200°c is placed in a copper calomiter of mass 60g containing 50g of water at 30°c ignoring heat losses.calculate the final steady temperature of the mixture

A student starts from A and walks 3km east to B, she then walk 5km on a bearing 152 degree from 13 . She reaches a point c . Find the distance and bearing of C from A.

Social Studies
What is the importance of modern businesses to Georgia? Choose 2. A) They provide jobs. * B) They are always found in shopping centers. C) They drive Georgia's economy.* D) They are always in retail. I chose A & C.

Explain 11.55 length and 6.5 height of a basketball. Explain the equation using the measurements?

describe what happens, at the molecular level, during melting.

The ratio of girls to boys in a school is 5:3. If there 60 boys, how many girls are in the school? I guessed it is 5+3=8.8/60

There are m boys and 12 girls in a class what is the probability of selecting of random 1 a girl 2 a boy from class

Ive downloaded 3 journal articles, i just neeed someone to help me identify the ststistical procedures used in each articles Can somebody who knows ststistics plesse help me... How do u want to read theses 3 short journsl articles? Plesse i beg u

PSYDAG Statistics ( no computation)--help please
Hi first what are statistical tools? What are statistical procedures? can you give an example of each and a brief definition? next Our assignment is to look for 3 very short/short (as much as possible please)journal articles about psychology or anthropology or social ...

Microbes and Society
What subj is this? One is that they broke the rules theyve imposed--the guards beating the so played prisoners

Pss... psss..... U know just imagine how a butter makes sound

American History
If The British Government Could Do It Over Again The British governing policy of salutary neglect gave the young colonial governments a chance to "experiment" with their own self-governance. Gaining confidence in their abilities to rule the people without the British...

Social Studies
What was the purpose of the Freedman's Bureau?

A bullet is fired in a horizontal direction with a muzzle velocity of 300m\s in the absence of air resistance,how far will it have dropped in travelling a horizontal distance of (a)20m (b)40m (c)60m (d)how far will it drop in one second


An ap has 15th and a common difference of -3 find the first and last term. If it. Sum is -120

Word problems
I have some money, I spend half at the bookshop, a quarter at the supermarket and an eighth on sweets. I have £3.25 much did I have to start with

a simple pendulum has a period of 2.0s and an amplitude of swing 5.0cm.calculate the maximum magnitude of the acceleration of the bob

he a body is moving in a circular track of radius 100m with a velocity 120m/s.determine the banking angle of the track (g=9.8m/s)

brad can bicycle at a rate of 35km/h. What is his speed in meters per second?

Is n always sometimes or never a positive number

two students are picked at random from a group of 8 girls and 6 boys,calculate the probability that the two picked atleast one is a boy.

American Government
1) C 2) D 3) D 4) C These are 100% correct for Unit 2 Lesson 6 assessment.

social studies
The answers are : 1 C 2 D 3 D 4 A I just did assessment and got a 100%.

U.S. History
Unit 2 Lesson 4 Quiz 1) B 2) D 3) A 4) C 5) B 6) D 7) B 8) C 9) B 10) B,C,D,E I just took the quiz. These are 100% correct.

booby cut a piece of wood into 3 pieces of the same length. after he cuts off 2 feet from one of the pieces, he is left with piece that is 5 feet long. what is the length of the piece of wood he started with?

What is the place value of 5 in the smallest possible nine digit number without repeating?

I am a a seven-digit number my millions place is 5. My ten thousands and hundreds place is the difference between my millions place and hundreds place . And my remaining place value is 0 what number am l ?

Preparating ground for new product

A paper cone has a base diameter of 8cm and a height of 3cm(a) use Pythagoras theorem to calculate it's slant height (b)if the cone is cut and opened out into the sector of a circle what is the angel of the sector

Social studies
1) A,B,C 2) A, D 3) A, B, D I promise these are 100% correct. I just did the assessment.

P1*V1 = P2*V2 P2 =( 36*84)/216 P2= 14 Pa


Public policy
. Which of the following is among the impediments to government action on health care? (Points : 1) Frequency of divided government and the resulting decentralization of the legislative process Magnitude of disagreement between citizens and the insurance industry Ideological ...

life orientation
I want answers


Solid Mensuration
The diagram is formed from 6 identical closed-packed circles. If the height of the figure is 2 feet, find the radius of each circle in inches. Show your complete solution with formula.

Solid Mensuration
Include your complete solution please.

Solid Mensuration
The diagram is formed from 6 identical closed -packed circles. If the height of the figure is 2 feet, find the radius of each circle in inches.

Solid Mensuration
one diagonal of a cyclic quadrilateral coincides with a diameter of a circle whose area is 36pi cm^2. If the other diagonal which measures 8cm meets the first diagonal at right angles, find the area of quadrilateral. Show your solutions

Life orientation
Can u plz stop writing nonsense nd answer wat is required

A rotating flywheel of diameter 48.0 cm uniformly accelerates from rest to 240 rad/s in 15.0 s. Find the linear velocity of a point on the rim of the wheel after 15.0 s. Round answer to one decimal place.

1) D 2) B,C 3) B 4) C,D These are 100% correct for Connexus Unit 4, Lesson 2.

Social studies
Correct answers for U3L9: 1) D 2) B,C,D 3) B,C,D 4) C 5) D

1) D 2) D 3) A 4) D 5) B 6) A 7) B 8) B 9) D 10)A 11)C 12)B 13)B 14)B 15)D 16)D 17)B 18)B 19)C 20)D 21)D 22)C 23)C 24)A 25)B 26)A 27)A 28)B 29)D 30)C 31)D 32)B 33)A 34)B 35)C 36)C These answers are 100% correct for Unit 1 test. I just took the test.

A MACHINE OF EFFICIENCY 60% IS USED TO RAISE A LOAD OF 150kg THROUGH A VERTICAL DISTANCE OF 2.5m.CALCULATE THE WORK DONE [IN JOULES]. I tried E=WORK OUTUT/WORK INPUT times 100% 60=150 times 10 times 2.5/work input times 100 60 times work input=3750 times 100 work input=375000/...

serenity is 13 years old than chase. the sum of their ages is 27. how old are they?

Social studies
1) A&B 2) D 3) B 4) B 5) true 6) B 7) A I just took the quiz & these are 100% correct.

one leg of the right triangle is 10 cm and the hypotenuse is 20 cm longer than the other leg.Find the lenght of the unknown sides.

Algebra 1
my test was a little different but thank you for the answers!

Is it ok to say ils sont des freres ? Or ils sont freres. Thank you

Social Studies
1) A 2) B 3) D 4) A,D These answers are 100% correct.

9th grade LA U4 L 5 quick check answers 1) B (mid 70s) 2) A 3) A These are 100% correct just took quick check.

Social Studies
These answers are 100% correct: 1) A 2) C 3) A 4) B 5) B,D 6) A 7) A,C,D

Intellectual Academy
Pls show me the steps how to work this physics question:A pulley system of 4 pulleys is used to raise a loan of mass 50kg vertically,if its effeciency is 80%,determine the minimum effort required to raise the load(g=10ms-2)?


World Geography
These are the answers for Unit 4 Lesson 1 Quiz 1)B 2)B 3)C 4)B 5)C 6)A 7)C 8)C 9)B 10)A Hope this helps someone.

joint heirs college, Fola agoro, shomolu Lagos.

A construction crew has just finished building a road. The road is 10 kilometers long. If the crew worked for 4 2/3 days, how many kilometers of road did they build each day? (Assume they built the same amount each day.) Write your answer as a mixed number in simplest form.

What is Physics

You have 325 mL of an 0.11 M acetic acid solution. What volume (V) of 2.00 M NaOH solution must you add in order to prepare an acetate buffer of pH = 5.07? (The pKa of acetic acid is 4.76.)

Lccn acardamy
What are the deffrance between mecury, alchol, water?

1D 2B 3B 4D 5C 6B 7B

Two marbles are sitting side by side in a glass container. The base of the container is 10 units long and the radius of the smaller marble is 2 units. What is the radius of the larger marble? Describe the strategy you are going to use to answer the question.

math 4

I think the answer is D

Georgia Studies
Thanks anonomys!

What is anomie and its connection to norms?

Why does morality have little part to play in your Judging of deviance?

4th Grade

hi, need help.. use the atomic weight of carbon and chlorine to determine the theoretical value of the molecular weight of CH3OH(I've calculate the average mr of CH3OH -->0.39g/mol).(atomic weight: c= 12.0, cl= 35.5)

Language Arts
Thanks ladykiller! You are 100% correct. Others didn't even have 5 answers.

7th grade math (probability)
Of the students 63%girls the school is randomly selecting to be interviewed describe the complete as a selecting a girl and find the probability of the complainant write the answer as a fraction decimal and percent

Physical science
which liquid evaporates fastest between water , ethanol , nail polish remover and methylated spirits

The equation of a certain line, when written in general form, is 5x+3y+7=0 . The slope of the line is m , the y-intercept of the line is b , and x-interept of the line is x1 . what is the Value of m*b*x1 ?

math - URGENT
How to get -79 ?

math - URGENT
I'm don't understanding how to solve this question: The graph of a line passes through the x-intercept of y-20=2/11(x-31) and is perpendicular to the line y=1/7x+7 . The equation of the line, written in Slope-Point form, is y-p = m(x-q). what is the value of m*q ?

What is the equation for the line that passes through W(-10,-9) and is parallel to y=5/32x-10 ? Thank you....

Social Studies
1)C 2)A 3)C 4)B 5)C 6)C 7)A 8)C 9)C 10)D I just took the quiz and these are 100% correct!

  1. Pages:
  2. 1
  3. 2
  4. 3
  5. 4
  6. 5
  7. 6
  8. 7
  9. 8
  10. 9
  11. Next>>