Posts by LaLa

Total # Posts: 421

physicss
The oil drain plug on a car's engine has just been tighten to a torque of 25m*N. a) if a 0.15m long wrench is used to change the oil, what is the minimum force needed to loosen the plug? b) due to limited workspace, it will be necessary to crawl under the car. the force ...

math
A bag contains some silver balls and golden balls. If you remove one silver ball from the bag, 1/7 of the remaining balls in the bag are silver. If you remove 2 golden balls from the bag, then 1/5 of the remaining balls in the bag are silver. How many balls are there in the ...

physics
help please?? A bocce ball with a diameter of 6.00 cm rolls without slipping on a level lawn. It has an initial angular speed of 2.35 rad/s and comes to rest after 2.50 m. Assuming constant deceleration, determine (a) the magnitude of its angular deceleration and (b) the ...

physics
A car with a 65cm diameter wheel travels 3.0km. How many revolutions does the wheel make in this distance?

physics
A car with a 65cm diameter wheel travels 3.0km. How many revolutions does the wheel make in this distance?

physics
A car with a 65cm diameter wheel travels 3.0km. How many revolutions does the wheel make in this distance?

Physics
the cartesian coordinates of a point on a circle are (1.5m, 2.0m). what are the point;s polar coordinates (r, degree) of this point?

Physics
the cartesian coordinates of a point on a circle are (1.5m, 2.0m). what are the point;s polar coordinates (r, degree) of this point?

math
ABC is a sector of a circle with radius R cm and centered at C. The arc DE lies on a circle also centered at C.If the arc DE divides the sector ABC into two regions of equal area. Find the length of the interval CD in terms of R.

math
ABC is a sector of a circle with radius R and center C. The arc DE lies on a circle also centred at C. If DE divides ABC into two regions of equal area, find the length of CD in terms of R

math
the plan of a shopping complex is drawn to a scale of 1:400. A supermarket on the plan occupies an area of 0.25m square, calculate its actual area in hectares

physics
When bunting, a baseball player uses the bat to change both the speed and direction of the baseball. (b) The baseball has a mass of 0.11 kg; its speeds before and after the bunt are 16 m/s and 12 m/s, respectively; and the bunt lasts 0.023 s. What is the change in momentum of ...

Physics
A 1500 kg automobile travels at a speed of 105 km/h along a straight concrete highway. Faced with an emergency situation, the driver jams on the brakes, and the car skids to a stop. (a) What will be the car's stopping distance for dry pavement (µ = 0.85)? (b) What ...

Physics
Vector A, a wind velocity vector, has a magnitude of 20 miles per hour and is blowing toward the North. A second wind velocity vector, Vector B, has a magnitude of 50 miles per hour and is blowing toward the Southeast. A third wind velocity vector, Vector C, has a magnitude of...

Math
Two similar posters of transformers were displayed in a shop. The area of the larger posters is 117 cm square and the area of the smaller is 52 cm square. If the width of the larger is 18 cm, find width of the smaller.

Math
Students are making picture frames. They can choose from a brown or black picture frame, and a red, yellow, blue, or green matte. How many different picture frame and matte combinations can the students make?

Math
During the month of May, Jean has photography class every third day and a photography show every Saturday. On May 5 she has class and a show. During the month of May, how many more times will she have a class and a show on the same day? There are 31 days in May.

math
if the probability that an event E occurs is 1/p+1, then find the probability that E does not occur in terms of a simple fraction

math
if the probability that an event E occurs is 1/p+1, then find the probability that E does not occur in terms of a simple fraction

math
tracy is 7 times as old as heather. if let x be the age of heather now. If in five years time , tracy will be four times as old as heather, write an equation involving x and solve it to find what tracy's age is now.

Algebra
Solve for x. 4(12)4x=1000 Enter your answer to the nearest hundredth in the box. x ? 5.21

Science
(nvm my parent just submitted this science quiz for me, so now I have 6/7 questions right and two essays waiting for points)

Science
1. How did planetesmals form planets? A. They broke apart into smaller chunks. B. They collided and stuck together.<<(I think it's this answer) C. They cooled and pulled ice together. D. They began to rotate. 2. What distance was used to define the astronomical unit...

Social Studies
Maybe 1 is D and 2 is B?

Social Studies
1. Which river helped Rome grow and expand? A. Tigris<<(I think this is my answer) B. Alps C. Tiber D. Euphrates 2. Being away from the shore and on top of hills meant that Rome can be easily A. farmed. B. defended. C. bribed. D. attacked.<<(I think that this is my...

math
if A=5^3*7^3*3^4, find the smallest number A must be multiplied to get a perfect square

math
from a group of 5 people, how many ways can 3 be selected?

Chemistry
the right answer is 2.42x10^-19J. but once i plug the numbers on my calculator i get an error message.

Chemistry
Calculate the energy needed to ionize an electron of H atoms from its second excited state.

Penn foster
Please help me in this Exam Number 059839RR Gourmet Essentials

Penn foster
A healthier substitution for one egg is

Social Studies 6 B
I don't know if I feel like reading it but maybe 1 is D, 2 is B, 3 is A, and 4 is C.

Social Studies 6 B
Well, for this quick check. I think that 1 is A, 2 is C, 3 is D, and 4 is B. But, I am not sure which one is right and which one is wrong.

Social Studies 6 B
I know but I do not know the answers.

Social Studies 6 B
Ok but I'm in connexus and I don't know the right answers to this quick check.

Social Studies 6 B
1. The Saraswati River was a twin to which other river? A. Ganges. B. Tigris. C. Himalaya. D. Indus. 2. Glacial runoff and ________ provide the water for the large rivers of India. A. underground wells. B. melting snow. C. rain. D. steam. 3. Saraswati means A. "god of the...

Finance
You plan on depositing $10,000 at the end of each year for 30 years into a retirement account that pays 5% interest. How much could you withdraw annually in equal beginning of year amounts starting at the time you make your last deposit and continuing for a total of 20 years, ...

Finance
EMAR expects to receive $2,000 per year for 10 years and $3,500 per year for the next 10 years. What is the present value of this 20-year cash flow? Use an 7% discount rate.

Finance
Suppose you borrowed $15,000 at a rate of 9% and must repay it in 5 equal installments at the end of each of the next 5 years. What is the outstanding balance of the loan at the end of second year?

Math
9:2x=15:12 , so x= ..?

physics
a car travels at 25m/s on a slick road takes 4 second to come to a complete stop. what was the car's average acceleration over 4 second?

Math
A garden is 3m wThere is a pathway that runs along the perimeter inside the garden.If the area of pathway is half of the area of garden, then the width of the pathway is how many meters?

English
In the Night The Bed Fell, what is the father's reaction to the scene he discovers when he opens the attic door? He is ready to chase a burglar He's worried someone's been hurt He wants to know what's happened He's glad that everyone's all right My ...

Math
OF COURAE ITS B!!!

Math
Find the quantity of which: 5.4 kg is 45%

physics
0.1 n/m

math
361.14

English (Langue Arts)
What does the following quote from “The cask of Amontillado “ reveal about what Montresor wants his servants to do ? "I had told them that I should not return until the morning and has given them explicit orders not to stir from the house. These orders were ...

accountung
23.50 per mo for 540 min

accountung
a fixed mo fee of 22.00 up to 510 min. then .05 per min thereafter if i use less than 510 min i still pay 22.00 per month based on 100 min/ 240 min. 540 min.

accounting
paying a fixed monthly fee of $15.00 up yo 240 min then .08 per min if i use less than 240 min still paying 15.00 per mo. based on 100 min 240 min 540 min

Accounting
variable cost, fixed cost, total costif .10 per min long dist calling based on 100 min, 240 min, and 540 min

Math
I wish that I knew the answer to help. I have the same question I need to answer

Biology
@MsSue

Biology
I think it is a and c

Biology
Which of the following animals are considered hominiods? Select all that apply. gibbons Old World Monkey orangutans tarsiers

Biology
So is it five percent @MsSue

Biology
I think it is 5% I'm not sure

Biology
What percentage of animals on earth are vertibrates? 5% 25% 50% 95%

maths
A car completes a trip in 20 minutes. for the first half of the trip the speed of the car was 100km/h and the speed for the second half of the trip was 90km/h. How far did the car travel (in km) if the distance for the first part is the same as the second part

Math: Angles of Elevation and Depression
What is the angle of elevation from a ship to the top of a 36m lighthouse at the waters edge when its 40 away

math
3 group of w is what in algebraic expression

SS 1 QUESTION PLZ HELP
Are these right for sure?

Socialsl studies
No, He's right

chemisty
Gary is carrying out two chemistry experiments. In experiment A he mixes hydrochloric acid with sodium carbonate. In experiment B he mixes nitric acid with copper carbonate. Explain what Gary will need to do in order to test the gas produced in each experiment. I don't ...

Math help
A small recording studio that produce its own records is able to press 100 records a day for a profit of $3.60 per record. If a more expensive process is used, production can be increased, but the profit per record diminishes by 2 cents for each additional record produced. how...

Matsci
If the absolute pressure at the bottom of the ocean is 120 kPa, how deep is the water at this point

Statistics, Math
For 30 randomly selected Rolling Stones concerts, the mean gross earnings is 2.37 million dollars. Assuming a population standard deviation gross earnings of 0.52 million dollars, obtain a 99% confidence interval for the mean gross earnings of all Rolling Stones concerts (in ...

writing
FR thats so rude she just announced wonderful news

writing
Congrats Mrs. Sue

science help
No it's c.

Math
It is 2 5/8

chem
Calculate the number of kJ released for the reaction shown below, if you begin with 52 grams of fluorine (F2), and the ΔH = -542 kJ. H2(g) + F2(g) → 2 HF(g)

integrated science
with all other factors equal, if you double the balanced force on an abject of a given mass the acceleration will be?

English 10
Informal and simple.

Math sequences
Determine the smallest interger n such that 1+(4/5)+(4/5)^2+...+(4/5)^n>4.9 Please explain ti me about thisquestion. I can'tunderstand it.

Science
Omygossh thanks damon!!! :)

Science
The rider of a ferris wheel moves at a rate of 0.18 m/s2. If the rider is 5.0 m from the center of the ferris wheel, What is his/her Velocity? Can't figure out if the RADIUS and RATE are the same and Which one is the radius/rate?

Math
1.) In the following problem, write the first five of the terms of the arithmetic sequence. a1=16.5 d=0.25 2.) Find a the correct formula for the an for the arithmetic sequence. a1=-1 d=5

Science
the energy an object has due to it's motion is called a what?

Science
All corret!!!

quick question
could you tell me what there asking for ?

quick question
what are three programs financed from one payroll tax to which employers and employees contribute at a rate specified by law ?

Science
The answer is not B it's D!!!!

Math
Find the exact value: cos(pi/16)cos(3pi/16)-sin(pi/16)sin(3pi/16)

algebra
A fuel storage tank has one supply pump and two identical outlet pumps. With one outlet pump running, the supply pump can increase the fuel level in the storage tank by 8450 gallons in 30 minutes. With both outlet pumps running, the supply pump can increase the fuel level in ...

algebra
A motorboat traveling a distance of 225 miles in 5 hours while traveling with the current. Against the current, the same trip took 9 hours. Find the rate of the boat in calm water and the rate of the current. rate of boat___ mph rate of current___ mph

Science 8 - Check Answers
What are the answers at

calc 3
1. Evaluate the given integral by making an appropriate change of variables, where R is the region in the first quadrant bounded by the ellipse 36x^2+25y^2=1. L= double integral R (4sin(144x^2+100y^2) dA. 2. Use the given transformation to evaluate the given integral, where R ...

chemistry
Calculate the pH of 0,3g calcium hydroxide dissolved in water to give 500ml solution.

Language Arts
Are you guys going to Connexus?

college algebra
The rate at which water evaporates from a certain reservoir depends on the air temperature. The table below shows the number of acre-feet (af) of water per day that evaporate from the reservoir for various temperatures in degrees Fahrenheit. Temperature, °F af 40 760 60 ...

college algebra
A piece of pottery is removed from a kiln and allowed to cool in a controlled environment. The temperature (in degrees Fahrenheit) of the pottery after it is removed from the kiln is shown for various times (in minutes) in the following table. Time(min) Temperature (F) 15 2200...

Physics
A square loop of wire of side 3.0 cm carries 3.0 A of current. A uniform magnetic field of magnitude 0.67 T makes an angle of 37degree with the plane of the loop. What is the magnitude of the torque on the loop? What is the net magnetic force on the loop?

Physics
a singly charged ion of uknown mass moves in a circle of radius 12.5 cm in a magnetic field of 1.7 t. the ion was accelerated through qa potential difference of 5.7 kv before it entered the magnetic field. what is the mass of the ion

Math
Determine if correct or incorrect and justify yourself. n^3 = O(n^2 + n^3) The O is the big Oh notation.

4th grade math
If jill climbed 100 feet more, how many feet above sea level would she be?

Economic
capital rationing assumes?

Economic
a 20 year bond pays on a face value of $1,000. If similar bonds are currently yielding 9%. What is the Market value of the bond?

Economic
Suppose a firm has a constant marginal cost of$10 the current price of the product is $25, and at that price, it is estimated that the price elasticity of demand is -3.0. Is the firm charging the optimal price for the product? Demonstrate how you know.

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