# Posts by mm

Total # Posts: 229

**Elastic Collisions-Physics**

A 0.16 kg billiard ball moving at 1.20 m/s collides elastically with one of the same mass at rest. It continues at a speed of 0.6 m/s afterward in a different direction from before. What is the final speed of the other billiard ball? I thought it was 0.6 m/s but it says I am ...

**Physics**

A 0.145 kg baseball is thrown at a launch angle of 30° and strikes the ground at 18 m/s. How fast would it be moving when it reaches the ground if it's launch angle were 45°? Ignore air resistance. A. 340 m/s B. 210 m/s C. 16 m/s D. 18 m/s

**Inflation and Actual Rate of Return**

Becka borrowed $500 from her cousin at the rate of 9% per year. If the inflation rate was 2.9% that year, what is her cousin's actual rate of return on the loan?

**APR Problem**

After visiting several automobile dealerships, Richard selects the car he wants. He likes its $11,000 price, but financing through the dealer is no bargain. He has $2,200 cash for a down payment, so he needs an $8,800 loan. In shopping at several banks for an installment loan...

**APR Problem**

Joshua borrowed $1,900 for one year and paid $95 in interest. The bank charged him a service charge of $22. If Joshua paid the $1,900 in 12 equal monthly payments, what is the APR? (Enter your answer as a percent rounded to 1 decimal place.) So, I got 117/1900= 6.2%, but it ...

**Stast**

Mean=15.854, Median=15.99, Mode=16.21, SD=0.661381 1) what is the probability that a randomly chosen bottle will contain 16 ounces of soda? 0.22075, 0.587357 2)What is the value of soda associated with a Zscore of -1.5

**Physics**

The picture shows a two-dimensional free body diagram of a truss with a pin joint at one end. The free body diagram at the pin joint should show: a. no forces at the joint b. only parallel force component c. only perpendicular force component d. both parallel and force ...

**Physics**

Newton's laws of motion work best for objects under which conditions. a. very slow and fast moving. b. very large and slow moving. c. very small and slow moving. d. very large and fast moving.

**Physics**

Based on the data from both experiments, predict how the angle of slip might change as the weight of the block increases. a. The angle of slip has no correlation to the weight of the block b. As the weight of the block increases, the angle of slip will decrease c. As the ...

**Physics- Magnetic Field inside of coil**

Current flows through the wire coil in the direction shown by the arrows. What is the direction of the magnetic field inside the coil? (Image shows arrow pointing up into the right side of the coil and pointing down at the left side of the coil) a. upward b. downward c. toward...

**Physics- Free Body Diagram; Truss with Pin Joint**

The picture shows a two-dimensional free body diagram of a truss with a pin joint at one end. The free body diagram at the pin joint should show a. no forces at the joint b. only parallel force component c. only perpendicular force component d. both parallel and force components

**Physics- Newton's Laws of Motion Works Best When?**

Newton's laws of motion work best for objects under which conditions. a. very slow and fast moving. b. very large and slow moving. c. very small and slow moving. d. very large and fast moving.

**Maths**

Almaz Has Taken 2 Tests.Her Average Score Is 7 Out Of 10.The product Of Her Scores Is 45.What Did She Score In Each Test?

**Maths**

Almaz Has Taken2 Tests.Her Average Score Is 7 Out Of 10.The Product Of Her Score Is45. What Did She Score In Each Test?

**Physics- Energy Released In Chemical Reaction**

The reaction between two hydrogen isotopes is shown below: 2H + 3H ? 4He + n + energy released The energy released in this reaction is: a.equal to that in a fission reaction b.equal to that in a chemical reaction. c.less than that in a chemical reaction. d.greater than that in...

**Physics- Car moving with speed of 22 m/s...**

A car is moving with a speed of 22 m/s. The driver then brakes, and the car comes to a halt after 6.5 s. What is the distance covered by the car after the driver brakes, until it comes to a stop? a. 36 m b. 72 m c. 140 m d. 219 m

**Physics-Uncertainty Principle**

On the subatomic level, the uncertainty principle creates situations in which ___________ does not apply.

**Physics- Equilibrant Force**

Two movers are pushing a large crate with a force of 50.0 N each. One pushes north, the other east. What is the equilibrant force? a. 71 N Southwest b. 50 N Northeast c. 100 N Southeast d. 71 N Northeast

**Physics- Equilibrium**

Which of the following is in equilibrium? a. an object that was thrown straight upward at the moment it has zero velocity (my answer) b. an object moving in a circle at constant speed c. an object that moves at constant velocity d. an object that moves at constant acceleration

**Physocs- Components of Resultant Vectors**

The force vector A has components Ax= 5N, Ay= -3N. The force vector B has components Bx= 5N, By= 4N. What are the component of the resultant force vector C=A+B?

**Physics- Accleration of a Falling Penny**

A visitor to the observation deck of a skyscraper manages to drop a penny over the edge. As the penny falls faster, the force due to air resistance increases. How does this affect the acceleration of the penny? a. The acceleration decreases b. The acceleration remains constant...

**Physics- Baseball thrown upwards, accleration**

When a baseball is thrown straight upward, what is its acceleration at its greatest height? a. 9.8 m/s2 upward b. 9.8 m/s2 downward (my answer?) c. 0 m/s2 d. 9.8 m/s2 horizontally

**Physics- Object Reaches Maximum Height**

When an object that has been thrown into the air reaches its maximum height, which is true? a. its velocity is zero. b. it is at its terminal velocity. c. it is not in free fall. d. its acceleration is zero.

**Physics-Tension Force**

A strong, weightless rope has a 0.15 kg mass hanging from the middle of it. What tension force will make the rope horizontal, corresponding to ?=0°?

**Physics**

A baseball with a mass of 0.145 kg is thrown straight down at the ground. At a particular speed, it has a drag force of 0.4 N acting on it. What is its acceleration at that time? a. -7.0 m/s2 b. -2.8 m/s2 c. -9.8 m/s2 d. -12.6 m/s2

**Gyroscopes/Physics**

Which of the following best describes the motion of a working gyroscope moving through space? a. the gyroscope both translates and rotates b. the gyroscope rotates, abut does not translate c. the gyroscope neither translates nor rotates d. the gyroscopes translates, but does ...

**Physics**

A bicycle and rider travel along a road. Which of the following statements is true? a. Only the rider undergoes a translation. b. Only the bicycle undergoes translation. c. Neither the bicycle nor the rider undergoes a translation. D. The bicycle and rider undergo translation

**Physics- displacement, velocity, etc.**

25. Maria is standing at the edge of a cliff that is 10 m high over a canyon. She throws a rock upward off the side of the cliff. Right before the rock reaches the canyon floor, it has a speed of 25 m/s. a) What was the rock’s total displacement? 10 meters b) What was the...

**Physics- Acceleration**

A car starts at rest and accelerates at a constant rate for 12 seconds to a speed of 30 m/s. a) What is the acceleration? b) What is the total distance traveled in these 12 seconds?

**Physics- Velocity, Displacement, etc.**

A child boards a bus for summer camp. His mom is waiting next to the bus. The bus begins moving 3 m/s east with respect to the ground. The child is walking 0.5 m/s west towards the back of the bus with respect to the bus. The mother begins running 1 m/s east with respect to ...

**Physics**

A river has a current of 4 m/s south with respect to the shore. A swimmer is swimming in the river (which is redundant). a. If the swimmer is swimming 2 m/s north with respect to the water, what is his velocity relative to the shore? b. If the swimmer is swimming 3 m/s south ...

**math**

the numerator of a fraction is 3 less than the denominator. if 4 us added to the numerator and to the denominator, the resulting fraction is equivalent to 3/4. find the original fraction. Show your solution

**math**

the numerator of a fraction is 3 less than the denominator. if 4 us added to the numerator and to the denominator, the resulting fraction is equivalent to 3/4. find the original fraction

**11th Grade physics**

do your own work

**chemistry**

which alcohol and carboxylic acid would produce isoamyl propanoate by Fischer esterification

**algebra**

The number of years, N(r), since two independently evolving languages split off from a common ancestral language is approximated by N(r)= -5000 1n r, where r is the proportion of the words from the ancestral language that is common to both languages now. Find each of the ...

**Math**

,,

**algebra**

A college is planning to construct a rectangular parking lot on land bordered on one side by a highway. The plan is to use 520 feet of fencing to fence off the other three sides. width length

**algebra**

The function D (t) = 16t^2 to the second power – 140t gives the distance a car going a certain speed will skid in t seconds. Find the time it would take for the car to skid 170 feet. The time to skid 160 feet is __________ seconds.

**algebra**

The function D (t) = 13t^2 to the second power – 120t gives the distance a car going a certain speed will skid in t seconds. Find the time it would take for the car to skid 170 feet. The time to skid 170 feet is __________ seconds.

**algebra**

triangle abc is similar to triangle def and has a ratio 8/10 = 16/20 = 4x+6/4x+11 side ac= ?

**algebra**

the weight w of an aluminum flatboat varies directly with the L length of the boat. If a 8-ft boat weighs 120 pounds, then what is the weight of a 7 ft boat?

**algebra**

(ca)/(b)=(fd)/(e) solve for a

**algebra**

The force needed to keep a car from skidding on a curve varies jointly as the weight of the car and the square of its speed and inversely as the radius of the curve. If 182lb of force keep a 1800lb car from skidding on a curve of radius 600ft at 30 mph, what force would keep ...

**math**

equilateral triangle is increasing at a rate of √3 cm/min. find the rate at which its area increasing when its edge is 12 cm long

**help**

so do i this has to come out of you. do you go to connexus @mio

**Language arts**

i am sorry mean if you don't want that many answers just do your own work.

**Language arts**

if you don't that many angers don't ask do you own test. i go to connexus too

**Math**

they don't count this test for anything

**physics**

9.8

**DON VASCO PATNA**

c1v1=c2v2 20%*15L=15%*L 20/100*15=15/100*L 3=3/20*L L=3*20/3 L=20Ltrs

**Statistics**

A student makes random guesses on 6 multiple-choice questions. One of the 5 choices in each question is correct. What is the probability that the student will get at most 4 answers right?

**Material Sciences**

E = 3.5 Mpa Young's modulus increases

**Material Sciences**

Pyrex

**Material Sciences**

sigma = -E*alpha*DeltaT Compressive

**advanced algebra**

bbb

**Chemistry**

1.5g/56.1 = 0.0268 And its neutralisation reaction

**Science**

So what are the answers?

**science**

it is also known as geomagnetic field

**Math**

17.5

**PHYSICS**

seems to be OK...really do not know where is the problem...

**PHYSICS**

you cannot use it, because the temperature is not a constant

**PHYSICS**

sorry, didn't realize - h is z (height)

**PHYSICS**

I used this one: p=p0*[T0/(T0+alpha*(h-h0))]^(g*M/(R*alpha))

**PHYSICS**

I found two types of formulas for such a problem - the first one is only for the case of isothermal atmosphere, the second one is for this case, in which the temperature is the function of the height - maybe that's why your solutions aren't correct

**Physics**

A curve of radius 59.9 m is banked so that a car of mass 1.4 Mg traveling with uniform speed 50 km/hr can round the curve without relying on friction to keep it from slipping on the surface. At what angle is the curve banked? The acceleration due to gravity is 9.8 m/s2 * I ...

**math**

Proving Trigonometric Identities 1. sec^2x + csc^2x= (sec^2 x)(csc^2 x) 2. sin ^3 x / sin x - cos 3x / cos x = 2 3. 1- cos x/ sin x= sin x/ 1+ cos x 4. 2 sin x cos ^2 (x/2)- 1/x sin (2x) = sinx 5. cos 2 x + sin x/ 1- sin x= 1+ 2 sin x

**Statistic**

IQs among undergraduates at Mountain Tech are approximately normally distributed. The mean undergraduate IQ is 110. About 95% of undergraduates have IQs between 100 and 120. The standard deviation of these IQs is about A. 5 B. 10 C. 15 D. 20 E. 25

**chemistry**

If the freezing point of the solution had been incorrectly read 0.3degrees C lower than the true freezing point, would the calculated molar mass of the solute be too high or too low? Explain.

**MATH**

answers

**math**

what is the purpose of using fraction strips and a 1 strip

**Calculus**

thanks a ton.

**Calculus**

A solid is formed by adjoining one hemisphere to the top of a cylinder. The total volume of the solid is V (treat as a constant) cubic centimeters. Find the minimum surface area of the solid in terms of V.

**chemistry**

1.67

**Mathematics**

Find the maximum or minimum values of sin x+sin y+sin(x+y)

**biology**

What is the function of macronucleus and micronucleus in a paramecium?

**biology**

Why are multicellular protista( seaweed) not classified in the plant kingdom?

**physics**

using the formula vf^2=vo^2+ 2ad you can find out the answer. Because the stone is dropped the acceleration is -9.8m/s^2 and the vo=0m/s. The distance is aleady given to you. From here simply plug in the numbers and do the calculations to figure out vf. It should be around 11m/s

**English**

1. B 2. D 3. B 4. B 5. A 6.C those were wrong so yeah I don't know

**English**

well look the answers I had before were wrong if you could help that would be appricatated

**English**

As you research, verify the facts you find by consulting______. A.Mutilple sources B.Yor English teacher C.The encyclopedia D.The preface Secondary sources______. A.Provide firsthand testimony and direct evidence B.Interpret and analyze primary or other secondary sources C....

**English**

thank you both apparently what i wrote before was too short

**English**

ok..... umm his life, his work and why i want him as a speaker

**English**

I say he would because of all the things he's done and how he himself affects us now

**English**

I Need help on writing an essay, Would Steven Spielberg be a good speaker for a school assembly? Write a letter convincing your principal that Steven Spielberg would or would not be a good speaker for an assembly at your school.

**Government**

the role of the house rules committee is played in the senate by the a. president pro tempore b. president of the senate c. whip d. majority floor leader House leaders may use any of these calendars to schedule debate on a bill except: A)Union Calendar B)House Calendar C)...

**English**

Well that's what the thing said I just posted it cause I needed help even my teacher was questioning the answer choices it provided

**English**

Oh well why'd you ask me about if I've known the meaning of procedural? well thank you anyway I wasn't trying to get answers i just was rushing to post my answers

**English**

What last two do you agree with?

**English**

My Answers to the following questions: What is the most important reason to consider typography when creating a procedural text? (X)B.It makes the document look nice. Which organizational type is most appropriate for a procedural text? (X)A.Order of importance from most to ...

**English**

What is the most important reason to consider typography when creating a procedural text? A.It provides white space around the text. (X)B.It makes the document look nice. C.It adds variety to the document. D.It helps the reader find important information. Which organizational ...

**English**

What is the most important reason to consider typography when creating a procedural text? A.It provides white space around the text. B.It makes the document look nice. C.It adds variety to the document. D.It helps the reader find important information. Which organizational ...

**English**

To find the main idea of an informational text, look for A. who wrote the article and what company/universit they are from. B. Why the text was written C. What the author talks a lot about throughout the text D. None of these Which of the folllowing is not one of the three ...

**English**

thank you ^^

**English**

In "The Second Coming," what is Yeats' prophecy for modern civilization? a. World War II will kill millions of civilians and soldiers b. The United States will become the dominant world power c. Western civilization will enter a period of decline d. Science will ...

**History**

ok well thx I passed my History class whew I've been working on that for months now I only have English, Government &Economics

**History**

True Or False; The Political machines of the large cities determinded what type of projects would be funded by tax dollars and for the most part they were honest organizations, The U.S. government's treaties were just ways of moving the Native Americans around so that it ...

**U.S. History**

The new morals and manners of the 1920s were reflected in A. women's fashion B. the great migration C. the new factory jobs D. Politics Americans responded to the Selective Service Act A. with enthusiasm B. with antiwar riots C. by refusing to register D. by becoming ...

**U.S. History**

Ok well thank you Ms. Sue

**U.S. History**

A,B, A & D