# Homework Help: 11th Grade

**11th grade**

volatile liquids with lower boiling points give better results than those with higher boiling points. suggest a reason for this.

*Sunday, October 31, 2010 by Anonymous*

**11th grade**

a soccer ball is kicked with an initial velocity of 5.0 m/s in a direction of 30 degrees above the horizontal a. what are the initial components of the velocity? vix= viy= b. what are the components of the veloicty just before the ball hits the ground? vx= vy=

*Sunday, October 17, 2010 by elana*

**11th grade**

When the shuttle bus comes to a sudden stop to avoid hitting a dog, it decelerates uniformly at 5.3 m/s2 as it slows from 9.5 m/s to 0 m/s. Find the time interval of acceleration for the bus. Answer in units of s

*Monday, October 11, 2010 by leigha*

**11th grade**

How would I solve the following equation for x? 2 sin^2(x) + 3 tanx secx = 2 I've tried the problems from different approaches, but couldn't come up with a solution. Could you please provide your thought process. It would be greatly appreciated. Thanks!

*Friday, October 1, 2010 by Brittany*

**H. Physics 11th grade**

while flying over the grand canyon, the pilot slows the plane down to one-half the velocity in item 3. If the wind's velocity is still 75 km/h toward the southeast, what will the plane's new resultant velocity be?

*Wednesday, September 29, 2010 by Abby*

**11th grade**

When Maggie applies the brakes of her car,the car slows uniformly from 15.4 m/s to 0m/s in 2.41 s.How far ahead of a stop sign must she apply her brakes in order to stop at the sign?Answer in units of m.

*Tuesday, September 21, 2010 by Taylor*

**11th grade**

When the shuttle bus comes to a sudden stop to avoid hitting a dog, it decelerates uniformly at 3.8 m/s2 as it slows from 8.8 m/s to 0 m/s. Find the time interval of acceleration for the bus. Answer in units of s.

*Tuesday, September 21, 2010 by Taylor*

**11th grade**

When Maggie applies the brakes of her car, the car slows uniformly from 15.4 m/s to 0 m/s in 2.41 s. How far ahead of a stop sign must she apply her brakes in order to stop at the sign? Answer in units of m.

*Monday, September 20, 2010 by Taylor*

**11th grade**

When the shuttle bus comes to a sudden stop to avoid hitting a dog, it decelerates uniformly at 3.8 m/s2 as it slows from 8.8 m/s to 0 m/s. Find the time interval of acceleration for the bus. Answer in units of s.

*Monday, September 20, 2010 by Taylor*

**11th grade**

Suppose you surveyed 50 students and 34 said that they approve of how the president is doing. Construct 90%, 95%, and 99% confidence intervals for the true proportion of students in your school who approve of how the president is doing. Be sure to specifically calculate the ...

*Sunday, September 12, 2010 by Charlie*

**11th grade**

The base of a pyramid is 10 cm high is the triangle shown. Find the volume of the pyramid. The hieght/leg of the traingle is 4 the base/leg is 6 and the hypothnues is 7.21

*Sunday, September 5, 2010 by Ali*

**11th grade**

While driving his sports car at 20.0 down a four lane highway Eddie comes up behind a slow-moving dump truck abd decides to pass it in the left lane. If Eddie can accelerate at 5.00 m/s^2, how long will it take for him to reach a speed of 30.0 m/s?

*Wednesday, September 1, 2010 by SH*

**11th grade**

the measure of an angle is 8 degrees less than 3 times the measure of the angle's supplement. find the measure of each angle

*Monday, August 30, 2010 by taylor*

**11th grade cytology**

It is a biological fact that a human being can live without food for a number of weeks. However, if deprived of water, a human being will die in approximately three days. Explain the large difference in time between these two facts.

*Friday, August 27, 2010 by icha*

**11th grade Chemistry 1**

If your weight is 120 pounds and your mass is 54 kilograms, how would those values change if you were on the moon? The gravitational force on the moon is 1/6 the gravitational force on Earth.

*Tuesday, August 24, 2010 by Megan*

**11th grade**

in the distance you see an arch 192m. you estimate your line of sight with the top of the arch to be 8.4 degrees above the horizontal. appox how far in kilometers are you from the base of the arch?

*Sunday, August 22, 2010 by gabe*

**12th grade maths**

how to present math in different angles which represents depth of subject,easiness,empowerment,basics,logic,analyze,view of subject from back,view from front.Give multiple e.g.s .(just 11th & 12th)

*Friday, August 20, 2010 by R_t*

**12th grade maths**

how to present math in different angles which represents depth of subject,easiness,empowerment,basics,logic,analyze,view of subject from back,view from front.Give multiple e.g.s .(just 11th & 12th)

*Friday, August 20, 2010 by R_t*

**11th Grade Physics**

The maximum speed of a bus is 72km/h, it accelerates uniformly at the rate of 1m/s^2 and retards uniformly at the rate of 4m/s^2. Find the least time in which it can do a journey of 1km ?

*Tuesday, July 27, 2010 by Praveen*

**11th grade Physics**

Difference between Atomic spectrum and emission spectrum. First give me the clear cut definition of both and then the difference!!!

*Saturday, July 24, 2010 by Akashdeep Singh*

**11th Grade Physics**

A rocket is fired vertically from the ground with a resultant vertical acceleration of 10ms^-2. The fuel is finished in 1 minute and it continues to move up. What is the maximum height reached? Solve it!!! N Please solve it as i've to copy it in my correction notebook it's my ...

*Thursday, July 22, 2010 by Akashdeep Singh*

**Grade 11th Maths**

(Second time posting this problem)This problem is related to Chapter-Sets. Please solve the question using x method. x method means x ∈ A ∩ B Q. If A⊂B, then prove that B'⊂A'

*Sunday, July 4, 2010 by Akashdeep Singh*

**Grade 11th Maths**

(Second Time posting this problem)This problem is related to Chapter-Sets. Please solve the question using x method. x method means x ∈ A ∩ B Q. If A-B=A then show that A∩B=Ø

*Sunday, July 4, 2010 by Akashdeep Singh*

**Grade 11th Maths**

(Second time posting this problem)This problem is related to Chapter-Sets. Please solve the question using x method. x method means x ∈ A ∩ B Q. If AUB=Ø, then prove that A=Ø,B=Ø

*Sunday, July 4, 2010 by Akashdeep Singh*

**Grade 11th Maths**

This problem is related to Chapter-Sets. Please solve the question using x method. x method means x ∈ A ∩ B Q. If A-B=A then show that A∩B=Ø

*Tuesday, June 29, 2010 by Akash*

**Grade 11th Maths**

This problem is related to Chapter-Sets. Please solve the question using x method. x method means x ∈ A ∩ B Q. If A⊂B, then prove that B'⊂A'

*Tuesday, June 29, 2010 by Akash*

**math 11th grade**

If a man runs for an hour and a half at 8 miles an hour due south; and then he continues south on a bus traveling at 55 miles an hour, for 24 minutes. How far did he travel?

*Saturday, June 26, 2010 by Louise*

**11th Grade Physics**

I want two examples based upon law of conservation of charge i know the definition just want two examples!!!

*Friday, June 25, 2010 by Akash*

**Physics 11th grade**

A) What is the intensity of sound at 148 dB? Units: W/m^2. I found this to be 630.9573445 using Io*10^B/10 in which B= 148 dB. B)Compare it to that of a whisper at 20 dB. Using the same formula i find this to be 1e-8 but it is marked as wrong. Please help with B!

*Friday, May 21, 2010 by Luricela*

**11th grade English**

Write your own journal entry from the perspective of a member of Bradford's colony. What do you think of these unruly pirates? What shocks you the most about these surly characters? How do the manners of the pirates differ from yours?

*Sunday, May 16, 2010 by Smith*

**11th grade Physics**

A student makes a magnet by winding wire around a nail and connecting the wire to a battery. Which end of the nail will be the north pole?

*Wednesday, May 5, 2010 by David Nipp*

**11th grade**

The latent heat of vaporization of water is 540 calories/gram. How many calories are required to completely vaporize 500 grams of water?

*Tuesday, May 4, 2010 by katlyn*

**Chemistry 11th Grade**

Nitrogen forms five compounds with oxygen in which 1.0 g of nitrogen combines with 0.572,1.14,1.73,2.28 and 2.85 g of oxygen respectively. Show that these figures agree with law of multiple proportion.

*Monday, May 3, 2010 by Akashdeep*

**11th Grade Chemistry**

The freezing point of an aqueous solution that contains a non-electrolyte is -9.0 degrees celcious. A. What is the freezing-point depression of the solution? B. What is the molal concentration of the solution?

*Tuesday, April 27, 2010 by Taylor*

**11th grade Social Studies**

I was wondering what three thought provoking, open discussions could be that is related to President Wilson's 14 points and World War I might be? Do you have any ideas what I could do? My teacher is asking us, because the questions we write will be used for a test in two weeks.

*Tuesday, April 20, 2010 by Dana*

**Physics 11th Grade**

A foam ball of a mass of 0.150 g carries a charge of -2.00 nC. The ball is in a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

*Thursday, April 15, 2010 by Adam*

**11th grade**

a spring with a spring constant of 4 newtons per meter is compressed by a force of 1.2 newtons. what is the total elastic potential energy stored in this compressed spring

*Tuesday, April 13, 2010 by Anonymous*

**11th grade**

A wire 28 cm long is parallel to a 0.36 T uniform magnetic field. The current through the wire is 4.5 A. What force acts on the wire? What equation do you use?

*Tuesday, March 23, 2010 by Physics*

**11th grade**

a 45kilo roller-blader accelerates from rest to 4.5ms-1 in 3.0seconds. calculate the force requied by the roller-blader, if there are opposing friction forces of 40N acting? include a lbelled vector diagram in your answer.

*Sunday, March 21, 2010 by Anonymous*

**11th grade**

200 ml of a gas at 27oC and 1140 Pa pressure is transferred to a vessel of 450 ml capacity. What temperature is to be applied, if the pressure applied is 2000 Pa?

*Friday, March 19, 2010 by Silva*

**11th grade**

200 ml of a gas at 27oC and 1140 Pa pressure is transferred to a vessel of 450 ml capacity. What temperature is to be applied, if the pressure applied is 2000 Pa?

*Friday, March 19, 2010 by Silva*

**Physics-11th grade**

Two students on roller skates stand face-to-face, then push each other away. One student has a mass of 94 kg, the other 65 kg. Find the ratio of the velocities just after the hands lose contact.

*Saturday, March 13, 2010 by Luricela*

**11th grade**

(a) What is the minimum work needed to push a 1150 kg car 240 m up a 17.5° incline with zero friction? (b) What is the minimum work needed if the effective coefficient of friction is 0.20?

*Saturday, February 13, 2010 by Luricela*

**11th grade**

Base your answers to the following questions using the diagram. The diagram represents R₁ and R₂ connected to constant power source of 40V. A₁, A₂, and A₃ represent ammeters.Find: A1: R1: potential difference:

*Wednesday, January 20, 2010 by Amy*

**11th grade**

log[3](7x-3)>=log[3](5x)

*Thursday, January 14, 2010 by alex*

**11th grade**

I need to find an example of Inversion/abnormal word order in either "The Crisis" by Thomas Paine, "The Declaration of Independence" or "The Death of a Salesman" and am having trouble understnading what to look for in the readings. Any help?

*Monday, December 28, 2009 by Joan*

**11th grade-Logs**

log x = 1/2 (log a + Log b - log c) express x in terms of a,b,and c.

*Monday, December 21, 2009 by Jess*

**11th grade**

Write your own journal entry from the perspective of a member of Bradford's colony. What do you think of these unruly pirates? What shocks you the most about these surly characters? How do the manners of the pirates differ from yours?

*Tuesday, December 8, 2009 by regerrica*

**11th grade**

I want to send path help an actual photo I took that's attached onto the e-mail. I can't do that on that website. Is there another website where I can e-mail a teacher a photo?

*Sunday, November 8, 2009 by AL 87*

**11th grade**

Hello there i am writing a book and i would like to know how many subjects does an eleventh grader have per day. please reply as soon as possible. thank you very much. P.S: This question is meant to be answered by an american individual due to various reasons.

*Friday, November 6, 2009 by LAra*

**11th grade Physical Science**

How fast must a 1,000 kg car be moving to have a kinetic energy of: (a) 2.0 x 10^3, (b) 2.0 x 10^5, (c) 1.0 kW x h? How high would you have to lift a 1,000 kg car to give it a potential energy of: (a) 2.0 x 10^3, (b) 2.0 x 10^5, (c) 1.0 kW x h?

*Monday, November 2, 2009 by britney*

**11th grade**

The price of a sweater is $5 less than teice the price of a shirt. if four sweaters and three shirts cost $200, find the price of each shirt and each sweater.

*Wednesday, October 28, 2009 by Matt*

**11th grade Physics**

Two children playing on the beach are pulling on an inner tube. One exerts a force of 45 N [N]. The other exerts a force of 60 N [SW]. What is the net force acting on the tube?

*Wednesday, October 7, 2009 by Molly*

**11th grade**

if a container starts with 60 liters and the 1st hour it has half the liters and the 2nd hour it has 1/3, how long before there are 10 liters?

*Thursday, September 24, 2009 by nady*

**11th grade**

Write your own journal entry from the perspective of a member of Bradford's colony. What do you think of these unruly pirates? What shocks you the most about these surly characters? How do the manners of the pirates differ from yours?

*Tuesday, September 22, 2009 by lala*

**11th grade-english III**

Write your own journal entry from the perspective of a member of Bradford's colony. What do you think of these unruly pirates? What shocks you the most about these surly characters? How do the manners of the pirates differ from yours?

*Thursday, August 27, 2009 by Anna*

**11th grade**

Hi I am looking for sample travel brochure (made with Publisher or the like) of a spanish speaking country. I have the assignment of writing a trip itenerary to a spanish speaking country and I feel like an example would help lead the way.

*Monday, May 18, 2009 by Mike*

**11th grade English**

Can someone please help me with the topics for a research paper. It needs to be based on some medical issues. This is the first time I am writing a research paper. please help me with a topic. Please!!!!

*Friday, April 3, 2009 by Anonymous*

**11th grade Chemistry**

[mole-mole] How many moles of NaOH are needed to react with 5.0 moles of sulfuric acid, H2SO4??? Equation: H2SO4 + 2 NaOH ---> Na2 SO4 +2 H2 O

*Monday, March 30, 2009 by Jenny*

**11th grade: Physics**

For each pair of frequencies below, calculate the ratio of their frequencies as a simple fraction, then determine which pair has the higher dissonance. a) 261.6 Hz and 392 Hz b) 349.2 Hz and 392 Hz I just don't know how to make these into simple fractions. Please help me

*Sunday, December 14, 2008 by Lizzie*

**11th grade:AP Biology**

This is concerning Ecology. Question: You turn on a light and observe cockroaches scurrying to dark hiding places. What have you observed? A. taxis B. learned behavior C. migration D. visual communication E. operant conditioning I have already crossed out migration; however, I...

*Wednesday, December 3, 2008 by Matt*

**11th grade**

in lines 17-30, what does nature say will happen to the reader? why will the reader no be alone? In your words, how would you describe what nature says in lines 31-72

*Monday, November 24, 2008 by zach johnson*

**11th grade**

a particle starts at time t=0 and moves on a number line so that its position at time t is given by x(t)= (t-2)^3(t-6) what is the farthest to the left of the origin that the particles moves?? i was able to find the velocity and acceleration formula. but i have no idea how to ...

*Sunday, November 23, 2008 by stephanie*

**11th grade**

A uniform plank of length 6.0 m and weight 231 N rests horizontally on two supports, with 1.1 m of the plank hanging over the right support (see the drawing). To what distance x can a person who weighs 451 N walk on the overhanging part of the plank before it just begins to tip?

*Saturday, November 8, 2008 by Cindy*

**11th Grade-Calc**

cylindrical can is to be made from a rectangular piece of aluminum that is 25 inches long and 10inches high by rolling the metal horizontally. Determine the circumference of the cylinder, the radius of the cylinder, the height of the cylinder, and the volume of the cylinder

*Saturday, November 8, 2008 by Kelley*

**11th grade**

what is difference between blending patterns of inheritance and particulate patterns of inheritance?

*Sunday, November 2, 2008 by andrew*

**11th grade physics**

my physics teacher asked the class to find a cool physics topic and write a summary and a reflection on it 1page.... any ideas im really stuck

*Sunday, October 5, 2008 by JESSICA!!!!!!!!!!!!!!!!!*

**american history**

ok im doing a crossword puzzle on the constitution info...i'm doing 11th grade history and i just need 2 answers left... the 1sr is , powers of both the state and federal governments (but the third letter is s) ..2nd is and anti federalist (during the constitution time)

*Sunday, October 5, 2008 by gaby*

**11th Grade**

I have a math problem on conics and I am not sure what to do? Workers are designing a TV receiving dish in the shape of a paraboloid of a revolution, the factory sent them a paraboloid that is ten feet across at the opening and three feet deep. What is the best place the ...

*Sunday, September 28, 2008 by sam*

**Science Fair**

My school has a Science Fair coming up and I would really like to win this year with an impressive EXPERIMENT! Any suggestions? I am in 11th grade.

*Tuesday, September 23, 2008 by Rhondi*

**11th grade**

Rewrite the following sentence using the beginning word.( Had they realized how difficult it was to climb the mountain, they would have lost courage.) Now begin this sentence with (If) Thank you

*Tuesday, September 23, 2008 by Rhondi*

**MORE OPINIONS NEEDED PLEASE!!**

FOR HISTORY WE HAVE TO CONDUCT A SURVERY FROM PEOPLE CONCERNING 9/11. THERE ARE ONLY TWO QUESTIONS THAT ARE ASKED. QUESTION 1:WHY DO YOU THINK SEPT. 11TH HAPPENED? QUESTION 2: HOW DO YOU THINK WE CAN PREVENT ANOTHER SEPTEMBER 11TH FROM HAPPENING? YOUR ANSWERS ARE GREATLY ...

*Saturday, September 6, 2008 by SENiOR '09*

**12TH HISTORY**

FOR HISTORY WE HAVE TO CONDUCT A SURVERY FROM PEOPLE CONCERNING 9/11. THERE ARE ONLY TWO QUESTIONS THAT ARE ASKED. QUESTION 1:WHY DO YOU THINK SEPT. 11TH HAPPENED? QUESTION 2: HOW DO YOU THINK WE CAN PREVENT ANOTHER SEPTEMBER 11TH FROM HAPPENING? YOUR ANSWERS ARE GREATLY ...

*Saturday, September 6, 2008 by SENiOR '09*

**Math**

In Simplifying 7 to the 11th power and 7 to the 9th power, Alexis decides to use her calculator to find 7 to the 11th power and 7 to the 9th power indiviually before dividing. Show how Alexis could use the laws of exponents to arrive at the answer more easily.

*Monday, January 28, 2008 by Anonymous*

**Science 11th grade**

In an ionic compound, what is the net ionic charge? and what compound does an -ide ending generally indicate?

*Tuesday, January 9, 2007 by Jeff*

**math& english**

if there is any chance that someone could help me with math or english over messenger i am far behind in those subjects and totaly lost in algebra1 my SNs are babeangel747 for both thanks in advance what grade are you in? 9th and 10 i should be in 11th

*Friday, August 11, 2006 by cassii*

**11th grade chemistry**

The bottled butane gas is installed in an oven that can supply 0.125 g/hr .In a kitchen room of volume 32 m^3 (volume of air), the oven is made to operate for 2 hours. Assuming the kitchen room is closed, what is the mole composition of the atmosphere in the kitchen when ...

*Wednesday, March 2, 2016 by angy*

**medical Terminology**

The most easily treated tumor is A. Grade I. B. Grade V. C. Grade III. D. Grade X. A is my answer

*Sunday, February 28, 2016 by debbie*

**algebra**

An “A” is considered 4.0, a “B” is 3.0, a “C” is 2.0, a “D” is 1.0, and an “F” is 0. In your first semester you received the following grades. Calculate your grade point average English = credits 3.0 Grade = C Biology = credits 4.0 Grade = B Communications...

*Tuesday, September 22, 2015 by Kristen*

**math**

I have a question I would really appreciate the answer. If 15% of my grade is 74% and 96 is 15% of my grade and 40% of my grade is a 60.5% without the final counting for 30% what is my grade? Please help thank you.

*Friday, June 26, 2015 by kim*

**Math**

Which is the best way to obtain a random sample when surveying a high school with 800 students about what to serve in the cafeteria. A.Only ask the 11th grade class. B.Draw a list of 50 students from a bowl with every student's name in it. C.Ask everyone who takes French class...

*Wednesday, June 24, 2015 by Anonymous*

**MATH**

there are 400 students at smith Elementary school 1/4 of the students are in fourth and fifth grade, 1/10 of the students are in grade 3, 2/8 are in second grade and 2/5 are in first grade . How many kids are in each grade? (4th and 5th have an equal amount)

*Monday, March 24, 2014 by MANISH*

**Proctology**

Hi, I am an 11th grade student beginning to look into some college options. I am interested in pursuing a career in proctology and have been reading some preliminary books on the topic. Can anyone recommend a college or pre-med program that would offer a strong proctology ...

*Monday, March 25, 2013 by Greg*

**statistics**

The grades on the final examination given in a large organic chemistry class are normally distributed with a mean of 72 and a standard deviation of 8. The instructor of this class wants to assign an “A” grade to the top 10% of the scores, a “B” grade to the next 10% of...

*Sunday, March 24, 2013 by Sarah*

**Physics 11th grade 3**

1) A box with a mass of 17 kg is moving at a velocity of 3.75 m/s. If the box was pushed with a force of 75 N how far did it go? 2) Calculate the momentum for a 0.18 kg rifle bullet traveling 369 m/s. 3) What is the impulse needed to stop the bullet? 4)Ice has a specific heat ...

*Tuesday, March 12, 2013 by Isis*

**englsih writing tips**

So I really want my writing to improve. My teacher is extremely critical on people's writing. I know this is to help us but I feel incredibly stupid when she covers my paper with harsh comments. I just want her to like something in my writing. I feel like I have no potential. ...

*Wednesday, October 31, 2012 by Carrie*

**11th grade math**

A farmer wants to fence in 60 000m^2 of land in a rectangular field along a straight road. The fencing that he plans to use along the road is $10 per meter and the fencing that he plans to use for the other three sides costs $5 per meter. a) How much of each type of fence ...

*Sunday, March 25, 2012 by jenna*

**Math Lit**

In a school there are 122 grade 8s, 105 grade 9s, 134 grade 10s, 109 grade 11s, 90 grade 12s. Express Each Class as a percentage of the whole school.

*Sunday, February 5, 2012 by Thabo*

**Summer Session Question**

If I get accepted to Yale Summer Session will this also help me get to Yale????? yes or no Plus how to get accepted to this summer program?????? btw I'm taking this during the summer after 11th grade

*Saturday, December 10, 2011 by Laruen*

**11th grade english**

I am supposed to state how the italicized noun clause is used, but I'm not sure how to tell the difference.. can anyone help? 1. [What I wanted to do] was to finish my work. S <---- i was thinking subject? OP PN or DO? 2. The valedictory prize will be awarded to [whoever ...

*Friday, December 9, 2011 by Amy*

**math 11TH**

3X+2Y=

*Tuesday, October 18, 2011 by QADEER*

**math 11th**

3/(x+4)+5/(x-2)

*Wednesday, August 24, 2011 by kim*

**Friction and Charge (Physics Pre-AP 11th Grade)**

When a fuel truck is moving, the friction between the truck tires and the road causes charge to build up. This is an example of charging by conduction. a. Explain why the build up of charge is a hazard. b. What can be done to prevent the hazard that would otherwise be produced...

*Friday, February 25, 2011 by Angela*

**Value of a Charge of a Body (Physics 11th Grade)**

What is the value of a charge of a body that carries 20 excess electrons? I think that the question asks you to pretend that something is negatively charged by 20 electrons. So I think you take the charge of an electron, which is 1.6 x 10^-19, and multiply it by 20. If you do ...

*Friday, February 25, 2011 by Angela*

**11th grade**

Calculate the minimum change in velocity (delta V or ∆V) required for the Space Shuttle to decrease its altitude to 60 miles if it’s orbiting with an apogee of 236 miles and a perigee of 215 miles above the surface of Earth. Use the rule of thumb that below an altitude...

*Thursday, December 16, 2010 by Vanessa*

**11th grade**

A box of books weighing 229 N is shoved across the floor by a force of 420 N exerted downward at an angle of 35° below the horizontal.If µk between the box and the floor is 0.75, how long does it take to move the box 7 m, starting from rest? (If the box will not move, enter 0.)

*Sunday, December 5, 2010 by Bill*

**11th grade**

The curves on a race track are banked to make it easier for cars to go around the curves at high speed. Draw a free-body diagram of a car on a banked curve. From the motion diagram, find the direction of the acceleration (a) What exerts the force in the direction of the ...

*Tuesday, November 30, 2010 by max*

**11th grade**

Three different weights are suspended from three different springs. Each spring has an elasticity coefficient of 18.5. The equation for the vertical displacement is y= 1.5cosine(t times the square root of k/m), where t is time, k is the elasticity coefficient, and m is the ...

*Tuesday, November 16, 2010 by Matt*

**11th grade**

A 40-kg skater is standing still in front of a wall. By pushing against the wall she propels herself backward with a velocity of -1.8 m/s. Her hands are in contact with the wall for 0.80 s. Ignore friction and wind resistance. Find the magnitude and direction of the average ...

*Tuesday, November 16, 2010 by fgh*

**11th grade**

At a glassware factory, molten cobalt glass is poured into molds to make paperweights. Each mold is a rectanglar prism whose height is 3 inches greater than the length of each side of the square base. A machine pours 20 cubic inches of liquid glass into each mold. What are the...

*Monday, November 15, 2010 by Stephanie*