Friday

November 27, 2015
Total # Posts: 1,021

**Physical Science **

which waves have wavelengths longer than those of visible light? Give an example of how each kind of wave is used.
*September 5, 2013*

**Physical Science **

Which of the following does NOT show the law of conservation of mass? A. 24 g of Mg burn in 32 g O2 to produce 56 g of MgO. B. 24 mL of Mg burn in 32 mL O2 to produce 56 mL of MgO. C. 2 atoms of Mg react with 1 molecule of O2 to produce 2 units of MgO. D. 1 atom of Mg reacts ...
*August 27, 2013*

**Physical Science**

Which of the following statements about ice melting is true? A. Energy flows from the ice to its surroundings. B. Water molecules move from their fixed position. C. Water molecules lose energy. D. The temperature of the ice increases as it melts. I think it's C.
*August 27, 2013*

**Pyhsical Science**

Which of the following statements is true about scientific theories? A. Scientific theories become scientific laws. B. Scientific theories are never proven. C. Scientific theories become hypotheses. D. Scientific theories summarize patterns found in nature. I think it's B.
*August 27, 2013*

**Pyhsical Science**

What is a system of knowledge and the methods used to find that knowledge? A. science B. technology C. measurement D. curiosity I think it's D.
*August 27, 2013*

**Health**

What is an example of impulsive and often dangerous behaviors that people with borderline personality disorder have a tendency to display? A. Driving recklessly B. Binge eating C. Engaging in unsafe sex D. All of the above I think it's D.
*August 22, 2013*

**Health**

The difference between dysthymic disorder and major depressive disorder is that ________. A. Symptoms of dysthymic disorder are usually less severe than those of major depression B. Symptoms of dysthymic disorder are usually shorter than those of major depression C. Symptoms ...
*August 22, 2013*

**Health**

What is stress management? A. Controlling and reducing the tension that occurs in stressful situations B. Controlling and reducing the tension that occurs in peaceful situations C. Controlling and reducing the happiness that occurs in peaceful situations D. Controlling and ...
*August 22, 2013*

**Health**

What is an example of having a poor diet? A. Making unhealthy food choices B. Not eating enough C. Not eating on a normal schedule D. All of the above I think it's D.
*August 22, 2013*

**Health**

Imagining potential negative big events is one way that a person can manage his or her stress. To help with this, one should ________. A. Be confident B. Relax with deep breathing C. Think positively D. Have a back-up plan I think it's B.
*August 22, 2013*

**Health**

What can long-term stress cause? A. Abnormal heart beats B. Acne C. Obesity D. All of the above I think it's D.
*August 22, 2013*

**Health**

It's B.
*August 22, 2013*

**Health**

Physical signs of stress typically include ________. A. Stomach growling B. Tense muscles C. Tickling sensation D. All of the above I think it's D.
*August 22, 2013*

**Statistics**

A simple random sample of cars in a city was categorized according to fuel type and place of manufacture. domestic foreign gasoline 146 191 diesel 18 26 gasoline/ 51 79 electricity hybrid 1. If the two variables were independent, the expected number of foreign gas/electric ...
*August 21, 2013*

**Statistics**

According to a genetics model, plants of a particular species occur in the categories A, B, C, and D, in the ratio 9:3:3:1. The categories of different plants are mutually independent. At a lab that grows these plants, 218 are in Category A, 69 in Category B, 84 in Category C...
*August 21, 2013*

**Health**

For adults, which ranges below reflect an accurate BMI category? A. If your BMI is less than 18.5, it falls within the obese category B. If your BMI is 25-29.9, it falls within the underweight category C. If your BMI is 30 or higher, it falls within the overweight category D. ...
*August 21, 2013*

**Health**

Thank you.
*August 21, 2013*

**Health**

How do you lose weight? A. By using up less calories than you take in B. By using up more money on diet programs and pills C. By using up less energy than you take in D. By using up more calories than you take in I think it's D.
*August 21, 2013*

**Health**

Thank you.
*August 21, 2013*

**Health**

Why are many fad diets considered unhealthy? A. Because they may not provide all of the nutrients your body needs B. Because they often promise quick weight loss C. Because people typically find it difficult to keep lost weight off D. All of the above D?
*August 21, 2013*

**Science**

A train starts from rest and accelerates uniformly, until it has traveled 3000 m and acquired a velocity of 24 m/s. The train then moves a constant velocity of 24 m/s for 430 s. The train then decelerates uniformly at 0.065 m/s², until it is brought to a halt. 1. In ...
*August 21, 2013*

**teasley middle school**

Equations
*August 12, 2013*

**math**

Solve the equations .Then answer the riddle.
*July 9, 2013*

**math**

a bicycle wheel has a radius of 3 feet. what is the closest estimate of the distance of 4 full rotations of the wheel
*June 3, 2013*

**MATH HELP**

Suppose two sets of data, A and B, have the same MIN and MAX values, but that the IQR for A is larger than the IQR for B. What can you CORRECTLY conclude about the two sets?
*May 17, 2013*

**math**

help! 2005 2006 2007 2008 Plant 1 20 4 25 10 Plant 2 25 5 5 48 Plant 3 20 8 20 32 Plant 4 43 10 10 47 Plant 5 40 11 15 48 A gardener recorded how many tomatoes 5 plants produced each year. Which year had the LARGEST interquartile range of tomatoes produced?
*May 17, 2013*

**math**

Mark flips a coin twice. How many outcomes are in the sample space
*May 16, 2013*

**math**

There are 4 different colored candies in a bag. So, one should have a 25% chance of picking a particular color out of the bag. After pulling out 20 candies, Sally got 8 purples, which is 40%. Predict what will happen as Sally pulls out more candies.
*May 16, 2013*

**math **

robin tosses two number cubes 100 times and get a pair of threes 18 times. what is the experimental probability that she will roll a pair of threes on her next toss?
*May 16, 2013*

**math**

Mrs little create a box plot for the test scores on her latest math test. she finds that the interquartile range is 20 points. what is the Mean?
*May 16, 2013*

**math**

if you have a bag of chocolate candy, ten are red, 7 are brown, 12 are green, and 9 are blue, what is the probability of you picking a red candy given that you already picked a blue candy and have not replaced it?
*May 16, 2013*

**math**

2 dices are rolled. which outcome has the lowest probability of occurring?
*May 16, 2013*

**Math**

Mr miller teaches a class with 15 boys and 5 girls. if he randomly chooses a student from the class, what is the probability that the chosen student is not a boy?
*May 16, 2013*

**Life orientation**

Ways in which smoking impacts on your community
*May 12, 2013*

**math**

I tried this problem and got approximately 35.8 mph and 12.9 degrees south of west. I hope this is right.
*April 29, 2013*

**Physics**

A light ray traveling through air strikes a smooth, flat slab of crown glass at an angle of 30 degrees to normal. Index of refraction for crown glass is 1.66. What is the angle of refraction?
*April 22, 2013*

**Calculus**

An animal population is increasing at a rate of 150+20t animals per year. By how much does the animal population increase between year 5 and year 8?
*April 17, 2013*

**math**

The answer is 20 because one equals 10 and since there are two multiply 10*2 which will equal 20 or just add 10+10 which equals 20.
*April 16, 2013*

**Physics 1**

A mass m1 = 4.9 kg rests on a frictionless table and connected by a massless string over a massless pulley to another mass m2 = 4.7 kg which hangs freely from the string. When released, the hanging mass falls a distance d = 0.8 m.
*April 5, 2013*

**science**

if aluminum has the density of 2.7g what would the mass be?
*April 4, 2013*

**Physics**

At the train station, you notice a large horizontal spring at the end of the track where the train comes in. This is a safety device to stop the train so that it will not plow through the station if the engineer misjudges the stopping distance. While waiting, you wonder what ...
*March 26, 2013*

**Physics**

At the State Fair you see people trying to win a prize at a game booth. They are sliding a metal disk shaped like a puck up a wooden ramp so that it stops in a marked zone near the top of the ramp before sliding back down. You estimate that you can slide the 'puck' at ...
*March 26, 2013*

**Physics**

The Navy wants a new airplane launcher for their aircraft carriers that is basically a large spring and your job is to determine the necessary spring constant. The launcher pushes the plane for a short distance along a much longer runway. During that same time, the plane's...
*March 26, 2013*

**Physics**

Your artist friend's new work is a simple, high-impact kinetic sculpture called 'Destruction.' A 200-kg steel block is hung from the ceiling by an 8-foot-long rope. A second rope is attached to the side of the block. The other end of this second rope is attached to...
*March 26, 2013*

**physics**

As part of a fundraiser, you want the new dean to bungee jump from a crane. The jump will be made from 44 m above a 2.5 m deep pool of Jello. A 30 m long bungee cord would be attached to the dean's ankle. You must convince the dean that your plan is safe for a person of ...
*March 26, 2013*

**physics**

A 2.6-kg particle moving along the x axis has a velocity of +1.7 m/s as it passes through the origin. It is subjected to a single force, Fx, that varies with position, as shown below.
*March 26, 2013*

**PHYSICS**

Efinal= 1/2mvi^2+fd
*March 26, 2013*

**Dynamics**

The 10 kg block shown is released from rest on the horizontal surface at point B, where the spring has been stretched a distance of 0.5 m from its neutral position A. The coefficient of kinetic friction between the block and the plane is 0.30. Calculate (a) the velocity v of ...
*March 24, 2013*

**writing**

NEED HELP WITH ANALOGIES PLEASEEEEEE DESCENDANT:ANCESTORS
*March 21, 2013*

**science**

How do organs relate to cells and tissues?
*March 20, 2013*

**Math**

The median score on attest is 90. Is it possible to add two or more scores to the data and still have a median score of 90? Explain
*March 14, 2013*

**physics**

A concave shaving mirror has a radius of curvature of 28.0 cm. For each of the following cases, find the magnification and determine whether the image formed is real or virtual and upright or inverted. (a) an upright pencil placed 41.6 cm from the mirror. (b) an upright pencil...
*March 12, 2013*

**physics**

A convex mirror with a radius of curvature of 34.0 cm forms a 0.95 cm tall image of a pencil at a distance of 12.5 cm behind the mirror. Calculate the object distance for the pencil and its height. Is the image real or virtual? What is the magnification?
*March 12, 2013*

**Math**

A plane flys 425 miles with the wind and 350 miles against the wind in the same length of time if the speed of the wind is 15 mph what is the speed of the plane
*March 8, 2013*

**english 11**

what were the rest of the answers
*February 13, 2013*

**combustion**

A glass melting furnace is burning ethene in pure oxygen (not air). The furnace operates at an equivalence ratio of 0.9 and consumes 30 kmol/hr of ethene. Determine the energy input rate based on the LHV of the fuel in terms of kW. •Determine O2 consumption rate in kmol/hr.
*January 30, 2013*

**Math**

2- digit number. There are nine tens. The sum of its digits is 12. What is the number?
*January 22, 2013*

**Science**

Compare how much kinetic energy and potential energy the ball has at each point and describe why the ball has that energy
*January 17, 2013*

**math 6th grade**

Well, a cube is like a square. The only different with them is that a cube is 3D while a square is flat. On a square, each side is the same length. So, on a cube if one side is 1/6, then all of the sides have to be 1/6. A cube has 6 sides, yes? ANSWER: 1/6 is the simplest form.
*January 15, 2013*

**Math 7**

Suppose you copy a drawing of a polygon with the given size factor. How will the side lengths, angle measures, and perimeter of the image compare to those of the original? A.) 200% B.) 150% C.) 50% D.) 75%
*January 15, 2013*

**Math**

Thank you
*January 9, 2013*

**Math**

My son homework does not have 107 number it only goes up to 100
*January 9, 2013*

**Math**

What number is 3 tens more than 77?
*January 9, 2013*

**Math**

What number is 4 tens more than 26.?
*January 9, 2013*

**health**

It's A
*January 2, 2013*

**Health**

It's C
*December 30, 2012*

**math**

45 miles = ? feet _______ __________ 1 hour 1 second what is the feet ?
*December 30, 2012*

**math**

Z =Variable - Mean/ Standard deviation Z =71-73/8 Z =-2/8 Z = -0.25 Z value -.25 = .401294 To find higher than 71 1 - .401294 = 0.5987 59.87 % will get a score higher than 71 on this exam.
*December 26, 2012*

**English**

Corrections: 1. B: Feast of Lupercalia 2. A: Class Conflict 3. D: The Soothsayer 4. B: Caesar turning down a crown that Mark Antony is offering him 5. A: Cinna the Poet 6. C: Sending him unsigned letters 7. D: All of the above 8. B: Portia 9. B: she sees a statue of Caesar ...
*December 12, 2012*

**english 11**

What surprising action does Locust take at the end of the story? (1 point)He scratches on the eight ball. He shows up at the Lemon Tree Billiards House.*** He turns himself in to the local authorities. He sets Mitch up with his daughter. help? not sure if correct
*December 8, 2012*

**math**

estimate the percent of the number 17% of 23
*December 8, 2012*

**math**

on 3 tests you earned grades of 88%,94%,and 90%. Each test worth 150 points. The finalo exam is worth 250 points. How many points do you need on the final exam to earn 93% of the total points on tests? What percent do you need on the final?
*December 5, 2012*

**math**

on 3 tests you earned grades of 88%,94%,and 90%. Each test was worth 150points. The final exam is worth 250 points. How many points do u need on the final exam to earn 93% of the total points on tests? What percent do you need on the final?
*December 4, 2012*

**math**

A building 65 feet tall casts a shadow 175 feet long. Ben casts a shadow 14 feet long. How tall is Ben?
*December 3, 2012*

**Econ**

If a pure monopolist can price discriminate by separating buyers into two or more groups: A.the marginal revenue curve and the total revenue curve will now coincide. B.the marginal revenue curve will now shift to a position above the demand curve. C.the firm will face multiple...
*November 30, 2012*

**Math**

x = 3, 10, 5, 8, _, 12, _ y = 7, 21, _, _, 5, _, _
*November 27, 2012*

**Math**

x = 3, 10, 5, 8, _, 12, _ y = 7, 10, _, _, 5, _, _
*November 27, 2012*

**physics**

An open-topped tank completely filled with water has a release valve near its bottom. The valve is h = 1.9 m below the water surface. Water is released from the valve to power a turbine, which generates electricity. The area of the top of the tank, A_T, is 38 times the cross-...
*November 27, 2012*

**physics**

A 74.0 kg ice skater moving to the right with a velocity of 2.58 m/s throws a 0.18 kg snowball to the right with a velocity of 24.4 m/s relative to the ground. (a) What is the velocity of the ice skater after throwing the snowball? Disregard the friction between the skates and...
*November 8, 2012*

**physics**

Two carts with masses of 4.00 kg and 3.40 kg move toward each other on a frictionless track with speeds of 4.70 m/s and 3.56 m/s respectively. The carts stick together after colliding head-on. Find the final speed.
*November 8, 2012*

**physics**

A 2.7 kg ball strikes a wall with a velocity of 7.8 m/s to the left. The ball bounces off with a velocity of 6.6 m/s to the right. If the ball is in contact with the wall for 0.19 s, what is the constant force exerted on the ball by the wall?
*November 8, 2012*

**physics**

A 74.0 kg ice skater moving to the right with a velocity of 2.58 m/s throws a 0.18 kg snowball to the right with a velocity of 24.4 m/s relative to the ground. (a) What is the velocity of the ice skater after throwing the snowball? Disregard the friction between the skates and...
*November 8, 2012*

**Pre calc**

A set of 500 values has a normal distribution. The mean of the data is 24 and the standard deviation is 2. Find the range about the mean which includes 50% of the data.
*November 4, 2012*

**Chemistry**

298/-8.64=-34.49 298=273+20
*November 1, 2012*

**Chemistry**

i thought i did
*November 1, 2012*

**Chemistry**

(1.080)(-8)=(265)(P) -8.64=265P 265p/ -8.64= -30.67
*November 1, 2012*

**Chemistry**

A pressurized can of whipped cream has an internal pressure of 1.080 atm at 25°C. If it is placed in a freezer at -8°C, what is the new value for its internal pressure (in atmospheres)? I did this but got a negative number that wasnt correct
*November 1, 2012*

**Chemistry**

A pressurized can of whipped cream has an internal pressure of 1.080 atm at 25°C. If it is placed in a freezer at -8°C, what is the new value for its internal pressure (in atmospheres)? So i tried (1.080)(-8)=(P)(265) and I got -30.67 but its no correct. What am I ...
*November 1, 2012*

**Chemistry**

So i tried (1.080)(-8)=(P)(265) and I got -30.67 but its no correct. What am I doing wrong?
*November 1, 2012*

**Chemistry**

A pressurized can of whipped cream has an internal pressure of 1.080 atm at 25°C. If it is placed in a freezer at -8°C, what is the new value for its internal pressure (in atmospheres)?
*November 1, 2012*

**chemistry**

Consider a mixture of air and gasoline vapor in a cylinder with a piston. The original volume is 70. cm3. If the combustion of this mixture releases 885 J of energy, to what volume will the gases expand against a constant pressure of 645 torr if all the energy of combustion is...
*October 22, 2012*

**math**

Assuming the sequense... _,2,_,_,27/4 Is geometric find the missing terms and the formula for t(n)
*October 18, 2012*

**Math 6th Grade**

I have to create a double number line graph and im not sure if i'm doing it right? Jenny can make 10 flower arrangements in 5 minutes. How many arrangements can she make in 6 min? 4 1/2 min? 3 min?. What is the unite rate?
*October 17, 2012*

**physics need help please**

There are 7 charges, each with q = -5 nC distributed on a circle with radius R=3cm. The center of the circle is at the origin. The charges are at angles 0o, 45o, 90o, 135o, 180o, -90o, and -45o. (Note: A charge at -135o is missing.) a) What is the net electric field at the ...
*October 17, 2012*

**physics need help please**

There are 7 charges, each with q = -5 nC distributed on a circle with radius R=3cm. The center of the circle is at the origin. The charges are at angles 0o, 45o, 90o, 135o, 180o, -90o, and -45o. (Note: A charge at -135o is missing.) a) What is the net electric field at the ...
*October 17, 2012*

**health**

It's D: For at least 60 minutes each day or almost everyday.
*October 16, 2012*

**Physical Science**

3. (a) How much work is done in raising a 50.0 kg crate a distance of 3.5 m above a storeroom floor? (b) What is the change of potential energy as a result of this move? (c) How much kinetic energy will the crate have as it falls and hits the floor?
*October 11, 2012*

**7th grade math ASAP quick please**

I know It doesn't matter anymore but the answers are 1.|3.12 2.|10.9 3.|15 4.|27
*October 8, 2012*