Tuesday

July 28, 2015

July 28, 2015

Total # Posts: 518

**Physics**

Bats chirp at a high frequency which humans cannot hear. They use the echoes to detect small objects, such as insects, as small as one wavelength. If a bat were to emit a chirp at a frequency of 60.0 kHz and the speed of sound waves in the air are 340 m.s, what is the size in ...
*March 19, 2014*

**chemistry**

thank you!
*March 17, 2014*

**chemistry**

A laboratory instructor gives you a test tube containing Ag+ ,Ba 2+ , and Cu 2+ ions. Devise a reaction scheme that would allow you to selectively precipitate each of these ions. Write a balanced net ionic equation for each precipitation reaction.
*March 17, 2014*

**social studies**

Kyle you shouldnt just give the answers away they need to understand it and why it is that answer. 1. A. because in the western part of colombia you find the cool mountain ranges. 2. C. because a cordillears is very parallel and it has a 3 way mountain range that you can find ...
*March 17, 2014*

**college chemistry**

Copper(II) sulfide reacts with oxygen to produce copper (II) oxide plus sulfur dioxide. Suppose you start this reaction with 50.0 grams of copper(II) sulfide and 50.0 grams of oxygen and you actually produce 33.5 grams of copper(II) oxide. Calculate the percent yield for the ...
*March 5, 2014*

**chemistry**

Copper(II) sulfide reacts with oxygen to produce copper (II) oxide plus sulfur dioxide. Suppose you start this reaction with 50.0 grams of copper(II) sulfide and 50.0 grams of oxygen and you actually produce 33.5 grams of copper(II) oxide. Calculate the percent yield for the ...
*March 5, 2014*

**science**

Two forces of 5 N and 12 N respectivlely act on the same point. Show how to determine the magnitude of the resultant by using the tail to head and tail to tail methods and pythagoras theorem.
*February 22, 2014*

**civics**

In the Battle of _______, a disastrous charge against forces holding Cemetery Ridge led to Confederate defeat.
*February 20, 2014*

**Math**

Never mind, I figured it out myself!
*February 5, 2014*

**Math**

P.S. Double Bogey +2 Bogey +1 Par 0 Birdie −1 Eagle −2 (you might need this)
*February 5, 2014*

**Math**

I don't really understand this, could someone help me solve it? a) In her ﬁrst round as a professional golfer, Michelle Wie made 12 pars, 4 birdies, and 2 bogeys. Refer to the chart of golf terms on page 336. How many strokes above or below par was she that round? b...
*February 5, 2014*

**Math**

A) 1/4 B) 1.25 pounds C) 8 Ounces (oz)=1 pound,approx 1.6 or 1.7 pounds per bird feeders. See if you can figure this on your own
*February 5, 2014*

**computer Science**

17 You purchase a used optical drive from a second and store replace a single optical drive that has gone bad on your desktop. How would you set the jumper? a. Single b. Cable select c. Master d. Slave
*February 3, 2014*

**computer Science**

17 You purchase a used optical drive from a second and store replace a single optical drive that has gone bad on your desktop. How would you set the jumper? a. Single b. Cable select c. Master d. Slave
*February 3, 2014*

**computer Science**

14 Your brother is going to serve in the military overseas for four years and asks you about storing his computer in a public storage facility while he is away. The storage unit is not temperature controlled. What could be the negative impact of doing this? a. The internal ...
*February 3, 2014*

**computer Science**

14 Your brother is going to serve in the military overseas for four years and asks you about storing his computer in a public storage facility while he is away. The storage unit is not temperature controlled. What could be the negative impact of doing this? a. The internal ...
*February 3, 2014*

**Science**

and also how? (if it even does)
*February 2, 2014*

**Science**

Does foam prevent convection? If not, what does it prevent? (radiation and conduction)
*February 2, 2014*

**computer Science**

20 You are trying to boot your computer but your computer keeps displaying a message after the POST that says â€œ'invalid specificationâ€. What does the error mean?â€ a. an attempt to overclock the primary drive has failed...
*January 28, 2014*

**computer Science**

18 You started your new job as a PC tech and are at a customerâ€™s house. The computer has failed to boot. The fan is running but the POST fails every time. What is the best thing to do to possibly find quickly? a. Check the electrical outlet the computer is ...
*January 28, 2014*

**computer Science**

20 You are trying to boot your computer but your computer keeps displaying a message after the POST that says â€œ'invalid specificationâ€. What does the error mean?â€ a. an attempt to overclock the primary drive has failed...
*January 22, 2014*

**psychology**

20 You are trying to boot your computer but your computer keeps displaying a message after the POST that says â€œ'invalid specificationâ€. What does the error mean?â€ a. an attempt to overclock the primary drive has failed...
*January 22, 2014*

**Also in connexus**

THE OTHER CONNEXUS PERON IS RIGHT!@!!!
*January 20, 2014*

**Discrete Math**

A bag contains 5 red marbles, 4 yellow marbles, 3 green marbles, 2 orange marbles and 2 purple marbles. If three marbles are removed, what is the probability that at least one of them is red?
*January 19, 2014*

**Math**

Ignore this one, I accidently posted a second one
*January 12, 2014*

**Math**

How would you find the area of a shape shaped like a candy cane?
*January 12, 2014*

**Math, area**

Ok, thanks!
*January 12, 2014*

**Math, area**

one of those oval shaped, racecar/track and field tracks
*January 12, 2014*

**Math, area**

Along with this question, how would you find the area of the outer-part of a racing track?
*January 12, 2014*

**Math, area**

How would you find the area of a shape shaped like a candy cane?
*January 12, 2014*

**math**

5 quarters (1.25)+23 dimes(2.30)
*January 12, 2014*

**social studies**

I was wondering, what are some similarities between Hudson Bay Company and the Northwest Company
*January 7, 2014*

**math help please...**

1.You want to use the interval method to solve a rational inequality. Explain how to find the intervals. 2.Explain how the interval method works. 3.Explain in your own words what a reciprocal function is.
*January 6, 2014*

**thank u steve**

thanks
*January 6, 2014*

**someone help me fast please...**

someone do it fast please i need it tomorrow, please do it.
*January 6, 2014*

**math**

1.How is the maximum or minimum point of the original quadratic function related to the maximum or minimum point of its reciprocal function? 2.How can you use the leading coefficient of the original quadratic function to tell you whether its reciprocal will have a maximum or ...
*January 6, 2014*

**geometry**

what is the area of a hexagon with a base of 11m to the nearest whole number?
*January 3, 2014*

**math**

spencer morris works in the telemarketing division for a company that pays a salary of $735 per hour plus a commission of 3 1/2 of all sales greater than $15,500. if he sold $45,900 last month. what was his total gross pay? weggy
*December 27, 2013*

**statistics**

A student union wants to obtain a 90% confidence interval for the proportion of “full time” students who hold a part-time job for 20 hours or more per week. For this purpose, they want to interview a sample of full-time students. They want a margin of error to be at ...
*December 20, 2013*

**MATH Statistics**

A student union wants to obtain a 90% confidence interval for the proportion of “full time” students who hold a part-time job for 20 hours or more per week. For this purpose, they want to interview a sample of full-time students. They want a margin of error to be at ...
*December 20, 2013*

**statistics 3.**

A student union wants to obtain a 90% confidence interval for the proportion of “full time” students who hold a part-time job for 20 hours or more per week. For this purpose, they want to interview a sample of full-time students. They want a margin of error to be at ...
*December 17, 2013*

**statistics 4.**

The manufacturer of Porshe 918 Spyder car claims that their car can go from 0 mph to 60 mph speed in less than 2.5 seconds. To test this claim, a sample of 40 new cars of this type were driven and their average 0-60 mph time was 2.6 seconds with a standard deviation of 0.5 ...
*December 17, 2013*

**statistics 3.**

A student union wants to obtain a 90% confidence interval for the proportion of “full time” students who hold a part-time job for 20 hours or more per week. For this purpose, they want to interview a sample of full-time students. They want a margin of error to be at ...
*December 17, 2013*

**statistics 4.**

The manufacturer of Porshe 918 Spyder car claims that their car can go from 0 mph to 60 mph speed in less than 2.5 seconds. To test this claim, a sample of 40 new cars of this type were driven and their average 0-60 mph time was 2.6 seconds with a standard deviation of 0.5 ...
*December 17, 2013*

**Statistics 4**

The manufacturer of Porshe 918 Spyder car claims that their car can go from 0 mph to 60 mph speed in less than 2.5 seconds. To test this claim, a sample of 40 new cars of this type were driven and their average 0-60 mph time was 2.6 seconds with a standard deviation of 0.5 ...
*December 16, 2013*

**Statistics 3**

A student union wants to obtain a 90% confidence interval for the proportion of “full time” students who hold a part-time job for 20 hours or more per week. For this purpose, they want to interview a sample of full-time students. They want a margin of error to be at ...
*December 16, 2013*

**Statistics 2**

The body temperature of healthy human beings can be assumed to have a normal distribution with mean and standard deviation . Body temperature measurements taken from a sample of 130 healthy individuals shows the sample mean temperature to be 98.249O F and ...
*December 16, 2013*

**Statistics**

How would you check the Z table for the first problem?
*December 16, 2013*

**Statistics **

A manufacturing facility produces iron rods whose mean diameter is 2.5 inches with a standard deviation of 0.2 inch. If a sample of 50 metal rods produced by the facility were randomly selected, what is the probability that the mean of these rods will lie between 2.4 inches ...
*December 16, 2013*

**Psychology**

17 Albert Ellis depicts the relationship between irrational belief and negative emotions through use of: a. a contingence contract. b. dialectrical theory. c.the A-B-C model. d. observational learning.
*December 9, 2013*

**Psychology**

4 The big Five in personality theories refers to which of the following? a. a set of functional traits such as neuroticism and openness to experiences. b. the group of personality theorists who criticized Freud's theory as too sexual. c. The effect of positive ...
*November 22, 2013*

**Psychology**

1 In Psychology, the study of personality focuses on: a. change. b. stability. c. external factors. d. learning factors.
*November 22, 2013*

**Psychology**

4 The big Five in personality theories refers to which of the following? a. a set of functional traits such as neuroticism and openness to experiences. b. the group of personality theorists who criticized Freud's theory as too sexual. c. The effect of positive ...
*November 22, 2013*

**sychology**

2 Carl Jung's idea of the collective unconscious state that we share: a. inherited universal ideas, wishes and memories. b. common learned experiences in childhood or infancy. c. tendencies to sacrifice ourselves for the group. d. ideas that arise from, and are specific to...
*November 21, 2013*

**Math Statistics**

A company sells cans of chicken soup that that are advertised to contain 20 oz. However due to variations in the manufacturing process, the volume of soup in the cans is, in fact, Normally distributed with a mean of 20.1 oz and a standard deviation of 0.4 oz. • What is ...
*November 14, 2013*

**Math**

Suppose a random variable X has a uniform distribution over the interval [-10,10]. • Find the probability that X lies between -2 and 6? • Find the probability that X2 lies between 9 and 64? (Note X2 is the square of X.)
*November 13, 2013*

**Statistics Question 3**

A company sells cans of chicken soup that that are advertised to contain 20 oz. However due to variations in the manufacturing process, the volume of soup in the cans is, in fact, Normally distributed with a mean of 20.1 oz and a standard deviation of 0.4 oz. • What is ...
*November 13, 2013*

**statistics Question 2**

Suppose a person buys 100 shares of stock at in a company at the cost price of $10 per share. He plans to sell at the end of the next month at whatever is the price at that time. The projected price of the stock at the end of next month and the corresponding probability of ...
*November 13, 2013*

**Statistics Question 1**

According to the American Heart Association, one in every four deaths in the U.S. is due to heart disease. Suppose 25 people will die in the U.S. in the next 5 minutes. • What is the chance that exactly 5 of the deaths will be due to heart disease? • What is the ...
*November 13, 2013*

**Statistics**

Are you sure that is the variance. I got .14
*November 13, 2013*

**Statistics**

Suppose a person buys 100 shares of stock at in a company at the cost price of $10 per share. He plans to sell at the end of the next month at whatever is the price at that time. The projected price of the stock at the end of next month and the corresponding probability of ...
*November 13, 2013*

**statistics**

According to the American Heart Association, one in every four deaths in the U.S. is due to heart disease. Suppose 25 people will die in the U.S. in the next 5 minutes. • What is the chance that exactly 5 of the deaths will be due to heart disease? • What is the ...
*November 13, 2013*

**Statistics**

Suppose a random variable X has a uniform distribution over the interval [-10,10]. • Find the probability that X lies between -2 and 6? • Find the probability that X2 lies between 9 and 64? (Note X2 is the square of X.)
*November 13, 2013*

**Math**

Rob practiced 3/5 of his music in 25 minutes. About how long did it take him to practice all his music?
*November 13, 2013*

**Psychology**

1 In Psychology, the study of personality focuses on: a. change. b. stability. c. external factors. d. learning factors.
*November 12, 2013*

**Psychology**

9 Dr. Kyle shared the newspaper clipping with the class. â€œThis is an unusual case, but I believe that punishment phase of the trail would have been different in another state. The crime was committed, but the defendant is not in touch with reality most of the...
*November 12, 2013*

**reading**

a host of golden daffodils
*October 25, 2013*

**reading**

what metaphor is in the poem dafffodils by william wordsworth ?
*October 25, 2013*

**reading**

what assonance is in the poem daffodils by william-wordsworth?
*October 25, 2013*

**Astronomy**

Calculate the amount of energy released if a total of 1.5 kg of hydrogen is fused into helium.
*October 24, 2013*

**history **

The transformation of the office of UN secretary-general from “chief clerk” to “international peacemaker” proves that a. the Security Council is not as powerful as it was meant to be. b. the General Assembly may also become more active someday. c. the ...
*October 15, 2013*

**psychology**

8 Suppose that you are dropping off at a large mall without money and merely wander around looking at stores and displays. Later, someone asks you were a particular store is located in the mall. The fact that you direct the person to the store indicates that ______________ has...
*October 15, 2013*

**Psychology**

8 Suppose that you are dropping off at a large mall without money and merely wander around looking at stores and displays. Later, someone asks you were a particular store is located in the mall. The fact that you direct the person to the store indicates that ______________ has...
*October 14, 2013*

**English**

I need help writing an english essay
*October 8, 2013*

**physics**

A projectile is launched straight up at 55.5 m/s from a height of 73.5 m, at the edge of a sheer cliff. The projectile falls, just missing the cliff and hitting the ground below.
*September 27, 2013*

**Chemistry**

hi im steven i posted this question, can anyone help me understand how to do this problem and explain it to me please. I'm not really like this unit and i'm stressing for the exam coming up. please and thank you
*August 19, 2013*

**math**

How many ordered pairs of integers solutions (x,y) are there to 2x^2+3xy+y^2+2x+y+18=0?
*August 14, 2013*

**Physics**

Certain transmission lines can be modeled as a long 3D circuit as shown in the figure below. Here, all the the wires have equal length and electrical resistance R=1 Ω. Determine the equivalent resistance in Ohms between the points A and B. Assume the transmission line to ...
*August 6, 2013*

**physics (please help elena)**

We will now examine how much time we need to stop a ship-engine-like cylinder. Suppose you take a rotating cylinder and let it roll to the right until it reaches a vertical wall. It then spins against the two walls as shown in the picture, slowly slowing down. How much time ...
*August 6, 2013*

**Physics**

Dust particles are trapped on a surface. There are two energy levels particles can be in: absorbed on a surface with zero energy, and wiggling with energy E=3/2kT. However, since the surface area is limited, not all particles can be in any state. There are 1000 particles and ...
*August 5, 2013*

**Physics**

Rotating cylinders are not just physical abstractions: for example, they can turn a flow of the air, thus creating lift as the airplane wings. Historically people have even used rotating cylinders to power ships (although with little efficiency). NASA wrote more about this ...
*August 5, 2013*

**math**

i mean f^(5)(x)=f(f(f(f(f(x))))).
*July 31, 2013*

**math**

Define the function f(x)=2x/(1−x^2). Find the number of distinct real solutions of the equation f^(5)(x)=x.
*July 31, 2013*

**math**

Determine how many 1000 digit numbers A have the following property: When any digit of A, aside from the first, is deleted to form a 999 digit number B, then B divides A.
*July 31, 2013*

**physics**

A U.S quarter is rolling on the floor without slipping in such a way that it describes a circular path of radius R=4 cm. The plane of the coin is tilted at an angle of θ=45∘ with respect to the horizontal plane (see the figure below). Find the coin's period T in...
*July 30, 2013*

**Physics**

A wire is bent into the shape of an planar Archimedean spiral which in polar coordinates is described by the equation r=bθ. The spiral has N=100 turns and outer radius R=10 cm (R is the distance from point O to point T). Note that in the figure below we show a spiral ...
*July 29, 2013*

**physics**

Yeah it is !
*July 29, 2013*

**physics**

Our muscles atrophy when there is no gravitational force. On long space flights this is a problem, which is why astronauts exercise. On very long space flights it might be advisable to simulate gravity. Your space ship is a long cylinder of radius 100 m that spins about its ...
*July 29, 2013*

**Data Structures and Algorithms**

how can i give the link ??
*July 24, 2013*

**Data Structures and Algorithms**

Given integers R,M with M≠0, let S(R,M) denote the smallest positive integer x satisfying the congruence Rx≡1(mod M) if such an x exists. If such an x does not exist, put S(R,M)=0. Each line of this text file contains a pair of space separated integers representing...
*July 24, 2013*

**physics**

so whats the correct answer?
*July 23, 2013*

**physics**

no no your correct but correct answer will bet putting h-3 in place of h..
*July 23, 2013*

**physics**

i think we will get from your way damon h be about 15.68 which is wrong..
*July 23, 2013*

**physics**

A bungee jumper jumps from a bridge with a 3 m long bungee cord. Once the cord starts to stretch, it acts like an ideal spring with coefficient of elasticity k=100 N/m. What should be the minimum height of the bridge in m so that this jump is safe for the jumper? Details and ...
*July 23, 2013*

**physics**

You prefer soft-boiled to hard-boiled eggs, but you hate waiting next to your eggs to check if they're cooked. Therefore, you want to determine how often do you need to check the eggs so that they're not overcooked. What time does it take in minutes for a soft-boiled ...
*July 22, 2013*

**physics**

i researched online and it says J/kgK is the same as J/kgC so im gunna try just using 15 as the temperature, tell me what u get?
*July 22, 2013*

**physics**

i got 33.8 minutes im not sure what im doing wrong :/
*July 22, 2013*

**physics**

You prefer soft-boiled to hard-boiled eggs, but you hate waiting next to your eggs to check if they're cooked. Therefore, you want to determine how often do you need to check the eggs so that they're not overcooked. What time does it take in minutes for a soft-boiled ...
*July 22, 2013*

**physics**

You prefer soft-boiled to hard-boiled eggs, but you hate waiting next to your eggs to check if they're cooked. Therefore, you want to determine how often do you need to check the eggs so that they're not overcooked. What time does it take in minutes for a soft-boiled ...
*July 22, 2013*

**Math**

George studied 1/4 hour on Monday and 3/8 hour on Tuesday. How long did he study altogether on both days?
*June 18, 2013*