# Will

Most popular questions and responses by Will-
## physics

A car is being pulled out of the mud by two forces that are applied by the two ropes shown in the drawing. The dashed line in the drawing bisects the 30.0° angle. The magnitude of the force applied by each rope is 2900 newtons (N). (a) How much force

*asked on June 28, 2013* -
## chemistry

sodium reacts completely with 0.142kg of chlorine, forming 234g of sodium chloride. What mass of sodium reacted? I know that for chemical changes the amounts should end up being equal, but I don't know how to set up the problem.

*asked on September 17, 2010* -
## chemistry

determine the end value of n in a hydrogen atom transition if the electron starts in n=2 and the atom absorbs a photon of light with a frequency of 4.57 times 10^14 Hz

*asked on July 5, 2010* -
## chemistry

When carbon is burned in air, it reacts with oxygen to form carbon dioxide. When 24.0 of carbon were burned in the presence of 76.8 of oxygen, 12.8 of oxygen remained unreacted. What mass of carbon dioxide was produced?

*asked on September 17, 2010* -
## college math - biostatistics

hey... first time user and really lost. wondering if someone can help: Based on data from the Statistical Abstract of the United States, 112th Edition, only about 14% of senior citizens (65 years old or older) get the flu each year. However, about 24% of

*asked on February 18, 2009* -
## precalculus

There are two boxes. The red box contains four red marbles and one blue marble, and the blue box contains five blue marbles and three red marbles. The following experiment is done a hundred times: A marble is randomly drawn from one of the boxes, its color

*asked on March 30, 2019* -
## accounting

Jack Shellenkamp owns and manages a computer repair service, which had the following trial balance on December 31, 2011 (the end of its fiscal year). BYTE REPAIR SERVICE Trial Balance December 31, 2010 Cash $8,000 Accounts Receivable 15,000 Parts Inventory

*asked on February 25, 2012* -
## Science

Which statement is true about the products of cellular respiration? They contain oxygen. They contain glucose. They become the products of photosynthesis. They become the reactants of photosynthesis.***

*asked on February 7, 2019* -
## Algebra 1

You trimmed a large square picture so that you could fit it into a frame. The area of the cut picture is 20 square inches. What is the area of the original picture?

*asked on February 17, 2016* -
## Physics

Two ice skaters have masses m1 and m2 and are initially stationary. Their skates are identical. They push against one another, as shown below, and move in opposite directions with different speeds. While they are pushing against each other, any kinetic

*asked on April 1, 2008* -
## Chemistry Periodic Trends

The electron affinities of the elements from aluminum to chlorine are -44, -120, -74, -200.4, and -384.7 kJ/mol respectively. Rationalize the trend in these values. Electron affinity is the energy absorbed (endothermic) or emitted (exothermic) by the

*asked on February 11, 2007* -
## Economics

Sandra purchases 5 pounds of coffee and 10 gallons of milk per month when the price of coffee is $10 per pound. She purchases 6 pounds of coffee and 12 gallons of milk per month when the price of coffee is $8 per pound. Sandraâ€™s cross-price

*asked on November 29, 2011* -
## Physics

Suppose you are hiking down the Grand Canyon. At the top, the temperature early in the morning is a cool 1°C. By late afternoon, the temperature at the bottom of the canyon has warmed to a sweltering 37°C. (a) What is the difference between the higher

*asked on April 3, 2008* -
## Economics

The price received by sellers in a market will decrease if the government Answer A. imposes a binding price floor in that market. B. decreases a binding price ceiling in that market. C. decreases a tax on the good sold in that market. D. increases a

*asked on November 29, 2011* -
## accounting URGENT HELP DUE IN 1HR

(a) Fill in the missing amounts. (If answer is zero, please enter 0. Do not leave any fields blank.) Account Titles Trial Balance Adjusted Trial Balance Dr. Cr. Dr. Cr. Accounts Receivable 34,000 Prepaid Insurance 26,000 20,000 Supplies 7,000 Accumulated

*asked on March 11, 2012* -
## Physics

A car with a mass of 950 kg and an initial speed of v1 = 21.5 m/s approaches an intersection, as shown in the figure. A 1300 kg minivan traveling northward is heading for the same intersection. The car and minivan collide and stick together. If the

*asked on October 19, 2008* -
## Math

Suppose you have a cache of radium, which has a half-life of approximately 1590 years. How long would you have to wait for 1/5 of it to disappear?

*asked on March 26, 2015* -
## Calculus

What is the Riemann sum to find the area under the graph of the function f(x) = x4 from x = 5 to x = 7.

*asked on May 21, 2018* -
## physics

In the high jump, the kinetic energy of an athlete is transformed into gravitational potential energy without the aid of a pole. With what minimum speed must the athlete leave the ground in order to lift his center of mass 2.00 m and cross the bar with a

*asked on October 12, 2009* -
## Calculus help please

Use the mid-point rule with n = 4 to approximate the area of the region bounded by y = -x^3 and y = -x

*asked on July 16, 2018* -
## chemistry

Determine the hydroxide ion concentration in a solution that is 0.0004 M HCl. Answer in units of M. I have no idea how to start, I just need to know what I need to solve for and hoe to set it up, I know the formula pOH^-=-log[OH^-] I just don't know where

*asked on April 16, 2015* -
## chemistry

I am having a hard time with this one not sure how to set up the problem. A gas can holds 1.7gal of gasoline. What is this quantity in cubic centimeters? I know that 1gal=3.785L I know that 1L=1000cm^3 I have tried 1.7gal*3.785L/1gal=6.4345cm^3. I just can

*asked on September 8, 2010* -
## math

Jamie is riding a Ferris wheel that takes 15 seconds for each complete revolution. The diameter of the wheel is 10 meters and its center is 6 meters off the ground. When Jamie is 9 meters above the ground and rising, at what rate is Jamie gaining altitude?

*asked on March 10, 2019* -
## math

Courtney is supposed to run laps around the outdoor track. At the start of each lap, however (even the first), there is always an 8 percent chance that Courtney will call it quits for the day. What is the probability that today Courtney will run (a) no

*asked on March 11, 2019* -
## economics

which of the following statements about inflation are true? check all that applies a) policy makers also worry about a negative inflation rate, or deflation b) painful government actions may sometimes be necessary to bring down a high inflation rate. c) A

*asked on September 23, 2012* -
## history

Describe the social structure and lifestyles of the 1960s Counterculture. How did the Vietnam War influence the Counterculture? Is there a counterculture today?

*asked on June 23, 2008* -
## Economics

Suppose the government has imposed a price floor on the market for soybeans. Which of the following events could transform the price floor from one that is not binding into one that is binding? A. Farmers use improved, draught-resistant seeds, which lowers

*asked on November 29, 2011* -
## pre cal

The vector u = (4300, 5200) gives the number of units of two models of laptops produced by a company. The vector v = 1800, 1200 gives the prices (in dollars) of the two models of laptops, respectively. Identify the vector operation used to increase revenue

*asked on July 14, 2016* -
## physics

Waves on a particular string travel with a speed of 17 m/s. By what factor should the tension in this string be changed to produce waves with a speed of 102 m/s

*asked on February 7, 2012* -
## Physics

When the three blocks in the figure below are released from rest, they accelerate with a magnitude of 0.370 m/s2. Block 1 has mass M, block 2 has 5M, and block 3 has 5M. What is the coefficient of kinetic friction between block 2 and the table? block 1 is

*asked on November 18, 2010* -
## geometry help ASAP

Persevere in solving problems. Create a report that provides a detailed description of the park. Include the following in your report: the actual side lengths of the triangular plot of land the type of triangle formed by the intersection of the three

*asked on December 10, 2018* -
## Chemistry

A compound of chlorine and fluorine, ClFn, reacts at about 75oC with uranium metal to produce uranium hexafluoride, UF6 and chlorine monofluoride, ClF (g). A quantity of uranium produced 3.53g UF6 and 343 mL ClF at 75oC and 2.50 atm. What is the formula

*asked on May 26, 2014* -
## physics

The figure below shows an initially stationary block of mass m on a floor. A force of magnitude F = 0.570·mg is then applied at upward angle è = 22°. (a) What is the magnitude of the acceleration of the block across the floor if (a) ìs = 0.600 and ìk

*asked on November 18, 2010* -
## math

In the triangles, we have XY = 2AX = 2YB and AZ/ZC = 2/3. Find the ratio of the area of triangle YBC to the area of triangle ZYC.

*asked on March 29, 2015* -
## physics

When a 0.045 kg golf ball takes off after being hit, its speed is 35 m/s. A)How much work is done on the ball by the club? B)Assume that the force of the golf club acts parallel to the motion of the ball and that the club is in contact with the ball for a

*asked on April 18, 2010* -
## Calculus

A rectangle is to be inscribed under the curve y=4cos(.5x). The rectangle is to be inscribed from x=0 to x=pi. Find the dimensions that give max area and what is the max area.

*asked on February 1, 2018* -
## Physics

What force is required to stop a 1500-kg car in a distance of 0.20 m if it is initially moving at 2.2 m/s?

*asked on December 7, 2017* -
## precalculus

The height of an object moving up and down is described by 𝑦 = 72 + 40𝑐𝑜𝑠18𝑡 (in degree mode). This is an example of simple harmonic motion. To at least three decimal places, confirm that the average speed of the object is 2/π times its

*asked on March 12, 2019* -
## Consumer Math

Compute the square footage of carpet needed to cover a room 12' 3" x 18' 4".

*asked on January 11, 2013* -
## Please help

A rectangular picture frame has a perimeter of 58 inches. The height of the frame is 18 inches. What is the width of the frame? Please help show work and help answer thanks

*asked on September 25, 2015* -
## Physics

An 85 kg jogger is heading due east at a speed of 1.7 m/s. A 55 kg jogger is heading 40° north of east at a speed of 3.4 m/s. Find the magnitude and direction of the sum of momenta of the two joggers.

*asked on April 1, 2008* -
## english

can someone please explain to me this excerpt from Mary Reynolds, an ex slave. " He raised corn and cotton and cane and 'taters and goobers, 'sides the peas and other feedin' for n******. I 'member I helt a hoe handle mighty onsteady when they put a old

*asked on May 28, 2019* -
## CRITICAL THINKING

Please post a substantive response to the following discussion questions by clicking on Reply: Aristotle developed a theory of persuasion by which there are three ways a speaker can persuade an audience. Ethos is the idea that an audience can be persuaded

*asked on June 28, 2012* -
## Chemistry

If a solution contains 0.65mol of OH−, how many moles of H+ would be required to reach the equivalence point in a titration?

*asked on November 16, 2014* -
## Math

What is the pattern for 3, 19, 99, 499, 2499

*asked on September 13, 2010* -
## Math

The crate has 22 red apples 15 green apples and 8 yellow apples what is the ratio that compares the number or green apples to the total number of apples.

*asked on September 28, 2019* -
## Physics

A mine car (mass 380 kg) rolls at a speed of 0.5 m/s on a horizontal track, as the drawing shows. A 150 kg chunk of coal has a speed of 0.80 m/s when it leaves the chute. Determine the velocity of the car/coal system after the coal has come to rest in the

*asked on April 1, 2008* -
## math

During a severe thunderstorm, Tim saw a flash of lightning and then six seconds later heard a clap of thunder. The speed of sound is 1088 ft/sec. How far is Tim from the lightning? Nearest Thousand Feet.

*asked on February 27, 2015* -
## chemistry Pleae

C7H14O2 + NaOH What will this combination make? and can it be balanced?

*asked on August 22, 2013* -
## Math

Tickets to a game are $5 for adults and $2 for children. Six hundred tickets are sold for a total of $2160. How many adult tickets and how many children's tickets have been sold?

*asked on July 27, 2011* -
## science

Here are some examples of molecules: Cl2, CO2, SO2, and CF4. Each of these is related in that they're all bonded covalently. Which of these is a covalently-bonded molecule also? A. He atoms B. K2S C. BaBr2 D. P2O4

*asked on June 29, 2016* -
## Statistics

A researcher surveyed college students to study their opinion about the proposed change in smoking rules. The researcher asked a group of 30 students: 12 of them supported the change, 13 of them did not, and 5 had no opinion. This is not a binomial model

*asked on July 29, 2013* -
## Chemistry

Small amounts of chlorine gas can be gener- ated in the laboratory from the reaction of manganese(IV) oxide with hydrochloric acid: 4 HCl(aq) + MnO2(s) → 2 H2O(l) + MnCl2(s) + Cl2(g). What mass of Cl2 can be produced from 41.8 g of MnO2 with an excess of

*asked on March 30, 2016* -
## Chemistry

Consider this equilibrium: N2O4(g) + heat NO2(g). Initially, a 1.0 L container is filled with 2.0 mol of NO2. As the system approaches equilibrium, what happens to the rate of reaction of NO2 breaking down?

*asked on April 29, 2011* -
## Physic

Why do protons in a very large nucleus have a greater chance of flying apart by electrical repulsion?

*asked on November 13, 2007* -
## english

i am reading A Girl Threatened by Sexual Exploitation by Harriet Jacobs. Can someone please explain what this excerpt mean? "No matter whether the slave girl be as black as ebony or as fair as her mistress. In either case, there is no shadow of law to

*asked on May 27, 2019* -
## english

i am reading A Girl Threatened by Sexual Exploitation by Harriet Jacobs. Can someone please explain what this excerpt mean? " My master began to whisper foul words in my eat. Young as I was, I could not remain ignorant of their import. I tried to treat

*asked on May 26, 2019* -
## ACT Prep

Question:So,far Michael has earned the following scores on five 100-point tests this semester: 72, 94, 85, 83, 97. What score must he earn on the sixth 100-point test of the semester if he wants to make an 88 point average for the six tests? Answer Choices

*asked on February 3, 2016* -
## english

Please explain this sentence. "I tried to treat them with indifference and contempt". Thank you

*asked on June 6, 2019* -
## Business math

Order for 620 dresses from China, cost is $40 a gown, markup based on selling is 76%, what is the selling price of each gown?

*asked on September 26, 2014* -
## physics

An X-ray tube used for cancer therapy operates at 4.04 MV with a beam current of 23.4 mA striking a metal target. Calculate the power of this beam.

*asked on February 12, 2014* -
## Math

what is the equation for the perpendicular bisector of the line segment whose endpoints are (-7,2) (-1,-6)

*asked on November 29, 2012* -
## Trigonometry

The tires on a car have radius 14 inches. Find the angular speed of the car tire in revolutions per second when it is traveling 70 mph. Find the angular speed at 80 mph. The tires on a car are 15 inches. Find the linear speed of the car when the tires are

*asked on January 21, 2012* -
## Physics

Block B in the figure below weighs 713 N. The coefficient of static friction between block and table is 0.20. Assume that the cord between B and the knot is horizontal. Find the maximum weight of block A for which the system will be stationary.

*asked on November 18, 2010* -
## Algebra

A diver begins at sea level and descends vertically at a rate of 2 1/2 feet per second. How long does the Diver take to reach -15.6 feet?

*asked on September 22, 2015* -
## math

Divide 7/24 by 35/48 and reduce the quotient to the lowest fraction. A. 245/1152 B. 4/10 C. 2/5 D. 42/48

*asked on April 12, 2012* -
## Chemistry

Consider this equilibrium: N2O4(g) + heat NO2(g). Initially, a 1.0 L container is filled with 2.0 mol of NO2. As the system approaches equilibrium, what happens to the rate of reaction of NO2 breaking down?

*asked on April 29, 2011* -
## chemistry

Could someone please tell me if I did this question correctly? An incomplete combustion reaction of 12.125 grams of propane proceeds as follows: 2C3H8 + 11O2 = 3CO2 + 4H2O + 2CO + C(s).How many grams of solid carbon residue are produced as a product? my

*asked on October 13, 2009* -
## algebra 1

A very old vending machine accepts only nickels (n) and dimes (d). Candy costs up to $0.50, but sometimes the machine will dispense candy without any coins being inserted into the machine. Which inequality shows all of the ways to obtain a candy bar from

*asked on January 13, 2015* -
## science

In the system shown in the figure , block A has mass m_A = 2.08 kg, block B has mass m_B = 0.370 kg, and the rope connecting them has a nonzero mass 0.203 kg. The rope has a total length 1.03 m and the pulley has a very small radius. Let d be the length of

*asked on January 18, 2011* -
## CHEMISTRY HELP NOW

A balloon at a pressure of 755 torr and a volume of 5.00 L was allowed to rise in the atmosphere to a point at which the pressure inside and outside the balloon was 697 torr. What was the volume of the balloon at that altitude, assuming the temperature was

*asked on December 19, 2012* -
## geometry

Triangle ABC, AB=8, BC=10, and AC=12, M is the midpoint of AB, and N is the midpoint of BC. What is the length of MN?

*asked on January 1, 2011* -
## Physics

The artificial sweetener NutraSweet is a chemical called aspartame (C14H18N2O5). (a) What is its molecular mass (in atomic mass units)? 294.13 u (b) What is the mass (in kg) of an aspartame molecule? kg I was able to find the mass units but I'm having

*asked on April 27, 2008* -
## Physics

A puck of mass 0.165 kg, initially resting on ice, is hit by a stick to gain a speed of 32.0 m/s and then slides 25.0 m to lose 5.00% of its kinetic energy. (a) What is the work done on the puck by the stick? (b) What is the kinetic friction coefficient

*asked on October 11, 2014* -
## chemistry

glycine and lysine, have the following values of the relevant acid dissociation constants (pKa) glycine, pKa=2.35 lysine,pKa=10.79 For an aqueous solution of glycine alone, calculate the value of pH at which the ratio of the concentration of neutral

*asked on August 26, 2014* -
## english

what does pious hearted mean?

*asked on June 6, 2019* -
## physics

A CD has a mass of 17.4 g and a radius of 6.01 cm. When inserted into a player, the CD starts from rest and accelerates to an angular velocity of 20.0 rad/s in 0.901 s. Assuming the CD is a uniform solid disk, determine the net torque acting on it.

*asked on March 8, 2012* -
## physics

Andy (mass 80 kg) uses a 3.0 m long rope to pull Bob (mass 60kg) across the floor (uk= .2) at a constant speed of 1.0 m/s. Bob signals to Andy to stop by plucking the rope, sending a wave pulse forward along the rope. The pulse reashes andy 150 ms later.

*asked on September 24, 2010* -
## Physics

ssm By accident, a large plate is dropped and breaks into three pieces. The pieces fly apart parallel to the floor, with v1 = 2.95 m/s and v2 = 1.70 m/s. As the plate falls, its momentum has only a vertical component, and no component parallel to the

*asked on April 1, 2008* -
## statistics

Can a percentile have the VALUE of 517? Can a percnetile have the VALUE -5.8? Can a percentile have the RANK 517? Can a percnetile have the RANK -5.8?

*asked on August 29, 2012* -
## Economics

Supply is Demand is Scenario A elastic elastic Scenario B elastic inelastic Scenario C inelastic elastic Scenario D inelastic inelastic Which scenario describes the market for oil in the long run? A. A B. B C. C D. D

*asked on November 29, 2011* -
## Math - Vector Geometry

what is the cartesian equation of the parametric equations x=2sin(2t) and y=4cos(2t) need help badly!!!!!!!

*asked on September 7, 2008* -
## physics

A system undergoes a two-step process. In the first step, the internal energy of the system increases by 368 J when 144 J of work is done on the system. In the second step, the internal energy of the system increases by 24 J when 248 J of work is done on

*asked on April 26, 2008* -
## Physics

Concept Simulation 3.2 reviews the concepts that are important in this problem. A golfer imparts a speed of 32.9 m/s to a ball, and it travels the maximum possible distance before landing on the green. The tee and the green are at the same elevation. (a)

*asked on April 1, 2008* -
## physics

A car is traveling 26 m/s when the driver sees a child standing in the road. He takes 0.8 s to react, then steps on the brakes and slows at 6.0 m/s2. How far does the car go before it stops?

*asked on February 10, 2008* -
## Calculus

find the approximate volume in cubic units of the solid created when the region under the curve y = sec(x) on the interval [0, pi / 3 ] is rotated around the x-axis.

*asked on June 19, 2018* -
## chemistry

How many grams of table sugar (C12H22O11) will be needed to make 3.5 L of a 11.5 M solution?

*asked on July 27, 2015* -
## grammar

Ray Bradbury is also a writer of science fiction. what is the subject and the simple subject?

*asked on August 23, 2009* -
## Business

Assume the role of a small business owner. You have little funds to put into insurance and protection for your company. You have to decide where your extra funds will be stretched. Is it more important for you as a business owner to protect your business

*asked on January 20, 2009* -
## math

You have 2 digits, 2 numbers, reverse digits and 54 if the difference and the sum of all is 10 I'm not clear what you're asking, could you clarify what the conditions are for us please? My grandson came home with the problem that he wrote out on a piece of

*asked on August 31, 2006* -
## Chem

Calculate the volume of .300 M NaOH needed to prepare a pH=3.50 buffer with 250ml of .075M HF solution. pKa (HF) = 3.15

*asked on February 11, 2012* -
## Physics

A 2.50 g bullet, traveling at a speed of 435 m/s, strikes the wooden block of a ballistic pendulum, as shown. The block has a mass of 270 g. (a) Find the speed of the bullet/block combination immediately after the collision. m/s (b) How high does the

*asked on April 1, 2008* -
## physics

a high speed sander has a disk of 2.74 cm in radius that rotates its disks about the axis at a constant rate of 503 rev/min. determine the linear speed of a point 2.33 cm from the disk's center. answer in units of m/s

*asked on October 18, 2007* -
## physics

A rifle with a muzzle velocity of 480 m/s shoots a bullet at a target 45.6 m away. How high above the target must the rifle barrel be pointed to ensure that the bullet will hit the target? Neglect air resistance.

*asked on September 7, 2014* -
## Math

what is the equation for the perpendicular bisector of the line segment whose endpoints are (-7,2) (-1,-6)

*asked on November 29, 2012* -
## science

explain how water can transfer energy by conduction and by convection.

*asked on June 3, 2008* -
## Physics

At time = 0 an automobile already traveling at 30 km/hr. accelerates at 3m/s2 for 2 seconds. During these two seconds, how far does it go? i still cant get this one right. i think im not doing the formula right

*asked on September 2, 2007* -
## Grammar- Capitaliation

Assistant dean Shirin Ahmadi recommended offering more language courses. We went to the mark taper forum to see a production of angels in america. Lydia's aunt and uncle make modular houses as beautiful as modernist works of art We amused ourselves on the

*asked on March 3, 2012* -
## physics

A mass of 0.04 kg is attached to a cord passing through a small hole in a frictionless, horizontal surface. The mass is initially orbiting with speed 4.9 m/s in a circle of radius 0.4 m. The cord is then slowly pulled from below, decreasing the radius of

*asked on October 19, 2011* -
## physics

Sally travels by car from one city to another. She drives for 29.0 min at 63.0 km/h, 37.0 min at 32.0 km/h, and 14.0 min at 26.0 km/h, and she spends 14.0 min eating lunch and buying gas.

*asked on September 13, 2016*