# daniel

Popular questions and responses by daniel-
## College Physics

A uniform horizontal rod of mass M and length l rotates with angular velocity w (omega) about a vertical axis through its center. Attached to each end of the rod is a small mass m. Determine the angular momentum of the system about the axis. Write you're

*asked on October 20, 2012* -
## Algebra 2 A

A jet ski company charges a flat fee of $26.00 plus $3.25 per hour to rent a jet ski. Another company charges a fee of $24.00 plus $3.50 per hour to rent the same jet ski. Using a graphing calculator, find the number of hours for which the costs are the

*asked on September 27, 2017* -
## Chemistry

Calculate the energy change associated with the transition of an electron from the n=2 shell to the n=5 shell in a Bohr hydrogen atom.

*asked on November 18, 2012* -
## Statistics

A particular fruit's weights are normally distributed, with a mean of 353 grams and a standard deviation of 6 grams. If you pick one fruit at random, what is the probability that it will weigh between 334 grams and 344 grams?

*asked on May 4, 2015* -
## Physics

A 821-kg car stopped at an intersection is rear-ended by a 1810-kg truck moving with a speed of 11.5 m/s. If the car was in neutral and its brakes were off, so that the collision is approximately elastic, find the final speed of both vehicles after the

*asked on November 19, 2011* -
## social studies

what ar all the anwsers to florida studies weekly on week 13

*asked on December 1, 2010* -
## chemistry

three student chemists measured 50.0 mL of 1.00 M NaOH in separate Styrofoam "coffee cup" calorimeters ( Part B). Brett added 50.0 mL of 1.10 M HCI to his solution of NaOH; Dale added 45.5 mL of 1.10 m HCL 9 eqaul moles) to his NaOH solution. Lyndsay added

*asked on January 17, 2011* -
## Physics

An airplane ﬂies at airspeed (relative to the air) of 430 km/h . The pilot wishes to ﬂy due North (relative to the ground) but there is a 43 km/h wind blowing Southwest (direction 225◦). In what direction should the pilot head the plane (measured

*asked on December 30, 2012* -
## physics

A convex mirror in an amusement park has a radius of curvature of 3.00m. A man stands in front of the mirror so that his image is half as tall as his actual height. At what distance must the man focus his eyes in order to see his image? I calculated the

*asked on March 17, 2012* -
## History

1. Why did William T. Sherman want to attack Columbia? (1 point) a. because he had lost a previous skirmish there *b. because he wanted to attack the capital of the state where the war began c. because it was located directly in his line of march from

*asked on February 12, 2019* -
## Math

A fuel oil tank is an upright cylinder, buried so that its circular top 12 feet beneath ground level. The tank has a radius of 6 feet and is 18 feet high, although the current oil level is only 13 feet deep. Calculate the work required to pump all of the

*asked on February 14, 2018* -
## physics

A steel section of the Alaskan pipeline had a length of 65 m and a temperature of 22° C when it was installed. What is its change in length when the temperature drops to a frigid -37° C?

*asked on July 25, 2013* -
## English

As the headboy of your school write a speech on the send forth party of the principal of your school.

*asked on May 23, 2011* -
## Algebra 2 A

A candy store makes a 9-pound mixture of gummy candy, jelly beans, and hard candy. The cost of gummy candy is $2.00 per pound, jelly beans cost $3.00 per pound, and hard candy costs $3.00 per pound. The mixture calls for two times as many gummy candy

*asked on September 27, 2017* -
## Statistics

Hello. I would like to ask a college statistics question. Q. One hundred draws are made at random with replacement from the box [1,2,2,5]. The draws come out as follows:17 [1]'s, 54 [2]'s, 29 [5]'s. Fill in the blanks, using the options below; show work.

*asked on March 28, 2013* -
## Logic

Riddle: It's 7:00 AM. You are asleep and there is a sudden knock on the door. Behind the door are your parents who came to have breakfast. In your fridge are bread, milk (pasteurized), juice, and a jar of jam. To answer, what will you open first? * Answer

*asked on May 21, 2019* -
## physics

A 2.44 kg object is subjected to three forces that give it an acceleration vector a = -(8.00 m/s2)i hat + (6.00 m/s2)j hat. If two of the three forces are vector F1 = (30.7 N)i hat + (17.0 N)j hat and vector F2 = -(12.0 N)i hat + (8.00 N)j hat, find the

*asked on October 19, 2014* -
## American Government

The city council of Smallton has just chosen a new chief administrator. She will carry out the policies of the council and hire department heads. If the council is not pleased with her work, it has the ability to dismiss her at any time. Which form of city

*asked on November 2, 2017* -
## calculus

-find the equation of the tangent line to the curve y=5xcosx at the point (pi,-5pi) -the equation of this tangent line can be written in the form y=mx+b where m= and b= -what is the answer to m and b?

*asked on February 24, 2011* -
## geometry

Let $\overline{PQ}$, $\overline{RS}$, and $\overline{TU}$ be parallel chords of a circle. The distance between chords $\overline{PQ}$ and $\overline{RS}$ is 4, and the distance between chords $\overline{RS}$ and $\overline{TU}$ is also 4. If $PQ = 78$ and

*asked on December 6, 2015* -
## Chemistry (Electrochemistry)

Consider the titrtation of 25.0mL of 0.0100M Sn2+ by 0.0500M TI3+ in 1 M HCL, using Pt and Saturated Calomel Electrodes to find the endpoint. F=96486.7 Cmol E0 Sn4+/Sn2+ =0.15V E0 TI3+/TI+ = 1.28 Esce = 0.241V R=8.3141 J K Mol (a) Write the balanced

*asked on January 21, 2015* -
## History

Which accurately describes the involvement of the Catholic church in medieval European government? A. the rules and rituals of the church guided the administration of government in Europe. B. The Catholic Church forced European Kings to adopt the

*asked on November 1, 2017* -
## Physics

A young hockey player stands at rest on the ice holding a 1.3-kg helmet. The player tosses the helmet with a speed of 4.6 m/s in a direction 13° above the horizontal, and recoils with a speed of 0.27 m/s. Find the mass of the hockey player.

*asked on November 19, 2011* -
## Physics

A car is traveling North. In which direction are the wheels turning. This is under the torque chapter

*asked on October 24, 2015* -
## social studies

How is the government of Belarus different from those of other European countries? A. It is a theocracy led by religious leaders. B. It is a dictatorship with a ruler who has held power for many years. C. It is a monarch, in which power is handed down to

*asked on May 13, 2019* -
## arithmetic

The sum of the first 10th term of an a.p is 255,the sum of the first 20 term is 1010.find the next 2020 term of the progression

*asked on January 31, 2012* -
## math

Which of the following is the equation of a direct variation that has a constant of variation equal to -? y = x - -y = x y = -2x y = -x

*asked on May 19, 2011* -
## Algebra 2 A

What is the minimum value for z=3x-1/2y over the feasibility region defined by the constraints? a.-4 b.-5 c.-3 d.-6 constraints x greater than or equal to 0 y less than or equal to 8 y greater than or equal to x y greater than or equal to -1/2x+6

*asked on September 27, 2017* -
## Math

My question: A spinner looks like this: A disc divided into sections that might or might not be the same size, with a pointer that when spun will land on some part of the disc at random. The sections might be colours, or, as in these problems, have numbers

*asked on January 8, 2009* -
## ICT

explain five uses of ICT in communication, timing and control and information processing and data storage

*asked on May 14, 2019* -
## Chemistry

When 0.100 mol of CaCO3 (s) and 0.100 mol of CaO (s) are placed in an evacuated container with a volume of 10.0-L and heated to 385 K, PCO2 = 0.220 atm after equilibrium is established: CaCO3(s) ⇌ CaO (s) + CO 2 (g) An additional 0.300 atm of CO2 (g) is

*asked on February 9, 2012* -
## Physics

A 2.0-cm thich bar of soap is floating on a water surface so that 1.5 cm of the bar is under water. Bath oil of specific gravity 0.60 is poured into the water and floats on top of it. What is the depth of the oil layer when the top of the soap is just

*asked on November 10, 2010* -
## Physics

A 75 kg box slides down a 25 degree ramp with an acceleration of 3.60 meters per second squared. Find the coefficient of kenetic friction between the box and the ramp. What acceleration would a 175 kg box have on this ramp?

*asked on November 3, 2010* -
## Math

a family budgets 1/2 of its income for housing and 1/3 for food what fraction of their budget do these expenses cover

*asked on October 18, 2016* -
## Civics

The way good leaders can protect the interest of their followers

*asked on June 27, 2019* -
## Math

The 3rd and 9th term of a g.p are 54 and 39,336 respectively.find the 6th term,sum of 4th term,sum of 4th and 7th term and product of 2nd and 5th term

*asked on October 30, 2018* -
## History

Why was the act of toleration enacted? A To ensure African Americans could Maintain their own religious practices B To provide freedom of religion for the Jews C To retain a separation between the church and state D To safeguard freedom of worship to

*asked on October 6, 2016* -
## pre-algebra

the scale on a map is 1 cm: 7 km. if two cities are 15 cm apart on a map, what is the actual distance in the cities?

*asked on December 5, 2018* -
## Electrochemistry

Ag2CrO4(s) + 2e- 2Ag(s) + CrO42-(aq) A chemist wishes to determine the concentration of CrO42- electrochemically. A cell is constructed consisting of a saturated calomel electrode (SCE; which has a reduction potential of 0.242 V relative to the SHE) and a

*asked on May 20, 2008* -
## Physics

A green car with a mass of 900 kg is placed in the back of a yellow tow truck that has a pivot at one end. The car is held in place with a chain at the top end of the lift, as pictured below. The chain holding the car in place can withstand a maximum force

*asked on September 15, 2018* -
## physics

a spring of force constant 1500N/m is acted upon Hy a constant force of 75N .calculate the potential energy stored in the spring

*asked on December 21, 2015* -
## Physics

A football player kicks a football with an initial velocity of 30m/s at an angle of 55 degrees relative to the flat ground. a)what is the speed of the football at its highest point b)find the highes point reached c)find the total time in the air d)how far

*asked on December 13, 2009* -
## Physics

A small block of mass m = 1.3 kg slides, without friction, along the loop-the-loop track shown. The block starts from the point P a distance h = 54.0 m above the bottom of the loop of radius R = 19.0 m. What is the kinetic energy of the mass at the point A

*asked on December 24, 2013* -
## math

what is 84 over 100 in simplest form? If i had a calculater i could help you but i can't do it on paper hit me up this is shawn and help me with my problem I don't know what you call simplest form? 84/100 could be written as 0.84. If you want it reduced to

*asked on January 31, 2007* -
## Algebra

2. The Sugar Sweet Company is going to transport its sugar to market. It will cost $4200 to rent trucks, and it will cost an additional $150 for each ton of sugar transported. Let C represent the total cost (in dollars), and Let S represent the amount of

*asked on August 18, 2011* -
## solving two-step inequality

Translate the following inequality into written language. 5x-6

*asked on June 9, 2015* -
## Physics

A car is traveling North. In which direction are the wheels turning. This is under the torque chapter

*asked on October 24, 2015* -
## Reposting chemistry help!!!

A metal x forms two different chloride.if 12.g of chloride A and 16.3g of chloride B contain 7.1g and 10.7g of chlorine respectively,show that the figure agree with the laws of multiple proportions.write there formulea plz i need the working.....

*asked on January 12, 2016* -
## math

Look at the numbers below. 75, 74, 72, 69, 65 A: describe the pattern

*asked on November 6, 2014* -
## physics

*asked on February 19, 2012* -
## Algebra 2 math

In triangle GHI, angle H is a right angle, GH = 40, and cos G= 40/41. Draw a diagram and find each value in fraction and in decimal form. a) Sin G b. Sin I c. Cot G d. csc G e. cos I f. sec H - I have no idea how to do this

*asked on April 8, 2015* -
## Physics

A liquid (density = 1.65 g/cm^3) flows through two horizontal sections of tubing. In the first section the cross-sectional area is 10.0 cm^2, the flow speed is 275 cm/s, and the pressure is 1.20 x 10^5 Pa. This tubing then rises 50 cm to the second

*asked on November 11, 2010* -
## Chemistry

What is the number of grams of Hydrogen in 5.45 x 10^22 molecules NH3?

*asked on October 9, 2010* -
## Physics

A cheetah running at 30 m/s is pursuing a zebra going in a straight line at 14 m/s. If the zebra has a 35 m head start, how much time does it take for the zebra to catch up? (Please show all work. I know the answer, but I need the step by step instruction

*asked on January 30, 2012* -
## life orientation

how can sports detract nation building

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

Butanoic acid (Ka = 1.52 x 10-5) has a partition coefficient of 3.0 (favouring benzene) when distributed between water and benzene. Find the concentration of butanoic acid in each phase when 20.0 mL of 0.10 M aqueous butanoic acid is extracted with 25 mL

*asked on January 19, 2015* -
## physics

In a water park, people walk up a ramp before diving into the water below. If they cover a horizontal distance of 100 meters before diving down 50 meters, what is the angle made by the ramp with the ground?

*asked on March 25, 2014* -
## Physics

A rubber ball filled with air has a diameter of 25.0 cm and a mass of 0.540 kg. What force is requiered to hold the ball in equilibrium immediately below the surface of water in a swimming pool? Start equation out by using sumF = ma Answer is 74.9 N I just

*asked on November 11, 2010* -
## chemistry

What are the freezing point and boiling point of an aqueous solution of 15.5 g glucose(C6H12O6) dissolved in 150 g of water?

*asked on April 7, 2013* -
## physics

A rectangle has a length of 2d and a height of d. Each of the following three charges is located at a corner of the rectangle: +q1 (upper left corner), +q2 (lower right corner), and -q (lower left corner). The net electric field at the (empty) upper right

*asked on February 22, 2012* -
## math

A kayaker paddles across a river at a constant speed of 4 miles per hour and a bearing of N 60 degrees E. Which current vector results in the kayaker's actual speed being 5.9 miles per hour and the kayakers actual direction being N 70 degrees E.

*asked on July 3, 2013* -
## chemistry

what is the molar solubility of AgBr(s) in 3.0M NH3(aq)? Ksp of AgBr(s) is 5x10^-13, Kf of Ag(NH3)2+ is 1.6x10^7

*asked on December 3, 2018* -
## Chemistry

For the reaction of hydrazine (N2H4) in water, Kb is 3.0 10-6. H2NNH2(aq) + H2O(l)--> H2NNH3+(aq) + OH-(aq) Calculate the concentrations of all species and the pH of a 1.6 M solution of hydrazine in water. [OH-] = [H2NNH3+] = [H2NNH2] = [H+] = pH =

*asked on February 3, 2013* -
## social studies

institutions that promote national unity

*asked on June 27, 2019* -
## calculus

Anti Derivative of F''(x) = 4 + 6x + 24x^2, f(0) = 3, f(1)=10 Not sure how to find the value of the constant for F'(x).

*asked on December 6, 2011* -
## 9th grade

s8impliy this exponential expression): -2 7 -8 ) 6 -9)8 (7) * (x) * (w * (x *(4) * -3) (w

*asked on January 6, 2010* -
## math

Suppose a white dwarf star has a diameter of approximately 1.6692x10^4 km. Us the formula 4pie^2 to find the approximate surface area of the star

*asked on November 15, 2010* -
## MIPS Assembly programming

Hi there, I need to implement in assembly mips an iterative binary search method. Here's my code: # this program implements binary search # the equivalent pseudo code is the following: # first = 0 # last = size -1 # while (last - first > 1) { # mid =

*asked on January 7, 2012* -
## math

1) A rancher wants to enclose two rectangular areas near a river, one for sheep and one for cattle. There is 240m of fencing available. Express the area of the enclosures as a function of its dimension.

*asked on April 5, 2013* -
## math

a plumber charges $25 for service call plus $50 per hour what is the cost 8 hours? What is 10 hours?

*asked on May 17, 2016* -
## Pysics

Realizing that she often doesn't have her students' full attention during class, a professor devises an elaborate device on which to stand while she lectures. The pulley is placed so that the string makes a 45.0-degree angle with the beam. The beam is

*asked on January 5, 2012* -
## Algebra

There are 46 flags in a zoo exhibit. Every animal has either two or four legs. List 2 possible choices for the number of each type of animal in the exhibit. The number of two-legged animals is two more than a number of four-legged animals. How many of each

*asked on October 30, 2019* -
## History

Identify another name given to the Muslim invaders.

*asked on February 25, 2015* -
## English

Identify the complete adjective clause and the word it modifies. I elected to take astronomy, which is not a required course.

*asked on June 9, 2011* -
## Trigonometry

a boy standing 70m away from a flag–post observes that the angles of elevation of the top and bottom of the tower on top the flag–post are 70^ and 69^ respectively. Find the height of the tower

*asked on October 23, 2017* -
## math

1) A rancher wants to enclose two rectangular areas near a river, one for sheep and one for cattle. There is 240m of fencing available. Express the area of the enclosures as a function of its dimension. No there is no common side (lets say.) Thanks

*asked on April 5, 2013* -
## Math

Amanda increase the amount of protein she eats every day from 48 g to 54 g. By what percentage did amanda increase the amount of protein she eats?

*asked on March 21, 2017* -
## Algebra

Find the numbers that each letter stands for. EFGHx4=HGFE E= F= G= H=

*asked on October 30, 2011* -
## Math

Peter has 4 more $50 bills than $10 bills in his wallet. If the total amount of money in his wallet is $380, how many $10 bills does Peter have? I know the answer but I don't know how to set up the equation.

*asked on February 24, 2016* -
## math

Suppose the mean length of time that a caller is placed on hold when telephoning a customer service center is 23.8 seconds, with standard deviation 4.6 seconds. Find the probability that the mean length of time on hold in a sample of 1,200 calls will be

*asked on February 21, 2019* -
## Physics

One end of a spring is attached to the ceiling. The unstretched length of the spring is 10.0 cm. A 2.0 kg mass is hung from the other end of the spring. It is slowly lowered until it comes to rest. At this point the spring is 15 cm long. (a) What is the

*asked on November 23, 2015* -
## math

What is the order of 1.5 x 10^3, 1.4 x 10^-1, 2 x 10^3, and 1.4 x 1-^-2 from least to greatest?

*asked on November 15, 2010* -
## english

_____ describes the life cycle of a star.

*asked on March 8, 2017* -
## Physics

Realizing that she often doesn't have her students' full attention during class, a professor devises an elaborate device on which to stand while she lectures. The pulley is placed so that the string makes a 45.0-degree angle with the beam. The beam is

*asked on January 5, 2012* -
## Math

Solve the system using elimination. 10y − 2x = 50 6x − 3y = 12 A. (5, 6) B. (2.1, 0.2) C. (2.1, 4.6) D. (6, 5)

*asked on January 5, 2016* -
## Chemistry (Acid-Base)

Butanoic acid (Ka = 1.52 x 10-5) has a partition coefficient of 3.0 (favouring benzene) when distributed between water and benzene. Find the concentration of butanoic acid in each phase when 20.0 mL of 0.10 M aqueous butanoic acid is extracted with 25 mL

*asked on January 21, 2015* -
## physics

A person is standing on and facing the front of a stationary skateboard while holding a construction brick. The mass of the person is 87.0 kg, the mass of the skateboard is 4.10 kg, and the mass of the brick is 2.50 kg. If the person throws the brick

*asked on January 15, 2015* -
## American Government

Representing the state in lawsuits and trials is the responsibility of which state official? A. attorney general B. treasurer C. governor D. secretary of state

*asked on November 2, 2017* -
## Science

What letter represents the nucleus of a cell?

*asked on January 7, 2009* -
## Chemistry

Assume that a reaction occurs in which unknown substances R and S react to form unknown substances T and U. From the information below, determine the mass of substance T that will be formed if 45.0 grams of substance R reacts with 23.0 grams of substance

*asked on May 20, 2008* -
## physics (Right Hand Rule Question)

A proton traveling due east in a region that contains only a magnetic field experiences a vertically upward force away from the surface of the earth. What is the direction of the magnetic field? a)North b)East c)South d)West e)Down I know I need to use the

*asked on February 17, 2012* -
## Math

A cylindrical water tank is 70cm in diameter to begin with it is full of water a leak starts in the bottom so that it looses 10 litres every 1 hour how long will it take for the water level to fall by 20cm.

*asked on June 10, 2016* -
## ellipses

If the major axis is vertical and has a length of 10 units,the minor axis has a length of 8 units,and the center C=(4,-2).Fill in the missing denominators for the equation and determine the distance from C to the foci (c).

*asked on May 11, 2012* -
## math

use your calculator.show 14. broken keyr is 1. show 2 ways

*asked on September 21, 2011* -
## math

Which of the following sets of ordered pairs is not a direct variation? (0, 0); (-2, 4); (3, -6) (1, 1); (-2, -2); (3, 3) (10, 2); (15, 3); (20, 4) (0, 0); (1,

*asked on May 19, 2011* -
## grammar

I have to write 1234.567 in English word form. How do I write this number?

*asked on May 3, 2011* -
## Statistics

As standard deviation increases, samples size _____________ to achieve a specified level of confidence. A. Increases B. Decreases C. Remains the same

*asked on October 21, 2010* -
## algbra

According to some students, what is the true purpose of homework

*asked on November 16, 2010* -
## math

A double recipe of cookies calls for 5 cups of flour. Which of the following proportions could be used to find the amount of flour for a triple recipe? 5/2= f/3 2/5=f/3 2/3 = f/5 3/2=5/f

*asked on May 19, 2011* -
## chemistry

A buffer is prepared by adding 300.0 mL of M NaOH to 400.0 ML of 2.0 M CH3COOH. What is the pH of this buffer? ks=1.8X10^-5

*asked on March 4, 2012*