Wednesday

October 1, 2014

October 1, 2014

Total # Posts: 1,112

**physics**

Find the value of the magnetic field necessary to cause a proton moving at a speed of 2.50 ×10^3 m/s to go into a circular orbit of 15.5-cm radius. An electron has an energy of 100 eV as it enters a magnetic field of 3.50 × 10−2 T. Find the radius of the ...
*July 24, 2011*

**English**

Sorry. I think it might be a cliche?
*July 16, 2011*

**English**

"Beauty if only skin deep" is an example of ? A. personification. B. hyperbole. C. a generalization. D. a cliche
*July 16, 2011*

**physics**

How long will it take an echo to return across a canyon that is 61.0 m from one side to the other if the temperature is 25 C?
*July 12, 2011*

**ACC 105**

Employee Form W-2 Information Roach, Kelly Volpe, Ralph Myer, Randi Ford, Kenneth Carmen, Chrissy Zuber, Hal 1. Wages, tips, other compensation 2. Federal income tax withheld 3. Social security wages 4. Social security taxes withheld 5. Medicare wages and tips 6. Medicare tax...
*July 7, 2011*

**chemistry**

give the full, ionic and net equations for the reaction (if any) that occurs when aqueous soulutions of Na2CO3 and MgCl2 are mixed.
*July 4, 2011*

**physics**

A parachute reaches terminal velocity. F drag Fg=850N what is the value of F drag? What is the net force? What is the acceleration? Are the forces balanced or unbalanced?
*June 29, 2011*

**english**

If you could create a time capsule. what valuable things or memories would you put in it? Note you won't open it for 10 years
*June 15, 2011*

**Science**

how would you make 1 molar solution using 4 molar solution and pure water?
*June 9, 2011*

**MATH**

I NEED HELP WITH FINDING THE FORMULA FOR PROBLEMS DEALING WITH RADIUS AND DIAMETER. The radius is 12 in and the diameter is 4 in.
*June 5, 2011*

**math**

i need help with finding out what formula do you use to find the B= area of base. I need to know also how to multiply by height. ( B= L.W B=9.9) WHAT COMES NEXT 5FT IS THE HEIGHT.
*June 5, 2011*

**excel graphing**

Thank you so much i think i've got it
*May 31, 2011*

**excel graphing**

In cell E18, use an appropriate formula to calculate the grand total of column E. Format the result in the Currency style. In column F (cell ranges F5:F16), use an appropriate formula to calculate the percentage of the grand total for each type of office supply. Format the ...
*May 31, 2011*

** F6:F16 **

the answer they gave me was 14% and i am suppose to figure out the formula but i still cant i did 2.99/521.07< which is the grand total at the end of column f16 i still did not get 14
*May 31, 2011*

**excel graphing**

Im trying to find the percent of a grand total. Total cost 74.75,cost/unit 2.99, number of units 25 I'm still dont understand how to get the percent ive tried everything i divided 2.99/74.85 and got 4% but the answer is 14% they give you the answer but i have to show the ...
*May 31, 2011*

**excel graphing**

In column F (cell ranges F5:F16), use an appropriate formula to calculate the percentage of the grand total for each type of office supply. Format the results in the Percentage style. If necessary, decrease the decimal places to round the results to the nearest whole percent. ...
*May 31, 2011*

**social studies**

I still kinda dont get it.
*May 26, 2011*

**social studies**

TRUE OR FALSE:are river valleys, basins, and coastal plains of east asia among the most sparsely populated places on earth?
*May 26, 2011*

**please help**

Thank you
*May 26, 2011*

**excel graphing **

sorry*
*May 26, 2011*

**please help**

In cell D21, type the formula to calculate the % change from January to February. That formula is: =(J18-E18)/ABS(E18). Format the result in the Percentage style and decrease the decimal places if necessary to round the result to the nearest whole percent (569.46-521.07)/abs(...
*May 26, 2011*

**excel graphing**

In cell D21, type the formula to calculate the % change from January to February. That formula is: =(J18-E18)/ABS(E18). Format the result in the Percentage style and decrease the decimal places if necessary to round the result to the nearest whole percent (569.46-521.07)/abs(...
*May 25, 2011*

** 11th grade-math**

help me Use the Quadratic Formula to solve N2=6n
*May 24, 2011*

**excel graphing**

im still confused what would abs be?
*May 24, 2011*

**excel graphing**

In cell D21, type the formula to calculate the % change from January to February. That formula is: =(J18-E18)/ABS(E18). Format the result in the Percentage style and decrease the decimal places if necessary to round the result to the nearest whole percent (569.46-521.07)/abs(...
*May 24, 2011*

**Spanish 7th grade-Could someone help me, please?**

Yah dude your right it literally says "the day of the saint" what it means in Mexico, is that it derived from the Catholic Church, you did not celebrate your birth date, but your saint's day. You were given the name of a saint or the name of the saint that was ...
*May 23, 2011*

**Geometry**

Suppose a chord of a circle is 32 millimeters long and is 12 millimeters from the center of the circle. What is the circumference of the circle? btw.. thx fer yall tht answer these, aprichiate it. yall are fricken wizards.
*May 23, 2011*

**Geometry**

A wheel has a radius of 1 foot. to the nearest foot, how far will the wheel travel in 50 revolutions?
*May 23, 2011*

**algebra 2**

93log3.1+65
*May 23, 2011*

**computers**

The process of using or controlling two or more windows at a time is known as A. stacking. B. threading. C. hyperthreading. D. multitasking. i chose d
*May 22, 2011*

**chemistry**

Calculate the equilibrium constant for 2CH3OH(l)+3O2(g)->2CO2(g)+4H2O(l) by using standard reduction potentials?
*May 18, 2011*

**math**

At the beginning of the week, a particular stock sold for 29 3/8 per share. At the end of the same week it sold for 31 2/8. What was the amount of increase per share? A. 2 3/8 B. 2 1/8 C. 1 7/8 D. 2 5/8 can someone please help me i'm not good at fractions i chose c but im ...
*May 16, 2011*

**math**

Thank you so much
*May 16, 2011*

**math**

If you borrow $1,700 at 7% simple interest, how much interest will you pay? A. $1819 B. $119 C. $7.00 D. $120 I got b but im not sure
*May 16, 2011*

**math**

Thank you!
*May 14, 2011*

**math**

If you borrow $1,700 at 7% simple interest, how much interest will you pay? A. $7.00 B. $120 C. $119 D. $1819 1,700x0.07 i chose c but i wanted to make sure
*May 14, 2011*

**English**

Is conformity as much a problem in the twenty first century as it was in the nineteenth century....
*May 10, 2011*

**child care**

True or False: Open-ended questions require few decision-making skills
*May 10, 2011*

**History**

I have done research and cant really figure out what was significant about the Third.
*May 6, 2011*

**History**

What was significant about the Third Aliyah?
*May 6, 2011*

**History**

In what ways will climate change impact global society? Have to write a 4-5 page paper on this I am just needing some ideas. Thanks!
*May 5, 2011*

**constitution**

the police must have a __________ to search a person or his or her property
*May 4, 2011*

**Physics**

A uniform 22 kg door that is 2.5 m high by 0.80 m wide is hung from two hinges that are 20 cm from the top and 20 cm from the bottom. If each hinge supports half the weight of the door, find the magnitude and direction of the horizontal components of the forces exerted by the ...
*April 29, 2011*

**Physics**

A stationary 3.0-m board of mass 6.0 kg is hinged at one end. A force is applied vertically at the other end, and the board makes a 30° angle with the horizontal. A 40-kg block rests on the board 80 cm from the hinge as shown in the figure below. a) Find the magnitude of ...
*April 28, 2011*

**Trigonometry**

convert polar equations to rectangular coordinates. 1.) θ=π 2.) r=6 cos θ 3.) sec θ=2
*April 28, 2011*

**Math Word Problem**

jesse bought 6 one-quarter pound bags of grape.how many pounds of grapes did jesse buy ?
*April 27, 2011*

**chemistry**

I- is converted into I2 by the addition of an aqueous solution of KMnO4 to an aqueous solution of KI. What is the oxidation number assigned to I2??
*April 26, 2011*

**Physics 203**

An object is projected upward from the surface of the Earth with an initial speed of 4.6 km/s. Find the maximum height it reaches.
*April 26, 2011*

**Physics 203**

A satellite with a mass of 310 kg moves in a circular orbit 7.00*10^7 m above the Earth's surface. (a) What is the gravitational force on the satellite? (b) What is the speed of the satellite? (c) What is the period of the satellite?
*April 26, 2011*

**physics**

Two masses m1= 35.0 Kg and m2= 15.0Kg are connected by a mass less string over a smooth pulley (no friction), the mass m1 being on a horizontal frictionless table. The motion of the system involves m1 moving horizontally to the right and m2 vertically downward, both with ...
*April 23, 2011*

**math**

For 6z=126 mike wrote that z=756 explain what mikes mistake was then tell the cor4rect answer.
*April 14, 2011*

**Physics 203**

A 2.4 m long rod of mass m1 = 11.0 kg, is supported on a knife edge at its midpoint. A ball of clay of mass m2 = 5 kg is dropped from rest from a height of h = 1.1 m and makes a perfectly inelastic collision with the rod 0.9 m from the point of support. Find the angular ...
*April 13, 2011*

**Chemistry**

thank you!
*April 11, 2011*

**Chemistry**

Explain how t make 1.5L of a 2.25M solution of H2SO4 from 6.0M stock solution.
*April 11, 2011*

**Physics 203**

5m=1/2(5/7*(9.81*sin(theta))*((2.7*sqrt(1/2))^2)/((sqrt(5/7)-sqrt(1/2)))^2) All you need to do is solve for sin(theta) you do 5*((sqrt(5/7)-sqrt(1/2)))^2)*2*7/((5*9.81*((2.7*sqrt(1/2))^2)) sin(theta)=0.00746 then you do the inverse of sin(theta) to get your degree. degree ...
*April 9, 2011*

**Physics 203**

A hollow, thin-walled cylinder and a solid sphere start from rest and roll without slipping down an inclined plane of length 5.0 m. The cylinder arrives at the bottom of the plane 2.7 s after the sphere. Determine the angle between the inclined plane and the horizontal.
*April 9, 2011*

**Physics 203**

The system shown below is released from rest. The mb = 35 kg block is 2 m above the ledge. The pulley is a uniform disk with a radius of 10 cm and mass M = 5.0 kg. Assume that the string does not slip on the pulley. (a) Find the speed of the 35 kg block just before it hits the...
*April 6, 2011*

**Physics**

A hollow, thin-walled cylinder and a solid sphere start from rest and roll without slipping down an inclined plane of length 5.0 m. The cylinder arrives at the bottom of the plane 2.7 s after the sphere. Determine the angle between the inclined plane and the horizontal.
*April 6, 2011*

**Physics 203**

A hollow, thin-walled cylinder and a solid sphere start from rest and roll without slipping down an inclined plane of length 5.0 m. The cylinder arrives at the bottom of the plane 2.7 s after the sphere. Determine the angle between the inclined plane and the horizontal.
*April 6, 2011*

**Physics 203**

A wheel has a thin 2.7 kg rim and four spokes each of mass 1.3 kg. Find the kinetic energy of the wheel when it rolls at 6.0 m/s on a horizontal surface.
*April 6, 2011*

**Physics 203**

A 4 kg block resting on a frictionless horizontal ledge is attached to a string that passes over a pulley and is attached to a hanging 2 kg block. The pulley is a uniform disk of radius 13.0 cm and mass 0.50 kg. (a) Find the speed of the 2 kg block after it falls from rest a ...
*April 6, 2011*

**Physics 203**

A 1.3-kg 10-cm-diameter solid sphere is rotating about its diameter at 77 rev/min. (a) What is its kinetic energy? (b) If an additional 5.0 mJ of energy are supplied to the rotational energy, what is the new angular speed of the ball? rev/min
*April 6, 2011*

**Physics 203 ( College)**

Equation: I=M*L^2 M is the mass of the object. I is the moment of inertia. L is the length squared or radius squared. I=(2.5^2(m2+m1))+ (2.5^2(m2+m3)) I= 6.25*(9)+6.25*(9) I=112.5 kg*m^2
*April 4, 2011*

**Physics 203 ( College)**

Four particles, one at each of the four corners of a square with 2.5-m-long edges, are connected by mass less rods. The masses of the particles are m1 = m3 = 2.0 kg and m2 = m4 = 7.0 kg. Find the moment of inertia of the system about the z axis.
*April 4, 2011*

**Physics 203 ( College)**

I don't know how to find ac, but I can help you with at and angular velocity of the disk. (a) (7.8 rad/s^2)/4.0s = 31.2=angular velocity at=7.8*.12=0.936
*April 4, 2011*

**Physics 203 ( College)**

A disk of radius 12 cm, initially at rest, begins rotating about its axis with a constant angular acceleration of 7.8 rad/s2. What are the following values at t = 4.0 s? (a) the angular velocity of the disk (b) the tangential acceleration at and the centripetal acceleration ac...
*April 4, 2011*

**Chemistry**

What is the minimum amount of ice (at 0 degress C) that must be added to 250mL of water at 23 degrees C in order to cool it to 0 degrees celsius? (Density of water= .98 g/cm^3; heat of fusion= 333J/g; heat capacity of water= 4.184J/g C; and heat capacity of ice= 1.86 J/g C)
*April 3, 2011*

**Math**

idk
*March 31, 2011*

**math 4th grade**

the corrct answer is 4,000,000
*March 30, 2011*

**Physics 203 **

A puck of mass 0.60 kg approaches a second, identical puck that is stationary on frictionless ice. The initial speed of the moving puck is 5.0 m/s. After the collision, one puck leaves with a speed v1 at 30° to the original line of motion. The second puck leaves with speed...
*March 29, 2011*

**English**

Oh. So on the first sentence, would the adverb be certain?
*March 28, 2011*

**English**

What is the adverb in these sentences? I got the answer, but can you check? In the past, scientists did not have much information about certain animals. Adverbs: Past, much With modern technology that has already changed. Adverbs: modern, already A cat will angrily claw. ...
*March 28, 2011*

**Math**

1) There are 3 adults per 15 students, so you can make a ratio 3adults/15students. 2) Next, set up the second ratio and combine where 3adults/15students = X/125students. X is the number of adults needed. 3) Arrange the equation by cross muliplying and you get 375 = 15X 4) X= ...
*March 24, 2011*

**6th grade math**

1) The first part of the of the problem means that for every 10 gallons of gas, you can drive 240 miles. 2) You can make a ratio where 240mi/10gal = 216mi/Xgal. 3)Then cross multiply to get 240X=2160. 4) X = 9gal
*March 24, 2011*

**math**

from 4 feet above a swimming pool, susan throws a ball upward witha velocity of 32 feet per second. how long does it take the ball to reach the water?
*March 24, 2011*

**Trigonometry**

rewrite the expression in terms of the first power of cosine. cos^3(x)sin^4(x)
*March 23, 2011*

**Math**

rewrite the expression in terms of the first power of cosine. cos^3(x)sin^4(x)
*March 22, 2011*

**Math**

Rewrite the expression in terms of the first power of cosine sin^4(x)
*March 22, 2011*

**Math**

if I have sin(6x)+cos(6x)how would I write it in terms of sin only?
*March 22, 2011*

**Trigonometry**

Yeah I got the exact value I just needed it in trigonometric function of one number which would be the degrees of cos. Thanks!!!
*March 22, 2011*

**Trigonometry**

cos(20 degrees+70 degrees) i mean
*March 22, 2011*

**Trigonometry**

so it would be cos(20+70)?
*March 22, 2011*

**Trigonometry**

ok I made a mistake in the formula. it's cos(20 degrees)cos(70 degrees)- sin(20 degrees) sin(70 degrees). so it's a subraction equation not an addition.
*March 22, 2011*

**Trigonometry**

Write the expression as a trigonometric function of one number. (cos 20 degrees)(cos 70 degrees)+(sin 20 degrees)(sin 70 degrees)
*March 22, 2011*

**acc. alg 2**

i dnt get bwat u did after x^2+5x-21=0. that is were i keep gettin stuck on
*March 20, 2011*

**acc. alg 2**

exponentiating to solve equations: solve the eaquation, cheack for extraneous solutions log5(x+4)+log5(x+1)=2
*March 20, 2011*

**English**

I have to write a story in the perspective of a 2 year old and I need a plot for the story. Any suggestions?
*March 20, 2011*

**Chemistry**

Use the chemical reaction below to answer the questions that follow. CuO(s) + H2(g) → Cu(s) + H2O(g) a. What is the limiting reactant when 19.9 g CuO react with 2.02 g H2? b. The actual yield of copper was 15.0 g. What is the percentage yield? c. How many grams ...
*March 16, 2011*

**math**

2x=x+3
*March 16, 2011*

**high school chem**

How many grams of a stock solution that is 92.5 percent h2s04 by mass would be needed to make 250 grams of a 35% by mass solution?
*March 9, 2011*

**math**

order from least to the greatest 3/10,4/5,18,20,1/20,7/10
*March 9, 2011*

**math**

fixed installment loan of $13,500 with 60 months to pay back, monthly payments of $280.24. instead of making 36th payment, pays remaining balance on loan. how much interest saved? use acturial method u= n*p*v/100+v
*February 27, 2011*

**math**

you intend to create a college fund for your baby. if you get an interest rate of 5.3% compounded monthly and want the fund to have $123,875 after 17 years, how much needs to be deposited each month? and 1 more jessica used a fixed installment loan from bank. she borrowed $13,...
*February 27, 2011*

**APUSH**

in the late nineteenth century: how could trusts purchase a senate seat? what were the sympathies of the national government like?
*February 27, 2011*

**Math**

Need to calculate the amount of building and finishing materials that you must purchase for your room. Purchases must include: Flooring Wall covering/treatment Baseboards, casing, trim Ceiling lighting In order to calculate these amounts, you must consider the following: •...
*February 24, 2011*

**physics**

A skier starts from rest 7m above the horizontal and slides down a frictionless slope the skier then hits a rough horizontal surface (uk= 0.3), How far does the skier travel along the rough surface before she stops?
*February 19, 2011*

**science**

I beleive it has something to do with cognitive
*February 18, 2011*

**world literature **

list two of the red herrings that The Thinking Machine sets up for the warden in "The Problem of Cell 13"
*February 16, 2011*

**THE AGE OF DISCOVERY TO THE AMERICAN EXPERIMENT**

. Which of the following best describes the Columbian Exchange that occurred during the Age of Discovery? A. It was a genetic shift due to population interbreeding. B. It was a cultural transformation. C. It was a religious transformation. D. It was an exchange of trade foods.
*February 16, 2011*

**algebra**

the y-coordinate of a point decreased by 3 times the x-coordinate is greater than or equal to 2. what is that written as an equation?
*February 15, 2011*

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