Wednesday

July 27, 2016
Total # Posts: 252

**Physics**

VERY URGENT- A kicked ball takes off at 25m/s at an angle with the ground. If the goal is 50m away and the horizontal bar is 3.44m above the ground, what must be the elevation angle for the kicker to score a goal?
*February 26, 2014*

**math**

From a survey of 100 college students, a marketing research company found that 65 students owned iPods, 35 owned cars, and 25 owned both cars and iPods. (a) How many students owned either a car or an iPod (but not both)?
*January 14, 2014*

**chemistry**

will iron rust if it is placed in a test tube of ethanol acid with no water inside. Explain
*December 12, 2013*

**physics**

I am having a bit of trouble with this one. A safety harness is connected to a cable with a report breaking stress of 800MNm-2. What mass could be hung from a harness if the diameter of the cable was 6mm?
*October 19, 2013*

**math**

In the figure, p || q and r is the transversal. If OA and OB are bisectors of the interior angles, which of these describes angle AOB?
*October 16, 2013*

**ece**

its b cuz of course you cant read unless you know how to sound out words
*October 14, 2013*

**physics**

dont get it
*October 14, 2013*

**physics**

A cube of balsa wood (side length = 0.25 m) is tied with a string to the bottom of a waterfilled container. The wood is completely immersed. What is the tension in the string?
*July 29, 2013*

**chemistry**

the molarity of 2% by weight of aqueous solution of H2S4(molecular weight = 98)
*July 5, 2013*

**science**

5.0g of magnesium metal reacted with 1000cm3 of 4.5M HCl solution to produce hydrogen gas. Calculate the amount of HCl left after the reaction
*June 29, 2013*

**Chemistry**

Wha volum of steam is produced when log of propyrie is burnt in excess oxygen at s.t.p?
*June 21, 2013*

**physics**

2 balls of clay , the first of mass 0.5kg,the other of mass 0.75kg approach each other ,each travels with a velocity of 0.5m\s,after the collision they stick together,what is the total energy after collision .Obtain the coefficient of restitution.
*June 3, 2013*

**math**

the bearing of Y from X is 160¤ and the bearing of Z from Y is 060¤. find the bearing of X from Z.
*May 11, 2013*

**math/physics**

Estimate the percentage savings in the fuel bill if the thermostat is set back from 68 degrees F to 50 degrees F for 12 hours of the day, and left at 68 degrees F for the other 12 hours, assuming an outside temperature of 15 degrees F all day.
*April 26, 2013*

**L.O**

5 ways in which the human or environmental problem impacts on the community.
*April 20, 2013*

**Math**

A track of mass 1000 kg travelling on a straight level road accelerates from a speed of 10 m/s to a speed of 30 m/s in 12 seconds. Given that the engine of the track exerts a constant pull of magnitude P N and that there is a constant resistance to motion of 200 N, find the ...
*April 17, 2013*

**Science**

abiotic
*April 2, 2013*

**Maths**

The solution is about the number of divisors of each number from 1 to 99 and we will exclude 100 as he said they should be positive integers. so we will add them to get 473. A quick formula to calculate the number of divisors is for example 18=2^1 * 3^2 then no.of divisors ...
*April 2, 2013*

**math 6 grade**

If the base is 12cm and a height of 15cm then the area is?
*April 1, 2013*

**math 6 grade**

if the height of a triangle is 28cm and the base is 16cm then what is the area?
*April 1, 2013*

**Physics 11 - Dynamics**

While standing on a horizontal frictionless surface a 50.0 kg student pushes against a wall with an average force of 125 N to the right for 0.110 s. Calculate the velocity of this student at 1.110 s. My answer: Vf = 0.275 m/s My solutions book has Vf = -0.275 m/s OR 0.275 m/s ...
*March 19, 2013*

**Physics 11 **

If two objects weighing 5 kg and 7 kg are dropped from a height of 64 m and 36 m, respectively. What will be the ratio of times taken to reach the ground? Thanks.
*March 13, 2013*

**Physics 11**

Displacement is given by x=2+3t+4t². Find the value of instantaneous acceleration.
*March 13, 2013*

**Physics 11**

Great. Thanks a lot.
*March 13, 2013*

**Physics 11**

A man jumps from a great height and falls freely to the Earth. Another man jumps from the same height 1 s later. How much are the two men separated by, 2 s after the second man jumps? I'm not sure exactly how to tackle this question. I'm sure I'm making it more ...
*March 13, 2013*

**scale drawing**

1cm^2 ----
*February 18, 2013*

**physics**

The relative Density of an alloy is 65.(a) find the mass of a solid alloy cube of side 20cm.(b) what vol of the alloy has a mass of 13kg? Please explain in details
*January 31, 2013*

**science**

An empty relative density bottle weighs 25g.it weighs 65g when filled with a liquid and 75g when with water.caculate the density of the liquid.
*January 31, 2013*

**algebra**

Determine whether or not the relation is a function. (-3,6), (-2,7, (-1,8), (0,9)
*January 26, 2013*

**physics**

A block of mass 2 kg is connected to a freely hanging block of mass 4 kg by a light and inextensible string which passes over pulley at the edge of a table. The 2 kg mass is on the surface of the table assumed to be smooth. Calculate the acceleration of the system and the ...
*January 12, 2013*

**Math**

The scale on a globe is 1/8 of an inch equals 125 miles. How many inches is the circumference of the globe if the diameter of the Earh is 7,926.41 mi?
*December 17, 2012*

**Algebra**

A rectangle is drawn so the width is 7 inches longer than the height. If the rectangle's diagonal measurement is 46 inches, find the height.
*December 13, 2012*

**science**

what is the alelles of a tall plant.
*November 27, 2012*

**physics**

23.4
*November 27, 2012*

**Physics**

A person pulls a crate with 120 N of force against 100 N of friction a distance of 5 meters. Find the energy the person expends pulling the crate, the amount of energy converted to heat via friction, and the increase in the kinetic energy of the crate.
*November 20, 2012*

**math**

f(24)=1/2(24)+5
*October 29, 2012*

**ap chemistry :(**

consider the reaction C6H14 + 9.5O2 yields 6CO2 + &H2) at constant pressure. which response is true? 1. work may be done on or by the system as the reaction occurs, depending upon the temperature. 2. work is done on the system as the reaction occurs. 3. no work is done as the ...
*October 18, 2012*

**College Physics**

Assuming that accelerations is constant, Given: a=15 ms^-2, s=14.1 m Applying kinematics equation, v^2 = u^2 + 2as Find for u since v is 0, u= sqrt(2 x -15 x -14.1) = 20.78 Solve for t, s= ut + 0.5at^2 14.1= 20.78t + 0.5(15)t^2 //Solve quadratic eqn for t t= 0.564(Ans), -3.33(...
*October 8, 2012*

**Math**

how did you get 4/5 lan?
*October 4, 2012*

**Math**

Use a ratio to compare the values. Simplify the ratio. 5 m to 100 cm the ansere is 5:1 those questions are from k12
*October 4, 2012*

**math**

what is 3/4 of paper in inches when 100 sheet of paper equal 3/10 inches
*September 17, 2012*

**Precalculus**

Assume the two planes are heading 'towards P'. For now, let's not get too wound up about the x and y aspects. We'll always 'know' the two places are at right angles to each other. First let's create two equations that represent the 'location'...
*September 9, 2012*

**American Government**

Voice. It was a public process but was done by voice.
*July 24, 2012*

**math**

a wheel is making 300rev/min about its center, calculate the angular velocity of any point on the wheel about the center. also find the speed of a point at a distance of 2cm from the center.
*June 24, 2012*

**maths**

at a given instant two cars are at distances 300 and 400m from the point of intersection O oftwo straight roads crossing at a right angle and are approaching O at uniform speeds of 20 and 40m/s respectively. find the shortest distance between the cars and the time taken to ...
*June 24, 2012*

**maths**

two ships are steaming in opposite directions at 30 and 40km/h respectively, and when they are directly abeam a shot is fired from one. if the gun at rest gives a muzzle velocity of 800m/s. find the direction in which it must be fired to hit the other ship. gravity being ...
*June 24, 2012*

**math**

what rate of annual simple interest is equivalent to 9% per annum compounded semi-annually for 3 years
*June 24, 2012*

**Geometry**

If measures of two complementary angles are in the ratio 1 : 5. What are the degree measures of the two angles? Thanks :)
*May 14, 2012*

**How do you**

Thankyou very much :)
*May 3, 2012*

**How do you**

Write the standard equation for the circle center (–6, –8), that passes through (0, 0). How would someone do this? I have been looking through all my notes from class and I dont understand how to do it.
*May 3, 2012*

**math**

72/8=9 He has spent 1 out of 9 so he has 8/9ths of his money left.
*May 3, 2012*

**geometry**

A park maintenance person stands 16 m from a circular monument. Assume that her lines of sight form tangents to the monument and make an angle of 47°. What is the measure of the arc of the monument that her lines of sight intersect? Please don't just answer it tel me ...
*May 3, 2012*

**Geometry**

100*3= 300 Senior tickets 150*2=300 Junior Tickets 300*1=200 Sophomore Tickets 800 Total 300/800 chance 3 out of 8.
*May 3, 2012*

**math grade 11**

Y=x+4
*April 28, 2012*

**Math**

yo wazzup so can you guys help me with this one problem? Thanks a bunch! Problem: Draw a circle whose center is at (1,2) so that the point (1,5) is a point on the circle. What is the circumference of the circle. I don't get those problems!
*April 25, 2012*

**Geometry**

Thankyou so much, and thanks for telling me how to do it. :)
*April 2, 2012*

**Geometry**

The area of a regular octagon is 35 cm². What is the area of a regular octagon with sides three times as long?
*April 2, 2012*

**Math**

Which angle is complementary to(CBS?
*March 13, 2012*

**math**

if z(t) = 60 * 1.03^t, find t when z(t) =144
*February 19, 2012*

**geometry**

An animal shelter has 22 cats and 16 dogs. Write the ration of dogs to cats as a fraction in lowest terms.
*February 3, 2012*

**Chemistry**

If 35cm cube of gas is heated from 14 degree celsius to 55 degree celsius.what is the new volume?
*January 29, 2012*

**math**

Find the Range of the following relation y=a^2x-ax^2, x≥1/2a, a<0
*January 27, 2012*

**math**

hi I THINK THE ANSWER IS 569
*January 4, 2012*

**Economic**

templeeeeeeeeeeeeeeeeeeeeee
*November 17, 2011*

**chemistry**

A 130.0 mL buffer solution is 0.100 M in NH3 amd 0.135 M in NH3 and 0.135 M in NH4Br. What mass of HCI could this buffer neutralize before the pH fell below 9.00?
*November 6, 2011*

**algebra**

A rectangular piece of cardboard measures 17cm by 14cm. Strips of equal width are cut off one side and one end. The area of the remaining piece is 108cm^2. Find the width of the strips removed.
*October 28, 2011*

**science**

Scientists performed an experiment to determine whether there is a connection between learning ability and food. They took two groups of 20 mice each, all from the same purebred strain. The mice were deprived of food for 3 days and then given a standard learning session in ...
*October 23, 2011*

**english**

what is the plural from of "child"
*October 12, 2011*

**free will baptiste**

i am trying to help my daughter with home work but dont understand question. Show 30, Broken Key is 3. Show several ways. if am able to solve one i can help her to the rest.
*September 28, 2011*

**history**

Was the Declaration of Independence a conservative or liberal document? According to the 18 century definition of conservative and liberal.
*September 27, 2011*

**math**

If 12a=6 tens. Find a
*September 24, 2011*

**chemistry**

a) How many micrometers make 0.4 m? b)How many µg in 4.732 mg?
*September 13, 2011*

**physics**

need help with tthe first question on this page!!! please mail.rdcrd.ab.ca/~smolesky/FOV1-000293AF/5Matter/PracticeWritten.pdf
*May 24, 2011*

**math**

-216
*May 20, 2011*

**physics**

Light falls on a photoelectric surface that has a work function of 2.90 eV. If the voltage required to stop the ejected electrons is 0.210 V, what is the wavelength of the incident radiation?
*May 10, 2011*

**geometry**

Two sides of a triangle measure 8 and 15. How many integer values can be assigned to the third side so that all the angles in the triangle are acute?
*April 18, 2011*

**economics**

some study guide questions i am stumped on 1 uncertainty about the future is likely to a increase current spending b either increase or decrease c decrease current spending d no impact on current spending think it's d 2 as the general price level increases the amount of ...
*April 15, 2011*

**chemistry**

a) Aluminum Chloride has a universal indicator color of red and the Ph of 4.0 b) Sodium Carbonate has a universal indicator color of violet and the Ph of 9.5. c) Ammonium Acetate has a universal indicator color of green and the Ph of 7.5 For the following salts give an ...
*March 15, 2011*

**social studies**

what did the dutch call their colony in north america
*March 9, 2011*

**math**

16-8=8=4x4=16
*March 8, 2011*

**Chemistry**

If a solution is made by mixing 50.0 moles of KOH to 3.4 kilograms of water, what is the solutions molality?
*February 26, 2011*

**Chemistry**

If a solution is made by mixing 50.0 moles of KOH to 3.4 kilograms of water, what is the solutions molality?
*February 26, 2011*

**Chemistry**

If a solution is made by mixing 50.0 moles of KOH to 3.4 kilograms of water, what is the solutions molality?
*February 26, 2011*

**Science(Please Help it's on my TEST!!) **

What angle would a projectile have to be shot at so that it will go twice as high as it will far
*February 24, 2011*

**Science(Please Help it's on my TEST!!) **

What angle would a projectile have to be shot at so that it will go twice as high as it will far
*February 24, 2011*

**Science(Please Help it's on my TEST!!) **

What angle would a projectile have to be shot at so that it will go twice as high as it will far
*February 24, 2011*

**physics**

Uniform rod of weight 10N and length 5m is supported by ropes from points P and Q. The rope at P is attached 1.0m from end M and the rope at Q is attached 0.25m from end O. find the tensions Tp and Tq
*February 24, 2011*

**Physics**

you will first of all conevert km/h to m/s which is 105 multiply 1000 then divide by 3600= 29.7. use the formula f= ma. 1250 multiply by 9.8=12250 then use formula for work w=f multiply by distance w=12250 multiply by 29.7=363825J.
*February 23, 2011*

**Math (Help This Will Be on My Test Tomorrow!)**

What is 2x times 200-4x/3? {2x(-4x+200/3)
*February 23, 2011*

**Functions**

What is 2x times 200-4x/3? {2x(-4x+200/3)
*February 23, 2011*

**mth**

(8*)/(*-3)+7/(*-3)=8*(*-3)+7(*-3)/(*-3)+(*-3) find d l.c.m. ans=1-5*/3
*February 22, 2011*

**Science**

Diagram examples of a player dat drop a ball on d ground and bounce back to his hand
*February 22, 2011*

**College algebra**

y-y1/x-x1=m, (6,4) m=9/8. y-4/x-6=9/8, 8(y-4)=9(x-6), 8y-32=9x-54, 8y=9x-54+32 divide both by 8, 8y/8y=9x/8-22/8, Ans=y=9x/8-22/8
*February 14, 2011*

**Physics**

A car travels 2.06 km in the x-direction, then turns left 70.3 degrees to the original direction and travels an additional distance of 4.23 km. Calculate the x component of the car’s net displacement. Let : d1 = 2.06 km, theta = 70.3 degrees , and d2 = 4.23 km.
*February 1, 2011*

**algebra**

1<3x+5<12
*January 16, 2011*

**5th grade math**

144
*December 14, 2010*

**college**

A 5.1 kg object initially at rest at the origin is subjected to the time-varying force shown in Figure P5.25, with the vertical axis in 4 N increments. What is the object's velocity at t = 6 s?
*December 6, 2010*

**Probability and Statistics**

Can someone tell me what formula I should use? The number of milligrams of tar in filtered and unfiltered cigarettes is being compared. The following cigarettes are pulled to be part of the samples: Filtered: bunch of data Unfiltered: bunch of data The first question is create...
*November 30, 2010*

**Statistics**

A popular casino in Windsor estimates that the chance that someone sitting at one of their Black Jack tables has a 0.35 probability of winning a given hand. Assume that all games played are independent. a. Isaac decides to play until his first win, and bets $50 per game. When ...
*November 24, 2010*

**Literature**

Can anyone point me in the right direction? I need to know which play made the line Drama Kings and Queens unite!. I have tried using several search engines with no avail. Just a hint at the author would be good.
*November 9, 2010*