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Questions Asked on October 12, 2011

The force required to stretch a Hooke’s-lawspring varies from 0 N to 62.4 N as we stretch the spring by moving one end 17.2 cm
1. 2 answers
2. asked by phys101!
3. 7,121 views
Starting from rest, a 5.00 kg block slides 2.50 m down a rough 30.0 degree incline. The coefficient of kinetic friction between
1. 1 answer
2. asked by Dee
3. 7,046 views
a 75 kg person escapes from a burning building by jumping from a window 30 m above a catching net. Acceleration due to gravity
1. 5 answers
2. asked by Emily
3. 6,368 views
Rank the carbon-carbon bonds in order of decreasing bond length.Rank carbon-carbon bonds from highest bond length to lowest. To
1. 1 answer
2. asked by Caitlin
3. 6,056 views
John bought a shirt on sale for 25% off the original price and another 25 % off the discounted price. If the final price was
1. 11 answers
2. asked by Cris
3. 6,056 views
A thin 2kg box rests on a 6kg board 50cm long with 20cm hanging off the edge of a table. How far can the center of the box be
1. 2 answers
2. asked by Dan
3. 4,765 views
y = (ln x)^(cos4x)Use logarithmic differentiation to find the derivative of the function.
1. 1 answer
2. asked by John
3. 4,263 views
What intermolecular forces are important in the binding of organic molecules to the absorbent in absorption chromatogrpahy?
1. 7 answers
2. asked by Allison
3. 3,823 views
A tether ball of mass 0.25 kg is attached to a vertical pole by a cord 1.4 m long. Assume the cord attaches to the center of the
1. 1 answer
2. asked by Tina
3. 3,719 views
Given that tan B= 7/24 with B in quadrant III, find sin 2B, cos 2B, and tan 2B, using angle identities.
1. 1 answer
2. asked by Ryan
3. 3,144 views
A person standing at the edge of a seaside cliff kicks a stone over the edge with a speed of vi = 13 m/s. The cliff is h = 58 m
1. 2 answers
2. asked by Emily
3. 3,016 views
tan x = n tan y, sin x = m sin y then prove that m^2-/n^2-1 = cos^2x
1. 2 answers
2. asked by samuel r. edward
3. 2,743 views
how many joules of heat are needed to vaporize 50.0 g water at 100.0 C?
1. 2 answers
2. asked by Maci
3. 2,188 views
Find the exact value by using a half-angle identity. cos 22.5 degrees
1. 1 answer
2. asked by Omar
3. 2,181 views
A 5.0 kg wooden block is placed on an adjustable inclined plane. (For this problem, μs is approximately 0.55 and μk is
1. 2 answers
2. asked by Yuki
3. 1,985 views
A block with mass m = 14 kg rests on a frictionless table and is accelerated by a spring with spring constant k = 4545 N/m after
1. 0 answers
2. asked by a
3. 1,963 views
The dimensions of a rectangle measuring 32cm by 24cm are enlarged in the ratio 5:2.find the new dimensions
1. 2 answers
2. asked by Tawanda
3. 1,817 views
A 42-kg pole vaulter running at 14 m/s vaults over the bar. Her speed when she is above the bar is 1.7 m/s. Neglect air
1. 2 answers
2. asked by ben
3. 1,794 views
A ferris wheel has a diameter of 320 feet and the bottom of the Ferris wheel is 9 feet above the ground. Find the equation of
1. 2 answers
2. asked by Tyana
3. 1,787 views
Write a real word problem where you would have to multiply 120 and 75?
1. 16 answers
2. asked by Amaya
3. 1,691 views
I have to read this and answer these questions for homeowrk-I'm not sure if I did this correctly. Could you please check-I put
1. 4 answers
2. asked by Marissa
3. 1,679 views
calculate the volume of mL of a 1.420 M NaOH solution required to titrate the following solution. 25.00 mL of a 1.500 M H3PO4
1. 1 answer
2. asked by TROUBLED
3. 1,670 views
Stretching DNA.With its double-helix structure, DNA is coiled like a spring. A biophysicist grabs the ends of a DNA strand with
1. 1 answer
2. asked by Eman
3. 1,667 views
Which one of the following sources is most likely to give you objective information about the expected performance of a new car
1. 4 answers
2. asked by Ciara
3. 1,665 views
find the horizontal tangents of the curve and show how.y=x^3-2x^2+x+1
1. 1 answer
2. asked by Millie
3. 1,665 views
U is jointly proportional to V and W. Let k be the constant proportionality. If U = 4 when V = 8 and W = 6, find the value of k
1. 1 answer
2. asked by cool
3. 1,645 views
A string of 29 identical Christmas tree lightsare connected in series to a 120 V source. The string dissipates 65 W. What is the
1. 2 answers
2. asked by Anonymous
3. 1,607 views
A golfer tees off and hits a golf ball at a speed of 31 m/s and at an angle of 35 degrees. What is the vertical velocity
1. 3 answers
2. asked by Anonymous
3. 1,606 views
A lift is used to carry boxes to the top floor of a hotel 20m high.A total weight of 100kg of boxes was caried up in 20second.If
1. 7 answers
2. asked by Blessig iliya
3. 1,603 views
A car is slowing down at a rate of 20 km/h/s. How far does it travel if its original velocity is 50 km/h and its final velocity
1. 2 answers
2. asked by Anonymous
3. 1,585 views
Janet jumps off a high-diving platform with a horizontal velocity of 3.5 m/s and lands in the water 1.7 s later. How high is the
1. 2 answers
2. asked by Eddie
3. 1,581 views
A projectile is fired straight up at a speed of 15 m/s.How long does it take to reach the top of its motion? The acceleration of
1. 1 answer
2. asked by Ellen
3. 1,490 views
Given that sin theta= 3/5 and the terminal side is in quadrant II, find tan (pi/2 - theta)
1. 1 answer
2. asked by Ryan
3. 1,479 views
A student visits a sports club everyday from monday to friday after scholl hours and plays one of the three
1. 1 answer
2. asked by shruthi
3. 1,477 views
Propane(C3H8), the major component of LP game, is often used as heating and cooking fuels in homes. When propane is burned(
1. 3 answers
2. asked by Maci
3. 1,471 views
The empirical formula for Brilliant Blie dye is C37 H34 N2 O9 S3 Na2, and the formula weight is 792.86 g/mol. How would you
1. 2 answers
2. asked by Hannah
3. 1,467 views
Two children float motionlessly in a space station. The 20-kg girl pushes on the 40-kg boy and he sails away at 1.0m/s.What
1. 1 answer
2. asked by Anonymous
3. 1,452 views
1)MgO (s) + 2H (aq) -> Mg+2 (aq) + H2O (l) 2) Mg+2 (aq) + H2 (g)-> Mg(s) + 2H+ (l) 3) equation 1+ equation 2 = MgO (s) + H2 (g)
1. 1 answer
2. asked by sari
3. 1,446 views
A 64kg driver gets into an empty taptap to start the day's work. The springs compress 1.9×10−2 m . What is the effective
1. 2 answers
2. asked by Eman
3. 1,441 views
Find the area of each figure. Round to the nearest hundredth.There is a picture of a circle with a diameter of 6 squared root of
1. 2 answers
2. asked by jasmeen
3. 1,412 views
An apple falls off a tree branch located 35 meters off the ground. How many seconds does it take to hit the ground?
1. 1 answer
2. asked by ray
3. 1,396 views
Is this correct? Madison Wisconsin is closer to the equator than the North Pole?
1. 3 answers
2. asked by Sean
3. 1,375 views
How long would it take a laser beam to go to the Moon and back if the distance to the Moon is 3.8 x 108 m?I know that Velocity
1. 1 answer
2. asked by Michelle
3. 1,372 views
How many joules of heat are required to melt 60.5g of ice at 0 degrees C?
1. 1 answer
2. asked by Maci
3. 1,367 views
A 4.6-kg block slides down an inclined plane that makes an angle of 26° with the horizontal. Starting from rest, the block
1. 1 answer
2. asked by Kayla
3. 1,319 views
Solve this question, the resultant of two force acting at right angle to each other on a body is ten newton. If the angle
1. 3 answers
2. asked by Adeleke
3. 1,308 views
determine the value of k such that g(x)=3x+k intersects the quadratic function f(x)+2x^2-5x+3
1. 1 answer
2. asked by Joanna
3. 1,283 views
You’re standing outside on a windless day when raindrops begin to fall straight down. You run for shelter at a speed of 5.3 ,
1. 1 answer
2. asked by jes dores
3. 1,246 views
I urgently need you to check these sentences. Whad do you think I should do?1) I graduated with honours in modern languages and
1. 1 answer
2. asked by Henry2
3. 1,238 views
A 43.0 g silver spoon at 22.3°C is placed in a cup of coffee at 90.0°C. The spoon absorbs heat from the coffee to reach a
1. 0 answers
2. asked by Troyann Morvant
3. 1,238 views
Word problems confuse me >_>You are choosing between two long-distance telephone companies. Company A charges $.09 per minute
1. 2 answers
2. asked by Lynn
3. 1,210 views
Which one of the following is an example of epithelial tissue?A. Lining of the digestive tract B. Aponeuroses C. Subcutaneous
1. 2 answers
2. asked by Anonymous
3. 1,209 views
What is the IUPAC name for---phenyl(group)-c=o-o-ch2-ch2-ch3 ???? I put phenyl propanoate as my answer, but that was incorrect.
1. 1 answer
2. asked by Alphaa
3. 1,205 views
What is the mechanism of action between sodium benzoate (NaC6H5COO) and hydrochloric acid (HCl)?I need to know where the
1. 1 answer
2. asked by BOB
3. 1,203 views
A store offers a 15% discount on all items in the store during a sale. All store employees get an additional 10% employee
1. 1 answer
2. asked by cj
3. 1,202 views
When the buyer assumes full responsinility for all post-sale repairs,the vehicle is said to be sold :A:with a limited warranty
1. 5 answers
2. asked by Ciara
3. 1,191 views
A billiard ball rolling across a table to the right at 2.2 m/s makes a head-on elastic collision with an identical ball. The
1. 0 answers
2. asked by sidney
3. 1,190 views
Assuming no air resistance, how long does it take a penny to fall if it was dropped from the CN Tower (553 m)? Acceleration due
1. 1 answer
2. asked by Anonymous
3. 1,188 views
Balance:NH3 + [Cd(NH3)4] > Cd2+ + NH4+
1. 1 answer
2. asked by Pete
3. 1,145 views
What is the correct set up for:How many milligrams are in 67 Kilograms? I think this might be correct but I am unsure. 67kg x
1. 2 answers
2. asked by Connie
3. 1,142 views
I NEED THIS BY TOMORROW!!!!!! What were the taxes introduced during the 17th century england (aka English Civil War)- list 4
1. 5 answers
2. asked by Stephanie
3. 1,140 views
Cheryl runs a race on a 400.0 m circular track. She starts running east of the starting line and then circles the track and
1. 1 answer
2. asked by Mishaka
3. 1,137 views
An object traveling at a constant 20 m/sec ina circular path is changing its 1. velocity. 2. speed. 3. weight. 4. mass.
1. 2 answers
2. asked by Mathew
3. 1,133 views
the marginal cost function for a manufacturing company is given by dollars per box,c'(q)=q^2-10q+30 where q is the number of
1. 1 answer
2. asked by Anonymous
3. 1,128 views
I want to be a tutor here...I have answered plenty of questions and I think it would be cool to actualy be a tutor. The thing is
1. 5 answers
2. asked by Alice
3. 1,124 views
farmer fred had chickens and cows on his farm. he knows that together there are 108 legs and 30 heads. how many of each type of
1. 1 answer
2. asked by bill
3. 1,107 views
A 3.5 kg bucket of water is raised from a well by a rope. If the upward acceleration of the bucket is 4.0 m/s2, find the force
1. 1 answer
2. asked by Marvin Murrill
3. 1,101 views
Use the experimental data below to determine the order of the reaction with respect to
1. 0 answers
2. asked by Asley
3. 1,096 views
Please show me the steps to solve this problem: The total shipping weight of two crates is 358 pounds. One crate weighs 124
1. 2 answers
2. asked by Devin
3. 1,085 views
please can you help to get an answers from your own words. this is my assessment and i need tosubmit but i relly could not get
1. 1 answer
2. asked by jessie
3. 1,072 views
I have read prior post and my book but I can not figure out what is the connection between learning theory and mechanistic and
1. 0 answers
2. asked by Jillian
3. 1,066 views
A sample of gold is at a initial temperature of 350 k. Once dropped into a coffe cup calorimeter of heat capacity 400 k^-1 it
1. 1 answer
2. asked by chad
3. 1,042 views
A 1970 kg car traveling at 13.8 m/s collides with a 2960 kg car that is initally at rest at a stoplight. The cars stick together
1. 0 answers
2. asked by sidney
3. 1,040 views
a worker pushing a wheelbarrow of mass 50 kg with a constant velocity along a horizontal surface whose coefficient of friction
1. 1 answer
2. asked by Anonymous
3. 1,036 views
I understand how to use a calculator to write the decimal point using the golden ratio which is 1.618034 and the conjugate is
1. 1 answer
2. asked by Rachel
3. 1,019 views
of 500 employees, 200 participate in a company's profit- sharing plan (P), 400 have major-medical insurance coverage (M). and
1. 0 answers
2. asked by marina
3. 1,019 views
a 70 kg box slides along the floor by a 400N force. the coefficient of friction between the box and the floor is 0.50 when the
1. 1 answer
2. asked by Anonymous
3. 1,018 views
jake says adding 0 does not change a number. Is he correct? Explain.
1. 2 answers
2. asked by Brent
3. 1,011 views
A 3.664 g sample of monoprotic acid was dissolved in water and required 20.27 mL of a 0.1578 M NaOH solution for neutralization
1. 1 answer
2. asked by TROUBLED
3. 1,005 views
How does alzhemiers have abnormal cell division? Please give me any link to any site, thanks.
1. 1 answer
2. asked by Anonymous
3. 1,005 views
how many joules of heat are needed to heat 900.0g water from 18.0 C to 98.0 C?
1. 1 answer
2. asked by Maci
3. 1,001 views
Images on a computer can be stored many ways to account for quality and space issues. One of the factors we can adjust is colour
1. 1 answer
2. asked by Tanveer
3. 996 views
The radius of a sphere immersed in an infinite ocean of incompressible fluid with densityaccording to the equation, R(t) = A + a
1. 0 answers
2. asked by paul gokool
3. 989 views
you are creating a window display at a toy store using wooden blocks. the display involves stacking blocks in triangular forms.
1. 1 answer
2. asked by jaydene
3. 986 views
how do we see upright if the images produced by our eyes are vertically inverted ( i know our brain does something to fix it...
1. 0 answers
2. asked by mm
3. 981 views
Okay so there is a non profit organization called Heifer. This group sends animals to 3rd world countries. It teaches people to
1. 1 answer
2. asked by mark
3. 979 views
what are the four goals of psychology and one example for each?
1. 1 answer
2. asked by philip
3. 974 views
a titration experiment 20 mL solution of hydrochloric acid required 15.2mL of a .879 M barium hydroxide solution. What was the
1. 1 answer
2. asked by Chris
3. 972 views
as companies grew,why were new types of businesses nedded ?pertaining to the rise of the big business
1. 1 answer
2. asked by melisa
3. 957 views
How to convert 215% into a fraction. Can anyone help
1. 1 answer
2. asked by Leslie
3. 946 views
a boy is blowing a spherical balloon at a rate of 50 cm3/s.at what rate is the radius of the balloon changing when the radius is
1. 1 answer
2. asked by jj
3. 943 views
The building and equipment are estimated to cost $1,100,000 (ignore depreciation). The building and equipment have zero
1. 0 answers
2. asked by jenny
3. 942 views
a dike in Holland springs a leak through a hole of area 1cm squared at a depth of 2m below the water surface. How much force
1. 1 answer
2. asked by ray
3. 939 views
THE TOTAL AGE OF GROUP OF PARENTS IS 342.A NEW PARENT AGED 48 JOINS THE GROUP AND THE AVERAGE RISES BY 1. WHAT IS THE ORIGINAL
1. 2 answers
2. asked by JULIE
3. 935 views
An airline estimates that 91% of people booked on their flights actually show up. If the airline books 80 people on a flight for
1. 0 answers
2. asked by Kim Reed
3. 932 views
How do you set up this?I am lostFind an equation for the linear model of the situation below and use it to make a prediction. A
1. 2 answers
2. asked by JOY
3. 921 views
( 1.) An objectis thrown upward from the edge of a tall building with a velocity of 10m/s. Where will the object be 3s after it
1. 13 answers
2. asked by lawrence
3. 917 views
number of moles of NaOH required to titrate 38.05mL of a 1.500 M H3PO4 solution
1. 0 answers
2. asked by Nick
3. 917 views
A 0.30 kg stone attached to a 0.8 m long string is rotated in a horizontal plane. The string makes an angle of 15° with the
1. 2 answers
2. asked by Emily
3. 916 views
What is the percent by mass concentration of KCl in a solution prepared by adding 80 grams KCl to 200 grams of water?
1. 1 answer
2. asked by Cristina
3. 916 views

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