Tuesday

October 6, 2015
Number of results: 59,174

**Pyhsics **

The weight of the atmosphere above 1 m2{\rm m}^{2} of Earth's surface is about 100,000 N{\rm N}. Density, of course, becomes less with altitude. But suppose the density of air were a constant 1.2 kg/m3{\rm kg}/{\rm m}^{3}. Calculate where the top of the atmosphere would be. ...
*April 10, 2014 by Kimmie *

**physics**

You have a mass m hanging on a string of length L. You pull the mass to one side so that the string makes an angle theta with the vertical, then you let go of the mass. For the instant after you let go, how do you calculate the tension in the string? I came up with the ...
*April 7, 2009 by kayla*

**chemistry**

mass of crucible- 18.50g mass of crucible+hydrate- 19.50g mass of crucible+anhydrous salt 1st heating- 19.10g mass of crucible+anhydrous salt 2nd heating- 19.10g Questions: 1. calculate mass of water lost from your sample 2. calculate % of water in sample CuSO4*5H2O 3. ...
*May 29, 2012 by Amanda*

**science chemistory**

CaCO3 2HCl forms CO2 CaCl2 H2O 1.calculate the molar mass of calcium chloride produce 2.calculate the number of moles of calcium carbonate 3.calculate the mass of calcium carbonate
*June 14, 2015 by kem*

**math**

Peter is interested in designing an experiment to test the probability of tossing a certain number on a fair cube. He will toss one cube 10 times in a row and count how many times the cube lands on the number 4. What is one aspect of this experiment he can change to make the ...
*December 10, 2010 by Anonymous*

**chemistry**

The ionic radii of Na+ (atomic weight 22.99) and Cl- (atomic weight 35.45) are 1.0 and 1.8 Angstrom, respectively. Treating the ions as hard spheres, calculate the density of NaCl. Compare this with the measured density of 2.17 g/cm3.
*September 13, 2014 by john*

**chemistry**

calculate the moles of solute present in 1.25 centimeter cube of 0.5 M h3po4 solution
*June 19, 2014 by hifsa*

**Physics**

Three blocks of masses 1.0, 2.0, and 4.0 kilograms are connected by massless strings, one of which passes over a frictionless pulley of negligible mass, as shown above. Calculate each of the following. a. The acceleration of the 4 kilogram block b. The tension in the string ...
*February 28, 2010 by Kate*

**chemistry**

Titanium is used in airplane bodies because it is strong and light. It has a density of 4.55 g/cm^3. If a cylinder of titanium is 7.75 cm long and has a mass of 153.2 g, calculate the diameter of the cylinder. (V=pi*r^2*h, where V is the volume of the cylinder, r is the radius...
*January 17, 2011 by Maria*

**science**

a solution is made by dissolving 25 g NaCl in enough water to make 1.0 L solution. Assume that density of the solution is 1.0 g/mL. calculate the mass percent, molarity, molality, and mole fraction of NaCl.
*January 5, 2015 by Kyle *

**science**

a solution is made by dissolving 25 g NaCl in enough water to make 1.0 L solution. Assume that density of the solution is 1.0 g/mL. calculate the mass percent, molarity, molality, and mole fraction of NaCl.
*January 5, 2015 by Kyle *

**Physics need help**

Carbon monoxide is a gas at 0 degree Celsius and a pressure of 1.51x10^5 Pa. It is a diatomic gas, each of its molecules consisting of one carbon atom (atomic mass = 12.o u) and one oxygen atom (atomic mass = 16.0 u). Assuming that carbon monoxide is an ideal gas, calculate ...
*October 27, 2014 by Kristian *

**Physics**

what is the mass of hydrogen peroixide, H2O2, in 350 grams ofa 20% by weight solution?
*December 4, 2009 by Doly V*

**Physics**

A speaker which produces a frequency of 312 Hz is moving away from an observer and towards a wall at 3 m/s when it is 30 degrees Celsius. What is the frequency of the sound that travels directly to the observer? What is the frequency of the sound that bounces off the wall and ...
*February 3, 2009 by Doppler*

**Science -Density**

gold has a density of 19.30 g/cm3 . What si the mass of a bar of gold 15 cm x5 cm x 8 cm
*October 22, 2014 by Jess*

**SCIENCE**

The size, mass, and arrangement of atoms affect the density of a substance. If a substance has a low density, what can you guess about the size, mass and arrangement of the atoms that make up that substance?
*July 16, 2013 by Amy*

**Physics**

I have performed an experiment of simple harmonic motion and the values I got Mass(g)Distance (m) 200 0.438 250 0.398 300 0.345 350 0.312 400 0.297 450 0.281 500 0.259 I would like to know how to calculate the spring constant... since I have been having weird values, if ...
*February 8, 2011 by Abi*

**physics**

A hollow steel buoy in thee form of a sphere of radius 0.5m is fixed by a wire to the base of a river. If the mass of the buoy is 20kg, calculate the tension in the cable. (Take density of water=1000 kilograms per cubic meter).
*August 15, 2013 by Hilder*

**Chemistry**

how to prepare and calculate 10%,20% and 30% of phosphoric acid from the concentrated? Meaning that if 10% = 10%phosporic acid+90% of water. let say i want to prepare in volume of 250ml. given, Formula: H3PO4 Melting point: 42.35 °C Density: 1.88 g/cm³ Molar mass: 98 g/mol
*January 29, 2013 by Merlina*

**physics**

A block of unknown mass is attached to a spring with a spring constant of 6.00 N/m and undergoes simple harmonic motion with an amplitude of 12.0 cm. When the block is halfway between its equilibrium position and the end point, its speed is measured to be 33.0 cm/s a)Calculate...
*April 27, 2009 by Jessi*

**physics**

1 The specific heat of a substance at its boiling point or melting point Is 0 Is infinity Is negative lies between 0 and 1 2 A unit mass of solid converted to liquid at its melting point. Heat is required for this process is Specific heat Latent heat of vaporization Latent ...
*April 12, 2015 by promise*

**physics**

1 The specific heat of a substance at its boiling point or melting point Is 0 Is infinity Is negative lies between 0 and 1 2 A unit mass of solid converted to liquid at its melting point. Heat is required for this process is Specific heat Latent heat of vaporization Latent ...
*April 17, 2015 by solomon*

**geometry**

How would you figure this question out? :The measures of two sides of a triangle are 8 and 11. Use an inequality to express the range of the third side, m.
*October 24, 2010 by jordan*

**9th grade Math**

A rectangular floor that measures 3 m by 2 m is covered by 384 square tiles. Determine side length of each tile in centimeters Thanks!
*October 25, 2010 by Chris*

**Geometry**

one of the ancient store pyramids in egypt has a square base that measures 145m on each side. the height is 108m. What is the volume of the pyramid?
*May 30, 2011 by Anonymous*

**Geometry**

for each parallelogram find the measures of the angles formed by extending two adjacent side through their common vertex: angle is 90 degrees
*December 1, 2013 by Jenna*

**Physics**

A charge q=3*10^-6coulumb is placed at the centre of a cube of edge L.Determine the electric flux through each of the cube faces.
*April 8, 2010 by Ayodele*

**Physics**

a rectangular box of negligible mass measures 5m long,1m wide and 0.5m high. How many kilograms of mass can be loaded into the box before it will sink in a freshwater lake?
*January 6, 2015 by Lee*

**algebra 1**

cube root of (-64x^8y^5) Is it -8x^2y times the cube of y^2?
*November 18, 2014 by matt*

**ET3034TUx Solar Energy**

The current density of an ideal p-n junction under illumination can be described by: J(V)=Jph−J0(eqVkT−1) where Jph is the photo-current density, J0 the saturation-current density, q the elementary charge, V the voltage, k the Boltzmann's constant, and T the ...
*October 16, 2013 by Anon*

**Solar Energy Help ASAP**

The current density of an ideal p-n junction under illumination can be described by: J(V)=Jph−J0(eqVkT−1) where Jph is the photo-current density, J0 the saturation-current density, q the elementary charge, V the voltage, k the Boltzmann's constant, and T the ...
*October 17, 2013 by Anonymous*

**physics**

Challenger Deep in the Marianas Trench of the Pacific Ocean is the deepest known spot in the Earth's oceans, at 10.922 km below sea level. Taking density of seawater at atmospheric pressure (p0 = 101.3 kPa) to be 1024 kg/m3 and its bulk modulus to be B(p) = B0 + 6.67(p −...
*April 16, 2011 by HELP!!!!*

**physics 2a**

from solid sphere, solid cylinder and thin-walled cylinder.All three start from the same position and they all have the same kinetic energy a) which oblect will go the farthest b) does the result depend on the mass, radius of the object
*November 10, 2010 by poisson*

**Chemistry**

Sea water contains an average of 270 ppm of sulfate ion. Calculate the molar concentration of sulfate given that the average density of sea water is 1.02 g/ml. -At first i tried assuming that density is 1.00 g/ml which is a common practice in ppm problems but the answer is ...
*June 12, 2013 by xavier*

**Science**

Please help !!! A student wanted to determine the density of an object made of an unknown substance. She found the mass of the object was 335g. Then she did water displacement to determine the objects volume. The initial volume of the water was 50.0 mL. With the object ...
*October 27, 2013 by Cherie*

**chemistry**

A sulfuric acid solution containing 571.6g of H2SO4 per of solution has a density of 1.329g/cm3. Calculate (a) mass percentage (b)mole fraction (c) molality (d) molarity of H2SO4 in this solution.
*September 2, 2010 by Anonymous*

**college chemistry**

a solution is made by dissolving 25 g NaCl in enough water to make 1.0 L solution. Assume that density of the solution is 1.0 g/mL. calculate the mass percent, molarity, molality, and mole fraction of NaCl.
*January 5, 2015 by Kyle *

**math**

A liquid spray of mass 384 g is packed in a cylindrical container of internal radius 3.2cm. Given that the density of the liquid is 0.6g/cm3, calculate to 2 decimal places the height of liquid in the container.
*February 15, 2015 by kudu*

**physics (graphs)**

Hi, i'm doing a graph for density of an element as a function of atomic number. i'm trying to calculate the slope and it's asking me to include units. if density as a unit: g/cm^3, how would i write the units of the slope? which is basically density over atomic number. would ...
*September 26, 2012 by josh*

**Physics**

A bicycle and rider of total weight 815 N travel at a speed of 40.0 km/h. The rider hits the breaks and the bicycle slides to a full stop in a distance of 8.5 m. Ignore air resistance and use g=9.8 m/s2. What is the coefficient of kinetic friction between the tires (rubber) ...
*October 22, 2009 by Nikita*

**earth science**

how do we find the mass of an object? mass=density * volume
*October 26, 2006 by brian morales*

**science**

how do you figure mass, volume & density using D=m/v v=m/d mass =dxv m
*August 25, 2009 by megan*

**chemistry**

Calculate the pH of concentrated hydrochloric acid if this solution is 24.8 % HCl by weight and has a density of 1.16 g/mL. a. ) -0.77 b. ) -0.83 c. ) -0.90 d. ) -0.98 e. ) -1.01 i got c) by converting density into concentration (mol/L) and then, multiplying by 0.248. next, i ...
*November 2, 2008 by Anonymous*

**math**

A cube with edges of length 2 centimeters is buildt from centimeter cubes. If you paint the faces of this cube and then break it into centimeter cubes, how many cubes wil be painted on three faces? how many will be painted on two faces? On one face? How many will be unpainted...
*January 31, 2007 by jena*

**Physics**

A diver stands on the end of a diving board as shown in the figure on the right. The mass of the diver is 58 kg and the mass of the uniform diving board is 35 kg. Calculate the magnitudes and directions of the forces exerted on the board at the points A and B. A and B are 1m ...
*March 24, 2014 by Bobby*

**Calculus**

A solid is formed by adjoining one hemisphere to the top of a cylinder. The total volume of the solid is V (treat as a constant) cubic centimeters. Find the minimum surface area of the solid in terms of V.
*December 6, 2012 by MM*

**8th grade science**

a 10-liter sample of one type of crude oil has a mass of 8.20kg. What i the density? If this oil spilled on the ocean's surface, would it sink or float? explain answer in terms of density.
*March 24, 2010 by sam*

**chemistry**

If you look at the side of a quarter, you can see layers of different metals. Is a coin a solid solution?
*December 12, 2010 by Carla*

**chemistry 101**

If 15g of NaOh is dissolved in 285 g of water, calculate the following. Assume the density of the solution is 1.06 g/cc. a) Calculate the moles of NaOH in the solution? My answer is 15gNaOH/40g NaOH= .0375 mole NaOH b) Waht is the mass % w/w of the solution? My answer is 15g ...
*December 8, 2012 by Tracy*

**chem-Bob**

What pressure (atm) is exerted by a column of ethanol 65.0 cm high? The density of ethanol is 0.789 g/cm3 and 9.8m/s2 as your gravitational constant. mass*gis the weight of the column density*h*area*g= weight density*h*g= pressure Thanks for your help Bob. The answer i got is...
*October 17, 2010 by chris*

**physics**

a bullet of mass 40g strikes a stationary wooden block of mass 6kg horizontally at 500m per second.the bullet goes through the block,and emerges from the other side at 200m per second.a)Calculate the velosity of the block once the bullet emerges from it?
*January 26, 2014 by omphile*

**Math**

Determine the number of triangles that could be drawn with the given measure. Then, find the measures of the other angles and the other side in each possible triangle. Round side lengths to the nearest tenth of a unit and angle measure to the nearest tenth of a degree, where ...
*June 9, 2014 by Han*

**Physics**

a small sphere whose m mass is 1.0 mg carries a charge q of 2.0*10^(-8)C. It hangs from a silk thread that makes an angle of 30 degrees with a large charged nonconducting sheet as in figure. Calculate the uniform charge density σ for the sheet
*February 22, 2012 by Jc*

**chemisty**

Find the volume of a starburst candy (220 cm cubed). The mass is 5.14 grams. Calculate it's density. How many starburst would it take to fill your locker (139,200 cm cubed)? Use dimensional analysis to solve this problem.
*September 8, 2013 by jj*

**re-chem please**

if i had a beaker with .0001M of Cu solution and copper solid (anode) and another beaker with 1M Cu solution and Cu solid (cathode), how would i calculate the half reactions of these two? would the two equations be: cu2+(aq) --> Cu(s) + 2e- and ?
*January 26, 2009 by sarah*

**Physics**

A 50 g ice cube can slide without friction up and down a 32° slope. The ice cube is pressed against a spring at the bottom of the slope, compressing the spring 10.16 cm. The spring constant is 22 N/m. When the ice cube is released, what distance will it travel up the slope ...
*September 28, 2011 by Joe*

**Physics**

A 50 g ice cube can slide without friction up and down a 32° slope. The ice cube is pressed against a spring at the bottom of the slope, compressing the spring 10.16 cm. The spring constant is 22 N/m. When the ice cube is released, what distance will it travel up the slope ...
*September 28, 2011 by Joe*

**chemistry**

Solid sodium nitrate can be decomposed to solid sodium nitrite and oxygen gas. If the percentage yield for the reaction is 80.4%, calculate the grams of sodium nitrite that will result from the decomposition of 955grams of sodium nitrate. 2 NaNO3 ¨ 2 NaNO2 + O2
*May 15, 2009 by lama*

**physics**

two people are pushing a car of mass 2000kg. if they each push with a force of 320N at an angle of 15degrees to each side of the car, calculate the acceleration of the car, assuming no resistance... please help
*March 11, 2009 by cynthia*

**math grade 10 **

A cube has a volume of 1280 cubic feet. Determine the edge length of the cube as a radical in simplest form.
*September 26, 2012 by Slarlett*

**physics**

A 67.0 g ice cube can slide without friction up and down a 26.0 degree slope. The ice cube is pressed against a spring at the bottom of the slope, compressing the spring 12.0 cm . The spring constant is 20.0 N/m .When the ice cube is released, what distance will it travel up ...
*November 13, 2010 by Anonymous*

**dressmakeing exam 04202100**

the most appropriate fabric for a pregnant women's only coat would be (a) black and ehite plaid (b) solid navy blue (c red and gray stripes (d) multicolored floral, when a dainty slip has along the top edge, the shoulder straps should be attached by (a) machine stitching along...
*April 19, 2012 by karen*

**Algebra. 1**

For a snow sculpture content, snow is packed into a cube-shaped box with an edge of 8 feet. The box is frozen and removed, leaving a cube of snow. One cubic foot of snow weighs about 30 pounds. You can estimate the weight ( in pounds) of the cube using the expression 30v where...
*August 23, 2007 by Michael*

**Chemistry**

This is probably easier then my making it but... Calculate the ph of a forming acid solution that contains 1.35% forming acid by mass. Assume a density of 1.01g/ml for the solution.
*February 24, 2012 by L.Bianchessi*

**Chemistry**

An aqueous antifreeze solution is 31.0% ethylene glycol (C2H6O2) by mass. The density of the solution is 1.039 g/cm3. Calculate the molality of the ethylene glycol.
*March 14, 2013 by Maddie*

**chemistry**

4. A sulfuric acid solution containing 571.6 g of H2SO4 per liter of solution has a density of 1.329 g/cm3 . Calculate a. The mass percentage b. The mole fraction c. The molality d. The molarity of H2SO4 in this solution
*February 5, 2015 by Steph*

**Math**

The density of ocean water at the surface is 1025 kg per meter cubed. Write an equation to calculate the mass of 12 meters cubed of ocean water
*October 6, 2014 by Frankie*

**Physics**

Two masses, mA = 40.0 kg and mB = 55.0 kg, are connected by a massless cord that passes over a pulley that is free to rotate about a fixed axis. This device is known as an Atwood’s Machine. The pulley is a solid cylinder of radius R = 0.360 m and mass of 7.50 kg. Note: The ...
*October 23, 2014 by Cheese*

**Chemistry**

At 20 degrees C ethanol has a density of 0.789 g/ml and H2O has a density of 1.0 g/ml. What is the % by volume of ethanol of a solution made by adding 50g of ethanol with 50g of H2O? Tutor Answer: Use density = mass x volume to convert 50 g ethanol to volume and to convert 50....
*November 29, 2011 by Shelly*

**Chemistry**

Completion To calculate the percent composition of a known compound, start with chemical formula of the compound and calculate the ________ which gives the mass of one mole of the compound. formula mass. molecular mass.
*February 4, 2007 by Bryan*

**math**

Five houses, next door to each other, are on the even side of the road. They are all three digit numbers and the largest is a perfect cube.The second lowest is a triangle number.
*March 3, 2014 by george*

**physics**

50+kg+ice+cube+slides+without+friction+up+and+down+a+30°+slope.+The+ice+cube+is+pressed+against+a+spring+at+the+bottom+of+the+slope,+compressing+the+spring+10cm+.The+spring+constant+is+25Nm.+When+the+ice+cube+is+released,what+distance+will+it+travel+up+the+slope+before+...
*April 4, 2013 by zama *

**Chemistry**

Calculate the molarity and normality of a solution containing 9.8 g of H2SO4 on 250 cm cube of the solutiom
*June 29, 2012 by Shafket*

**Chemistry**

An aqueous antifreeze solution is 40.0% ethylene glycol (C2H6O2) by mass. The density of the solution is 1.05 g/cm3. Calculate the molality, molarity, and mole fraction of the ethylene glycol.
*January 21, 2011 by Sarah*

**Chemistry Lab**

The experimental data you entered is: Trial #1 Trial #2 Trial #3 Mass: gelatin capsule (g) .123 .118 .122 Mass: whole alka-seltzer tablet (g) 3.230 3.230 3.230 Mass: capsule + alka-seltzer sample (g) .822 .882 .677 Mass: system before reaction (g) 23.109 23.110 22.735 Mass ...
*October 28, 2012 by Tyler*

**INTRODUCTION TO PHYSICS**

Question A mixture of alcohol and water has the density 750 kg m 3.calculate the ratio in the mixture of alcohol to water by i.mass ii.volume
*November 26, 2014 by "CRYING"HELP PLEASE!!!,THIS CAN SAVE A SMILE*

**ap chem**

I'm supposed to find the mass of NaCl in 1 L & the mass of H20 in 1 L. I'm given NaCl solution. 1% by mass. The Density is 1.071 g/mL. I know the answer for NaCl is 10.71 g, but I don't know where to start to get to this. Could you lead me in the right direction?
*February 24, 2011 by dylan*

**Chemistry 2**

A United Nations toxicologist studying the properties of mustard gas, S(CH2CH2Cl)2, a blistering agent used in warfare, prepares a mixture of 0.675 M SCl2 and 0.973 M C2H4 and allows it to react at room temperature (20.0°C ). SCl2 (g) + 2 C2H4 (g) --> S(CH2CH2Cl)2 (g) At ...
*March 11, 2015 by Anonymous*

**physics**

A long thin rod lies along the x-axis from the origin to x=L, with L= 0.890 m. The mass per unit length, λ (in kg/m) varies according to the equation λ = λ0 (1+1.410x2). The value of λ0 is 0.700 kg/m and x is in meters. 1. Calculate the total mass of the ...
*February 12, 2014 by Naya*

**math**

The density of a crystal is 2.65 grams per cubic centimeter. Ryan has a rectangular prism made of quartz. It measures 10 cm by 10 cm by 6 cm. Find the weight of this crystal in kilograms.
*April 6, 2011 by Dan*

**Grade 8 Math**

How can you use the measures of the interior angles of regular polygons to show that a platonic solid cannot be made from regular polygons that have more than five sides?
*June 2, 2009 by Al*

**math **

The Kramer family room measures 23ft by 20ft. They are covering the floor with tiles that measure 1 ft on a side and cost $0.73 each? How much will they spend on the tile?
*February 12, 2013 by Carol *

**math**

calculate the area of a rectangle which measures 21m by 7m.
*May 3, 2014 by Anonymous*

**math**

Please explain to me. A green sea turtle weights 355.3 kilograms. Which decimal is equivalent to this number? A. 3,550.3 B. 350.30 C. 355.03 D. 350.003
*December 16, 2012 by Loren*

**Chemistry**

2. Calculate the volume for the following object If you know that the object has a mass of 24 grams and the density is 12 g/ml. I tried to get rid of the 24 by multiplying it on both sides, and dividing on both sides, but neither worked. What will then? Thanks!
*February 15, 2009 by Ben*

**science**

Given that 6.20 x 10^23 ethanol molecules have a mass of 46.04g calculate the number of ethanol molecules in a film of ethanol that is 3.08 mm by 0.0015 mm. Assume the density of ethanol is 0.790 g/mL please helppp
*August 28, 2012 by anonymous*

**math**

A Jewlery box has length of 3 and a half, a width if 1 and a half, and a height of 2 units. What is the volume if the box I cubic units? Each of the cubes in this activity has a side length of 1/2. How many cubes with side length 1/2 does it take to form a unit cube? How many ...
*May 6, 2014 by Jess*

**math**

The scale balanced when n+20=80 Suppose the left side becomes n+3 How can I change the right side so that n+3=____ is equivalent to n+20=80 How can I change the right side to get an equivalent equation my choices are A. Add blank to the right side B. Divide the right side by ...
*January 12, 2015 by Hannah*

**math**

A sheet of cardboard measures 9 feet by 6 feet. Gina makes the entire sheet of cardboard into a closed box that is a perfect cube. What is the surface area of the box?
*January 24, 2013 by annette*

**Maths**

Question A mixture of alcohol and water has the density 750 kg m 3.calculate the ratio in the mixture of alcohol to water by i.mass ii.volume
*November 25, 2014 by Alozie benjamin*

**Chem**

If the molar mass of monatomic deuterium (D) is 2.0141 g, then what is the density of diatomic deuterium (D2) gas at 25.0°C and 1.00 atm? I know the equation for density is: d=m/v What equation(s) do I need to use to solve this?
*April 19, 2008 by Ginger*

**physics**

A block of mass 200g and density 0.8g/cm3 is submerged in a liquid of density 0.2g/cm3. find minimum force required to keep the block floating.
*February 11, 2012 by Narayanan*

**geometry**

find the measures of each side of triangle abc with vertices a(-1,5), b(6,1), c(2,6) and classify the triangle.
*February 19, 2011 by Tori*

**Geometry**

You are presented with a right triangle. The dimension of side a is 2 inches and the dimension of side b is 4 inches. Calculate the dimension of side c. I believe it would be 4.5 inches
*October 4, 2008 by Jen*

**mathematics**

what is the slantheight of the largest square pyramid that can be curved out from a wooden cube of side 12cm?find the lateral surface area of the pyramid so obtained?
*October 6, 2012 by asha*

**gen physics**

An iron (ƒâ = 7860 kg/m3) cube measuring 15.4 cm on a side is suspended from a wire. Find the tension in the wire when the block is completely submerged in water (ƒâ = 1000 kg/m3).
*July 16, 2013 by hank*

**Chemistry **

What is the mass, in grams, of a pure iron cube that has a volume of 4.30 cm3?
*February 2, 2015 by Samantha*

**math/chemisty**

Find the volume of a starburst candy (220 cm cubed). The mass is 5.14 grams. Calculate it's density. How many starburst would it take to fill your locker (139,200 cm cubed)? Use dimensional analysis to solve this problem.
*September 8, 2013 by jj*

**Science**

A 400 kg. wooden log is floating with 0.2 of its volume above water level. Given that the density of iron is 7.8 gram per centimeter cubic, calculate the least mass of iron object attached to the underside of log that will sink it.
*October 25, 2013 by Uddeshya*

**Physics**

M, a solid cylinder (M=2.35 kg, R=0.111 m) pivots on a thin, fixed, frictionless bearing. A string wrapped around the cylinder pulls downward with a force F which equals the weight of a 0.750 kg mass, i.e., F = 7.357 N. 1)Calculate the angular acceleration of the cylinder. The...
*February 11, 2014 by Tomas*