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April 24, 2014

Search: A 1.2 kg mass attached to a spring oscillates with an amplitude of 5.5 cm and a frequency of 1.9 Hz. What is its energy of motion?

Number of results: 22,622

Physics
Initially, mass one (2.10 kg) has a velocity of 5.90 m/s and mass two (2.80 kg) is at rest. After they collide, mass one emerges at an angle theta = 33.0 degrees. What is the speed of mass one after the collision if the collision is completely elastic? (Note, there are ...
Sunday, March 27, 2011 at 1:47pm by Mary

Physics
Initially, mass one (2.10 kg) has a velocity of 5.90 m/s and mass two (2.80 kg) is at rest. After they collide, mass one emerges at an angle theta = 33.0 degrees. What is the speed of mass one after the collision if the collision is completely elastic? (Note, there are ...
Sunday, March 27, 2011 at 1:47pm by Mary

physics
Two balls are approaching each other head-on. Their velocities are +11.9 and -10.5 m/s. Determine the velocity of the center of mass of the two balls if (a) they have the same mass and (b) if the mass of one ball (v = 11.9 m/s) is twice the mass of the other ball (v = -10.5 m...
Thursday, July 25, 2013 at 6:35pm by tcc

physics
A block of mass 7.33 kg in outerspace is moving at 1.72 m/s with no external forces acting on it. After an explosion, the block is split into two parts both having mass equal to half the mass of the original block. The explosion supplies the two masses with an additional 16.7 ...
Sunday, October 18, 2009 at 4:09pm by Anonymous

Physics: Collison/Momentum Problem
A 15 kg mass, moving east at 5 m/s, collides elastically with another 10 kg mass, moving west at 1 m/s. After the collision, the larger mass moves off with a velocity of 3 m/s. What is the final velocity of the smaller mass? Is it 4m/s? Or would it be 2m/s? Do you add the ...
Wednesday, January 25, 2012 at 8:03pm by Cicilia

Chemistry
Is the molar mass of SiO2 60 g/mol (I took the molar mass of Silicon-28, and added Oxygen's atmoic mass-16 and doubled it since it's diatomic). Thanks for checking my work.
Tuesday, June 2, 2009 at 6:20pm by Narasaq

chemistry.
An organic compound A contain 62.0% by mass of carbon, 21.1% by mass of nitrogen, the reminder being hydrogen. Determine the percentage by mass of hydrogen and the empirical formula A.....Can any one help me on that?????
Sunday, September 20, 2009 at 1:30pm by Richard ineed help

physics
three uniform thin rods, each of length L = 16 cm, form an inverted U. The vertical rods each have mass of 14 g; the horizontal rod has mass of 50 g. Where is the center of mass of the assembly (x, y)?
Thursday, November 8, 2012 at 1:42am by rafeh

physics
Three uniform thin rods, each of length L = 16 cm, form an inverted U. The vertical rods each have mass of 14 g; the horizontal rod has mass of 50 g. Where is the center of mass of the assembly (x, y)?
Sunday, November 11, 2012 at 10:03pm by KRISTEL

Physics
Three uniform thin rods, each of length L = 16 cm, form an inverted U. The vertical rods each have mass of 14 g; the horizontal rod has mass of 50 g. Where is the center of mass of the assembly (x, y)?
Monday, November 12, 2012 at 10:59am by emma

physics
a mass of 5 kg descending vertically,draws up a mass of 3 kg by means of a light string passing over a pully.at the end of 4 s,the string.how much higher the 3 kg mass would go?
Thursday, December 20, 2012 at 11:38pm by pallishree

physics
a mass of 5 kg descending vertically,draws up a mass of 3 kg by means of a light string passing over a pully.at the end of 4 s,the string.how much higher the 3 kg mass would go?
Thursday, December 20, 2012 at 11:39pm by pallishree

math
pennies are kept in a jar the mass of the jar is 20 g the mass of each panny is 5g le t the varible p represent the total mass of pennis and the jar. let the variable n represent the number og pennys. 1a. write an equation that represent the relation ship between mass p and n ...
Saturday, October 17, 2009 at 11:34am by josh

8th grade physical science
A student measured the mass of an object and obtained the following results: 10.1 g, 11.0 g, and 10.5 g. The actual mass of the object was 10.6 g. a. What should the student report as the mass of the object? My answer: The student should report the mass as 10.5, because that ...
Tuesday, October 13, 2009 at 3:34pm by Evangeline

chem
how do u calulate percentage composition of NO2 [mass N/mass NO2] x 100 = %Nitrogen [mass O2/mass NO2] x 100 =%oxygen
Saturday, March 17, 2007 at 11:15pm by san

Introductory Physics
I am really nervous about mathematics, so I just want to make sure I am doing these problems correctly. I figure if I am getting the incorrect answer, I must be doing them incorrectly and need to work on them some more. I THINK I have them correct, but I just want to verify. ...
Wednesday, March 30, 2011 at 1:30pm by Cecelia

chemistry
90.92% of the atoms have a mass of 19.988 u, 0.26% of the atoms have a mass of 20.983 u and 8.82% of atoms have a mass of 21.978 u. Calculate the average atomic mass of this element
Friday, May 6, 2011 at 9:47am by susan

Physics PLEASE HELP!
A spring with an unstrained length of 0.076 m and a spring constant of 2.6 N/m hangs vertically downward from the ceiling. A uniform electric field directed vertically upward fills the region containing the spring. A sphere with a mass of 5.09 10-3 kg and a net charge of +6.5...
Monday, January 28, 2013 at 11:23pm by Adriana

physics
A rectangular box of negligible mass measures 5m by 1m by .5m. How many kgs of mass can be loaded onto the box before it sinks in the water? V=5*1*.5 = 2.5m^3 density of water =1g/cm^3 =1000 kg/m^3 I also know that when the density of the mass is greater than the density of ...
Monday, December 3, 2007 at 5:00pm by Tammy

physics
A rectangular box of negligible mass measures 5m by 1m by .5m. How many kgs of mass can be loaded onto the box before it sinks in the water? V=5*1*.5 = 2.5m^3 density of water =1g/cm^3 =1000 kg/m^3 I also know that when the density of the mass is greater than the density of ...
Monday, December 3, 2007 at 8:06pm by Tammy

Atomic Mass
Hi if I divide a molar mass of an element by Avogadro's number (63022X10^23) will i have the mass of 1 atom of the element? Thanks
Wednesday, January 7, 2009 at 3:21pm by charlie

physics
Find the center of mass of the three mass system given that m1 1.90 kg and m2 1.30 kg Specify relative to the center of the left mass "1.00 kg "
Wednesday, October 6, 2010 at 8:58pm by ami

phy
Find the center of mass of the three mass system that m1 = 1.90 kg and m2 = 1.30 kg. Specify relative to the center of the left hand (1.00 kg) mass.
Thursday, October 7, 2010 at 7:00pm by ami

maths
the mass of a boy is 36.1kg when rounded off to 1 decimal place. If his mass is less than 36.1kg, what is his possible mass?
Monday, July 25, 2011 at 10:19am by Joel

AP PHYSICS
A .35 kg ladle sliding on a horizontal frictionless surface is attached to one end of a horizontal spring (with the spring constant (k) =455 N/m) whose other end is fixed. The mass has a kinetic energy of 10 J as it passes through its equilibrium position (the point at which ...
Sunday, November 18, 2007 at 5:49pm by Kristen

Chem: Molar Mass
Hi. What mass of phosporus is present in 5.00 mols of the compound P406 ? I need to use dimensional analysis, and I know that P406 has a mass of 219.88 grams, but I don't know how to get phosphorus by itself. Thank you!
Wednesday, October 10, 2007 at 11:27pm by Johnny

physics
a 15.0 kg mass and a 2.00 kg mass are connected bya string that passes over a frictionless pulley, the 15.0 kg mass lies on a smooth inclined at 45.0 solve for the acceleration of the masses and the tension in the string
Sunday, October 14, 2012 at 8:48pm by bennie

Science
10 g of acetic acid are combined with 5 g of sodium bicarbonate in a beaker with a mass of 25 g. After the reaction, the mass of the beaker with the new solution was only 39 g. How ould this change in mass be explained?
Sunday, May 26, 2013 at 3:16pm by Anonymous

Chemistry
Describe how you can show that a chemical reaction adhers to the law of conservation of mass. Chemical reaction: magnesium hydroxide added to phosphoric acid produces magnesium phosphate and water. Find the mass percentage of each compound as well as the total mass of ...
Wednesday, December 10, 2008 at 9:51pm by Jessica

physics
A block of mass m sliding on a frictionless table is attached to a string that passes through a narrow hole through the center of the table. The block is sliding with speed v0 in a circle of radius r0. (Use any variable or symbol stated above as necessary.) Find angular ...
Tuesday, November 22, 2011 at 6:09pm by Mike

Physics
a simple pendulum consists of a 1.5 kg mass connected to a cored without and mass or friction. Initially the pendulum is vertically positioned when a 2.0 kg mass collides with ie, causing the pendulum to displace vertically upward 1.25 m. After the collision, the 2.0 kg mass ...
Monday, April 22, 2013 at 5:32pm by Natalia

science
how to find the stability of a carbanion attached to a benzene ring with ethersand nitro present
Monday, January 15, 2007 at 3:16am by mayuri

Eng. Quick ?
At the bottom of your cover letter do you have to put resume enclosed or attached or no?
Wednesday, March 25, 2009 at 10:15pm by Molly

physics
A 2.40- bullet embeds itself in a 1.20- block, which is attached to a spring of force constant 770 .
Thursday, December 1, 2011 at 7:34pm by bullet and block

Molecular formula
I have to find the molecular formula for As2O3, to do so I have to divide its molecular mass by its empirical mass. I have worked ou that its molecular mass is 197.9 g/mol. How would I find its empirical mass, is it not the same as its molecular mass? Many thanks I have 197.84...
Saturday, January 20, 2007 at 3:33pm by Mac

chemistry
cold water mass of calimeter+ water: 68.66g mass of calimeter: 19.19g mass of water: 49.47g final temperature of water: 39.1C initial temperature of water: 25.5C delta(T) of water: 13.6C hot water mass of calimeter+ water: 79.55g mass of calimeter: 20.61g mass of water: 58.94g...
Wednesday, November 30, 2011 at 10:44pm by Yuli

physics
A heavier mass m1 and a lighter mass m2 are 18.0 cm apart and experience a gravitational force of attraction that is 9.70 10-9 N in magnitude. The two masses have a combined value of 5.65 kg. Determine the value of each individual mass.
Sunday, June 30, 2013 at 10:43pm by Jarrod

Chem
A bottle of win contains 12.5% ethanol by volume. The density of ethanol (C2H5OH) is .79 g/mL. Calculate the concentration of ethanol in wine as mass percent and molality. I calculated molality as 2.4 m/kg, but I'm stumped on the mass percent [although I'm hitting the right ...
Sunday, March 25, 2007 at 8:47pm by Jessica

PLEASE HELP ME! CHEMISTRY
Naturally occurring cobalt consists of only one isotope, cobalt59, whose relative atomic mass is 58.9332. A synthetic radioactive isotope of cobalt60, relative atomic mass 59.9338, is used in radiation therapy for cancer. A 1.8155 sample of cobalt has an apparent "atomic mass...
Monday, August 29, 2011 at 11:14pm by Aidan

Science
Caluculating Mass! You push yourself on a skateboard with a force of 30 N and accelerate at 0.5m/s 2. Find the mass of the skateboard if your mass is 58 kg.
Tuesday, October 12, 2010 at 6:14pm by Adam

math
a boy mass increases by 12% between is 10 and 11birthday it is mass was 52 kg on his 10 birthday whats was the amount on his mass on his 11 birthday
Saturday, January 28, 2012 at 12:27am by Anonymous

physics
A bead of mass m slides without friction on a vertical hoop of radius R . The bead moves under the combined action of gravity and a spring, with spring constant k , attached to the bottom of the hoop. Assume that the equilibrium (relaxed) length of the spring is R. The bead is...
Thursday, October 17, 2013 at 1:50pm by Anonymous

Physics
A bead of mass m slides without friction on a vertical hoop of radius R . The bead moves under the combined action of gravity and a spring, with spring constant k , attached to the bottom of the hoop. Assume that the equilibrium (relaxed) length of the spring is R. The bead is...
Thursday, October 17, 2013 at 1:20pm by Anonymous

PHYSICS(HELP)
A bead of mass m slides without friction on a vertical hoop of radius R . The bead moves under the combined action of gravity and a spring, with spring constant k , attached to the bottom of the hoop. Assume that the equilibrium (relaxed) length of the spring is R. The bead is...
Friday, October 18, 2013 at 3:49am by Anonymous

physics
A bead of mass m slides without friction on a vertical hoop of radius R . The bead moves under the combined action of gravity and a spring, with spring constant k , attached to the bottom of the hoop. Assume that the equilibrium (relaxed) length of the spring is R. The bead is...
Friday, October 18, 2013 at 10:05pm by Anonymous

PHYSICS(HELP)
A bead of mass m slides without friction on a vertical hoop of radius R . The bead moves under the combined action of gravity and a spring, with spring constant k , attached to the bottom of the hoop. Assume that the equilibrium (relaxed) length of the spring is R. The bead ...
Saturday, October 19, 2013 at 12:08pm by michael

PHYSICS (HELP)
A bead of mass m slides without friction on a vertical hoop of radius R . The bead moves under the combined action of gravity and a spring, with spring constant k , attached to the bottom of the hoop. Assume that the equilibrium (relaxed) length of the spring is R. The bead is...
Monday, October 21, 2013 at 9:21am by Anonymous

physics
A m = 2.51 kg mass starts from rest and slides a distance d down a frictionless theta = 34.6° incline. While sliding, it comes into contact with an unstressed spring of negligible mass. The mass slides an additional 0.220 m as it is brought momentarily to rest by compression ...
Saturday, October 31, 2009 at 3:24pm by Anonymous

Physics-Charges
A wall has a negative charge distribution producing a uniform horizontal electric field. A small plastic ball of mass 0.0261 kg, carrying charge of −102 μC, is suspended by an uncharged, nonconducting thread 0.369 m long. The thread is attached to the wall and the ...
Wednesday, March 7, 2012 at 6:32pm by Joila

physics
two masses m' each are hanging with help of a light string,which passes over mass less pulley. mass A starts leaking out at a rate of u kg/s with velocity v' with respect to mass A. find kinetic energy of block B as a function of time.
Sunday, January 16, 2011 at 7:44am by sreeram

physics
two masses m' each are hanging with help of a light string,which passes over mass less pulley. mass A starts leaking out at a rate of u kg/s with velocity v' with respect to mass A. find kinetic energy of block B as a function of time.
Sunday, January 16, 2011 at 8:41pm by jack

chemistry
A solution prepared by mixing 47.1 mL of 0.4 M AgNO3 and 47.1 mL of 0.4 M TlNO3 was titrated with 0.8 M NaBr in a cell containing a silver indicator electrode and a reference electrode of constant potential 0.175 V. The reference electrode is attached to the positive terminal ...
Saturday, November 9, 2013 at 5:45am by martini

Physics- 2D Collisions
nitially, mass one (2.10 kg) has a velocity of 5.90 m/s and mass two (2.80 kg) is at rest. After they collide, mass one emerges at an angle theta = 33.0 degrees. What is the speed of mass one after the collision if the collision is completely elastic? (Note, there are actually...
Tuesday, March 29, 2011 at 5:03pm by Rob

Honors Chemistry
If the percent (mass/mass) for a solute is 20% and the mass of the solution is 300 g, what is the mass of the solute in solution?
Tuesday, May 25, 2010 at 8:36pm by Emily

Science
For a toy cannon that fires out masses, how will the velocity of a projectile of mass m from the cannon compare to one of mass 2m? [What is the principle behind this since the answer is for mass of 2m a speed of (v/radical 2)] Please help!
Friday, October 9, 2009 at 6:00pm by Dee

Honors Physics
A mass, m1 = 5.00 kg, resting on a frictionless horizontal table is connected to a cable that passes over a pulley and then is fastened to a hanging mass, m2 = 9.0 kg. Find the acceleration of each mass and the tension in the cable. PLEASE HELP!
Tuesday, September 21, 2010 at 9:04pm by Chubba

physics
A bead of mass m slides without friction on a vertical hoop of radius R . The bead moves under the combined action of gravity and a spring, with spring constant k , attached to the bottom of the hoop. Assume that the equilibrium (relaxed) length of the spring is R. The bead is...
Monday, October 21, 2013 at 4:42am by Anonymous

PHYSICS HELP!!!
A bead of mass m slides without friction on a vertical hoop of radius R . The bead moves under the combined action of gravity and a spring, with spring constant k , attached to the bottom of the hoop. Assume that the equilibrium (relaxed) length of the spring is R. The bead is...
Monday, October 21, 2013 at 6:07am by Anonymous

Physics
A bullet of mass m=0.060 kg hits a 5.0 kg block with an initial speed of 225 m/s. The block is connected to a spring that is attached to a wall. The friction between the block and the table is negligible. Upon impact, the bullet bounces back from the box with a speed of 75 m/s...
Saturday, October 27, 2012 at 8:49pm by Rob

physics
Suppose you need to measure the mass of an object, but have only a 7-kg standard mass and a meter stick. Place a knife edge under the 50-cm mark of the meter stick. Then put the 7-kg standard mass at the 39.1-cm mark and place the object so as to balance the standard mass. If ...
Thursday, November 3, 2011 at 7:24pm by Sami

chemistry
Hey, I need help finding out how many moles of CO2 is produced from this reaction. Any help is appreciated, thanks. Mass of empty Erlenmeyer flask (g): 88.000 g Mass of Erlenmeyer flask and 20 mL H2SO4: 112.198 g Mass of 20 mL H2SO4: 24.198 g Trial I Mass of Na2CO3 added to ...
Sunday, March 3, 2013 at 3:43pm by Matti

physics
A mass M = 0.464 kg moves with an initial speed v = 2.98 m/s on a level frictionless air track. The mass is initially a distance D = 0.250 m away from a spring with k = 844 N/m, which is mounted rigidly at one end of the air track. The mass compresses the spring a maximum ...
Saturday, March 24, 2012 at 9:35pm by bob please help

Chemistry
1. What is the percent by mass of a solution that contains 50 grams of solute dissolved in 200 grams of solution? What is the concentration of the same solution in parts per million? 2. What is the percent mass of a solution that contains 75 grams of salt dissolved in 150 ...
Friday, March 25, 2011 at 11:03am by Leora

Science
The electronic balance displays the mass of an apple in kiograms(0.1). What is the mass of the apple? Suppose a recipe for applesauce called for one kilogram of apples. About how many would you need. If the balance says it has a mass of 0.1 kg then that is the mass. You might ...
Thursday, September 28, 2006 at 9:25pm by Jenny

9th grade (math)
pennies are kept in a jar the mass of the jar is 20 g the mass of each panny is 5g le t the varible p represent the total mass of pennis and the jar. let the variable n represent the number og pennys. 1a. write an equation that represent the relation ship between mass p and n ...
Saturday, October 17, 2009 at 12:05pm by jacky

physics
At what frequency would you expect the web to vibrate if an insect of mass 0.52 g were trapped? Hint: use stiffness constant found in part 1. Hint: after the insect is trapped, the mass of the oscillator has increases by insect's mass, so the mass in the formula for natural ...
Monday, March 28, 2011 at 11:12am by Anonymous

Physics(Please, please check)
A uniform horizontal beam is attached to a vertical wall by a frictionless hinge and supported from below at an angle č = 38o by a brace that is attached to a pin. The beam has a weight of 347 N. Three additional forces keep the beam in equilibrium. The brace applies a force ...
Sunday, June 10, 2012 at 2:25pm by Hannah

Physics
To demonstrate standing waves, one end of a string is attached to a tuning fork with frequency 120 Hz. The other end of the string passes over a pulley and is connected to a suspended mass M, as shown. The value of M is such that the standing wave pattern has eight loops “anti...
Monday, October 1, 2012 at 4:15pm by AJ

Physics Classical Mechanics
A bead of mass m slides without friction on a vertical hoop of radius R . The bead moves under the combined action of gravity and a spring, with spring constant k , attached to the bottom of the hoop. Assume that the equilibrium (relaxed) length of the spring is R. The bead is...
Monday, October 21, 2013 at 10:05am by Anonymous

physics
Two balls are approaching each other head-on. Their velocities are +9.30 and -12.1 m/s. Determine the velocity of the center of mass of the two balls for the following conditions. (Use the sign of your answer to indicate the direction.) (a) They have same mass. m/s (b) The ...
Wednesday, November 9, 2011 at 11:48pm by Taylor

business law - Contracts
Jeff wanted to sell his motor boat. He offered it to Sally for $3700. Jeff knew that he intended to remove some special water skiing equipment from the boat, which he planned to give to his best friend, Roger, but he never mentioned to Sally anything about his intention to ...
Tuesday, January 31, 2012 at 2:44pm by Anonymous

physics
"A small 0.5 kg object moves on a frictionless horizontal table in a circular path of radius 1 meter. The angular speed is 6.28 rad/s. The object is attached to a string of negligible mass that passes through a small hole in the table at the center of the circle. Someone ...
Friday, April 1, 2011 at 3:16pm by Seth

Physics
"A small 0.5 kg object moves on a frictionless horizontal table in a circular path of radius 1 meter. The angular speed is 6.28 rad/s. The object is attached to a string of negligible mass that passes through a small hole in the table at the center of the circle. Someone under...
Sunday, April 3, 2011 at 1:50am by Seth

chemistry
The atomic mass of Eu is 151.96. There are only two naturally occurring isotopes of europium, 151Eu with a mass of 151.0 and 153Eu with a mass of 153.0. The natural abundance of the 131Eu isotope must be approximately
Monday, March 29, 2010 at 9:36pm by Kumar

math
Eric has a two rocks samples. One has a mass of 600 grams and the other has a mass of 1 kilogram. He recorded the total mass as 7 kilogrmaas. Explain what he did wrong? What should be the correct answer in grams?
Tuesday, March 25, 2014 at 7:33pm by Math

Chemistry
Boron has only two naturally occurring isotopes. The mass of boron-10 is 10.01294 amu and the mass of boron-11 is 11.00931 amu. Use the atomic mass of boron to calculate the relative abundance of boron-10. Atomic mass of boron is 10.81 How do I solve this?
Wednesday, September 7, 2011 at 8:06pm by Brittany

Science
Which procedure is the best way to find the correct mass of an object in a laboratory experiment? 1)make sure the balance works correctly before starting the measurement. Record the mass for three trials. Then average the masses. 2)Readjust the balance after getting the mass ...
Thursday, October 17, 2013 at 7:06pm by Nicole

physics
A 1.00-kg ball is attached to a string of 0.50 m and swung in a horizontal circle with a velocity of 2.00 m/s. Find the centripetal acceleration. ac=v^2/r = 2.00^2/.50 = 8.0 m/s^2
Wednesday, April 2, 2008 at 9:12pm by Jon

A&P
___________are usually attached to rough endoplasmic reticulum and produce enzymes and other protein componds.
Sunday, September 19, 2010 at 4:41pm by Abby

math
A cable weighing 2 lb/ft is 16 ft long. If a 20-lb weight is attached to the end, find the work done in winding up the chain.
Wednesday, April 18, 2012 at 5:10pm by Tony

maths
For the area shown on the attached chart, show/prove that the magnetic variation in 2013 would be 10°5’E.
Saturday, March 16, 2013 at 7:46pm by Anne

Physics
A small block on a frictionless horizontal surface has a mass of 2.50×10−2 Kg. It is attached to a massless cord passing through a hole in the surface. The block is originally revolving at a distance of 0.300 m from the hole with an angular speed of 1.75 rad/s. The cord ...
Thursday, June 25, 2009 at 11:59pm by Sarah

PHYSICS - HELP
A spring id vertically, as shown below, and a 500g mass is hung from its lower end. The EQUILIBRIUM extension of the spring is observed to be 10.0cm. (1) What is the spring constant of the spring? ANSWER: 49N/m (B) If the is pulled down by 5.00cm and released, what is the ...
Friday, August 5, 2011 at 1:31am by Melissa

PHYSICS - HELP
I NEED HELP ON C THROUGH F. THANK YOU A spring id vertically, as shown below, and a 500g mass is hung from its lower end. The EQUILIBRIUM extension of the spring is observed to be 10.0cm. (1) What is the spring constant of the spring? ANSWER: 49N/m (B) If the is pulled down by...
Sunday, August 7, 2011 at 9:12pm by Melissa

Physics
To demonstrate standing waves, one end of a string is attached to a tuning fork with frequency 120 Hz. The other end of the string passes over a pulley and is connected to a suspended mass M, as shown. The value of M is such that the standing wave pattern has eight loops “anti...
Friday, October 5, 2012 at 6:57pm by AJ

Physics
A mass of 2.2kg is placed on a stiff vertical spring which has a spring constant of 950n/m. The object is then pressed against the spring until it has been compressed a distance of 77cm. The mass is then released and is allowed to be thrown up into the air. How high in the ...
Saturday, February 25, 2012 at 9:20pm by Rob

physics
Two masses are connected by a string. Mass A is on a flat roof and mass B is hanging over the edge of the roof. The mass on the roof is 15 kg and the hanging mass is 5 kg. The edge of the roof is 100 m above the ground. The two masses are initially at rest with the hanging ...
Thursday, November 18, 2010 at 3:07am by Anna

physics
A mass of 5.6 kg lies at the top of a frictionless incline. It is inclined at an angle such that the normal force on the mass is 30 Newtons. If the length of the incline is 58 meters and the mass is originally at rest at the top of the incline and then released, how long does ...
Thursday, October 6, 2011 at 11:26am by Anonymous

Chemistry
A mass of 0.630 g of NaCl is dissolved in 525 g of water. CAlculate the molality. mass of NaCl= 0.630g mass of H20= 525g molar mass of NaCl= 58.44 This is what i did it keeps telling me the answer is wrong. Convert grams to moles of NaCl 0.630 * 1 mol NaCl/58.44= 0.01078 ...
Thursday, May 21, 2009 at 9:43pm by Saira

chemistry
Element x is composed of isotopes x-56 mass 56.0 u and x-59 mass 59.0 u. What is the percentage abundance of each of these isotopes if the atomic mass is 57.3 u?
Wednesday, December 26, 2012 at 1:47pm by Riana

algebra 2
The mass of Saturn is about 5.688 10^23 metric tons. The mass of the sun is about 1.998 x 10^27 metric tons. About how many times the mass of Saturn is the mass of the sun? Give answer in scientific notation. The mass of the sun is about ----- times the mass of Saturn.
Sunday, June 13, 2010 at 8:56pm by at

chemistry
1. mass of flask + cap = 92.53 g 2. mass of flask + cap + condensate = 94.34 g 3. mass of condensate = 1.81 g 4. volume of flask = 160 ml 5. temperature of water = 99.3 celsius 6. barametric pressure = 757 ml of mercury 7.. molar mass of gas(experimental) = ??? 8. formula of ...
Thursday, May 3, 2012 at 12:44pm by preshi

Chemistry
mass of empty flask with stopper = 32.634 g mass of flask with water and stopper = 59.479 g density of the water = 0.9973 g/cm^3 mass of water = 26.845 g volume of water = 26.918 cm^3 the flask is then emptied and an unknown substance is added mass of flask with new liquid and...
Tuesday, October 16, 2007 at 5:05pm by Vanessa

Math
An estimate of the mass of a new, unsharpened pencil is about __________. I think it's about 35 grams? Fill in the blanks. A good reference to use when estimating the mass of a small object is _____. It has a mass of about_________. Thank you!
Tuesday, January 22, 2013 at 6:16pm by Jessica

Physics
A mass is thrown upwards with an initial velocity of 30m/s. A second mass is dropped from directly above, a height of 60m from the first mass 0.50s later. When do the masses meet and how hight is the point where they meet?
Sunday, October 11, 2009 at 2:43pm by B

Chemistry
Calculate and compare the mass of the reactants with the mass of the products for each equation. a)2KClO3 (s) ==> 2KCl(s) + 3O2 (g) b)4NH3(g) + 6NO(g) ==> 5N2(g) + 6H2O(g) c)4K(s) + O2(g) ==> 2K2O(s) Show that each balanced equation obeys the law of conservation of ...
Monday, April 5, 2010 at 1:36pm by Ralph

phy
Two objects attract each other gravitationally with a force of 3.5 10-10 N when they are 0.33 m apart. Their total mass is 4.0 kg. Find their individual masses. I got my answers but its say incorrect. the values i got 3.43 for larger mass and 0.57 small mass
Friday, September 17, 2010 at 6:15pm by ami

I really dont get this. physics
A .35 kg ladle sliding on a horizontal frictionless surface is attached to one end of a horizontal spring (with the spring constant (k) =455 N/m) whose other end is fixed. The mass has a kinetic energy of 10 J as it passes through its equilibrium position (the point at which ...
Sunday, November 18, 2007 at 6:12pm by Kristen

chemistry
mass of crucible- 26.4574g mass of crucible and hydrated sample- 27.7617g mass of hydrated sample 1.3043g mass of crucible and dehydrated sample- 27.5693g mass of dehydrated sample- 1.1119g mass of filter paper- 0.7089g mass of filter paper and copper- 1.1418g mass of copper...
Tuesday, February 19, 2013 at 1:42pm by Johny

physics
The pendulum shown right has a mass of 0.26 kg and moves to the right from point B to point A. At point B the speed of the mass is 3.2 m/s. (i) What is the change in the gravitational potential energy in the motion from B to A? (ii) What is the mass speed at point A? (iii) If...
Friday, March 8, 2013 at 9:40am by Meder

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