# If the relative atomic mass of CH2O is calculated it's empirical formula (C=12,H=1,O=16)

46,086 questions, page 185
1. ## PHYSICS

A straight 1.2 m length iron rod is moved at 10 m/s through the earth's magnetic field at a location where it has magnitude 1.0 × 105 T. What is the magnitude of the induced emf between one end of the wire and the other end? What formula do I use?

asked by Pat on May 27, 2012
2. ## ALGEBRA

A car dealer will sell you a used car for \$7,542 with \$542 down and payments of \$213.27 per month for 36 months. What is the APR? (Use the formula on page 156. Round each answer to the nearest tenth.)

asked by Daniel on May 20, 2012
3. ## physics

a 700 N man stands on a scale on the floor of an elevator. The scare records the force it exerts on whatever is on it. What is the scale reading if the elevator has an acceleration of 1.8 m/s squared up ? I need help with what formula (s) to use to get the

asked by courtland on February 5, 2010
4. ## science

Each month the Speedy Dry Cleaning Company buys one barrel (0.160 m3) of dry cleaning fluid. Ninety percent of the fluid is lost to the atmosphere and 10% remains as residue to be disposed of. The density of the dry cleaning fluid is 1.5940 g/mL. Draw a

asked by Jazmin on January 30, 2011
5. ## Environmental science

Each month the Speedy Dry Cleaning Company buys one barrel (0.160 m3) of dry cleaning fluid. Ninety percent of the fluid is lost to the atmosphere and 10% remains as residue to be disposed of. The density of the dry cleaning fluid is 1.5940 g/mL. Draw a

asked by Jazmin on January 28, 2011
6. ## Physics multiple choice

1. The normal force is always less than or equal to force of gravity a) True b) False 2. What is the value of the normal force? (there is an image of a box with a mass of 10kg and it is sitting on a flat horizontal surface) a) 98 N [up] b) 98 N [down] c)

asked by Jessie on December 17, 2013
7. ## physics- multiple choice

1. The normal force is always less than or equal to force of gravity a) True b) False 2. What is the value of the normal force? (there is an image of a box with a mass of 10kg and it is sitting on a flat horizontal surface) a) 98 N [up] b) 98 N [down] c)

asked by Jessie on December 16, 2013
8. ## Physics

In cold climates, including the northern United States, a house can be built with very large windows facing south to take advantage of solar heating. Sunlight shining in during the daytime is absorbed by the floor, interior walls, and objects in the room,

asked by Laketa on April 17, 2012
9. ## physics

Black hole in X-Ray Binary. (2.75/11.0 points) An X-ray binary consists of 2 stars with masses (the accreting compact object) and (the donor). The orbits are circular with radii and centered on the center of mass. (a) Find the orbital period of the binary

asked by juanpro on November 22, 2013
10. ## physics

A pendulum with a bob of mass 30g is lifted to height of 5.00cm above its lowest point and allowed to fall so that collides elastically with a block of mass 20g that rests on a smooth horizontal floor. The block stops 5 seconds after the collision.

asked by Eryy on July 28, 2013
11. ## Physics

A particle of mass m1 = 2.5 kg moving along the x axis collides with a particle of mass m2 = 4.9 kg initially at rest. The incoming particle is deflected in the direction 22 degrees above the x axis, whereas the target particle moves off at 15 m/s at 37

asked by Ana on November 5, 2016
12. ## science

Sitting on a horizontal track is a mass of 10kg. One end of the track is raised untill the mass just begins to slip. If the coeffieient of static friction is .4 what is the minimum angle at which the mass begins to slip? mgSinTheta = mg*mu*CosTheta

asked by Henry on August 24, 2006
13. ## physics

A 500-kg cannon and a supply of 80 cannon balls, each with a mass of 45.0 kg, are inside a sealed railroad car with a mass of 11000 kg and a length of 49 m. The cannon fires to the right; the car recoils to the left. The cannon balls remain in the car

asked by Katie on March 3, 2012

Kamala had5,026 grams of flour in a canister. She bought a 4,157 gram bag of flour. She poured some flour from the bag to the canister. As a result, the mass of the flour in the canister is now twice the mass of the flour in the bag. How much is in the bag

asked by Brandy on May 14, 2012
15. ## Chemistry

For many years the recovery of gold-that is, the seperation of gold from other materials-involved the use of potassium cyanide: 4AU + 8KCN + 02 +2H20 -> 4KAu(CN)2 + 4KOH What is the minimum amount of KCN in moles needed to extract 29.0 g (about an ounce)

asked by Kate on August 2, 2010
16. ## Chemistry

Calculate the molarity of Fe(NO3)3 in Solution A. Solution A: Mass of Fe(NO3)3 solid: 1.21g & Vol of Solution: 100mL In a previous ? Using the mass I weighed 404.0g/mol to calculate moles of Fe(NO3)3 in solid hydrate----I got 0.00300 mol Fe(NO3)3)

asked by Rosie on October 17, 2016
17. ## Physics

How much energy is released in the beta decay of 14 C? Since carbon-14 decays into Nitrogen-14, the mass of carbon 14 is 14.003242 and the mass of nitrogen 14 is 14.003074, What I did was: (14.003242-14.003074)u * 931.5 MeV/c^2 = (0.156 MeV/c^2)*c^2 = .156

asked by Mariana on December 3, 2011
18. ## Physics

A 1.500m long uniform beam of mass 30.00 kg is supported by a wire as shown in the figure. The beam makes an angle of 10.00 degrees with the horizontal and the wire makes and angle of 30.00 degrees with the beam. A 50.00 kg mass, m, is attached to the end

asked by Sharon on November 15, 2012
19. ## physics

• If you use a cart with half the mass, you reach _______final speed. • If you use half the force, you reach ______ final speed. • If you push twice as long, you cover _______ distance during pushing. • If you use a cart with half the mass, you

asked by Ted on February 17, 2014
20. ## maths and physics

A particle of mass 4 kg is attached to one end of an inelastic string and a particle of mass 2 kg is attached to the other end of the string.The string has length 4m and is hung over a smooth pivot at its midpoint. The Pivot lies 3m above the ground.How

asked by james on March 3, 2013
21. ## maths

A particle of mass 4 kg is attached to one end of an inelastic string and a particle of mass 2 kg is attached to the other end of the string.The string has length 4m and is hung over a smooth pivot at its midpoint. The Pivot lies 3m above the ground.How

asked by Jess on March 2, 2013
22. ## Chemistry

Ca+N-->Ca3N2 -What is limiting reagent? -Mass of calcium nitride formed when 50.0g of calcium reacts with 50.0g of Nitrogen? -Excess? CAN SOMEONE DOUBLE CHECK MY ANSWERS: Calcium is limiting reagent. Mass of Ca3N2: 68.4g Ca3N2 Excess: 38.4N left over.

asked by Chris on November 16, 2017
23. ## physics

You have a mass of hot water at 90 C and twice the mass of cool water at 10C. The hot and cold water are mixed together. Will the final temperature be midway between 10C and 90C, closer to 90C, or closer to 10C? Explain your reasoning.

asked by college on July 4, 2010
24. ## Chemistry

How does the molar mass of molecules affect the boiling points? e.g MOlar masses HI-->127.9 HF--->20.07 HCl---> 36.45 Boling points HI-->-35.55 HF---> 20 HCl--->-114.17 can it be said that except for HF molecule, as molar mass increases the boling points

asked by LALA on March 27, 2010
25. ## physics

A ball mass 500g rolls at a velocity of 2m/s and hits another ball of mass 250g 1.What is the velocity of a small ball if the bigger ball immediately stops after collision? 2.What is the velocity of the bigger ball if it rolls in the same direction with

asked by lufuno nemugumoni on January 21, 2012
26. ## chemistry

Temp - 650 Pressure - 760mm Hg mass - 0.927g volume - ? I need to work out the volume I know that Pv=nRT but I just can't figure this out. I've been told the answer is 176cm3 but I don't get that. Can someone please explain this to me. You don't have

asked by sarah on February 28, 2007
27. ## physics

A child of mass m swings in a swing supported by two chains, each of length R. The mass of the swing’s seat is negligible. If the tension in each chain at the lowest point is T, find: 4.1 the child’s speed at the lowest point; 4.2 the force exerted by

28. ## specific heat of Aluminom

What is the specific heat of Aluminom if it takes 1100 calories to take the temp. from 10 degrees C to 80 degrees C and the block of Aluminon has a mass of 60 grams? q = massAl x specific heat x (Tf-Ti) q is 1100 calories Tf is final T Ti is initial T mass

asked by brandi on December 19, 2006
29. ## science

Calculating A sample of barium nitrate is placed into a jar containing water. The mass of the barium nitrate sample is 27 g. Assume the water is at 20 ºC and that the resulting barium nitrate solution is saturated. What mass of water is present in the

asked by diane on December 21, 2011
30. ## physics

a.)At rest, a car's horn sounds at a frequency of 410 Hz. The horn is sounded while the car is moving down the street. A bicyclist moving in the same direction with one-third the car's speed hears a frequency of 381 Hz. What is the speed of the car? b.)Is

asked by sanchi on August 5, 2007
31. ## science

humidity is the amount of water vapor in the air at a given time.if the air at 75 degrees holding the maximum amount of moisture that it can,and the temperture suddenly drops to 60degrees,what is likely to be the result? a)precipitation will be released in

asked by yaz on October 11, 2007
32. ## physics

hello! I have been having a lot of trouble with one physics problem that I have for homework: any help would be greatly appreciated! 'A block of mass 12 kg starts from rest and slides a distance of 8 m down an inclined plane making an angle of 40 with the

asked by Ty on November 25, 2007
33. ## Physics

A frustrated hockey player, at rest on a frictionless ice rink, throws his stick into the crowd. Since you don’t normally go to hockey games, you decide to turn this into a physics problem and calculate the mass of this player. You observe that the stick

asked by Juhi on April 22, 2016
34. ## Physics

At the start of your throw of a 5.6-kg bowling ball, your arm is straight behind you and horizontal (Figure 1) . Your arm is 0.64 m long, has a rotational inertia of 0.48 kg⋅m2 and has a mass of 3.5 kg with its center of mass 0.28 m from your shoulder

asked by Cosmo on March 26, 2016
35. ## Chemestry

To extract gold from its ore, the ore is treated with sodium cyanide solution in the presence of oxygen and water. 4 Au(s) + 8 NaCN(aq) + O2(g) + 2 H2O(l) 4 NaAu(CN)2(aq) + 4 NaOH(aq) (a) Determine the mass of gold that can be extracted if 29.3 g sodium

asked by Kenah Smith on February 6, 2013
36. ## PHYSICS

1....How much force needed to bring a 3200 lb car from rest to a velocity of 44 m/s in 8 sec.? 2....A ball with a mass of 2 kg move to the right with a speed of 2 m/s. It hits a ball of mass 0.50 kg which is at rest. After collision the second ball moves

asked by EM on February 18, 2011
37. ## Chemistry

To extract gold from its ore, the ore is treated with sodium cyanide solution in the presence of oxygen and water. 4 Au(s) + 8 NaCN(aq) + O2(g) + 2 H2O(l) 4 NaAu(CN)2(aq) + 4 NaOH(aq) (a) Determine the mass of gold that can be extracted if 21.4 g sodium

asked by Dovahkiin on February 19, 2011
38. ## chemistry

To extract gold from its ore, the ore is treated with sodium cyanide solution in the presence of oxygen and water. 4 Au(s) + 8 NaCN(aq) + O2(g) + 2 H2O(l) 4 NaAu(CN)2(aq) + 4 NaOH(aq) Determine the mass of gold that can be extracted if 27.4 g sodium

asked by tg on February 7, 2010
39. ## Chemistry

Cola drinks have a phosphoric acid content that is described as `from 0.057% to 0.084% of 75% phosphoric acid, by mass." Estimate the pH range of cola drinks corresponding to this average range of H3PO4 content. I am having trouble with the wording of this

asked by Ken on February 3, 2015
40. ## Chemistry

To extract gold from its ore, the ore is treated with sodium cyanide solution in the presence of oxygen and water. 4 Au(s) + 8 NaCN(aq) + O2(g) + 2 H2O(l) 4 NaAu(CN)2(aq) + 4 NaOH(aq) Determine the mass of gold that can be extracted if 27.4 g sodium

asked by tdb on February 9, 2010
41. ## Chemestry

To extract gold from its ore, the ore is treated with sodium cyanide solution in the presence of oxygen and water. 4 Au(s) + 8 NaCN(aq) + O2(g) + 2 H2O(l) 4 NaAu(CN)2(aq) + 4 NaOH(aq) (a) Determine the mass of gold that can be extracted if 29.3 g sodium

asked by Kenah Smith on February 6, 2013
42. ## Chemestry

To extract gold from its ore, the ore is treated with sodium cyanide solution in the presence of oxygen and water. 4 Au(s) + 8 NaCN(aq) + O2(g) + 2 H2O(l) 4 NaAu(CN)2(aq) + 4 NaOH(aq) (a) Determine the mass of gold that can be extracted if 29.3 g sodium

asked by Kenah Smith on February 6, 2013
43. ## Physics

Find the magnitude of the gravitational attraction force that the earth exerts on a 62-kilogram astronaut who is 8.00 X 10^7 meters away from the center of the earth. Useful numbers: M^earth=5.98 X 10^24kg; G=6.67 X 10^-11 N*m^2kg^-2 Please walk me through

asked by Jen on June 11, 2012
44. ## physics

A cart running on frictionless air tracks is propelled by a stream of water expelled by a gas-powered pressure washer stationed on the cart. There is a 1.0-m3 water tank on the cart to provide the water for the pressure washer. The mass of the cart,

asked by HELP!!!! on March 6, 2011
45. ## Chemistry

A toothpaste contains 0.220 % by mass sodium fluoride used to prevent dental caries and 0.32 % by mass triclosan C12H7Cl3O2, an antigingivitis agent. One tube contains 119 g of toothpaste. How many fluoride ions, F−, are in the tube of toothpaste? How

asked by xyz on November 27, 2015
46. ## Physics

A car is parked on a cliff overlooking the ocean on an incline that makes an angle of 21.0° below the horizontal. The negligent driver leaves the car in neutral, and the emergency brakes are defective. The car rolls from rest down the incline with a

asked by James on February 20, 2014
47. ## physics

A car is parked on a cliff overlooking the ocean on an incline that makes an angle of 25.0° below the horizontal. The negligent driver leaves the car in neutral, and the emergency brakes are defective. The car rolls from rest down the incline with a

asked by Anonymous on October 7, 2010
48. ## physics

A car is parked on a cliff overlooking the ocean on an incline that makes an angle of 20.0° below the horizontal. The negligent driver leaves the car in neutral, and the emergency brakes are defective. The car rolls from rest down the incline with a

asked by Elisa on June 1, 2008
49. ## physics

A car is parked on a cliff overlooking the ocean on an incline that makes an angle of 25.0° below the horizontal. The negligent driver leaves the car in neutral, and the emergency brakes are defective. The car rolls from rest down the incline with a

asked by Anonymous on October 7, 2010
50. ## Physics

A car is parked on a cliff overlooking the ocean on an incline that makes an angle of 20.0° below the horizontal. The negligent driver leaves the car in neutral, and the emergency brakes are defective. The car rolls from rest down the incline with a

asked by <3 on September 15, 2013
51. ## English

Using the words biometer chronometer hydrometer micrometer perimeter phonometer thermometer put them in the correct order in sentences below. PLEASE CORRECT ME IF I'M WRONG!! 1.The THERMOMETER registered an increase in temperature. 2.He used a BIOMETER to

asked by Trey on November 18, 2013
52. ## chemistry

i had a lab that combined 1/2 cup of H2O2 (118.3 ml) and 2 tsp of yeast. is the equation for the reaction 2H2O --> 2H2O + O2 what would the mass be for each product in the reation? Is the density of H2O2 1.4g/ml? Here is some interesting reading on this

asked by key on January 29, 2007
53. ## College Chemistry

"A student weighs 0.347 g of KHP on a laboratory balance. The KHP was titrated with NaOH and the concentration of the NaOH determined to be 0.110 M. For the second titration, the student correctly diluted 6 M HCl from the reagent shelf using a graduated

asked by James on October 20, 2010
54. ## Engineering

A physics major is working to pay his college tuition by performing in a traveling carnival. He rides a motorcycle inside a hollow transparent plastic sphere. After gaining sufficient speed, he travels in a vertical circle with a radius of 13.4 . The

asked by Lama on April 28, 2013
55. ## Physics

A vessel at rest explodes breaking into three pieces. Two pieces, having equal mass fly off perpendicular to one another with the same speed of 30 m/s. The third piece had three times the mass of each other piece. What are the magnitude and direction of

asked by sarah on February 10, 2007
56. ## College math

Determine whether the following function is a one-to-one function,and if the function is a one-to-one, find a formula for the inverse. F(x)=5/(x+3)

asked by Michala on August 2, 2014
57. ## College math

Determine whether the following function is a one-to-one function,and if the function is a one-to-one, find a formula for the inverse. F(x)=(5x-6)/(2x+3)

asked by Michala on August 2, 2014
58. ## graphing question

how do i get the slope formula of: (4,-1) and (3,-1)? Then the Point slope form:Slope=4,passes through (1,3)?

asked by Joel on December 5, 2012
59. ## College math

Determine whether the following function is a one-to-one function,and if the function is a one-to-one, find a formula for the inverse. F(x)=x^3-27

asked by Michala on August 2, 2014
60. ## Physics 5

Two blocks are free to slide along the frictionless wooden track ABC shown in Figure P9.20. A block of mass m1 = 5.00 kg is released from A. Protruding from its front end is the north pole of a strong magnet, repelling the north pole of an identical magnet

asked by Anonymous on October 20, 2011
61. ## physics

A dad pushes tangentially on a small hand-driven merry-go-round and is able to accelerate it from rest to a frequency of 16 rpm in 11.5 s. Assume the merry-go-round is a uniform disk of radius 3.0 m and has a mass of 790 kg, and two children (each with a

asked by brooke on June 21, 2012
62. ## chemistry (Pls Bob check for me)

Aspirin c9h8oh molar mass = 180.1g/mol can be prepared by the reaction of salicylic acid c7h603 molar mass = 13801 g/mol with acetic anhydride c6h603, according to the following equation. A chemist starts with 2 gram of salicylic acid reacts it with excess

asked by Fai on April 28, 2013
63. ## Physics

An engineer has an odd-shaped object of mass 16 kg and needs to find its rotational inertia about an axis through its center of mass. The object is supported on a wire along the desired axis. The wire has a torsion constant κ = 0.4 N· m. If this torsion

asked by Shane on April 15, 2015

Ben pulls a rope that is attached to a wagon with a magnitude of 300N. He pulls it in a way that te rope is at an angle of 30 degrees from the horizontal. The mass of the wagon is 2kg and the mass of Mike, who sits on the wagon, is 20kg. While the wagon

asked by Ana on August 28, 2014
65. ## Chemistry

Three people weigh on a standard mass of 2.00 g on the same balance. Each person obtains a reading of 7.32 for the mass of the standard. These results imply that the balance that was used is ___________. a) neither accurate nor precise b) accurate c)

asked by Bryan on February 20, 2014
66. ## Chemistry

is the molar mass value of a volatile liquid, such as ethanol, high or small? Usually small, but there are exceptions. The ability to be volatile means that the attractive forces between molecules in the liquid and vapor have to be small, so non polar

asked by michelle on January 20, 2007
67. ## Physics

A vertical container with base area of length L and width W is being filled with identical pieces of candy, each with a volume of v and a mass m. Assume that the volume of the empty spaces between the candies is negligible. If the height of the candies in

asked by AGuy on September 1, 2014
68. ## Science

1) Instead of using the word "random",is it acceptable to say particles in a liquid move about in "different" directions? 2) Why does ice have a higher density than water vapour? Is it because ice has a greater mass in a fixed volume? 3) The statement

asked by anne on January 26, 2009
69. ## Science

The space shuttle has a mass of 2,000,000 kg. At liftoff, the engines generate a force of 32,000,000 N. What is the velocity of the shuttle after 10 minutes if the acceleration rate were 13 m/s/s? What is the acceleration of the shuttle? The trust force is

asked by tiarra on December 29, 2006
70. ## physics

A blue puck with a mass of 3.90×10−2 , sliding with a speed of 0.170 on a frictionless, horizontal air table, makes a perfectly elastic, head-on collision with a red puck with mass , initially at rest. After the collision, the velocity of the blue puck

asked by Anonymous on October 24, 2010
71. ## Physics

Two physical pendulums (not simple pendulums) are made from meter sticks that are suspended from the ceiling at one end. The sticks are uniform and are identical in all respects, except that one is made of wood (mass = 0.17 kg) and the other of metal (mass

asked by Anonymous on November 8, 2011
72. ## Physics

Two physical pendulums (not simple pendulums) are made from meter sticks that are suspended from the ceiling at one end. The sticks are uniform and are identical in all respects, except that one is made of wood (mass = 0.17 kg) and the other of metal (mass

asked by Anonymous on November 8, 2011
73. ## physics

In Fig. 12-51, uniform beams A and B are attached to a wall with hinges and loosely bolted together. Beam A has length LA = 2.55 m and mass 49.0 kg; beam B has mass 69.0 kg. The two hinge points are separated by distance d = 1.86 m. In unit-vector

asked by Sarah on December 29, 2010
74. ## Physics

Two scales support a massless plank from either end, separated by 3 m. A person, whose height is less than 3 m, lies down on the plank with their head on the leftmost scale. The leftmost scale reads 314 N, and the rightmost scale reads 112 N. (a) Calculate

asked by Shirin on April 22, 2016
75. ## chemistry

An alka-seltzer tablet weighing 3 grams is added to a flask of water (weighing 250 grams).At the end of the experiment, the flask weighs a total of 249.6 grams.Explain why this experiment does not seem to follow the Law of Conservation of Mass and how the

asked by anonymous on September 24, 2014
76. ## Itroductory Physical Science

Spherical lead shot are poured into a square tray, 10 centimeters on a side, until they completely cover the bottom. The shot are poured from the tray into a graduated cylinder, which they fill to the 20-cm3 mark. What is the diameter of a single shot? How

asked by Sara on April 10, 2010
77. ## Physics

An explorer in the dense jungles of equatorial Africa leaves his hut. He takes 41 steps at an angle 45∘ north of east, then 81 steps at an angle 60∘ north of west, then 49 steps due south. Assume his steps all have equal length. Save him from becoming

asked by christina on January 19, 2014
78. ## Chemistry

Superphosphate, a water soluble fertilizer, is sometimes marked as a "triple phosphate". It is a mixture of Ca(H2PO4)2 + 2CaSO4. Ca3(PO4)2 + 2H2SO4 --> Ca(H2PO4)2 + 2CaSO4 If you treat 400g of calcium phosphate with 267g of sulfuric acid, how many g of

asked by Ruby on January 8, 2011
79. ## science - chemistry pH problems

Here is the hint I received on how to solve those tough pH problems I posted earlier: Both of these can be solved using the H-H and doing the algebra. The math itself is hard to type out, but in Q1 the values of [NaA] and [HA] are 0.04805 and 0.15195. In

asked by ajones51 on October 11, 2006
80. ## physics

A star of mass 2.0 1031 kg that is 4.8 1020 m from the center of a galaxy revolves around that center once every 4.2 108 years. Assuming that this star is essentially at the edge of the galaxy, each of the stars in the galaxy has a mass equal to that of

asked by Sam on July 16, 2010
81. ## Science

Your family is going to have a contractor build a pool in your backyard. Your mom wants to make this a learning experience, so she asks you to find the mass of the water that will fill the pool. She has told you that the pool holds 75,700 L of water, and

asked by Angela on September 26, 2014
82. ## Environmental science

I know how environmental science branches off to various sciences- how does astronomy (to be specific, the discovery that Pluto's not a planet anymore) relates to environmental science? Thank you! Reclassifying Pluto as "not a planet" is NOT a discovery.

asked by Jin on September 6, 2006
83. ## English

I added a few things I'd like you to check. Is the past perfect possible in sentence 2? Thank you. 1)He is so tired that he soon falls asleep. When he wakes up he finds a loaf of bread and a jug of water beside him. 2) He thinks the water is drugged.

asked by Henry2 on September 2, 2011
84. ## Physics/Mechanics

A particle A of mass 150g lies at rest on a smooth horizontal surface. A second particle B of mass 100g is projected along the surface with a speed of u m/s and collides directly with A. On collision the masses coalesce and moves on with a speed of 4 m.s .

asked by Anonymous on March 20, 2017
85. ## Physics

A star with the same mass and diameter as the sun rotates about a central axis with a period of about 29.2 days. Suppose that the sun runs out of nuclear fuel and collapses to form a white dwarf star with a diameter equal to that of the earth. Assume the

asked by Lindsay on December 23, 2011
86. ## Physics Lab

Collision derivation problem. A car is released from rest on a frictionless inclined plane. Assume h/L is approximately equal to y/x. equations. If the car has a mass of 0.2 kg, the ratio of height to width of the ramp is 11/110, the initial displacement

asked by Tiff on July 20, 2013
87. ## Math

POOL:A diver on a spring board that is 3 meters above the surface of the pool. Another pool diver is below the surface of the pool. a. Write an integer for the position of each diver relative to surface the pool. b. Find absolute value of each integer. c.

asked by Sravya on March 8, 2018
88. ## Physics

How does the electric potential energy (EPE) between two point charges depend upon their separation s? a. EPE ∝ 1/s b. EPE ∝ s c. EPE ∝ 1/s2 d. EPE ∝ s2 I want to say it's a. since it's part of the formula UE = kq1q2/s but I'm not too sure if that

asked by Brian on January 21, 2018
89. ## Math (Ms.Sue)

Find the circumference of a circle whose area is 452.16 square meters. (Use 3.1416 as the value of π.)  A. 12 meters B. 75.3984 meters C. 24 meters D. 37.6992 meters I don't know what formula to use for this equation.

asked by Brooklyn on September 15, 2015
90. ## Physics

For each of the following scenarios, indicate whether the oscillation period of the block becomes shorter, longer or remains unchanged. Note: you must clearly mark your answer (for example, highlight it in red) from the multiple-choice list below and you

asked by Anonymous on July 9, 2013
91. ## Physics

Not sure where to go with this problem, any help is appreciated! A bike is turned upside down for repairs. The front wheel can be described as a hoop with radius R=0.6 m and mass M=1.0 kg and a small point mass m=0.005 kg attached to the perimeter to

asked by Jamie on November 29, 2016
92. ## Physics

Not sure where to go with this problem, any help is appreciated! A bike is turned upside down for repairs. The front wheel can be described as a hoop with radius R=0.6 m and mass M=1.0 kg and a small point mass m=0.005 kg attached to the perimeter to

asked by Jamie on November 29, 2016
93. ## Physics

*I really don't know how to get started. I have done lots of the homework, but this one (and a couple of others) are really giving me PROBLEMS.* A stockroom worker pushes a box with a mass 10.5 kg on a horizontal surface with a constant speed of 3.00 m/s.

asked by John on October 1, 2006
94. ## physics

A child, who is 45 m from the bank of a river is being carried downstream by the river's swift current of 1.0 m/s. As the child passes a lifeguard on the river's bank, the lifeguard starts swimming in a straight line until she reaches the child at a point

asked by Jean on September 3, 2014
95. ## College Chemistry

The Question Is: "A student weighs 0.347 g of KHP on a laboratory balance. The KHP was titrated with NaOH and the concentration of the NaOH determined to be 0.110 M. For the second titration, the student correctly diluted 6 M HCl from the reagent shelf

asked by James on October 19, 2010
96. ## Chemistry

The Question Is: "A student weighs 0.347 g of KHP on a laboratory balance. The KHP was titrated with NaOH and the concentration of the NaOH determined to be 0.110 M. For the second titration, the student correctly diluted 6 M HCl from the reagent shelf

asked by James on October 20, 2010
97. ## science

a bowling ball with a mass of 10 kg and a bowling pin with a mass of 0.5kg, are standing 2m apart, from centre to centre. what is the force of attraction between the bowling ball and the pin

asked by wendy Thomas on June 7, 2013
98. ## physics

Two children are balancing on a teeter-totter. One child has a mass of 30.0 kg and is sitting 1.3 meters from the pivot. The second child is sitting 0.8 meters from the pivot. What is the mass of the second child

asked by kate on October 21, 2010
99. ## physics

Two children are balancing on a teeter-totter. One child has a mass of 30.0 kg and is sitting 1.3 meters from the pivot. The second child is sitting 0.8 meters from the pivot. What is the mass of the second child

asked by kate on October 21, 2010
100. ## Energy and momentum Physics

two cars, one with mass m1=1000kg and the other with mass m2= 4000kg crash in an intersection. Before the crash, car m1 was headed east with a speed of v1i= 25 m/s and the car m2 was headed north with a speed of v2i= 10m/s. After the crash, the cars stick

asked by Chris on February 3, 2011