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2012
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Questions Asked on March 8, 2012

An object with mass 3.0 kg is attached to a spring with spring stiffness constant k = 300 N/m and is executing simple harmonic
1. 5 answers
2. asked by Nicole
3. 17,058 views
It took 1800 J of work to stretch a spring from its natural length of 2m to a length of 5m. Find the spring's force constant.Ple
1. 2 answers
2. asked by JEUCD 37
3. 10,915 views
A student decides to move a box of books into her dormitory room by pulling on a rope attached to the box. She pulls with a
1. 1 answer
2. asked by Cindy
3. 6,059 views
Write the standard cell notation for a galvanic cell with a silver cathode and a zinc anode.
1. 2 answers
2. asked by princess
3. 5,692 views
Complete and balance the following equationsNaHCO3(s)+H+(aq)---> CaO(s)+C(s)---> C(s)+H2O(g)---> CuO(s)+CO(g)---> If possible
1. 2 answers
2. asked by Chill
3. 5,598 views
a pitcher throws a 0.145-kg baseball at a velocity of 30.0 m/s. how much kinetic energy does the ball have?
1. 3 answers
2. asked by celeste
3. 5,273 views
Find the change in the gravitational force between two planets if the masses of both planets are doubled but the distance
1. 3 answers
2. asked by jim
3. 5,079 views
Name the lengths of the sides of three rectangles with perimeters of 12 units. Use only whole numbers.My son did -2-4-2-4 And
1. 11 answers
2. asked by Dw
3. 5,004 views
A box with an open top is to be made from a square piece of cardboard by cutting equal squares from the corners and turning up
1. 3 answers
2. asked by Candy
3. 4,526 views
A long straight horizontal wire carries a current = 3.90 A to the left. A positive 1.00 C charge moves to the right at a
1. 1 answer
2. asked by john
3. 4,193 views
A mass m at the end of a spring vibrates with a frequency of 0.87 Hz. When an additional 602 g mass is added to m, the frequency
1. 1 answer
2. asked by Tom
3. 3,800 views
1) Calculate the molarity of a solution of sodium hydroxide, NaOH,if 23.64 mL of this solution is needed to neutralize 0.5632g
1. 4 answers
2. asked by HELP PLEASE
3. 3,773 views
A bullet of mass of 30g and travelling at a speed of 200msˉ¹ embeds itself in a wooden block. The bullet penetrates a distance
1. 2 answers
2. asked by James
3. 3,688 views
A smooth circular hoop with a radius of 0.400 m is placed flat on the floor. A 0.450-kg particle slides around the inside edge
1. 1 answer
2. asked by Anonymous
3. 3,685 views
Identify the subjects of the following sentences.Jacob's favorite poker game is Texas Hold'em
1. 5 answers
2. asked by David
3. 3,463 views
the elecric potential at a certain point is space is 12 V. What is the electric potential energy of a -3.0uc charge placed at
1. 1 answer
2. asked by josh
3. 3,457 views
Calculate the force of gravity between Earth (mass = 6.0 * 10^24 kg) and the Sun (mass = 2.0×10^30 kg). The average Earth-Sun
1. 1 answer
2. asked by jim
3. 3,381 views
A -4.0UC charge is located 0.45m to the left of a +6.0uc charge. what is the magnitude and direction of the electrostatic force
1. 2 answers
2. asked by josh
3. 3,356 views
Could someone help me setup an equation for this equation?--------------------------------- A city bus system carries 4000
1. 6 answers
2. asked by Jake
3. 3,225 views
a 75w and 50 w incandescent light bulbs are designed fot use with the same voltage. what is the ratio of the resistance of the
1. 3 answers
2. asked by josh
3. 3,100 views
a 1.0 N-weight is hanging at rest as shown. In each case, write in the magnitude of the unknown force.a) chain with a weight of
1. 3 answers
2. asked by Amber
3. 3,084 views
The reaction of aqueous solutions of barium chloride and sodium sulfate results in the formation of a precipitation of barium
1. 1 answer
2. asked by teetee
3. 2,947 views
If one electrode in a galvanic cell is made of zinc (Zn) and one is made of silver (Ag), which metal would be the cathode and
1. 2 answers
2. asked by princess
3. 2,873 views
Calculate the equivalent mass of each of the following acids.a) HC2H3O2 b) KHCO3 c) H2SO3
1. 6 answers
2. asked by HELP PLEASE
3. 2,817 views
If 4.00 g of metal is plated in the voltaic cell (which contains Ag and Ni with the total potential of 2.98 V) , how much metal
1. 1 answer
2. asked by Keisha
3. 2,699 views
The height of a ball t seconds after it is thrown upward from a height of 6 feet and with an initial velocity of 80 feet per
1. 3 answers
2. asked by Angelina
3. 2,677 views
Josh starts his sled at the top of a 2.0 m-high hill that has a constant slope of 25 degrees . After reaching the bottom, he
1. 1 answer
2. asked by kevin
3. 2,590 views
In a production of west side story, eight actors are considered for the male roles of Tony, Riff, and Bernardo.a.) is this
1. 2 answers
2. asked by malik jackson
3. 2,588 views
You're standing 14 feet from the edge of a cylindrical water tank and is 26 feet from the point of tangency. the tank is 10 feet
1. 1 answer
2. asked by anon
3. 2,492 views
A car travels the same distance at constant speed around two curves, one with twice the radius of curvature of the other. For
1. 1 answer
2. asked by Nikki
3. 2,345 views
A 50.0mL volume of AgNO3, solution contains 0.0285 mol AgNO3 (SILVER NITRATE). What is the molarity of the solution?
1. 2 answers
2. asked by jose
3. 2,272 views
Melting Point Determinations1. Melting range of impure vanillin 2. Melting range of recrystalized vanillin 3. Melting range of
1. 3 answers
2. asked by teetee
3. 2,251 views
an ideal monatomic gas is allow to expand slowly until its presssure is reduced to exactly half its original value. By what
1. 1 answer
2. asked by Joanna
3. 2,221 views
A pulsar is a rapidly rotating neutron star that continuously emits a beam of radio waves in a searchlight manner. Each time the
1. 1 answer
2. asked by Will
3. 2,115 views
A positive charge of 1.5x10^-8 C experiences a force of 0.025 N to the left in an electric field. What are the magnitude and
1. 2 answers
2. asked by george
3. 1,985 views
The acceleration of gravity at the surface of the moon is approximately 1/6 that at the surface of the Earth (9.8m/s). What is
1. 1 answer
2. asked by Ashley
3. 1,979 views
Stearic acid, nature's most common fatty acid, dimerizes when dissolved in hexane:2C17H35COOH Picture (C17H35COOH)2; ΔH°rxn =
1. 1 answer
2. asked by lisa
3. 1,908 views
A 55.81 gram irregular object made out of one of the metals in #6 raises the water level in a graduated cylinder from the 17.6
1. 3 answers
2. asked by brandy
3. 1,839 views
If short hair (L) is dominant to long hair (l), then to determine the genotype of a short-haired animal it should be crossed
1. 1 answer
2. asked by carolyn
3. 1,793 views
wich material is the most dense air water plastic or iron
1. 10 answers
2. asked by kayla
3. 1,755 views
A box rests on the back of a truck. The coefficient of static friction between box and bed of the truck is 0.255.(a) When the
1. 2 answers
2. asked by Cynthia
3. 1,708 views
Red light (n = 1.520) and violet light (n = 1.538) traveling in air are incident on a slab of crown glass. Both colors enter the
1. 1 answer
2. asked by DCM
3. 1,624 views
The perimeter of rectangular playground is 200 feet. If the length is 5 feet less than twice the width, what are dimensions of
1. 2 answers
2. asked by lisa
3. 1,617 views
a 60.0-kg person walks from the ground to the roof of a 74.8-m-tall building. how much gravitational potential energy does she
1. 5 answers
2. asked by celeste
3. 1,591 views
an ideal monatomic gas is allow to expand slowly until its pressure is reduce to exactly half its original volume. By what
1. 1 answer
2. asked by joanna
3. 1,583 views
what has stood for almost 2500 years on a hill called acropolis and the people of greece built me to honor the godess athena
1. 2 answers
2. asked by Anonymous
3. 1,559 views
Antifreeze (commonly ethylene glycol or propylene glycol) is usually mixed with water in the radiator of a car. What is its
1. 1 answer
2. asked by teetee
3. 1,557 views
Why was gravity filtration used instead of evaporation to isolate the calcium cabornate?
1. 2 answers
2. asked by Toney
3. 1,555 views
the distance between 2 station A and B is 230 km .two car start simultaneously from A and B in the opposite directions and the
1. 3 answers
2. asked by simon
3. 1,521 views
Asprin(acteyl salicylic acid) can be synthesized by reacting acetic anhydride with salicylic acid. Assume the reaction was run
1. 3 answers
2. asked by teetee
3. 1,521 views
a 0.15 kg ball is thrown into the air & rises to a height of 20.0 m. how much kinetic energy did the ball initially have? ? ?
1. 3 answers
2. asked by hheellpp
3. 1,505 views
Write the expression for Kc and Kp for the reactionPH3BCl3(s) <==> PH3(g) + BCl3(g)
1. 1 answer
2. asked by Lindsay
3. 1,449 views
The Haber process for ammonia synthesis is exothermic:N2(g) + 3H2(g) <==> 2NH3(g) ∆H° = -92 kJ If the equilibrium constant Kc
1. 3 answers
2. asked by Lori
3. 1,446 views
during a molar volume of oxygen experiment indicate how each of the following errors would affect (increase, decrease, or no
1. 1 answer
2. asked by Liz
3. 1,414 views
When you want to pull downward to lift something, the main advantage of passing a rope upward and through a single pulley,rather
1. 1 answer
2. asked by April
3. 1,399 views
A winning basketball shot in the last second of a game is launched with an initial speed of 12.2 m/s, 68 degrees above
1. 0 answers
2. asked by Mariah
3. 1,385 views
dave delivered 52 newspapers in all on saturday and sunday. he delivered 8 more newspapers on sunday than on saturday.how many
1. 3 answers
2. asked by dw
3. 1,379 views
Which of the following statements best describes the recharge zone of an aquifer? Thank you!A) anyplace that the water table of
1. 1 answer
2. asked by Dayana
3. 1,354 views
Ammonium iodide dissociates reversibly to ammonia and hydrogen iodide.NH4I(s) Picture NH3(g) + HI(g) At 400°C, Kp = 0.215.
1. 1 answer
2. asked by lauren
3. 1,340 views
Calculate the pH of each of the following buffered solutions:a. 0.10M C2H5NH2/0.25M C2H5NH3Cl b. 0.25M C2H5NH2/0.50M C2H5NH3Cl
1. 2 answers
2. asked by Alex
3. 1,329 views
I forget, in the heading of a friendly letter, do you write your address or to whom you are writing's address?
1. 6 answers
2. asked by SoccerStar
3. 1,328 views
Suggest reasons why recrystalization from water would probably not be a suitable procedure for purifying the following
1. 1 answer
2. asked by Toney
3. 1,292 views
A high-speed sander has a disk 8.00 cm in radius that rotates about its axis at a constant rate of 1100 revolutions per minute.
1. 2 answers
2. asked by Joe
3. 1,288 views
Sewage at a certain pumping station is raised vertically by 5.27 m at the rate of 1 930 000 liters each day. The sewage, of
1. 0 answers
2. asked by Anonymous
3. 1,268 views
The radius of a ball is approximately 9 inches. Which is the best estimate for the surface area of the ball?
1. 1 answer
2. asked by willy
3. 1,251 views
A CD has a mass of 17.4 g and a radius of 6.01 cm. When inserted into a player, the CD starts from rest and accelerates to an
1. 1 answer
2. asked by Will
3. 1,243 views
a 4 foot post that is 8 feet from a flag pole is casting a shadow whose length is 5 feet? write a proportion that can be used to
1. 0 answers
2. asked by meme
3. 1,163 views
HELP!!!! I don't know how to do the trig identity with this problemcsc^4 x-cot^4x= Csx^2 x + cot^2x
1. 1 answer
2. asked by Quetzally
3. 1,161 views
How far does a rider travel in one turn of each Ferris wheel?This is the first chart Measure Ferris Wheel Diameter (ft) 250
1. 1 answer
2. asked by Samantha
3. 1,144 views
A figure skater is spinning with an initial angular speed of 6.9rad/s. She then pulls her arms in, reducing her moment of
1. 1 answer
2. asked by Jackie
3. 1,123 views
The time required by workers to complete an assembly job has a mean of 50 minutes and a standard deviation of 8 minutes. To spot
1. 1 answer
2. asked by Gift
3. 1,123 views
List at least four distinct advantages of the metric system over "our" measurement system.
1. 0 answers
2. asked by teetee
3. 1,103 views
the probability of an event is 7/10. Find the odds in favor of this event occurring.
1. 1 answer
2. asked by karen
3. 1,094 views
Find dz/dy and dz/dxLet z = ∫e^(sin(t))dt from x to y a = x b = y I tried thinking about it like a chain rule but even then
1. 1 answer
2. asked by Anonymous
3. 1,091 views
Given the data below, calculate the total heat (in J) needed to convert 20.0 g of liquid ethanol (C2H5OH) at 40.0 oC to gaseous
1. 1 answer
2. asked by Alex
3. 1,061 views
Write the standard line notation for each cell below.Mn2+ + 2 e- --> Mn E = -1.18 V Fe3+ + 3 e- --> Fe E = -0.036 V
1. 1 answer
2. asked by Anonymous
3. 1,057 views
vowels: r-controlledriddle read a clud and write the list word. when you have written all seven word, the answer will appear in
1. 4 answers
2. asked by dw
3. 1,046 views
Classify each of the following items as owner's drawing, revenue, or expense.(a) Advertising expense (b) Commission revenue (c)
1. 1 answer
2. asked by Anonymous
3. 1,046 views
THURSDAYMarch 8, 2012 SCHOOL SUBJECTS - Art - Business - Computers - English - Foreign Languages - Health - Home Economics -
1. 0 answers
2. asked by shanon
3. 1,035 views
Jan ate 1/8 of a pizza. Then she ate 1/3 of the pizza. Later she ate 1/4 of it. How much did she eat in all?Thank you!
1. 3 answers
2. asked by paige
3. 1,031 views
If 37 out of 41 people get something right. What percent is that and how do you get the answer? Thank you.
1. 1 answer
2. asked by Mattie
3. 1,017 views
George is making a circle graph of the basketball shots he made during the season. He made 16 foul shots, 29 two-point shots,
1. 5 answers
2. asked by Ashley
3. 995 views
Air America is considering a new policy of booking as many as 400 persons on an airplane that can sear only 350. (Past studies
1. 1 answer
2. asked by Anonymous
3. 977 views
Suppose your bank account will be worth $4,200.00 in one year. The interest rate (discount rate) that the bank pays is 5%. What
1. 0 answers
2. asked by j
3. 958 views
What would happen to a weak base dissociation equilibrium if more products were added?
1. 1 answer
2. asked by princess
3. 945 views
Did the Emperor of Qon's efforts to unite China make him an effective ruler?Is the answer very ineffective or very effectve?
1. 1 answer
2. asked by Emily
3. 931 views
find each missing number.1.)19/n = 0.76 2.)n:20 = 0.55 3.)n = 1:10 (n is a decimal) 4.) n% = 1:100 5.) n% = 33:100 6.) 99% (n is
1. 1 answer
2. asked by HELP HELP HELP
3. 930 views
A bag contains 5 balls,8 white balls, 9 green balls,7 blue balls& 6 yellow balls.A ball is drawn at random .Find the probablity
1. 3 answers
2. asked by Rajit Rastogi
3. 909 views
a 69.3g sample of oxalic ac acid, H2C2O4, was dissolved in 1.000L of solution. How would yo prepare 1.00L of 0.150M H2C2O4 from
1. 1 answer
2. asked by jose
3. 907 views
Find a unit vector U such that the rate of change of f in the direction of U at the given point is maximum.point being (3,5,pi)
1. 2 answers
2. asked by Joe
3. 894 views
The best in this kind are but shadows" isA. Titania talking about men. B. Theseus talking about plays. C. Demetrius talking
1. 1 answer
2. asked by beth
3. 891 views
Electrical conductivity in liquid solutions depends on the presence of free1) neutrons 2) protons 3) molecules 4) ions explain
1. 3 answers
2. asked by Jonathan
3. 885 views
The figure shows a golf ball passing through a windmill at a miniature golf course. The windmill has 8 blades and rotates at an
1. 0 answers
2. asked by Andrew
3. 883 views
Could you please check these sentences?Thank you. 1) Make yourself at home and help yourself to a cup of tea. After waking up it
1. 2 answers
2. asked by Henry
3. 877 views
Patricia owned so many posters that she decided to sell 63 of them to her friends. After selling the posters, she still had 172
1. 1 answer
2. asked by TOM
3. 867 views
an ideal monatomic gas is allow to expand slowly until its pressure is reduced to exactly half its original value. By what
1. 2 answers
2. asked by Joanna
3. 852 views
Hello.I will be very grateful for your help. 1) Is it possible to use "for the present" in the meaning "so far" in the context
1. 1 answer
2. asked by Ilma
3. 850 views
You earned the following scores on five science tests: 75, 82, 90,84, and 71. You want to have an average score of at least 80
1. 1 answer
2. asked by Tyler
3. 849 views
Glenview Community College wants to build a rectangular parking lot on land bordered on one side by a highway. It has 380 feet
1. 1 answer
2. asked by Andrew
3. 849 views
A restaurant offers a 13% discount on chicken wings on Mondays. If Travis eats $7.95 worth of chicken wings on Friday, how much
1. 4 answers
2. asked by Madelyn Santiago
3. 830 views

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