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Questions Asked on October 15, 2013

1. True or False?A model train traveling at a constant speed around a circular track has a constant velocity. (False) 2.Which of
1. 84 answers
2. asked by Elena
3. 17,157 views
An astronaut in a spacesuit has a mass of 100 kilograms. What is theweight of this astronaut on the surface of the Moon where
1. 4 answers
2. asked by unknown
3. 5,067 views
1. Which value is a solution of the equation5 - 4x = -3 0 2 -3 1/4 2. Which ordered pair is a solution of the equation y = x - 4
1. 9 answers
2. asked by Charlotte
3. 4,774 views
A car of mass M = 800kg traveling at 40.0km/hour enters a banked turn covered with ice. The road is banked at an angle θ, and
1. 3 answers
2. asked by Lidia
3. 4,692 views
Calculate the amount of energy in the form of heat that is produced when a volume of 3.56 L of SO2(g) is converted to 3.56 L of
1. 4 answers
2. asked by Anna
3. 3,586 views
1) A rectangle has perimeter 38 feet and an area of 78 square feet. Find the dimensions of the rectangle assuming the width is
1. 1 answer
2. asked by Quince
3. 3,062 views
A sample of a monatomic ideal gas is originally at 20 °C.Calculate its final temperature of the gas if the pressure is doubled
1. 2 answers
2. asked by nbi
3. 3,003 views
Iron pyrite (FeS2) is the form in whichmuch ofthe sulfur exists in coal. In the combustion of coal, oxygen reacts with iron
1. 1 answer
2. asked by Anonymous
3. 2,970 views
Nitroglycerin is a shock-sensitive liquid thatdetonates by the reaction 4C3H5(NO3)3(`) −! 6N2(g) + 10H2O(g) + 12CO2(g) + O2(g)
1. 2 answers
2. asked by Anonymous
3. 2,585 views
Use a power of ten to estimate the product 52.6 x 9
1. 8 answers
2. asked by Cole
3. 2,464 views
For how many values of theta such that 0<theta<360 do we have cos theta = 0.1? (Note that theta is a measure in radians, not
1. 6 answers
2. asked by Sam
3. 2,339 views
A scale model of the Golden Gate Bridge in San Francisco Bay has a main span that is 20 inches long. Ifthe main span of the
1. 4 answers
2. asked by Gayle
3. 2,310 views
An block of mass m , starting from rest, slides down an inclined plane of length L and angle θ with respect to the horizontal.
1. 3 answers
2. asked by Anonymous
3. 2,113 views
The question asks,Consider the following weak acids and their Ka values Acetic acid Ka = 1.8x10^-5 Phosphoric acid Ka =
1. 1 answer
2. asked by Kyle
3. 2,035 views
Imagine that you swing about your head a ball attached to the end of a string. The ball moves at a constant speed in a
1. 1 answer
2. asked by Lidia
3. 2,034 views
The morning temperature was -3 degrees C. By afternoon it had warmed to 8 degrees C. How many degrees had the temperature risen?
1. 3 answers
2. asked by Manuelita
3. 1,893 views
how many sides does a regular polygon have it each exterior angle measures 40 degrees
1. 3 answers
2. asked by jim
3. 1,704 views
Identify the comma rule that the following sentence breaks:Although she loved her parents Sarah was eager to leave for college
1. 3 answers
2. asked by dominique
3. 1,692 views
We drop 17.3 grams of magnesium into435 mL of a 2 M HCl solution. What is the maximum volume of dry hydrogen that could be
1. 1 answer
2. asked by Anonymous
3. 1,662 views
1. The product of 7/16, 4/3, and 1/2 isA. 7/12. (B). 7/24. C. 21/32. D. 2 13/48. 2. The total of 36, 78, 198, 475, and 620 is
1. 3 answers
2. asked by ash
3. 1,647 views
Explain why estimating before you divide 624/6 =helps you place the first digit in the quotient.
1. 8 answers
2. asked by Anonymous
3. 1,604 views
If the strength of gravity is 9.8 newtons per kilogram, that means:a. each newton of force equals 9.8 pounds. b. each pound of
1. 0 answers
2. asked by unknown
3. 1,544 views
Use linear approximation to estimate the amount of paint in cubic centimeters needed to apply a coat of paint 1/100cm thick to a
1. 2 answers
2. asked by Molly
3. 1,454 views
A space station consists of two donut-shaped living chambers, A and B, that have the radii shown in the figure. As the station
1. 1 answer
2. asked by Dreama
3. 1,432 views
The radius of a sphere was measured to be 20cm with a a possible error of 1/5cm1).Use linear approximation to estimate the
1. 1 answer
2. asked by Molly
3. 1,366 views
Triangle ABC is a right triangle. If AB = 3 and AC = 7, find BC. Leave your answer in simplest radical form.
1. 1 answer
2. asked by Rachelle
3. 1,343 views
A small bead of mass m is constrained to move along a frictionless track as shown. The track consists of a semicircular portion
1. 2 answers
2. asked by ss01
3. 1,327 views
A certain gas has a density of 1.053 g/L at 25C and 752 mmHg. What is the molar mass of this gas?
1. 1 answer
2. asked by Chelsea
3. 1,297 views
A solution of ethanol (C2H5OH) is prepared by dissolving 35.0 ml of ethanol in enough water to make 120.0 ml of solution. What
1. 3 answers
2. asked by Chelsea
3. 1,282 views
What does it mean to use compatible numbers to decide where to place the first digit of the quotient?
1. 0 answers
2. asked by Anonymous
3. 1,245 views
A bond that has a $1,000 par value (face value) and a contract or coupon interest rate of 10.6%. The bonds have a current market
1. 0 answers
2. asked by Lisa
3. 1,204 views
What can scientists learn from the rate at which radioactive elements decay?A. a rock's absolute age* B. the relative age of
1. 3 answers
2. asked by Anonymous
3. 1,204 views
Mindy picked 4 times as many daisies as tulips for a flower bouquet.she picked a total of 20 flowers. How many more daisies than
1. 3 answers
2. asked by Pietro
3. 1,193 views
An unknown solution was treated with BaCl2 and a white precipitate formed which did not dissolve in hydrochloric acid. What
1. 2 answers
2. asked by Shines
3. 1,161 views
Jenna is cutting ribbon to make bows. She has two lengths of ribbon, one 24 inches long and one 36 inches long. She wants to cut
1. 3 answers
2. asked by Victoria
3. 1,156 views
During one calendar year, a state trooper issued a total of 375 citations for warnings and speeding tickets. Of these, there
1. 2 answers
2. asked by Anonymous
3. 1,088 views
An oxygen sample has a volume of 5 L at 27�Cand 800 torr. How many oxygen molecules does it contain?
1. 1 answer
2. asked by Anonymous
3. 1,071 views
An block of mass m , starting from rest, slides down an inclined plane of length L and angle θ with respect to the horizontal.
1. 4 answers
2. asked by Anonymous
3. 1,040 views
What can scientists learn from the rate at which radioactive elements decay?A. a rock's absolute age* B. the relative age of
1. 2 answers
2. asked by Anonymous
3. 1,032 views
Consider an ideal spring that has an unstretched length l0 = 3.3 m. Assume the spring has a constant k = 23 N/m. Suppose the
1. 24 answers
2. asked by Tj
3. 1,010 views
A log cabin in the shape of a rectangular prism is modeled using a scale of 1 cm : 0.6 m. If the dimensionsof the model are 34
1. 1 answer
2. asked by Jake
3. 984 views
According to its design specification, the timer circuit delaying the closing of an elevator door is to have a capacitance of
1. 1 answer
2. asked by capacitance q
3. 971 views
write out the balanced equation when Iron(II) sulfate, potassium permanganate, and sulfuric acid react to form Iron (III)
1. 1 answer
2. asked by Jane
3. 966 views
A block is released from the top of a frictionless incline plane as pictured above. If the total distance travelled by the block
1. 2 answers
2. asked by Donna
3. 952 views
H2o2+3i+2h -----> I3+2H2oIn the first 10.0 second of the reaction the concentration of I dropped from 1.000M to 0.868M a)
1. 1 answer
2. asked by niki
3. 940 views
Graph the linear system and estimate the solution. Then check the solution algebraically.7x+y=-17 3x-10y=24 I have to have 4
1. 1 answer
2. asked by Anonymous
3. 932 views
Find the derivative of y=3x-2(4^x)Here is my attempt: Derivative of 3x is 3 Derivative of 2 is 0 derivative of 4^x is 4^x(ln(4))
1. 2 answers
2. asked by Anonymous
3. 907 views
We mix 193 grams of oxygen gas with39 grams of argon gas in a volume of 1140 mL at 37�C. What will be the final pressure of the
1. 2 answers
2. asked by Anonymous
3. 904 views
1.graph equation y=4/5x2.graph linear equation y=-1 3.find the slope of line -2x - 3y = 5 a. slope is b. slope is undefined?
1. 1 answer
2. asked by bridget
3. 885 views
a burro is standing near a cactus. the burro is 59 in. all. his shadow is 4 ft long. the shadow of the cactus is 7 ft long.
1. 4 answers
2. asked by paula jones
3. 876 views
9.Cell phones were first invented in the early 1970s by Martin Cooper, "vice-president" of the Motorola company, and they were
1. 3 answers
2. asked by anonymous
3. 872 views
A spring of negligible mass, spring constant k = 82 N/m, and natural length l = 1.2 m is hanging vertically. This is shown in
1. 3 answers
2. asked by ss01
3. 865 views
a group of people pay $720 admission at an amusement park. Thad adult tickets were $15 and children tickets were $8. there are
1. 3 answers
2. asked by jewels
3. 864 views
When you push down on the handle of a bicycle pump, a pistonin the pump cylinder compresses the air inside the cylinder. When
1. 0 answers
2. asked by Anon
3. 864 views
A cylinder must move a 2000 lb load 2 ft. How much work must it perform?
1. 1 answer
2. asked by Len
3. 859 views
-233 + (-233) = 0 ? is this corect?Thank You
1. 1 answer
2. asked by justin
3. 846 views
A block of mass m = 4 kg slides along a horizontal table when it encounters the free end of a horizontal spring of spring
1. 3 answers
2. asked by ss01
3. 803 views
Define the term international trade. Explain how the balance of international trade works within the economy.I found in my
1. 1 answer
2. asked by Kaliska
3. 800 views
Which of the following is an irrational number?a. negative square root of 5 B. 1/8 c. 0.3858585... d. negative square root of 64
1. 1 answer
2. asked by Katie
3. 793 views
The cafeteria has 144 bananas, 36 pears, and 72 apples. Each student gets the same number of pieces of fruit. What is the
1. 2 answers
2. asked by Aubrey
3. 789 views
The Hotel Ventor has 400 rooms. Currently the hotel is filled. The daily rental is $ 600 per room. For every $6 increase in rent
1. 2 answers
2. asked by Ann
3. 776 views
Write each fraction or mixed number as a decimal.2/8
1. 2 answers
2. asked by Anonymous
3. 769 views
39. Students are cleaning a local park in groups. There are 50 boys & 75 girls. Each group has the same number of boys and the
1. 1 answer
2. asked by Stella
3. 760 views
A 970kg car is at the top of a 38m -long, 2.5 ∘ incline. Its parking brake fails and it starts rolling down the hill. Halfway
1. 2 answers
2. asked by Judith
3. 750 views
FACTOR:36x^2+132xy+121y^2
1. 1 answer
2. asked by Rachet
3. 732 views
A sample of a monatomic ideal gas is originally at 20 °C.Calculate its final temperature of the gas if the pressure is doubled
1. 0 answers
2. asked by Anon
3. 726 views
Solve the system. Then classify the system as consistent and independent, consistent and dependent, or inconsistent.24.) 4x+5y=3
1. 1 answer
2. asked by Anonymous
3. 721 views
If 51.6 mL of ethanol (density = 0.789 g/mL) initially at 6.4°C is mixed with 48.9 mL of water (density = 1.0 g/mL) initially
1. 1 answer
2. asked by MK
3. 715 views
A ball is thrown horizontally from the top ofa building 32.3 m high. The ball strikes the ground at a point 110 m from the base
1. 1 answer
2. asked by Kimberly
3. 714 views
QuestionAn investor puts $15,000 into each of four stocks, labeled A, B, C, and D. The table shown below contains the means and
1. 0 answers
2. asked by Kessy
3. 714 views
A 4.2 g bullet leaves the muzzle of a riﬂe witha speed of 372.4 m/s. What constant force is exerted on the bullet while it is
1. 1 answer
2. asked by Andrew
3. 704 views
During 0.21 s, a wheel rotates through an angle of 2.10 rad as a point on the periphery of the wheel moves with a constant speed
1. 1 answer
2. asked by keb
3. 696 views
When 0.354 g of an unknown nonelectrolyte compound was dissolved in 12.5 g of benzene a solution was formed that froze at 4.46
1. 1 answer
2. asked by Shines
3. 695 views
24. What happens when a solution of nitric acid (HNO3) is added to a solution of potassium hydroxide (KOH)? What are the
1. 2 answers
2. asked by Alexandra
3. 678 views
A rubber ball of mass 43.5 g is dropped from a height of 2.05 m onto a floor. The velocity of the ball is reversed by the
1. 1 answer
2. asked by Anonymous
3. 663 views
Suppose you are given an endless supply of qubit pairs in the state 1/sqrt(2)|00> + e^iphi/sqrt(2)|10>. To estimate the phase
1. 1 answer
2. asked by imath
3. 644 views
I have no idea how to start this problem. I don't want the answer just how to start.A supertanker (mass = 1.70x10^8kg) is moving
1. 1 answer
2. asked by Anji
3. 642 views
A 12100kg railroad car travels alone on a level frictionless track with a constant speed of 15.0m/s . A 6100kg load, initially
1. 0 answers
2. asked by Ivana
3. 641 views
Emission Analysis of Aqueous Solutions of Groups IA and IIA Metal SaltsA student records two potassium emission spectra: 1) one
1. 2 answers
2. asked by Ali
3. 638 views
Write the system as a matrix equation and solve using inverses.x1 + 2x2 - x3 = -3 -2x1 - x2 + 3x3 = 0 -4x1 + 4x2 - x3 = -12 A.
1. 3 answers
2. asked by mdan
3. 638 views
The average temperature in the artic circle is -25degrees Celsius.To the nearest integer, what is the average temperature in the
1. 3 answers
2. asked by Elle
3. 638 views
find the coordinates of the point on the curve xy = 10 in the first quadrant such that the normal line passes through the origin
1. 1 answer
2. asked by Anonymous
3. 637 views
A Silicon Valley company is looking to increase the performance of its workstations. Analysis of the applications that its
1. 0 answers
2. asked by Abu A
3. 635 views
When he had travelled a few yards further he glanced at the card "indifferently". Surprised, he turned it over and looked again
1. 2 answers
2. asked by cici
3. 634 views
I need help on rootwords im stuck on sepect meaning look I have to find 3 words with sepect in it then put the meaning
1. 1 answer
2. asked by katie
3. 627 views
Bella keeps a supply of red, blue, and black pens in a drawer. The drawer has 17 red pens, 18 blue pens, and 11 black pens. If
1. 1 answer
2. asked by mohit
3. 610 views
if m<FGK=3G-4 and m<KGH=2v+7, find w.
1. 1 answer
2. asked by Anonymous
3. 605 views
Please summarize this. I got it from a website and im doing my notecards. Im not trying to plagiarize, Im just not a science
1. 1 answer
2. asked by Losa
3. 604 views
Can someone compare both William Bradford and Thomas Morton's reasons for coming to the new world? thank you.
1. 1 answer
2. asked by JJ
3. 596 views
In the basketball game, Sarah made three times as many 2-point shots as 3-point shots. She made 8 shots in all. How many 2-point
1. 3 answers
2. asked by me
3. 588 views
An air-filled capacitor consists of two parallel plates, each with an area of 7.60 cm2, separated by a distance of 1.70 mm.(a)
1. 0 answers
2. asked by capacitance q
3. 584 views
So i need to calculate the pH of 50ml water (de-ionized) with 1 ml of 1M HCl. So the moles of HCl i think is .001 divided by the
1. 1 answer
2. asked by Kyle
3. 583 views
There are 48 apple slice in the fruit salad that Ben's dad prepared for dinner. The slices were cut from apples that were sliced
1. 1 answer
2. asked by Anonymous
3. 579 views
The transformation of the office of UN secretary-general from “chief clerk” to “international peacemaker” proves thata.
1. 0 answers
2. asked by steven
3. 572 views
How do you factor the difference of the two squares? How do you factor the perfect square trinomial?How do you factor the same
1. 1 answer
2. asked by Sharon
3. 569 views
We release an oil drop of radius r in air. The density of the oil is 640 kg/m3. C1 and C2 for 1 atmosphere air at 20∘ C are
1. 2 answers
2. asked by Help, please!
3. 547 views
Make a tally chart for the number of students in the third-, fourth, and fifth-grade classes: 26, 25, 27, 27, 26, 28, 27.
1. 1 answer
2. asked by Jed
3. 544 views
A salt was completely soluble in water. When this solution was treated with AgNO3 no precipitate was formed. What anions could
1. 1 answer
2. asked by Shines
3. 543 views
A Competition OnstageEver since Lisa auditioned for the musical Annie in the third grade, she had been seriously interested in
1. 5 answers
2. asked by anonymous
3. 542 views
How can you tell before you divide 387 by 4 that the first digit of the quotient is in the tens place?
1. 5 answers
2. asked by Anonymous
3. 540 views

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