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2008
April

Questions Asked on April 1, 2008

An 85 kg jogger is heading due east at a speed of 1.7 m/s. A 55 kg jogger is heading 40° north of east at a speed of 3.4 m/s.
1. 2 answers
2. asked by Will
3. 6,404 views
if you shook the end of a rope up and down three times each second, what would be the period of the waves set up in the rope?
1. 5 answers
2. asked by tony
3. 6,064 views
Two ice skaters have masses m1 and m2 and are initially stationary. Their skates are identical. They push against one another,
1. 2 answers
2. asked by Will
3. 5,512 views
A 3.0-uF capacitor and a 4.0-uF capacitor are connected in series across a 40.0-V battery. A 10.0-uF capacitor is also connected
1. 3 answers
2. asked by Becky
3. 3,665 views
If a 5.26-g sample of copper at 258C is placed in 125mL of water at 21.0C, how hot will the water get? Assume no heat loss to
1. 4 answers
2. asked by natash
3. 3,068 views
An airplane traveling at 9.50 102 km/h passes over a region where Earth's magnetic field is 4.4 10-5 T and is nearly vertical.
1. 6 answers
2. asked by Monica
3. 3,039 views
Calculate the solubility of iron(II) carbonate at 25 degrees Celsius. The Ksp of FeCO3(s) is 3.5 x 10^-11 at 25 degrees Celsius:
1. 3 answers
2. asked by Jessica
3. 2,916 views
Hydrogren, a possible future fuel, can also be obtained from other compounds such as ethanol. Ethanol can be made from the
1. 2 answers
2. asked by Kate
3. 2,856 views
please check my answer thanksA dog's ability to smell can be disturbed by problems with the A. ears B. teeth C eyes D tongue I
1. 5 answers
2. asked by sarjh
3. 2,703 views
If 1.00 mol each of carbon dioxide and hydrogen is initially injected into a 10.0-L reaction chamber at 986 degrees Celsius,
1. 3 answers
2. asked by Nathaniel
3. 2,343 views
A rectangle and a triangle have equal areas. The length of the rectangle is 12 inches, and its width is 8 inches. If the base of
1. 2 answers
2. asked by Aaron McQuady
3. 2,269 views
what approach do you suggest using to prevent your water sample from cooling off beore you start your measurements?
1. 3 answers
2. asked by natash
3. 2,106 views
I need help with this questions.a). An overhead garage door has two springs, one on each side of the door. A force of 15 pounds
1. 2 answers
2. asked by Danielle
3. 2,066 views
In a saturated solution of Al(OH)3 the concentration of OH^1- is 2.6 x 10^5 mol/L. The concentration of Al3+ in mol/L is what?
1. 1 answer
2. asked by Jennifer
3. 2,037 views
If the stockroom fails to dry the KHP to remove the waters of hydration, the student's calculated concentrationfor the
1. 2 answers
2. asked by Confused
3. 2,017 views
ssm By accident, a large plate is dropped and breaks into three pieces. The pieces fly apart parallel to the floor, with v1 =
1. 2 answers
2. asked by Will
3. 1,980 views
If the equilibrium constant for the conversion of isobutane to n-butane is 2.5 what is the value of the equilibrium constant for
1. 1 answer
2. asked by Jennifer
3. 1,919 views
An ionized helium atom has a mass of 6.6*10^-27kg and a speed of 4.4*10^5 m/s. The atom moves perpendicular to a 0.75-T magnetic
1. 2 answers
2. asked by Kelly
3. 1,823 views
how did the spanish conquest affect native americans and africans?
1. 5 answers
2. asked by sara
3. 1,819 views
how does the total energy change when a falling rock hits the ground?
1. 2 answers
2. asked by nick
3. 1,647 views
A 12 foot ladder is leaning against a house. If the top of the ladder reaches 8 feet up the house, how far is the bottom of the
1. 4 answers
2. asked by Cat
3. 1,595 views
When graphing motion the steepness of the slope depends on what
1. 1 answer
2. asked by lorelei
3. 1,510 views
Assuming that the conditions of the Hardy-Weinberg equilibrium are met, determine the genotype and phenotype frequencies in the
1. 1 answer
2. asked by cat
3. 1,428 views
At 25 degrees celsius and 1.0 atm, 0.25g of a gas dissolves in 1.00L of water. What mass of the gas dissolves in 1.00 L of water
1. 2 answers
2. asked by Anonymous
3. 1,417 views
An electron is moving through a magnetic field whose magnitude is 8.70*10^-4 T. The electron experiences only a magnetic force
1. 2 answers
2. asked by Kelly
3. 1,401 views
A circle is circumscribed by a pentagon. The sides are all tangent to the circle. (It's a bit hard to explain without a picture,
1. 1 answer
2. asked by Nikki
3. 1,393 views
A mine car (mass 380 kg) rolls at a speed of 0.5 m/s on a horizontal track, as the drawing shows. A 150 kg chunk of coal has a
1. 1 answer
2. asked by Will
3. 1,317 views
A picture frame is 20cm x 16cm. There is 192cm squared of picture showing. Find the width of the frame.
1. 2 answers
2. asked by Clara
3. 1,231 views
Baseball player A bunts the ball by hitting it in such a way that it acquires an initial velocity of 1 m/s parallel to the
1. 1 answer
2. asked by Will
3. 1,211 views
will teacher reforms (such as comprehensive testing of teachers or requiring ongoing professional development) attract or
1. 3 answers
2. asked by Dawn
3. 1,193 views
A baseball diamond is a square with sides of 90 ft. long.a) to the nearest foot, what is the length of a throw from home to
1. 1 answer
2. asked by Anonymous
3. 1,177 views
I am going to take an Accuplacer math placement test later this week. It is to determine what math course I need to take in
1. 2 answers
2. asked by Christian
3. 1,143 views
An elevator is moving up with an acceleration of 3.36 m/s^2. What would be the apparent weight of a 64.2 kg man in the elevator?
1. 1 answer
2. asked by Jon
3. 1,137 views
If you purchase property and contract a company to construct a building. How would you enter the transaction? I know you would
1. 1 answer
2. asked by Karen
3. 1,068 views
Please help revise.Today most nations in particular those in the Western hemisphere do not consider Cuba to be a democracy.
1. 3 answers
2. asked by Crystal
3. 1,035 views
Hi, okay um. I'm trying to get his math question (Algebra :o) and i'm not quite sure what i'm doing---but everything i do, i get
1. 4 answers
2. asked by Dawn
3. 1,034 views
4)A bug is moving east at 1 m/s. A semi-truck is moving west at 45 m/s. They collide and the bug is splattered across the
1. 0 answers
2. asked by Jon
3. 1,030 views
Identifying antecedents11a. The antecedent in the following sentence is Doctors: Doctors should schedule more time for patients
1. 1 answer
2. asked by Rose
3. 992 views
Using the correct form of be and have in the present tense7a. I was interested in working on the presidential campaign if the
1. 1 answer
2. asked by Rose
3. 988 views
Concept Simulation 3.2 reviews the concepts that are important in this problem.A golfer imparts a speed of 32.9 m/s to a ball,
1. 1 answer
2. asked by Will
3. 981 views
Pronoun case for who and whom21a. Who was the star of last year’s award-winning movie? 21b. Whom was the star of last year’s
1. 2 answers
2. asked by Rose
3. 957 views
How do you correct this sentence: In September me and him gots to start going to middle school.
1. 4 answers
2. asked by Andy
3. 946 views
what were the independent and dependent variables used in "discovering love" study by Harlow?
1. 1 answer
2. asked by katelyn
3. 937 views
The rock in a lead ore deposit contains 84% PbS by mass. How many kilograms of the rock must be processed to obtain 1.0 kg of
1. 1 answer
2. asked by Kate
3. 922 views
A 2.50 g bullet, traveling at a speed of 435 m/s, strikes the wooden block of a ballistic pendulum, as shown. The block has a
1. 0 answers
2. asked by Will
3. 876 views
I do not understand implicit differentiation. One of the problems are: find y' by implicit differentiation xy+2x+3x^2=4.I would
1. 2 answers
2. asked by Cupcake
3. 810 views
A car (mass = 1150 kg) is traveling at 32 m/s when it collides head-on with a sport utility vehicle (mass = 2550 kg) traveling
1. 1 answer
2. asked by Will
3. 807 views
Suppose a triangle has angles A,B, and C. Angle C is the right angle. Find the measures of the other sides to the nearest whole
1. 1 answer
2. asked by Casey
3. 802 views
I do not understand implicit differentiation. One of the problems are: find y' by implicit differentiation xy+2x+3x^2=4.I would
1. 1 answer
2. asked by Cupcake
3. 797 views
16)You are pushing a 55N lawnmower across the yard. Its handle makes a 55 degree angle with the ground. What force are you
1. 1 answer
2. asked by Jon
3. 790 views
For the evaporation of water during perspiration on a hot, dry, day,a)DH > 0 and TDS = DH. b)DH > 0 and TDS > DH. c)DH > 0 and
1. 2 answers
2. asked by Ginger
3. 763 views
When graphing motion the steepness of the slope depends on
1. 1 answer
2. asked by anony
3. 760 views
how to conjugate hablar in past tense
1. 1 answer
2. asked by m
3. 757 views
A man drives x miles the first day, y miles the second day, and z miles the third day. The average mileage covered per day is
1. 3 answers
2. asked by Aaron
3. 748 views
Explain the Correctional Officer subculture. Howdoes this subculture create ethical issues for correctional officers?
1. 1 answer
2. asked by Becky
3. 739 views
I would also like to see Nathaniels work solved:P I have a similar questionIf 1.00 mol each of carbon dioxide and hydrogen is
1. 7 answers
2. asked by Jessica
3. 737 views
Hi Cna someone please tell me what I must out into the Trial 1 column? It would be greatly appreciated.theLab: Determining the
1. 6 answers
2. asked by Jessica
3. 731 views
A population shows 81% have the dominant phenotype. If Hardy-Weinberg conditions are met, what will be the genotypic frequencies
1. 1 answer
2. asked by rod
3. 728 views
can you give examples of acids and alkalis plz?
1. 1 answer
2. asked by ellz
3. 724 views
Please check my answer thanksBecause dogs are pac animals, they prefer to eat A. Alone B. In the evening C. at dawn D. with
1. 2 answers
2. asked by sarjh
3. 704 views
I am trying to find an example of how to write a prediction for a Biology Lab Report. I think a prediction should be written as
1. 0 answers
2. asked by Lori
3. 697 views
Horizontal asymptote for f(x)=10x/5x^2+1
1. 2 answers
2. asked by Pam
3. 691 views
A wire of length 0.655m carries a current of 21.0A. In the presence of a 0.470-T magnetic field, the wire experiences a force of
1. 0 answers
2. asked by Malisa
3. 690 views
I have two problems that I am not sure about how to work out.1. The distance traveled by a falling object is given by the
1. 2 answers
2. asked by Casey
3. 689 views
An elevator is moving up with an acceleration of 3.36 m/s^2. What would be the apparent weight of a 64.2 kg man in the elevator?
1. 0 answers
2. asked by Jon
3. 689 views
A rectangle has a width of 2(square root of 5)and an area of 50 cm^2. Find the length of the rectangle. Does anyone know how to
1. 6 answers
2. asked by Casey
3. 682 views
For the evaporation of water during perspiration on a hot, dry, day,a)DH > 0 and TDS = DH. b) DH > 0 and TDS > DH. c) DH > 0 and
1. 0 answers
2. asked by Ginger
3. 674 views
I am doing an assignment on fire ants for Geography. I need a map showing the current location of the ants in Australia and a
1. 2 answers
2. asked by Nat
3. 670 views
We did a DNA extraction lab of a banana. I was wondering, what exactly is the purpose of using mushed bananas, and how was water
1. 1 answer
2. asked by LC
3. 666 views
Pronoun-antecedent agreement with indefinite pronouns16a. Anyone who requests a copy of the game may have it for their video
1. 4 answers
2. asked by Rose
3. 657 views
Please help revise, thanksIn this paper I will argue that although Cuba is a communist country it has some democratic
1. 3 answers
2. asked by Crystal
3. 644 views
please check my answer thanksI need to write at least one paragraph regaurding this Urinalysis is a very commo diagnostic test.
1. 3 answers
2. asked by Anonymous
3. 643 views
I am solving for sytems of equations using the elimination method. Book says answers are 0,-1. I have tried solving for both x &
1. 2 answers
2. asked by G
3. 643 views
i have a problem in dis sum from complex numbersprove that (1+sinA+icosA)/(1-sinA-icosA)=i(secA+tanA)
1. 1 answer
2. asked by sonia
3. 642 views
please help reviseThe distribution of power is well represented at the National Assembly, the highest organ of government.
1. 4 answers
2. asked by Crystal
3. 639 views
16)You are pushing a 55N lawnmower across the yard. Its handle makes a 55 degree angle with the ground. What force are you
1. 0 answers
2. asked by Jon
3. 636 views
I have two problems that I am not sure about how to work out.1. The distance traveled by a falling object is given by the
1. 1 answer
2. asked by FCH
3. 629 views
4ft 9in=____in8yd 1 ft=____in 6yd 2ft=____in please help!!!!!!
1. 3 answers
2. asked by Gintare
3. 629 views
Verb form and verb tense9a. The ancient Egyptians built pyramids as burial sites for their leaders. 9b. The ancient Egyptians
1. 1 answer
2. asked by Rose
3. 626 views
Using regular and irregular verbs6a. I lay my book on the table, but now I cannot find it. 6b. I laid my book on the table, but
1. 2 answers
2. asked by Rose
3. 621 views
I need help with OR rhymers and I need help
1. 1 answer
2. asked by Karen
3. 612 views
14)The cable of the elevator you are riding in breaks and the elevator begins to freefall at terminal velocity to the ground.
1. 4 answers
2. asked by Jon
3. 608 views
If the warm water in this experiment (Im not quite sure if you need more information) is at 98C, how much heat must be relesed
1. 1 answer
2. asked by natash
3. 595 views
Pronoun-antecedent agreement with indefinite pronouns17a. Each of the applicants must submit his or her completed form to the
1. 1 answer
2. asked by Rose
3. 591 views
Three samples of an unknown acid are titrated with 0.4901 M NaOH. The average equivalent weight of the acid using the data below
1. 1 answer
2. asked by Confused
3. 587 views
Hi DrBob thank tou for your help so far its really inspiring I must say:)I have another question though:P Use the table to
1. 1 answer
2. asked by Jessica
3. 583 views
Verb form and verb tense8a. Since American Idol premiered on television, many talented contestants have appeared on the show.
1. 2 answers
2. asked by Rose
3. 579 views
In 2002 the rate for a first class U.S. postage stamp increased to $0.37. This represent a $0.34 increase since 1917. What is
1. 1 answer
2. asked by Joy
3. 576 views
Why does the inequality sign change when both sides are multiplied or divided by a negative number?
1. 2 answers
2. asked by Anonymous
3. 574 views
Can you give me like a little fact file in a timeline about the world war 1?thanks :)
1. 5 answers
2. asked by Regina! :) please help
3. 568 views
how to say 6:00am in italian
1. 2 answers
2. asked by lissa
3. 560 views
Identify internal and/or external rewards that impact recruitment and retention of quality teachers. How do such rewards
1. 1 answer
2. asked by Dawn
3. 559 views
Subject-verb agreement3a. Vitamins that are sold in a health-food store are not regulated by the Food and Drug Administration.
1. 2 answers
2. asked by Rose
3. 554 views
A recipe calls for 2/3 cups of green peppers. What would it be if you wanted to make half of the recipe?
1. 1 answer
2. asked by Larry
3. 546 views
Pronoun-antecedent agreement with indefinite pronouns15a. Neither the mayor nor the council members have filed their reports.
1. 1 answer
2. asked by Rose
3. 544 views
Identifying antecedents10a. The antecedent in the following sentence is students: Students in online classes have to be
1. 1 answer
2. asked by Rose
3. 539 views
4)A bug is moving east at 1 m/s. A semi-truck is moving west at 45 m/s. They collide and the bug is splattered across the
1. 0 answers
2. asked by Jon
3. 535 views
Suppose the water near the top of Niagara Falls has a horizontal speed of 2.3 m/s just before it cascades over the edge of the
1. 1 answer
2. asked by Will
3. 533 views
Vague pronouns24a. When the car hit a tree, it made a terrible noise. 24b. The car made a terrible noise as it crashed into a
1. 1 answer
2. asked by Rose
3. 531 views
Solving for the sytems of equiation using the elimination method.Book gives answers 3,2. I have tried using all the numbers to
1. 1 answer
2. asked by G
3. 528 views

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