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2008
April
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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.
2 answers
asked by
Will
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?
5 answers
asked by
tony
6,064 views
Two ice skaters have masses m1 and m2 and are initially stationary. Their skates are identical. They push against one another,
2 answers
asked by
Will
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
3 answers
asked by
Becky
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
4 answers
asked by
natash
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.
6 answers
asked by
Monica
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:
3 answers
asked by
Jessica
2,916 views
Hydrogren, a possible future fuel, can also be obtained from other compounds such as ethanol. Ethanol can be made from the
2 answers
asked by
Kate
2,856 views
please check my answer thanks
A dog's ability to smell can be disturbed by problems with the A. ears B. teeth C eyes D tongue I
5 answers
asked by
sarjh
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,
3 answers
asked by
Nathaniel
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
2 answers
asked by
Aaron McQuady
2,269 views
what approach do you suggest using to prevent your water sample from cooling off beore you start your measurements?
3 answers
asked by
natash
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
2 answers
asked by
Danielle
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 answer
asked by
Jennifer
2,037 views
If the stockroom fails to dry the KHP to remove the waters of hydration, the student's calculated concentration
for the
2 answers
asked by
Confused
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 =
2 answers
asked by
Will
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 answer
asked by
Jennifer
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
2 answers
asked by
Kelly
1,823 views
how did the spanish conquest affect native americans and africans?
5 answers
asked by
sara
1,819 views
how does the total energy change when a falling rock hits the ground?
2 answers
asked by
nick
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
4 answers
asked by
Cat
1,595 views
When graphing motion the steepness of the slope depends on what
1 answer
asked by
lorelei
1,510 views
Assuming that the conditions of the Hardy-Weinberg equilibrium are met, determine the genotype and phenotype frequencies in the
1 answer
asked by
cat
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
2 answers
asked by
Anonymous
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
2 answers
asked by
Kelly
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 answer
asked by
Nikki
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 answer
asked by
Will
1,317 views
A picture frame is 20cm x 16cm. There is 192cm squared of picture showing. Find the width of the frame.
2 answers
asked by
Clara
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 answer
asked by
Will
1,211 views
will teacher reforms (such as comprehensive testing of teachers or requiring ongoing professional development) attract or
3 answers
asked by
Dawn
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 answer
asked by
Anonymous
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
2 answers
asked by
Christian
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 answer
asked by
Jon
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 answer
asked by
Karen
1,068 views
Please help revise.
Today most nations in particular those in the Western hemisphere do not consider Cuba to be a democracy.
3 answers
asked by
Crystal
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
4 answers
asked by
Dawn
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
0 answers
asked by
Jon
1,030 views
Identifying antecedents
11a. The antecedent in the following sentence is Doctors: Doctors should schedule more time for patients
1 answer
asked by
Rose
992 views
Using the correct form of be and have in the present tense
7a. I was interested in working on the presidential campaign if the
1 answer
asked by
Rose
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 answer
asked by
Will
981 views
Pronoun case for who and whom
21a. Who was the star of last year’s award-winning movie? 21b. Whom was the star of last year’s
2 answers
asked by
Rose
957 views
How do you correct this sentence: In September me and him gots to start going to middle school.
4 answers
asked by
Andy
946 views
what were the independent and dependent variables used in "discovering love" study by Harlow?
1 answer
asked by
katelyn
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 answer
asked by
Kate
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
0 answers
asked by
Will
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
2 answers
asked by
Cupcake
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 answer
asked by
Will
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 answer
asked by
Casey
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 answer
asked by
Cupcake
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 answer
asked by
Jon
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
2 answers
asked by
Ginger
763 views
When graphing motion the steepness of the slope depends on
1 answer
asked by
anony
760 views
how to conjugate hablar in past tense
1 answer
asked by
m
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
3 answers
asked by
Aaron
748 views
Explain the Correctional Officer subculture. How
does this subculture create ethical issues for correctional officers?
1 answer
asked by
Becky
739 views
I would also like to see Nathaniels work solved:P I have a similar question
If 1.00 mol each of carbon dioxide and hydrogen is
7 answers
asked by
Jessica
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
6 answers
asked by
Jessica
731 views
A population shows 81% have the dominant phenotype. If Hardy-Weinberg conditions are met, what will be the genotypic frequencies
1 answer
asked by
rod
728 views
can you give examples of acids and alkalis plz?
1 answer
asked by
ellz
724 views
Please check my answer thanks
Because dogs are pac animals, they prefer to eat A. Alone B. In the evening C. at dawn D. with
2 answers
asked by
sarjh
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
0 answers
asked by
Lori
697 views
Horizontal asymptote for f(x)=10x/5x^2+1
2 answers
asked by
Pam
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
0 answers
asked by
Malisa
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
2 answers
asked by
Casey
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?
0 answers
asked by
Jon
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
6 answers
asked by
Casey
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
0 answers
asked by
Ginger
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
2 answers
asked by
Nat
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 answer
asked by
LC
666 views
Pronoun-antecedent agreement with indefinite pronouns
16a. Anyone who requests a copy of the game may have it for their video
4 answers
asked by
Rose
657 views
Please help revise, thanks
In this paper I will argue that although Cuba is a communist country it has some democratic
3 answers
asked by
Crystal
644 views
please check my answer thanks
I need to write at least one paragraph regaurding this Urinalysis is a very commo diagnostic test.
3 answers
asked by
Anonymous
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 &
2 answers
asked by
G
643 views
i have a problem in dis sum from complex numbers
prove that (1+sinA+icosA)/(1-sinA-icosA)=i(secA+tanA)
1 answer
asked by
sonia
642 views
please help revise
The distribution of power is well represented at the National Assembly, the highest organ of government.
4 answers
asked by
Crystal
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
0 answers
asked by
Jon
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 answer
asked by
FCH
629 views
4ft 9in=____in
8yd 1 ft=____in 6yd 2ft=____in please help!!!!!!
3 answers
asked by
Gintare
629 views
Verb form and verb tense
9a. The ancient Egyptians built pyramids as burial sites for their leaders. 9b. The ancient Egyptians
1 answer
asked by
Rose
626 views
Using regular and irregular verbs
6a. I lay my book on the table, but now I cannot find it. 6b. I laid my book on the table, but
2 answers
asked by
Rose
621 views
I need help with OR rhymers and I need help
1 answer
asked by
Karen
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.
4 answers
asked by
Jon
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 answer
asked by
natash
595 views
Pronoun-antecedent agreement with indefinite pronouns
17a. Each of the applicants must submit his or her completed form to the
1 answer
asked by
Rose
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 answer
asked by
Confused
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 answer
asked by
Jessica
583 views
Verb form and verb tense
8a. Since American Idol premiered on television, many talented contestants have appeared on the show.
2 answers
asked by
Rose
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 answer
asked by
Joy
576 views
Why does the inequality sign change when both sides are multiplied or divided by a negative number?
2 answers
asked by
Anonymous
574 views
Can you give me like a little fact file in a timeline about the world war 1?
thanks :)
5 answers
asked by
Regina! :) please help
568 views
how to say 6:00am in italian
2 answers
asked by
lissa
560 views
Identify internal and/or external rewards that impact recruitment and retention of quality teachers. How do such rewards
1 answer
asked by
Dawn
559 views
Subject-verb agreement
3a. Vitamins that are sold in a health-food store are not regulated by the Food and Drug Administration.
2 answers
asked by
Rose
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 answer
asked by
Larry
546 views
Pronoun-antecedent agreement with indefinite pronouns
15a. Neither the mayor nor the council members have filed their reports.
1 answer
asked by
Rose
544 views
Identifying antecedents
10a. The antecedent in the following sentence is students: Students in online classes have to be
1 answer
asked by
Rose
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
0 answers
asked by
Jon
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 answer
asked by
Will
533 views
Vague pronouns
24a. When the car hit a tree, it made a terrible noise. 24b. The car made a terrible noise as it crashed into a
1 answer
asked by
Rose
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 answer
asked by
G
528 views
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