Saturday
April 18, 2015

Posts by Anonymous


Total # Posts: 80,344

Physics Dynamics
A sled of mass m = 70.0 kg is being pulled horizontally on a frictionless floor by a force F = 420 N that makes an angle 20.0o above the horizontal. What is the magnitude of the normal force applied by the ground on the sled?
February 12, 2015

Physics Dynamics
A person stands on a bathroom scale in a motionless elevator. When the elevator begins to move, the scale briefly reads only 0.69 of the person's regular weight. Calculate the magnitude of the acceleration of the elevator.
February 12, 2015

Physics Dynamics
A child slides down a slide with a 24o incline, and at the bottom her speed is precisely one-third what it would have been if the slide had been frictionless. Calculate the coefficient of kinetic friction between the slide and the child.
February 12, 2015

Physics Dynamics
An arrow has an initial launch speed of 32 m/s. If it must strike a target 38 m away at the same elevation, what should be the projection angle?
February 12, 2015

Physics Dynamics
Swimming at 2.00 m/s relative to still water, a swimmer heads directly across a river of width 80 m. He arrives 35 m downstream from the point directly across the river from his starting point. (a) What is the speed of the current in the river? (b) At what angle relative to ...
February 12, 2015

Quick english check
Use the house on mango street, "No Speak English" to answer the following questions. Please correct me if I'm wrong. 1. Which of the following best illustrates the conflict between "mamacita" and her husband? A. "He worked two jobs. He came home ...
February 12, 2015

Physics
You are hitting a tennis ball against a wall. The 0.057-kg tennis ball traveling at 29 m/s strikes the wall and rebounds at the same speed. Earth is the object of reference. Determine the ball's change in momentum (magnitude).
February 12, 2015

Physics
An old building is being demolished by swinging a heavy metal ball from a crane. Suppose that such a 85kg ball swings from a 20-m-long wire at speed 10m/s as the wire passes the vertical orientation. What tension force must the wire be able to withstand in order not to break? ...
February 12, 2015

Math
It's not suppoesd to be a fraction!!
February 12, 2015

Math
What did he start with not left with plus he left with 120 dollars and he started with 3?I don't think that is resonable.
February 12, 2015

Math
How much did Aaron start with? Aaron spent 3/7 of his money. He gave ¼ of the remainder to his sister. He had $120 left. How much money did he have in the beginning? Explain how you got your answer. The way you solved this problem was wrong.Aaron did not start out with ...
February 12, 2015

Science
How does the sporophyte generation of a plant differ from the gametophyte generation? Use the words spores, sperm cells, and egg cells in your answer.
February 12, 2015

art
Florida virtual school does not give art text books.
February 12, 2015

art
Ms. Sue not all of us have books that's why we come to this site. Thank you for all your help and all others that take the time to help us. Have a great day.
February 12, 2015

art
Please don't get mad at me. Could it be D?
February 12, 2015

art
What factor might motivate a museum to hastily restore art without considering whether or not the restoration good for the piece? A. a freshly-restored artwork will last longer B. a freshly-restored artwork is easier to display C. a freshly-restored artwork will not spread ...
February 12, 2015

math
I mean 7/28 to 3/7
February 12, 2015

math
120.25 + 7/28
February 12, 2015

art
I completely agree with Ms. Sue. :)
February 12, 2015

art
An archeologist wants to dig up the burial site of a group of ancient Native Americans, to preserve the artifacts in a museum. What is the drawback for Native Americans to preserving these burial artifacts in a museum? A. The artifacts may not be properly preserved by the ...
February 12, 2015

Math
How much did Aaron start with? Aaron spent 3/7 of his money. He gave ¼ of the remainder to his sister. He had $120 left. How much money did he have in the beginning? Explain how you got your answer.
February 12, 2015

Science
Which of the following is true about diabetes? A. The pancreas overproduced glucose, and so insulin must be injected to reduce glucose levels. B. The pancreas underproduced glucose, and so insulin must be injected to increase glucose levels C. The pancreas overproduced insulin...
February 12, 2015

math
How much did Aaron start with? Aaron spent 3/7 of his money. He gave 3 of the remainder to his sister. He had $120 left. How much money did he have in the beginning? Explain how you got your answer.
February 12, 2015

physics
an object is projected with a velocity of 10m/s from the ground level at an angle to the vertically, the total time of flight of projectile os 10secs. calculate angle when (g=10m/s) show workings
February 12, 2015

Art
No problem at all, tell me how it goes ;)
February 12, 2015

Art
Hi Callie! I believe it's C. Just make sure with your textbook like Ms. Sue suggested. :) Hope this helps! ;)
February 12, 2015

math
How much did Aaron start with? Aaron spent 3/7 of his money. He gave 1/4 of the remainder to his sister. He had $120 left. How much money did he have in the beginning? Explain how you got your answer.
February 12, 2015

Math
How much did Aaron start with? Aaron spent 3/7 of his money. He gave ¼ of the remainder to his sister. He had $120 left. How much money did he have in the beginning? Explain how you got your answer.
February 12, 2015

Science
Which of the following is true about diabetes? A. The pancreas overproduced glucose, and so insulin must be injected to reduce glucose levels. B. The pancreas underproduced glucose, and so insulin must be injected to increase glucose levels C. The pancreas overproduced insulin...
February 12, 2015

chem
How many grams of calcium chloride will be produced when 30.0g of calcium carbonate are combined with 14.0g of hydrochloric acid?
February 12, 2015

Chemistry
Given that the initial rate constant is 0.0190s−1 at an initial temperature of 22 ∘C , what would the rate constant be at a temperature of 190 ∘C for the same reaction described in Part A? Activation Energy 32.4kJ/mol
February 12, 2015

Algebra 2
The area of a dining room is 160 square feet. a rectangular rug placed in the center of the room is twice as long as it is wide. If the rug is bordered by feet of hardwood floor on all sides, find the dimensions of the rug.
February 12, 2015

math
If r = 4 cm, h = 18 cm, and a = 7 cm, what is the volume of birdseed that the bird feeder can hold at full capacity?
February 12, 2015

physics
A frictionless incline is 5.00 m long (the distance from the top of the incline to the bottom, measured along the incline). The vertical distance from the top of the incline to the bottom is 4.03 m. A small block is released from rest at the top of the incline and slides down ...
February 12, 2015

S.S
Among the first settlers of the Oregon country, after trappers, were the ____ . A.Missionaries B. Merchants C. Schoolteachers D. farmers I think its A 2.What north american territories did Russia control in the early 1800s? A. California and Nevada B. the territories from ...
February 12, 2015

Geometric progression
The Product of three Consecutive terms of a G.P. is -64 and the first term is four times the third. find the number.
February 12, 2015

Physics
Two identical resistors are connected in parallel across a 26-V battery, which supplies them with a total power of 9.8 W. While the battery is still connected, one of the resistors is heated so that its resistance doubles. The resistance of the other resistor remains unchanged...
February 12, 2015

Chemistry 2
Calculate the molality, molarity, and mole fraction of FeCl3 in a 25.7 mass % aqueous solution (d = 1.204 g/mL).
February 12, 2015

physics
A 14-Ω loudspeaker, a 9.0-Ω loudspeaker, and a 3.2-Ω loudspeaker are connected in parallel across the terminals of an amplifier. Determine the equivalent resistance of the three speakers, assuming that they all behave as resistors. Answer: (1/14)+(1/9)+(1/3.2...
February 12, 2015

math
7^-(1/5) / 7^-(7/5) * 7^3/5 can be simplified as 7^a/b where a and b are positive integers. find a*b-a answer: 7^-(1/5) / 7^-(7/5) * 7^3/5 7^5/7(5/7) * 7 ^3/5 <- plz explain this part? 7^(8/5-3/5)=7*5/5
February 11, 2015

Physics
The rms current in a 41-Ω resistor is 0.69 A. What is the peak value of the voltage across this resistor? Answer: V(rms) = A(ohms)(sqrt2)
February 11, 2015

chem
How many chloride ions are present in 65.5 mL of 0.210 M AlCl3 solution
February 11, 2015

physics
A box of mass 26 kg is hung by a thin string from the ceiling of an elevator. The string can hold up to 276.1 N and will break under larger tension force. How much can the maximum acceleration of the elevator be going upward so that the string does not break and continues to ...
February 11, 2015

Find the domain of the function
Find the domain of the function. f(x)=8+3/x^3
February 11, 2015

rubidoux high school
y+60
February 11, 2015

Algebra
x^1/2 - 7x^1/4 + 12 = 0
February 11, 2015

Science
Are there more hours of daylight in the summer than in the winter
February 11, 2015

Science
What do angiosperms produce in order to protect their seeds?
February 11, 2015

Physics
If the drive chain exerts a force of 2090 N at a radius of 5.00 cm, what is the angular acceleration of the wheel? (b) What is the tangential acceleration of a point on the outer edge of the tire? (c) How long, starting from rest, does it take to reach an angular velocity of ...
February 11, 2015

math
The demand function for a product is p=32−8q where p is the price in dollars when q units are demanded. Find the level of production that maximizes the total revenue and determine the revenue. q= units R= $
February 11, 2015

Chemistry
The freezing point of benzene is 5.5°C. What is the freezing point of a solution of 8.30 g of naphthalene (C10H8) in 320. g of benzene (Kf of benzene = 4.90°C/m)?
February 11, 2015

science
plz help
February 11, 2015

science
describes the movement of an object at rest if no outside forces act on it? a; it will move due to inertia b; gravity will eventually cause it to move c; it will stay at rest due to inertia d; it will stay at rest due to gravity...
February 11, 2015

Math - Answer Check
Write the composition function and then find the value. f(x) = 2x+3 g(x) = x^2 k(x) = square root(x - 4) 1. g(k(x)) g(k(20)) My answer: Function is x - 4, the value is 16. 2. f(g(x)) f(g(2)) My answer: Function is 2x^2 + 3, the value is 11.
February 11, 2015

math
I tries to figure out the answer you give but i just got more confuse.. where it 7^-(1/5)
February 11, 2015

math
what is mean when the question ask find a*b-a ?
February 11, 2015

math
7^5/7(5/7) * 7 ^3/5 <-- I don't understanding this part?
February 11, 2015

math
7^-(1/5) / 7^-(7/5) * 7^3/5 can be simplified as 7^a/b where a and b are positive integers. find a*b-a i'm not good when it come to negative exponent, plz help!
February 11, 2015

government
Who are the top 5 most important members of the Executive Office of the President?
February 11, 2015

Physics
Why does the potential inside a solid conductor not change?
February 11, 2015

Physics
Does the potential inside a hollow conductor change and why?
February 11, 2015

marketing
the first step in taking control of your finances is
February 11, 2015

Geography
new found planet
February 11, 2015

Calc
Find the solution to e^x = 2+2x
February 11, 2015

science
vertical velocityinitial=35sin35 horizoal velocity=35cos35 time in air consider vertical hf=hi+vi*t-1/2 g t^2 0=0+35sin35*t-4.8t^2 solve that with the quadratic equation.. max height is when vv=0 vv=vi*35sin35-gt=0 solve for time at max height, then maxhdight=35sin35*t-1/2 g t^2
February 11, 2015

science
A golf ball leaves the club 35m/s at an teta of 35 degree above the horizontal . Find a) range b) maximum height reached c) time of flight
February 11, 2015

math
The shadow of an electric pole is 5 m. long when thr angle of elevation of the seen is 60 degrees. Find the length of the shadow when the angle of elevation of the seen is 45 degrees
February 11, 2015

math
eddie made a beaded necklace for his mother. every third bead is blue. every seventh bead is green. all the remaining beads are white. there are 20 beads in all. how many beads are blue? green? white?
February 11, 2015

Physics
I dont Know
February 10, 2015

physics
Mary applies a force of 71 N to push a box with an acceleration of 0.57 m/s2. When she increases the pushing force to 83 N, the box's acceleration changes to 0.86 m/s2. There is a constant friction force present between the floor and the box. a) what is the coefficient of ...
February 10, 2015

math
thank you
February 10, 2015

math
amelia made her vegetable garden in the shape of a square. each side is 32 feet long. amelia walked around her garden. how many feer did she walk in all?
February 10, 2015

chemistry
Electrolysis is carried out for 2.00 h in the following cell. The platinum cathode which has a mass of 25.0782 g, weighs 25.8639g after the electrolysis. The platinum anode weighs the same before and after the electrolysis. there is H2SO4(aq) on the anode side and AgNO3(aq) on...
February 10, 2015

Math
u need to say that u haven't completely solved the question , u dont if he's smart or not
February 10, 2015

Math
the question asks , who had the higher balance. u did not answer that
February 10, 2015

Math
ms. sue, u did not answer that question right
February 10, 2015

Math
There are 12 E's among the 100 tiles in Scrabble. What is the probability of selecting all 4 E's when selecting 4 tiles? One answer key says 1/735 while another says 3/23765, but I think it is the second one.
February 10, 2015

Math
(x^6z^-1/3/-125y^-9z^8/3)^-1/3
February 10, 2015

math
I'm in grade 5 and I need help on an area and perimeter question. The area of a rectangle is 300mm and the length of it is 15 mm. I need to find out the width of this rectangle.
February 10, 2015

Math
230 / 14 does not come out even
February 10, 2015

Math
15 * 12 = 180 14(410 - 180) = ? That wont work becuase there is only 410 tangerines.
February 10, 2015

Math
Packaging Tangerines The produce manager at the grocery store had 410 tangerines. He put some of them into 15 cartons containing 12 tangerines each. He then put the rest into 14 cartons, each containing the same number of tangerines. How many tangerines were in each of the 14 ...
February 10, 2015

Math
is that a. or b.
February 10, 2015

Math
Packaging Tangerines The produce manager at the grocery store had 410 tangerines. He put some of them into 15 cartons containing 12 tangerines each. He then put the rest into 14 cartons, each containing the same number of tangerines. How many tangerines were in each of the 14 ...
February 10, 2015

math
what is 2 5/8 - 3 6/8
February 10, 2015

Math
6.5 c=. Fl oz
February 10, 2015

Social studies
Rosalin is preparing to interview for the job described in the ad her resume contains the give facts listed below which should she talk about in the interview as being most relevant to the job
February 10, 2015

probabilitie
Mary and Tom park their cars in an empty parking lot with n>=2 consecutive parking spaces (i.e, n spaces in a row, where only one car fits in each space). Mary and Tom pick parking spaces at random. (All pairs of parking spaces are equally likely.) What is the probability ...
February 10, 2015

Math
c-5 surely you had figured that out on your own...
February 10, 2015

Math
(120-80):80
February 10, 2015

math
(3*39.99 + 3*39.99/2)(0.75)(1.0438) = ?
February 10, 2015

Math
one of the numbers is even. an even multiple of any number is even.
February 10, 2015

physics
You are driving into St. Louis, Missouri, and in the distance you see the famous Gateway-to-the-West arch. This monument rises to a height of 192 m. You estimate your line of sight with the top of the arch to be 7.31 ° above the horizontal. Approximately how far (in ...
February 10, 2015

Math
For an art exhibit, Craig has to choose 3 ceramic mugs out of the 7 that he made over the summer. In how many ways can he arrange these 3 mugs in a row? I'm not looking for the answer, but only an explanation for why this is a permutation problem and not a combination one.
February 10, 2015

english
Its A
February 10, 2015

physics
What is the mass of a man if he accelerates at 42 m/s/s and has a mass of 112 kg?
February 10, 2015

chemistry
I have 120 ml of a 2M NAOH solution. If Ionly use 10 ml the molarity of the 10 ml is stil 2M, correct?
February 10, 2015

Anonymous
input: 1 2 5 10 output: 7 11.5 25 47.5 What is a function rule?
February 10, 2015

math
Nicole is making a bowl of chex mix to serve to her guests .She has already put 45 cups of nuts,410 cups of raisins and 112 cups of chocolate chips in the bowl.If she wants to make 4 cups total ,how much chex cereal will she need to add?
February 10, 2015

statistics
The response to a question has three alternatives: A, B, and C. A sample of 120 responses provides 52 A, 29 B, and 39 C responses. Show the frequency and relative frequency distributions (use nearest whole number for the frequency column and 2 decimal for the relative ...
February 10, 2015

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