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PHYSICS HELPPPP!

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physics
The Earth is 150 million km from the sun. It completes one orbit in a period of approximately 365.25 days. Calculate the orbital speed of Earth in km/hour. please helpppp

math
(x-1)^2 * (x+2)^3 >= 0 helpppp please!

math Please helpppp
evaluate r^2-3 when r=-7

helpppp
how to go from cubic feet to liters .

math
how do you come up with a equation for a line?? helpppp!!!!

NEEDS TO BE TURNED IN IN 5 MINUTES!! HELPPPP
find y' if arctan(xy)=6+(x^4)y

Physics HELPPPP
A speeder traveling at 37 m/s passes a motorcycle policeman at rest at the side of the road. The policeman accelerates at 2.62 m/s2, To the nearest tenth of a second how long does it take the policeman to catch the speeder?

Math please plaese helpppp
how do you solve this system algebraicly a- 2/3b =4 3/5a +b=15

math helpppp !
Solve the equation and check soultion 2(13t-15)+3(t-19)=0

helpppp science 7
what role do insulators play in preventing electric shock?

helpppp science 7
what role do insulators play in preventing electric shock?

HELPPPP
A______ is something a producer can do for a consumer I have no clue please help

physics helpppp!!
The 2nd harmonic of a string of length 40cm and linear mass density 1.11g.m has the same frequency as the 5th resonance mode of a closed pipe of length 1.4m. Find the tension in the string. use 340 for speed of sound

ALGEBRA HELP!!
If today is tuesday, WHAT WILL IT BE IN 300 DAYS? I have no idea where to start HELPPPP

helpppp
Write an equation of the line passing through (3,21)and (-4,-35) in the form of A x + B y = C. Where A, B and C are real numbers

PHYSICS CAN ANYONE HELPPPP PLEASE
A crow sits on a clothesline midway between two poles as shown. Each end of the rope makes an angle of θ = 28° below the horizontal where it connects to the pole. If the combined weight of the crow and the rope is 11.1 N, what is the tension in the rope?

HELPPPP ! -.-
Describe how the principle of superposition was used in determining the relative ages of the cross-sections?

Math helpppp!
Write the quadratic function in standard form and sketech its graph. Identify the vertex. h(x)=(x-6)^2+3

Chem
when 2.31 moles of sulfur hexafluoride are synthesized from te elements, how many grams of fluorine were used PLEASEEEEE HELPPPP MEEE!

Physics. Pleaseee helpppp
Four electrons are located at the corners of a square 10.0nm on a side, with an alpha particle at its midpoint. How much work is needed to move the alpha particle to the midpoint of one of the sides of the square?

PHYSICS HELPPPP!
When a tennis player hits .6kg tennis ball, the racket applies an average force of 250 N to the ball for a time about .15 seconds. Suppsoe that after the colliding, the 1 kg ball was measured to be moving to the left, but onl at 3.25 m/s. What would be the direction and speed ...

Sociology HELPPPP
How does deviance and crime function both for and against society? Be sure to include social control in your answer group.

history
How was Fort William Henry massacre used by the British and the American colonists to justify brutality against the Indians? HELPPPP PLEASE

pre-calc helpppp
Evaluate the expression under the given conditions (show steps please) sin(è/2); tan è = − 5 / 12 , è in Quadrant IV

helpppp
concentrated sulfuric acid has a density of 1.84g/ml. calculate the mass in grams of 1.00 liter of this acid.

algebraa 1 helpppp meee pleaseeee
Find each percent change, and tell whether it is a percent increase or decrease. 7. From 20 to 28

Physics helpppp
250 g ball of putty moving horizontally at 9 m/s collides with and sticks to a block lying on a frictionless horizontal surface. If 20%of the kinetic energy is lost, what is the mass of the block? What i did Mass1 = 0.25 kg Mass 2 =? Kinetic initial = 1/2(0.25)(9)^2 = 10.125 J...

englishhhhhhhhhhhhhh
Graham,Judith. “Happiness is Contagious:New Study Finds.” Chicago Tribune: Health (4 Dec 2008) 16 Dec 2008. <chicagotribune.c o m/features/health/chi-081204happiness,0,6297377.story>. is this correct now helpppp english plzz - Anonymous, Friday, September 30, 2011 at...

english help
Graham,Judith. “Happiness is Contagious:New Study Finds.” Chicago Tribune: Health (4 Dec 2008) 16 Dec 2008. <chicagotribune.c o m/features/health/chi-081204happiness,0,6297377.story>. is this correct now helpppp english plzz - Anonymous, Friday, September 30, 2011 at...

Helpppp
Find the apr to the nearest half percent for the following loan Amount financed $3400 Finance charge $470 Number of monthly payments 36 Please help

helpppp
the fernrod motorcycle company invested 250,000 at 4.5% compounded monthly to be used for the expansion of their manufacturing facilities. how much money will be aviable for the project 3.5 years?

PHYSICS HELPPPP
A loaded ore car has a mass of 880 kg and rolls on rails with negligible friction. It starts from rest and is pulled up a mine shaft by a cable connected to a winch. The shaft is inclined at 28.0° above the horizontal. The car accelerates uniformly to a speed of 2.20 m/s in ...

Physics
A 55.0 kg diver steps off a diving board and drops straight down into the water. The water provides an upward average net force 1320 N. If the diver comes to rest 5.8 m below the water's surface, what is the total distance between the diving board and the diver's stopping ...

MATH HELPPPP!!!!!
If the sum is zero, what is the relationship of the two numbers? (this is an integers question--adding and subtracting-multiplying-and deviding positive and negative numbers)

pre-calc helpppp
Find sin x/2, cos x/2, and tan x/2 from the given information. (show work please) thank you!!! cos x = − 4/5, 180° < x < 270°

Math---helpppp
1)Expand and simplify. Express each equation in standard form. a) f(x) = -2(x-1)(x+4)(x+1)(x-3) b) f(x) = (x+2)(x+1)(x+4) c) f(x) = x(x-6) 2) For each function in question 1. state the degree of the polynomial and identify the type of function

Chemistry....helpppp
Predict Which among the following substances is likely to have a relatively high melting point.(more than one answer may be selected) * P4 * CaCl2 * CCl4 * AlN * CaC2 * None of the above

HELPPPP
A car is driven at a constant speed of 77 km/h down a road. The car's engine delivers 49 kW of power. Calculate the average force that is resisting the motion of the car.

pre-calc helpppp
Simplify the expression by using a Double-Angle Formula or a Half-Angle Formula. ã((1-cos50)/2)

Chemistry Please helpppp
Molecular Orbitals 1.Which of the following diatomic species are paramagnetic and which are diamagnetic? a.C2^2+ b.B2^2- c.Li2^- 2.Arrange the following in order of decreasing stability. a.F2 b.F2^- c.F2+ I know that as you go to higher subshells like from s -p-d-f the energy ...

physics helpppp
Figure 10-35a shows a disk that can rotate about an axis at a radial distance h from the center of the disk. Figure 10-35b gives the rotational inertia I of the disk about the axis as a function of that distance h, from the center out to the edge of the disk. The scale on the ...

SCI. HELPPPP
hi i really really can't find this plz help mee~ Find out the exact rate of movement/increase of distance from New York to Europe THANKS~

chemistry
HELPPPP!!!! A mixture is prepared using equal masses of the two volatile liquids benzene, C6H6, and ethanol, C2H5OH. What is the mole fraction of benzene in this mixture?

Mrs.Sue
mrs sue i have to go soon can u plzzzz helpppp me i just need ou to answer my questions and show ur work so i can print it and make it a study guide plz

MATH HELPPPP
in the diagram below, <G and <H are complementary. What is the measure of G? a)20 b)30 c)40 d)50 inside G they have a problem saying (2x+10)degrees. i relly need help into solving these kind of problems trying to find degrees of each angle but i cant remember the formula...

6th grade science acrostic
Helpppp!!!!!!!!!!I need help on the acrostic. Can you people help? Okay, I need to do an acrostic on photosynthesis, devoured,and extinct.....Thank you if you help.....Rlyyyyyy THANKS

Chemistry helpppp!!!!
How to calculate the ratio of diffusion of Br2 molecules to that CI2 molecules at the same temp. The rate of diffusion is 0.67 So how would I get the ratio??? Steps please and answer! Thank you for your help!!

HELPPPP! ELECTRONICS
When an electron is displaced in a semiconductor, the hole that's left behind is A. incapable of carrying a charge. B. considered an impurity in the crystal. C. attracted to the anode of the voltage source. D. attracted to the negative terminal of the voltage source.

physics helpppp
particle 1 of mass m1 = 0.29 kg slides rightward along an x axis on a frictionless floor with a speed of 1.8 m/s. When it reaches x = 0, it undergoes a one-dimensional elastic collision with stationary particle 2 of mass m2 = 0.40 kg. When particle 2 then reaches a wall at xw...

Chem! Please helpppp!!!!!
Consider the evaporation of methanol at 25.0 c: CH3OH(l)-- CH3OH(g) I figured out that Delta G is 4.3 kJ. Find the Delta G at 25 C under the following conditions: Pressure of CH3OH= 157mmHg, 103mmHg, 14mmHg thanks! please explain

algebra
Please Helpppp!!! Mother having a hard time with radicals. A playground is shaped like a rectangle with a width 5 times its length (l). What is a simplified expression for the distance between opposite corners of the playground? Please can you post step-by-step so I understand...

math
franklin school has 3 boys for every 4 girls in the fifth grade.there is 140 students in the fifth grade. A. how many are boys and how many are girls??? pleassseee helpppp meeeeee!!!!

maath HELPPPP
a ball is thrown into the air at a speed of 96 feet/sec. The equation that expresses the height of the ball as a function of time is: h(t) = -16t2 + 96t + 5 How long does the ball stay in the air after it is thrown? (Round answer to the hundreths of a second)

calculus helpppp!
a 20m ladder rests vertically against the side of a barn. a pig that has been hitched to the ladder starts to pull the base of the ladder away from the wall at a constant rate of 40 cm per second. find the rate of change of the height of the top of the ladder after 30 secs

MATH HELPPPP
3b+7=-2 14+h/5=2 h/5=fraction m/8+4=16 m/8=fraction 3x-1=8 35=3+5x -3+m/3=12 m/3=fraction -x-4=-20 5=-z-3

Computer Science (java1)
can someone please tell me the equation for compshift? double Angle = 45.0; double AngleRadians; double ComptonShift ; //calculations AngleRadians = Math.toRadians(Angle); ComptonShift = Helpppp here

Algebra 2
It takes you 3 hours to mow a lawn & it takes your sister 2 hours to mow the same lawn. How long does it take the two of you to mow 12 lawns if you work together? Whats the answer? Helpppp

Pre-Calc
A large painting in the style of Rubens is 3 feet longer than it is wide. If the wooden frame is 18 in wide and the area of the picture frame is 286 ft^2, find the dimensions of the painting. I have the basic idea down of what I'm supposed to do to solve it.. But I just can't ...

Health 8R help!!!!!!!!!!!!!!!!!!!!!!!!!
Place the letter of the correct reaction (A, B, C, D, or E) A. Speed up brain messages (Stimulants) B. Slow down brain messages (Depressants) C. Block pain messages (Narcotics) D. Scramble or confuse brain messages (Hallucinogens) E. Destroy brain cells (Inhalants) LSD...

chemistry PLEASE HELPPPP
10.0 grams of carbon dioxide and 20.0 grams of oxygen are mixed in a 50.0 L container at 30.0 degrees celcius. What is the pressure of this mixture in mm Hg? I defined my variables. so i had Mass=30.0g Volume=50.0L Temperature=303 Kelvin pressure=x. then i used PV*GFM=mRT. (x...

Physical education URGENT PLEASE HELPPPP
Explain how sprinters use flexibility. Explain how javelin throwers use flexibility. Explain how gymnasts in floor routines use flexibility.

Ms. Sue Helpppp!!
In this unit, you learned about different types of numbers that make up real numbers. Note the different types of numbers and provide two examples of each. Which of the number types is easiest for you to identify? Why? Can you plz Help Ms. Sue?

math
Lareina understands factors, but sometimes she has trouble finding all the factors of a number. What advice would you give to help her find all the factors of a number? Demonstrate by finding all the factors of 110. I NEED HELPPPP!!!!!!!!!!!!!!!!!!!!!!!!!!

math
the average of a set of six integers is 38. when a seventh number is included in the set, the average of the set increase to 47. what is the seventh number? helpppp

***CHEMISTRY HELPPPP!!!!
(b) The density of platinum is 23.4 g/cm3 at 20°C. Calculate the mass of 77.0 cm3 of platinum at this temperature. (c) The density of magnesium is 1.74 g/cm3 at 20°C. What is the volume of 275 g of this metal at this temperature? *what I am stuck on the most is that the ...

help help helpppp--math
1)Use the definitions sin0(theta) = y/r, cos0(theta) = x/r and/or tan0(theta) = y/x to prove that cot0(theta) = 1/tan0(theta) 2)For all 0(theta) prove: a)cos(t) = 1/sec0(theta) b. sec(t) = 1/cos0(theta)

social studys
what was the purpose of the war production board A. to tell factories how many planes or tanks each factory had to produce. B. to help factories shift from making consumer goods to making war materials.****** C. to ship war materials over to the allies D. to create new war ...

Physics Helpppp
Q11 a(ii)A sinusoidal carrier wave has frequency 500 kHz and amplitude 6.0 V. It is to be frequency modulated by a sinusoidal wave of frequency 8 kHz and amplitude 1.5 V. The frequency deviation of the carrier wave is 20 kHz V^–1 Describe, for the carrier wave, the variation...

HELPPPP!!!!
One car traveling at 55mi/h left a certai place 3h later than another car. The second car was traveling in the same direction at 40 mi/h. Inhow many hours ill the faster car ovrtae the other? My work: 55(t-3) = 40t] 55t-165 = 40t -55t -55t -165 = -15t /-15 /-15 11 = t 9 = t-3 ...

ED TECH HELLLLPPP
Selena needs to publish her research about Chinese culture. Her research includes audio clips from an interview with a Chinese citizen, written notes, and photographs from her tour of a Chinese exhibit in a local museum. Based on each application’s strengths and weaknesses, ...

HELPPPP
What is relative humidity? What is Absolute humidity? What is Specific humidity? But can you give me an answer a paragraph long each thanks a lot! Or just answer 1 or 2 of my questions I will take any answer!! P.S- Thank you so much for your help!! Stepanie -- we Jiskha tutors...

health
These could include a wellness center, a health food store, a grocery store that sells wholesome products, a vitamin store, your local gym, your doctor's office, or any other place that offers nutritional advice. Explain why you think they may or may not be giving accurate ...

HELPPPP
A box contains 2 white marbles, 3 blue marbles, 7 black marbles and 9 green marbles. Juan takes one marble at time out of the box and without looking at its color puts it in another box. What is the least number of marbles Juan must transfer to the second box to be certain ...

history
Ok i am having trouble with my world history homework questions........Please HELPPPP!!!!!!!!!!!!!!!!!? Ok these are the three questions i am having trouble with: 1. What are some of te characteristics of the "Renaissance man" and "Renaissance woman"? 2. How did Italy's cities...

Math HELPPPP
(a) Which of the following are examples of the expression "difference of two cubes"? (Select all that apply.) (y2 - 9)3 3 - 4y 64 - y3 (y - 1)3 y3 - 27 27 - 3y y3 (b) Which of the following are examples of the expression "cube of a difference"? (Select all that apply.) 27 - 3y...

Math Helpppp
The College Board, which are administered each year to many thousands of high school students, are scored so as to yield a mean of 550 and a standard deviation of 100. these scores are close to being normally distributed. what percentage of the scores can be expected to ...

Helpppp Math!!!
The market value (in thousands of dollars)of a certain home is a linear function of t, the time in years since 1990. In 1992 the market value was 68 thousand dollars, while in 1997 the market value was 79 thousand dollars -Find the slope of V as a linear function of t. Explain...

Maths Vector Helpppp
The points A and B have position vectors, relative to the origin O, given by −−→OA = i+2j+3k and −−→OB = 2i+j+3k. The line l has vector equation r = (1−2t)i+ (5+t)j+ (2−t)k. (i) Show that l does not intersect the line passing ...

trig help
I need help finding sinA if cosA=(-3/5) and A is greater than 90 degrees, but less than 180 degrees. Draw the quadrant diagram. In the upper left quadrant, greater then ninety degrees, but less than 180, cosine is neg, and sine is positive. Draw a three, four, five right ...

CHEMISTRY HELPPPP!!!!!!!!!
Consider the decomposition of NH3 (g). 2 NH3 (g) → N2 (g) + 3 H2 (g) The reaction is catalyzed on a surface of either tungsten or osmium. The activation energies for the catalyzed and uncatalyzed reactions are given below. W Ea = 163 kJ/mol Os Ea = 197 kJ/mol No catalyst...

chemistry NMR helpppp
really really need some help, been stuck on this for toooo long. Some Data: "A" triplet for 3H (2 neighbors) "B" quartet for 2H (3 neighbors) "C" singlet for 3H (no neighbors) "D" singlet for 2H (no neighbors) Alright here is what i have so far: im trying to figure out what ...

PHYSICSSSSS helpppp please
Two boxes with different masses M1 = 1.8 kg and M2 = 2.6 kg are tied together on a frictionless ramp surface which makes an angle θ = 21° with the horizontal (see the figure below). What is the tension in the rope connecting the two boxes? N What is the tension in the ...

Accounting HELPPPP
Jim Johnson has 40% interest in Richards and Johnson, LLP. The partnership has the following activity for the year: Sales $180,000 Cost of Goods Sold 105,000 Guaranteed Payment to Ron Richards 25,000 Depreciation 11,000 Interest Expense 1,000 Tax-Exempt Income 1,500 Health ...

math helpppp!
can someone please help me set up inequalities based on the info below?: jayanta is working to raise money for the homeless by sending information letters and making follow-up calls to local labor organizations and church gorups. She discovered that each church group requires ...

Chemistry
Unknown Acid: #2 Mass of Unknown solid acid transferred:0.414g Volume of volumetric flask: 100.00 mL Concentration of NaOH: 0.0989 M Aliqot of acid titrated with NaOH: 25.00 mL Average volume of Naoh from titration: 13.9 mL Here's where I need help: No of moles NaOH used: ? ...

Chemistry
Expt #1- Molecular Weight of Unknown Acid Unknown Acid: #2 Mass of Unknown solid acid transferred:0.414g Volume of volumetric flask: 100.00 mL Concentration of NaOH: 0.0989 M Aliqot of acid titrated with NaOH: 25.00 mL Average volume of Naoh from titration: 13.9 mL Here's ...

chemistry
HELPPPP!!!! This is a lab, and i need help with the equations please!! Thank you !! Heat of fusion data table : Mass of foam cup = 3.57g Mass of foam cup + warm water = 104.58g Mass of foam cup + warm water + melted ice = 129.1g Temperature of warm water = 37 degrees celcius. ...

physics
what is physics? i know that its subject but what is definition of physics? The study of matter, energy, space, and time, and the interactions thereof.

physics/medical physics
please assist me to get project topic under biophysics or application of physics in medecine

Physics
Research on the physics of living systems.Give two examples to show how physics

11th grade physics
my physics teacher asked the class to find a cool physics topic and write a summary and a reflection on it 1page.... any ideas im really stuck

Physics
Could someone help me to say this better? I have to Distinguish between atomic physics and nuclear physics, so here is what i have. which deals with the atom as a system of electron(s) and a nucleus and nuclear physics, which considers atomic nuclei alone

Physics;Help!!!!!!
There is apparently no one online who can help with physics questions right now. Please check back later to see if a physics teacher has addressed your question. Multiple posts won't get faster answers. Thanks. =) The question is in the first question marked physics beside ...

physics
thanks for the help earlier just got a question I'm taking AP Physics B this year does that mean next year I would Take AP Physics C??? I don't know if the material in C convers the same material plus the additional calculus material or what??? Could I take AP Calculus while ...

how come no one is helping on physics questions!!!
every physics helpers are not getting any responses. can someone help on physics questions pleases???

physics
just wondering if anybody have any suggestions for a physics project (anything that deals with physics)??? thanks Research the Klien-Fogleman wing and its advantages over conventional wing shapes.

HELPPPP NOOWW !!!!!
Type the pronoun that correctly completes the sentence. Remember that you must spell your answer correctly to receive credit. Yes, the one who designed the house was (she, her). (Points : 1) Question 2. 2. Type the pronoun that correctly completes the sentence. Remember that ...

college physics
This site is just a front for liveperson Most college physics questions are not answered for months if ever. Out of "200 experts" you must have somebody who knows physics right? Guess not.

Sta 112
This is my question every one . Please help me have it already I had 6 as my answer. In a class of 50 student 28,22,20 of them offer physics,chemistry and biology respectively also 4 of them offer physics and chemistry but not biology,3 offer physics and biology but not ...

Physics and movies
we are supposed to relate physics to movies, and state mistakes or errors found in the movies based on physics principles. I am trying to do Willy Wonka the 1971 version...I need help trying to prove that Violets becoming a blueberry is impossible and an error due to physics, ...

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