Friday
December 9, 2016

Homework Help: Science

Branches of Science

Recent Science Questions

science
how Avogadros hypothesis applied to show molecular mass of volatile substances is twice of Vapour density?
Saturday, September 10, 2016 by rina

Science
A convex mirror forms an image of half the size of the object. When it is moved 15cm away from the object the size of the image becomes 2/5times that of the object. Find the focal length of mirror
Saturday, September 10, 2016 by Aashutosh

Science
water is flowing through a horizontal pipe of varying cross section at any two places the diameters of the tube are 4cm and 2cm if the pressure difference between these two places be equal to 4.5cm then determine the rate of flow of water in the tube
Saturday, September 10, 2016 by Tanya

Science
Draw a circuit diagram of a containing two cells in series, a closed switch, three identical light bulbs in parallel.
Saturday, September 10, 2016 by Pholelwa

Science
Draw a circuit diagram of a circuit containing two cells in series, a closed switch,three identical light bulbs in parallel
Saturday, September 10, 2016 by Pholelwa

Science
1. A study was done to find if different tire treads affect the braking distance of an Army Jeep. The same road surface was used each time. Independent variable: Tire Treads Dependent Variable: Braking Distance 2. An experiment was performed to determine how the amount of ...
Friday, September 9, 2016 by Plz check my answers!

Science
How much mL of dilute nitric acid is needed to add in control solution in chloride limit test in sodium hydroxide sample???can u please give me Answer urgently??
Friday, September 9, 2016 by Palakpatel

Science
How much mL of dilute nitric acid is needed to add in control solution in chloride limit test in sodium hydroxide sample according to japanese pharmacopia??can u please give me Answer
Friday, September 9, 2016 by Palakpatel

science
What is , a quarter after four in digital form.
Friday, September 9, 2016 by Connie

Science
One:the sI unit measure for length the meter-would be most appropriate when Two:The metric System Of measurement is based on the number Three: Scientists use SI because it allows them to compare data and communicate with each other about their results (true/False ~Mia
Friday, September 9, 2016 by Mia

Science
A body is moving with uniform accelaration goes 65 meter 5th second and 105 meter in 9th second. How far will it go in 20th seco d
Friday, September 9, 2016 by kabak tamo

NAVL Science (help)
The USS Ronald Regan's (CVN 76) barometer reads 30.14 in-hg. A vacuum gage at the port main condenser reads 18.25 in-Hg. What is the pressure relationship for this gage? What is the absolute pressure, in Psia, for the port main condensor?
Thursday, September 8, 2016 by Ashley

science
lighting is actually an enormous display of the concept of?
Thursday, September 8, 2016 by nisha

Science
in science, skepticism means coming up with inventive way to solve a problems or produce new things
Thursday, September 8, 2016 by Mia

science
1. a stream of water will bend toward a balloon that has been rubbed on a sweater to generate static charge. Which property of water is responsible for this behavior? A. THE polarity of the water molecule b. the ability of water to form hydrogen bonds with itself c. the heat ...
Thursday, September 8, 2016 by oto

Science
When a person wearing a perfume enters a room it takes a minute to spread in the room..what causes that??
Thursday, September 8, 2016 by Zola

Science
A mixture of iron nail , salt ,oil and water is provided to you give step wise method to separate each component from this mixture
Thursday, September 8, 2016 by Jiya

Science
Plz HELP me !!!!! I need to know a acrostic poem about safety plz help me it is due tomorrow
Wednesday, September 7, 2016 by Maddie

Science
A species with two colour variation one mostly green and one is brown.How might populations of species change if the environment becomes a patchwork of tiny green and brown splotches? tnx.
Wednesday, September 7, 2016 by Dj

physical science
A pure gold bar is made up of 19.55mol of gold. What is the mass of the bar in grams?
Wednesday, September 7, 2016 by ally

Engineering science
A motorcycle accelerates from rest 5m/s until it reaches 72km/h.calculate the distance travelled by the motorcycle?
Wednesday, September 7, 2016 by Seblon

Science
I'm struggling to figure out velocity and understanding the formulas. My question I have to try and figure out is... If a block of wood dropped from a tall building has reached a velocity of 78.4 m/s, how long has it been falling? I just don't know how to figure it out...
Wednesday, September 7, 2016 by Rhonda

Science
Describe at least one societal issue that scientists will be able to address using the sequence of the human genome.
Wednesday, September 7, 2016 by Nikki

Science
Sound travles at a speed of 340 m/s how long does it take to travel 850 m
Wednesday, September 7, 2016 by Milly

science
summarize the process of sexual reproduction and explain how variations of inherited traits can increase or decrease an organism's chance of survival
Wednesday, September 7, 2016 by srw

Science
A current is of 1mA is flowing through a copper wire, how many eloctons will pass a given point in 1 second?
Wednesday, September 7, 2016 by Ansari

science
a carnot engine is designed to operate between 480K and 300K.if the engine actually produces 1.4j of mechanical energy per calorie of heat absorbed,then the ratio of actual efficiency to theoretical efficiency is
Wednesday, September 7, 2016 by hari

Science
Calculate The Volume Occupied By 10(superscript)22 Molecule Of Gas At 300 kalvin And 760mm Pressure
Wednesday, September 7, 2016 by Suraj

science
which of the following is an example of a model? a. The solar system b. a globe c. a planet d. a padlock Thanks!
Wednesday, September 7, 2016 by avery

Math science humanity kiswahili English art pshe
Kylie cit an Apple into 12 equal parts . if she aye 1/4 of the apple, how many parts would remain
Wednesday, September 7, 2016 by Juanita

Science
May somebody help and explain please with 2 question explain why science is a continuous progression of study and y is the use of the inquiry process a practical way to approach science
Wednesday, September 7, 2016 by New here

Scence
May somebody help and explain please with 2 question explain why science is a continuous progression of study and y is the use of the inquiry process a practical way to approach science
Wednesday, September 7, 2016 by New STudent

fire engineering science 300
Calculate the volume of one mole of gas at STP(Standard Temperature & Pressure). Given: P=101 325 Pa n=1mol R=8,31 J K-1 mol-1 T=273K Given: P1=785mm Hg P2=760mm Hg T1=293 K T2=273 K V1=60cm3
Wednesday, September 7, 2016 by nambitha

fire engineering science 300
A mass of a gas has a volume of 60cm3 at a temperature of 20°C and a pressure of 785mm mercury. Calculate the volume of a gas at STP(Standard Temperature & Pressure). Given: P1=785mm Hg.
Wednesday, September 7, 2016 by nambitha

Science
How Can Nitrogen Be Obtained From Ammonia Gas?
Wednesday, September 7, 2016 by Adedotun

Science
Whatis the meaning of bulb rated 10w~220v?
Wednesday, September 7, 2016 by sonika

Science
What is the meaning of bulb rated 10w~220v?
Wednesday, September 7, 2016 by sonika

science
A thin non-conducting rod is bent to form the arc of a circle of radius a and subtends an angle at the center of the circle. A total charge q is spread uniformly along its length. Find the electric field at the center of the circle in term of, a, q, and angle.
Tuesday, September 6, 2016 by supansa

physics
How do the laws of physics apply to others sciences such as biology chemistry and earth science? And give an example to show the connection.
Tuesday, September 6, 2016 by nulloa

Science
How do the colour of survivor animals relate to their habitat background? possible explanation tnx a lot
Tuesday, September 6, 2016 by Dj

SCIENCE
1. Receives proteins and materials from the ER, packages them, and distributes them. 2. Has passageways that carry proteins and other materials from one part of the cell to another. Need help making these 2 sentences in a flattering discription
Tuesday, September 6, 2016 by HAYDEN

Science
Radius of the earth is 6400km and g is 9.8 m÷s find the value of g produced on a mass of 20 kg at a distance of 10000km from the earths surface ?
Tuesday, September 6, 2016 by sonika

Science
An alumium rod when measured with a steel scale both being at 25 degree celcius appears to be 1 meter long. If the scale is correct at 0 degree celcius, what is the true length of the rod at 25 degree celcius? What wull be the length of rod at 0 degree celcius?
Tuesday, September 6, 2016 by Zenji

Science
What is the name for organisms that consume other organisms for energy
Tuesday, September 6, 2016 by Matt

science
why is it advised not to store pickles in coppes or brass vessels?
Tuesday, September 6, 2016 by pintu

science
write the equation for the manufacture of bleeching powder
Tuesday, September 6, 2016 by pintu sahu

Physical Science
You drop a water balloon off of a tree branch, and you time the drop time at Δt = 0.8 sec, from the instant you drop it to the instant it impacts the sidewalk. What is the height of the tree branch?
Monday, September 5, 2016 by Courtney

Science PLEASE HELP
what functions do individual cells perform that are similar to the functions of our bodies?
Monday, September 5, 2016 by Joud

science
what functions do individual cells perform that are similar to the functions of our bodies?
Monday, September 5, 2016 by Joud

Science
Calculate the energy release in 1 gram of Uranium 235
Monday, September 5, 2016 by ADA

Science
An arrow is shot vertically upwards with an initial velocity of 14 m/s . Calculate the height reached
Monday, September 5, 2016 by Nadia

Science
500g of water at 100°c is mixed with 300g of water at 20°c.specific heat capacity of water is 4.2Jg°c.find the final temperature of mixture. (Physics)
Monday, September 5, 2016 by Rahul

Science Earth
Guard cells are closed during the night. This means that no gases can come in or out of the stomata. Why would the plant not need to take in gas during the night? How can I answer in this question?
Sunday, September 4, 2016 by CC

English
How would you handle the following situations? In your answers, refer to specific skills that you might use, and include words that you might say. Remember that a chairperson is a polite and tactful communicator. a. Your social studies group is supposed to be discussing the ...
Sunday, September 4, 2016 by Tala

Computer science
What is the count for the instruction CountMe as a function of n for the fragment below? Line 1: j = 1 Line 2: while (j<= n/2) { Line 3: i = 1 Line 4: while (i<=j) { Line 5: CountMe Line 6: i++ Line 7: } Line 8: j++ Line 9: }
Sunday, September 4, 2016 by Vaibhav

Computer science
What is the count for the instruction CountMe as a function of n for the fragment below? (Assume that 2k-1 ≤ n < 2k). Line 1: j = 1 Line 2: while (j<= n) { Line 3: CountMe Line 4: j = 2*j;
Sunday, September 4, 2016 by Vaibhav

Computer science
What is the count for the instruction CountMe as a function of n for the fragment below? (Assume that n can be either even (2k) or odd (2k+1)) Line 1: j = 0 Line 2: while (j < n) { Line 3: CountMe Line 4: j = j+2; }
Sunday, September 4, 2016 by Vaibhav

Computer science
What is the smallest value of n such that an algorithm whose running time is (2^15)n runs faster than an algorithm whose running time is 2^n on the same machine?
Sunday, September 4, 2016 by Vaibhav

computer science
write a fortran program to read in the scores of 120 students using an array
Sunday, September 4, 2016 by wizzylion

science
For the reaction 2N2O(g) ⇌ O2(g) + 2N2(g), what happens to the equilibrium position if the volume decreases? A. does nothing B. shifts to the left C. doubles D. shifts to the right
Sunday, September 4, 2016 by Ben

Science
A 1.37molal of H2SO4 has a density of 1.22g/mL.Determine the Concentration in Normality
Sunday, September 4, 2016 by Harrel

computer science
write a fortran program to read in the scores of 120 students in a class using an array
Sunday, September 4, 2016 by wizzy

science
Prove that the maximum horizontal range is 4times the max height attaind by projectile when fired at an inclined so as to have max. Horizontal range
Saturday, September 3, 2016 by sankalp

Science
MMR causes autism Help with the connection between MMR vaccine to autism pros and cons
Saturday, September 3, 2016 by Sam

science
Carbon+argon= + =
Friday, September 2, 2016 by mar

science ( physics )
Two cars A and B are seprated by a distance of 0.5 km and moving in the same direction with same speed. A car C moving with 10 km/h in opposite direction meets these cars at an interval of 1 minute. The speed of A and B is
Friday, September 2, 2016 by Shivam karn

Science
A snooker ball X of mass 0.3kg moving at 5m/s hit a stationary ball Y of mass 0.4kg and Y move at a velocity of 2m/s at angle to the initial direction of X. Find the velocity and direction of X after hitting
Friday, September 2, 2016 by MARTIN

Science help immediately
You are exercising on a hot day. Your body temperature goes up. You begin to sweat. The sweat cools your body. Sweating is an example of: A. Input. B. Process. C. Output. This D. Feedback. or this?
Friday, September 2, 2016 by Stacie

integrated science
A planet is 2.45 x 10^9 km away. How long would it take in hours to travel to the planet at the speed of light? (speed of light is 2.998 x 10^8 m/s)
Thursday, September 1, 2016 by David

science help pls pls
The table below shows the average distances of Jupiter and Earth from the sun. Name of Planet Average distance from the sun (in AU) Jupiter 5.2 Earth 1.0 What is the difference between the orbital periods of Jupiter and Earth? 4.20 years 6.20 years 8.86 years 10.86 years 12.40...
Thursday, September 1, 2016 by Oscar

biology
which of the following is consistent with the theory of vitalism ? A.all matter contains a vital force** b.the chemistry of life and nonlife are similar c. living things contain a vital force absent in nonliving things d. life must be sustsained through a series of chemical ...
Thursday, September 1, 2016 by 9th grader

science
A(n) ____________ is a legal document issued by a government that gives an inventor exclusive rights to make, use, or sell an invention for a limited time.
Thursday, September 1, 2016 by U dont know me

biochemistry
which of the following is consistent with the theory of vitalism ? A.all matter contains a vital force** b.the chemistry of life and nonlife are similar c. living things contain a vital force absent in nonliving things d. life must be sustsained through a series of chemical ...
Thursday, September 1, 2016 by 9th grader

science
25. Perform the following conversions. (Do your work on scratch paper and then type answer.) A. 105 m = cm B. 2000 mL = L C. 3400 g = kg D. 0.985 km = m E. 2345 mm = m F. 34 kg = g
Thursday, September 1, 2016 by katie

science
A/MX-----AX/M and AX is green coloured solution.then A and MX RESPECTIVELY ARE
Thursday, September 1, 2016 by Anshul

Science
Which of the following questions is outside the scope of science? a. how are religion and philosophy different b.what is the diet of an american alligator c. how do humans digest protein d. how does gravity affect an airplane's motion
Thursday, September 1, 2016 by Steven

science
how were you able to determine the branches of science that are connected to tha issues that the filipinos are facing right now?
Thursday, September 1, 2016 by Aeron michael

Science
Q1: Why do scientist use models? A.) Scientist use models to learn about things that are too small, too late, or too complex to observe directly. B.) Scientist use models because doing so is always part of the scientific method. C.) Scientist use models because they always ...
Thursday, September 1, 2016 by Help please

8th Grade Science
Why do scientist use standered units of measurements? A.) Because their tools only measure in units B.) Because their units are either too small or too large to work with C.) So they can communicate findings without confusion D.) So that people who are not scientists can ...
Thursday, September 1, 2016 by ItsMe!

science
what functions do individual cells perform that are similar to the functions of our bodies?
Wednesday, August 31, 2016 by Joud

Science
what are some barriers to solve the zika virus problem? What are some possible solutions for zika virus problem? According to the off the podium article about zika virus. tnx a lot .
Wednesday, August 31, 2016 by Dj

Science
Give an example of population.
Wednesday, August 31, 2016 by John Dosley

science
Equations to show how the ff form complexes A. Fe^2+ and H2O B. Cr^3+ and NH3 C. Fe^3+ and CN^-
Wednesday, August 31, 2016 by Fofie

math
mr sato will give each pair of students 3 magnets. So far Mr sato has given 9 pairs of students their 3 magnets..How many more magnets does Mr Sato need so that each pair of students has exactly 3 magnets.There are 24 students in a science class.
Wednesday, August 31, 2016 by Anonymous

Science
Can someone explain to me, what exactly scientific principles are?
Wednesday, August 31, 2016 by Sammy

Science
A student measures the mass of a paper clip. The student’s data table is shown below. The accepted value for the paper clip’s mass is 1.14 g. Trial 1 - 2.45 g Trial 2 - 2.40 g Trial 3 - 2.42 g Which of the following describes the student’s measurements? a. The ...
Wednesday, August 31, 2016 by Scarlet

Science
Is the inventory of time machine related to black hole
Wednesday, August 31, 2016 by Ronson

Science
A student measures a room to be 20.0m*17.16m. Which of the numbers below represents the room's area with the correct number of significant figures? A) 340 meters squared B) 343 meters squared*** C) 343.2 meters squared D) 343.20 meters squared Am I correct? Not sure if it...
Wednesday, August 31, 2016 by Scarlet

science
Using an example, explain how being able to understand scientific principles and think scientifically can help you solve problems and answer questions in your everyday life
Wednesday, August 31, 2016 by ttng

science
I believe that our solar system formed by the same process as star formation. A huge cloud of dust and gas collapsed and condensed. Gravity pulled matter into the center core, nuclear fusion began, and our Sun was created. Remaining matter and gas clumped together to form the ...
Wednesday, August 31, 2016 by javier

Science
a body of mass 500g moving at 5m/s comes to rest after covering a distance of 5m.find the retarding force acting on it.
Wednesday, August 31, 2016 by Sanjaytharan

SCIENCE
A student measures a rectangular room to be 20.0 m * 17.16 m. Which of the following numbers represents the room's area with the correct number of significant figures? 340 m^2 343 m^2 343.2 m^2 343.20 m^2
Wednesday, August 31, 2016 by Giovanni

Math
Several students were surveyed about their favorite class. 26 students chose art 19 English 21 math 16 music 32 science. What fraction of the of the students chose music as their favorite subject.
Wednesday, August 31, 2016 by Anonymous

Math
Several students were surveyed about their favorite class. 26 students chose art 19 English 21 math 16 music 32 science. What fraction of the of the students chose music as their favorite subject.
Wednesday, August 31, 2016 by Anonymous

SCIENCE NOW
an experiment was conducted to test which of two antibiotics was more effective at killing a certain type if bacterium cultures a and b were treated with antibiotic 1; cultures c and d were treated with antibiotic 2; culture e was not treated with antibiotic. based on the ...
Tuesday, August 30, 2016 by coolguy123

SCIENCE
state at least one possible source of bias in an expirament and describe how you can reduce it.
Tuesday, August 30, 2016 by coolguy123

SCIENCE NOW
state at least one possible source of bias in an expirament and describe how you can reduce it. plz help
Tuesday, August 30, 2016 by coolguy123

science
things people must have to survive
Tuesday, August 30, 2016 by Hugo

science
A concave lens or focal lens 10cm produce an erect image 40cm from the lens .Determine the object distance and magnification.
Tuesday, August 30, 2016 by samuel

Science
Which of the following identifies a measurement, its SI units, and the tool most commonly used to measure it? a. length, meter, ruler *** b. temperature, degrees Fahrenheit, thermometer c. weight, gram, scale d. volume, millimeter, meniscus Why do scientists use standard units...
Tuesday, August 30, 2016 by Chloe, please look at my answers!

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