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April 29, 2016

Homework Help: Science

Branches of Science

Recent Science Questions

Science - N Cycle Management
Consider a heavily grazed pasture of fescue grass mixed with clover (clover is a legume) on a spring day. Assume it has not rained for several days and the soil has drained below field capacity. (Remember that cattle not only consume grass, but also destroy some by walking on ...
Wednesday, November 4, 2015 by Adam

Science - N Cycle Management
Consider a corn field in the spring at the end of April. The field has been heavily tilled in the fall and all residues have been incorporated in the soil, and are decomposed by this time. Chemical fertilizer (an inorganic fertilizer with only nitrate nitrogen - NO3) has been ...
Wednesday, November 4, 2015 by Adam

science
what is the density of an object with a mass of 60g and a volume of 2cm cubed
Wednesday, November 4, 2015 by Kalyn

Science
An object has more momentum if it has which of the following? a. a large mass and low velocity b. a high velocity and a small mass <- c. A high velocity and a large mass d. a low velocity and small mass
Wednesday, November 4, 2015 by HELP!! URGENT!!

Science
a horse runs with an initial velocity of 11m/s and slows to 5.2 m/s over a time interval of 3.1 s what is the horse's average acceleration
Wednesday, November 4, 2015 by anonymous

Science
How are the processes of natural selection and artificial selection similar? How are they different? (Make sure to include 2 similarities and 2 differences, along with an explanation for each)
Wednesday, November 4, 2015 by Alexia Smith

Science
On a topographic map, five contour lines are very close together. The contour interval is 100ft. How high is this feature? Answer: 400ft
Wednesday, November 4, 2015 by Sue

Science
State how comparing the amino acid sequence of a protein can provide evident that evolution has taken place. A: If evolution has taken place, then, in general, species descended from a recent common ancestor should have fewer amino acid differences between their proteins than ...
Wednesday, November 4, 2015 by Victoria

Social Studies
1) How did eugenics reinforce nativist ideals? A: Eugenics fueled the nativists' argument for the superiority of the "original" American stock--white Protestants of northern European descent. 2) What political, social, and economic contributions did women make to...
Wednesday, November 4, 2015 by Victoria

science
what are some family characteristics for Halogens
Wednesday, November 4, 2015 by heather

Science help
The length of a football field is 100 yards. When you compare geologic time (4.6 billion years) to the length of a football field, you will find that each yard on the field will equal 46 million years, and each 10-yard section will equal 460 million years. Use this information...
Wednesday, November 4, 2015 by Aria

SCIENCE
.) Iodine 131 is a radioactive waste product generated in nuclear power plants. It has a half life of 8 days. If 16 grams was released from the Fukushima power plant 32 days ago, how much is left now?
Wednesday, November 4, 2015 by BOB

science
the man walks 20 steps forward from point A to point B and moves 5 more steps to C
Wednesday, November 4, 2015 by melojen

Science
which of the following skulls is most likely that of an herbivore?
Wednesday, November 4, 2015 by YRN DJ

Gentry science
What in nature could you find a source of the same energy that that provided batteries
Tuesday, November 3, 2015 by Anawahe

Science
2 racing cars of masses m1 and m2 are moving in circles of radii r1 and r2 respectively. Their speeds are such that each makes a complete circle in same time t. The ratio of Angular speed of the first car to the second car is?
Tuesday, November 3, 2015 by ABC

Science
a tank 2m high is half filled with water and then filled to the top with oil of density 0.8 g/cc . what is the pressure at the bottom of the tank? g= 10m/s2
Tuesday, November 3, 2015 by ABC

U.S. History Answer Check (Ms. Sue)
1) How did eugenics reinforce nativist ideals? A: Eugenics fueled the nativists' argument for the superiority of the "original" American stock--white Protestants of northern European descent. 2) What political, social, and economic contributions did women make to...
Tuesday, November 3, 2015 by Victoria

Science <3
Why do humans laugh?
Tuesday, November 3, 2015 by curious

Science
I do understand what the terms balanced energy and the term unbalanced energy mean when it relates to science. Please help me understand.
Tuesday, November 3, 2015 by Patrick

SCIENCE
what is the difference between a continental plate and an ocean plate?
Tuesday, November 3, 2015 by sue

SCIENCE
WHAT IS BELIEVEED TO CAUSE PLATE TECTONICS MOVE?
Tuesday, November 3, 2015 by JANETTE

science
Water is useful for reducing friction between objects. However you also learned that (due to friction) moving water causes rough rocks to become smooth. How can this be?
Tuesday, November 3, 2015 by Caitlin

U.S. History
1) How did eugenics reinforce nativist ideals? A: Eugenics fueled the nativists' argument for the superiority of the "original" American stock--white Protestants of northern European descent. 2) What political, social, and economic contributions did women make to...
Tuesday, November 3, 2015 by Victoria

natural science
usingbisection method and fp,evaluat the solution set of x3-4x-9
Tuesday, November 3, 2015 by ayele

science
If 0.188 moles of zinc reacts with excess lead(IV) sulfate, how many grams of zinc sulfate would be produced in the following reaction?
Tuesday, November 3, 2015 by Anonymous

science
If 0.188 moles of zinc reacts with excess lead(IV) sulfate, how many grams of zinc sulfate would be produced in the following reaction?
Tuesday, November 3, 2015 by Anonymous

Science for connections academy HELP!
Tony's teacher gave him an unknown substance to identify on its properties. after a few tests Tony listed his observations. Solid at room temperaure. Brittle. Conducts electrcity. What kind of substance does tony have? A:nonmetal B:Metal C:Metalloid D:Noble gas Please say ...
Tuesday, November 3, 2015 by Emily Peppo

7th Grade Science About Earth Quakes
Hi, I need some information about Earth Quakes. My question is: Where & Why do Earth Quakes occur? I'm not cheating or anything I just need some help with this topic for the project I'm doing about Earth Quakes right now. Please Help ME! Thanks :D
Tuesday, November 3, 2015 by MusicLover14

science
I WANT TO KNOW MOLARITY OF BENEDICT'S REAGENT FOR TITRATION .. BOTTLE CONSISTS OF 500ML BENEDICT'S REAGENT. PLZZ HELP
Tuesday, November 3, 2015 by ishween kaur

Science
The density of pure silver is 10.5 g/cm3. What is the mass of a sample with the volume of 10.0 cm3?
Monday, November 2, 2015 by Jewel

computer science
A Bagels store charges 75 cents per bagel for orders of less than a half-dozen bagels and 60 cents per bagel for orders of a half-dozen or more. Assume that the number of bagels ordered has been stored in a variable named NumBagels. Write VB code that calculates and stores the...
Monday, November 2, 2015 by Patricia

Science
can you help me understand why it takes more energy to heat something bigger than something smaller please. thank you.
Monday, November 2, 2015 by Abigail

science
Ana exerts a force of 20 N on a volleyball that has a mass of 0.15 kg. What is the force that the volleyball exerts on Ana?
Monday, November 2, 2015 by john

SS HELP PLZ ASAP
1) The science that studies population distribution and change is called _________(1 point) A. demography B. geography C. economy D. sociology 2) Canada is bigger than the united states, but only has _______ as many people.(1 point) A.one-half B.one-fourth C.one-eighth D.one-...
Monday, November 2, 2015 by regan

science
What are the major phases of the cell cycle?
Sunday, November 1, 2015 by Kennedy

science
why is it important for a cell to grow before it replicates its DNA?
Sunday, November 1, 2015 by andrea

Physical Science
An astronaut in a spacesuit has a mass of 100 kilograms. What is the weight of this astronaut on the surface of the Moon where the strength of gravity is approximately 1/6 that of Earth?
Sunday, November 1, 2015 by Chiara

science
A 155-N sign is supported by two ropes. One rope pulls up and to the right 26.5° above the horizontal with a tension T1, and the other rope pulls up and to the left 49.5° above the horizontal with a tension T2, as shown in the figure. Find the tensions T1 and T2.
Sunday, November 1, 2015 by stone

Science
What type of water evaporates quicker:well water or salt river water?
Sunday, November 1, 2015 by Ethan

need help
ESSAY EXAMINATION 1 Objective To successfully complete the course, you must complete Essay Examination 1, which requires you to write your answers to specific questions covering important concepts from your studies. Please provide your answers using a Microsoft Word file. You ...
Sunday, November 1, 2015 by Anonymous

science
Saturn rotation and revolution compared to earth
Sunday, November 1, 2015 by lee

science
A tower is 24 m high. A stone is projected upwards from the tower, at a velocitry of 24,5 m/s. Calculate how long it would take the stone to reach the ground at the roof of the tower.
Sunday, November 1, 2015 by francis

Science
A 25 l partially filled weather balloon has a volume of 11 L at sea level where the pressure is 1 atm. It rises to an altitude of 6.096km (20,000 feet) where the pressure is only .48 atm. What is the resulting volume? At what pressure would it burst? Use the internet to find ...
Saturday, October 31, 2015 by Rich

science
Why do earthquakes occur along the San Andreas Fault
Saturday, October 31, 2015 by valerie

science
A scenery in your drawing room has height h and is hung in the wall so that its lower edge is at a distance d above the eye of an observer. How far from the wall should the observer stand to get the best view?
Saturday, October 31, 2015 by sonam

science
A scenery in your drawing room has height h and is hung in the wall so that its lower edge is at a distance d above the eye of an observer. How far from the wall should the observer stand to get the best view?
Saturday, October 31, 2015 by sonam

Science
A body weight 500 N in air and weight of displace water is 300N then find apparent loss in the weight of body. The upthrust on body. The volume of the body
Saturday, October 31, 2015 by kartik

science
*Fill in the banks with suitable prepositon. Frustration results ------violence. (a) of (b)in (c)at (d)with
Saturday, October 31, 2015 by ABDULLA

Science
pH values of 12,6,10.5 and 4.3.which of these is acidic and basic
Friday, October 30, 2015 by Joshua

Science
Which layer of the sun's atmosphere are you looking at when you look at an image of the sun? A: photosphere B: chromosphere C: corona D: prominence 2. Which of the following could have been found in the giant cloud that formed the solar system? A: hydrogen and helium B: ...
Friday, October 30, 2015 by Exam Kun

science
10g of calcium carbonate reacted with phosphoric acid to produce calcium phosphate, water and carbon dioxide. write the word equation
Friday, October 30, 2015 by munansi

Science
if two waves are traveling at the same speed along the x axis will the one with the longer wavelength have the larger or smaller freq ? explain in terms of the number of wavelengths that pass a given point on the x axis in 1 sec My answer: smaller But how do I explain interns ...
Friday, October 30, 2015 by Anonymous

Science
A vertical load of 100N is supported by two chains, A and B, in the same vertical plane. The force in A is 50N and acts in a line at 30 degrees to the horizontal plane (i.e. at 120 degrees to the 100N load). Determine the force in chain B and the angle between A and B.
Friday, October 30, 2015 by King

Science
An apple has a volume of 10ml and a mass of 0.8g. Will it sink or float in watee and I need to show my work
Thursday, October 29, 2015 by jay jay

Honors Physical Science
How do I find the speed of a truck that travels 14.5 km in 9.25 minutes in km/hr?
Thursday, October 29, 2015 by Adrienne

Science
A student had to take the volume of a sphere by using a graduated cylinder. Before they put it in the water,the cylinder read 50ml.when the sphere was put in the cylinder the water now read 62ml what is the volume of the sphere?
Thursday, October 29, 2015 by jay jay

science
How many parts listed make up a plant or animal cell nucleus?
Thursday, October 29, 2015 by Anonymous

Science
The Sun's surface layer is called the photosphere True or false? I think the answer is true. A star system has at least 3 stars. True or false? I think the answer is false. I am not completely sure on these. Could someone check them for me?
Thursday, October 29, 2015 by Anonymous

Social Studies! Reed?
Who organized trade in medieval cities and towns? (2 points) guilds• clergy knights journeymen 2. What is a fief? (2 points) a ruler of the Franks a ruler in Charlemagne's empire land given in exchange for loyalty• a Viking warrior 3. Christians and Muslims ...
Thursday, October 29, 2015 by Sam

Science
Most bacteria are a. unicellular eukaryotes b. unicellular prokaryotes c. multicellular eukaryotes d. multicellular prokaryotes is the answer d or c?
Thursday, October 29, 2015 by Talia

Science
  17. You need to conduct an experiment in the laboratory. This requires that you prepare 500 ml of  sodium acetate buffer with pH = 4.30. In laboratory you have  solution of CH3COOH (pKa = 4.75), and a stock of CH3COONa.3H2O (MW=136.082 g/mol). Using the ...
Thursday, October 29, 2015 by Biochem

Science
Name the components of the respiratory system in the order incoming air would encounter then during breathing.
Thursday, October 29, 2015 by Anonymous

Science
How do layers B and D compare in age? If rock layers between B and D have eroded away, what is the boundary between B and D called? My answer: Layer D is older than layer B. If rock layers between B and D have eroded away, the boundary between B and D are called, an unconformity
Thursday, October 29, 2015 by rAnDoM

Physical science
Which type of graph best shows data that are parts of a whole?
Thursday, October 29, 2015 by ruby

physics math science
A battleship fires a cannon to hit a pirate ship with velocity 200 m/s and angle with horizontal direction 37o. • Find: • A) the position of the bullet after 2 secs, velocity and acceleration. • B) the highest altitude it will reach and time it takes to get ...
Thursday, October 29, 2015 by Projectile Motion

Science
A battleship fires a cannon to hit a pirate ship with velocity 200 m/s and angle with horizontal direction 37o. • Find: • A) the position of the bullet after 2 secs, velocity and acceleration. • B) the highest altitude it will reach and time it takes to get ...
Thursday, October 29, 2015 by Projectile Motion

Social Studies
Who organized trade in medieval cities and towns? (2 points) guilds• clergy knights journeymen 2. What is a fief? (2 points) a ruler of the Franks a ruler in Charlemagne's empire land given in exchange for loyalty• a Viking warrior 3. Christians and Muslims ...
Wednesday, October 28, 2015 by mary Ms. Sue Please

science
quartz is a number 7 on the mohs hardness scale. Apatite is a number 5. a student has a mineral sample that scratches apatite, but quartz scratches the sample. What is the minerals most likely hardness 2 10 6 answer 2
Wednesday, October 28, 2015 by need help

Science
which of the following could not have happened as a pot of water boiled on the stove? A. Particle vibration increased. B. Particle vibration decreased. C. Particles moved father apart. D. Particles moved randomly. My answer is C.
Wednesday, October 28, 2015 by Lin

Science
Felipe made a toy boat out of clay, but it kept sinking in water. He changed the boat's design by making it slightly wider than before. Why did Felipe's newly designed boat float on water? A. He decreased the density by increasing the volume. B. He decreased the ...
Wednesday, October 28, 2015 by Carrie

Earth Science
How to draw 40 degrees north and 70 degrees south with latitude and longitude. plez tell me how to draw it because im studying for a test and they tell me the questions I just need to know how to DRAW IT NOT WEBSITES BUT ITS STILL OK
Wednesday, October 28, 2015 by Ameen from school I.S.187

science
in western united states: How many states border by ocean?
Wednesday, October 28, 2015 by joe

Earth Science
How to draw 40 degrees north and 70 degrees south with latitude and longitude
Wednesday, October 28, 2015 by Ameen from school I.S.187

science
Can the pitch of music affect concentration
Wednesday, October 28, 2015 by Aditto

computer science
5. Calculation of tax in Ruritania In a fictitious country of Ruritania, which is in a fictitious continent called Afrisia, the tax system is highly simplified. They have system where all taxes are converted to one single value and then the tax is applied according to the ...
Wednesday, October 28, 2015 by Bofelo

Science
which of the following features make earth and venus similar to each other ? (1point ) A . their size and mass b. their rates of rotation c. their atmospheres d. their directions of rotation****
Wednesday, October 28, 2015 by Cami

Science
What would happen if gametes were not haploid? a. The offspring would have half the number of chromosomes it is supposed to have. b. The offspring would have double the number of chromosomes it is supposed to have. c. The offspring would be genetically identical to it's ...
Wednesday, October 28, 2015 by goldensparklegirl222

SCIENCE\PHYSICS
If a ball is displaced from O to A along a straight line with a distance of 5.0m,what is the resultant displacement and the total distance by the ball?
Wednesday, October 28, 2015 by Anonymous

MAth
1.solve the inqulitey m-7<6 m<-13 m<1 m<-1 m<13 <-- 2.n-8>5 n>-13 n>1 <-n>13 n>-1 3.p+5<10 p<-15 p<5 p<15 p<-5 <-- 4. the science class is taking a trip to the science center. There are 20 students and an unknowed number of...
Wednesday, October 28, 2015 by DEEZ GOT HEE

maTH
1.solve the inqulitey m-7<6 m<-13 m<1 m<-1 m<13 2.n-8>5 n>-13 n>1 n>13 n>-1 3.p+5<10 p<-15 p<5 p<15 p<-5 4. the science class is taking a trip to the science center. There are 20 students and an unknowed number of adults. The bus ...
Wednesday, October 28, 2015 by AABBCC

science
determine if each equation represent a redox reaction.if it is a redox reaction,write dowm the two half reactions of(1) 2KCL3=2KCL+3O2,,(2)BaCL2+2KIO3=Ba(IO3)2+​2KCL and (3)HCL+NaOH=H2O+NaCL
Wednesday, October 28, 2015 by shanten

science
Put the following events in order as an impression is processed by crime scene investigators -Make a cast of impression -set up crime scene tape -photograph -Take measurements
Tuesday, October 27, 2015 by n

MatH
1.solve the inqulitey m-7<6 m<-13 m<1 m<-1 m<13 2.n-8>5 n>-13 n>1 n>13 n>-1 3.p+5<10 p<-15 p<5 p<15 p<-5 4. the science class is taking a trip to the science center. There are 20 students and an unknowed number of adults. The bus ...
Tuesday, October 27, 2015 by AABBCC

Science college
An elements X having mass and atomic number A and Z react with neutron to give gamma ray and P with mass and atomic number 1.what is X?
Tuesday, October 27, 2015 by Bauras

Physics, science
a car travels 45 km in 1 hour. in each of the next 2 hours, it travels 78 km. what is the average speed of the car?
Tuesday, October 27, 2015 by adriana

science
Put the following events in order as an impression is processed by crime scene investigators -Make a cast of impression -set up crime scene tape -photograph -Take measurements
Tuesday, October 27, 2015 by n

science
what type of crime scene is most likely to contain toolmarks
Tuesday, October 27, 2015 by n

Science
What is the lowest atmosphere on earth?
Tuesday, October 27, 2015 by Chuang

science
how many atoms of S are there in 3 (NH4)2 SO4
Tuesday, October 27, 2015 by Colin

Science
Perhaps you mean Hadean, when the planets of the solar system were just forming out of dust and particles. There were no solid rocks or anything yet, so you could hardly call it geologic. The thing about gravity is that if two specks of dust are drifting around the sun ...
Tuesday, October 27, 2015 by Music Note

science
Calculate 1A.U.if it takes 8,3 minutes for light to travel that far (c=300000 km/s)
Tuesday, October 27, 2015 by Duncan fourie

science
a skater with a mass of 65kg,reaches the bottom of a ramp ,2.5 metres high ,going at 27km.h-1. calculate his kinetic energy as he reaches the ramp calculate how fast he is going by the time he reaches the top of the ramp
Tuesday, October 27, 2015 by zinhle

Science
you started to run at 10km/h when you left your house and you arrived at school .5 hours later. assuming that your average acceleration was 30 /h2, how fast were you running when you arrived
Tuesday, October 27, 2015 by Parker

science
Julie mixes 40g (grams) of unknown X with 20g of unknown Y, how many grams of products will be produced and why?
Monday, October 26, 2015 by chanille

science
If the solution is saturated at 100 degrees Celsius and then cooled to 30 degrees Celsius, how many grams of solute will precipitate out?
Monday, October 26, 2015 by Troy

science
A 65-kg woman descends in an elevator that briefly accelerates at 0.2g downward. She stands on a scale that reads in kg. • During this acceleration, what is her weight and what does the scale read? • What does the scale read when the elevator descends at a constant ...
Monday, October 26, 2015 by mustafa

science
Our 10kg mystery box rests on a horizontal floor. The coefficient of static friction is 0.4 and the coefficient of kinetic friction is 0.3. Determine the force of friction acting on the box if a horizontal external applied force is exerted on it of magnitude: • (a) 0, (b...
Monday, October 26, 2015 by mustafa

science
A 10-kg box is pulled along a horizontal surface by a force of 40N applied at a 30° angle above horizontal. The coefficient of kinetic friction is 0.3. Calculate the acceleration.
Monday, October 26, 2015 by mustafa

SCIENCE EXPLANTION
Explain why the boundary between the Triassic and Jurassic periods is similar to the boundary between the Permian and Triassic periods. Please give me the appropriate websites...NOT ANSWERS. Just Websites :)
Monday, October 26, 2015 by HelpME:(!!!

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