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science
A force of 5N gives a mass M,an acceleration of 18ms-2qnd a mass m,an acceleration of 24m s-2.what acceleration wouldit give if both the masses were tied together?

Science
So I have an 89% in my science class and we took a test worth 15 points. I only got 8 correct which is an F. I have 2 A's, a B, and a D as the other grades in the grade book. How will this F affect my grade? I need it to stay a B

science
Force is exerted to move a body of mass 50kg from 2 m/s to 5m/s over a period of 10 seconds.draw a velocity time graph regarding the same and calculate the value of force.

science
A person is travelling in the east direction with a speed of 2 km/hr with respect to the ground. he finds that the wind seems to blow from north. When he doubles his speed, the wind appears to come from north-east direction. determine the velocity of wind.

science
will the mass of an object ever equal its volume. Give an example of two things that may have the same volume but a different mass?

Science
What is the difference between latitude and longitude

science
Draw and label a diagram of a nitrogen atom. It should have 7 protons,7 neutrons, and 7 electrons

science
If an object has a mass of 56g and a volume of 22cm', will the object float in water? explain your answer.

Science
Mass is measured in grams, accelaration is measured in meters per second squared, and distance is measured in meters. Force is equal to mass times sccelation, and work is equal to force times distance. What is the unit of work?

Science
I need help finding two examples of natural social systems

Science
How do scientist work

Science
when a current is passed through water during the process of electrolysis,two gases are formed. One gas has formed has a boiling point of -256 degrees celsius.Has a chemical or physical change occurred? Explain. ok i've already answered just need a few more sentences. This is ...

science
A body travelled from rest with acceleration 8m/s-2 find its velocity if the distance is 100m

Science
Can someone please explain how to do dot and cross diagrams. Thanks

computer science
____________ is an application program included with Windows that allows the contents of the computer, the hierarchy of folders on the computer, and the files and folders in each folder to be viewed.

Science
What propity makes a metal useful in a electical devices

physical science
Find the gravitational force between two 20 kg spheres that are separated by 4.0 m.

Science
A substance has melting point of 0 Celius and a boiling point of 100 Celius. The substance is most likely * water * hydrogen * gold * table salt

Physical Science
which of the following is a physical change? * sawing a piece of wood in half * burning a piece of wood * rust forming on an iron fence * a copper roof changing color from red to green.

Science (Please help!!)
creating a prototype and troubleshooting are steps in the development of a: a new scientific theory b: a new experiment c: a new scientific law d: a new technology ******* Please help =)

Physics
A science student is riding on a flatcar of a train along a strait, horizontal track at a constant speed of 12.0 m/s. The student throws a ball into the air along a path he judges to make an initial angle 65. deg with the horizontal and to be in line with the track. The ...

Please help do by 10:00 Science
1. Convert 4.0 kilometers (km) to meters (m). (1 point) 0.04 m 40 m 400 m 4,000 m 2. For his science project, Austin wants to determine if the pH of standing rainwater changes over time. He collects a jar of rainwater and places it indoors in a spot that does not receive a lot...

Science
If a cell membrane is both permeable to salt and water, what will immediately occur?

Science
The mass of astromout measured on earth in 8500g. What will be his weight on earth

science
what is the focal lenght of an object 10cm in front of a convex mirror having image that is 5cm behind the mirror?

science
1. If person weighs 176 lbs on earth what is his or her mass on mars where the force of gravity is 37% of that on earth. With Complete solution

Science
a freight train must approach a road crossing at 16km/h. after passing through the intersection, the train speeds up to 65 km/h, taking 10 min to do so. what is the train's acceleration during this time in meters per second squared

physical science
How much would a 81.4 kg person weigh on Venus, where the acceleration of gravity is 8.87 m/s2?

Science
If you have 25 glucose molecules transporting out to 5 glucose molecules how will the molecules need to move to reach equilibrium? Out

science
what is the difference between the momentum of a 2,500 kg honda moving at 40 m/s and a 2,500 kg honda moving at 15 m/s whats the formula? or answer

Science
A car moves at 20 meters in 2 seconds. What is the momentum of the car if it has a mass of 3,000 kg? A football player runs across the field for a tackle. He has a momentum of 1,120 kg x m/s and is moving down the field at 10 m/s what is the mass of the player? Anything helps ...

Science
How do acidity and surface area affect the weathering of most materials? Can you also provide me with a website to read about this as well. I don't know

Science
1. What number on the pH scale is the strongest acid? 2. What number on the pH scale is the strongest base? Can you please help me with this. I am not sure.

Science
You can jump 2 feet vertically on Earth. Figure out how high you would be able to jump on the Moon, where acceleration due to gravity is ⅙ that of Earth. Assume you launch upwards with the same speed on the Moon as you do on the Earth." I've already measured how high I ...

Science
Q1-Who gave the equation (E=MC^2). Q2-Who gave the equation (V=IR). Q3-What was Newton's second law?. Q4-What was Newton's first law?.

SCIENCE
The intensity of solar radiation at the surface of the earth is 1kW/m2 . A roof has a square solar panel of sides 10m that absorbs the radiation completely. What is the average force exerted on the panel?

Science
The binding energy of election is 13.6 v .the loss of mass in formation of h atom is

Science
A 0.5kg mass connected to a light spring of constant 20N/M occilates on a frictionless track. Calculate the total energy of the system

Science
I have a 91 as my average now. I only have two weeks left. What do I need to get and a (93)?

science
How many mole of FeSO4 with one mole of KMnO4 in acidic medium?

science
Compare the costs and benefits of hydropower to that of geothermal power. (Please include two costs and two benefits.)

Maths, science
An open box with square bases is to be made out of a given quantity of cardboard of area Csquare. show that the maximum volume of box is ccube/6√3cubic unit

science
The atomic number of gold is 79 how many neutrons are there in an atom of gold that has atomic mass of 197 amu how you got your answer

science
One proposed project to help restore Louisiana's wetlands is to backfill canals that were built for access to and transportation of oil from the coastal area. why might scientists first want to build and study a model of their proposed project? Help!!

Physical Science/ Chemistry
Which of the following shows the correct order of Family #1 elements from least to most reactive? A) Li, Na, Rb, K B) Li, Na, K, Rb C) Rb, K, Na, Li D) Li, Na, K, Ba

science
How many grams of sodium carbonate,Na2CO3,are required to make a 0,2M solution?

Science am i correct?
What are the 4 ways a blood borne pathogen could enter the body's blood stream? Ingestion Inhalation Absorption Skin to blood contact Injection I choose abc and d am I corrct6?

Science
Which of the following are ways u could contract a blood borne pathogen? Semen.toilet seats.vomit. mucous membrane secretions. Blood to blood. Mosquitos My answer is semen and blood to blood. Am I correct?

Computer science
How does virtual memory work? Thanks.

math
Each test grade in Sara's science class counts for 1/6 of the final grade. The final exam counts for 1/2. Sara's test scores are 72, 84, and 90. Her final exam score is 90. What is Sara's final grade for the class? A) 83 B) 86 C) 87 D) 89

Physics science - forces
A jet plane lands on a runway and decelerate so to rest. What can you say about the direction of the resultant force on the ane as it decelerates? What can yu say about the resultant force acting on the plane as it has come to rest? Many thanks.

computer science
draw a flowchart and write the algorithm for printing the first 10 even numbers

science(physics)
A powerful motorcycle can accelerate from rest to 28m/s in only 4 second . a.what is its average acceleration? b.how far does it travel in that time

Science
If two person sitting on a sea-saw has different weights,how can thay balance the sea-saw

Science
We call zone of saturation the level to which the water fills all the interstices, or the pores, with the ground and all cracks minusclus of the rock/this fresh water supply exists in all the grounds. Why?

Science
what geographical features create natural boundaries for water to flow toward one ocean or another?

science
can someone check my answers? 1) which of the following statement about igneous rocks is correct? A. intrusive igneous rocks are formed when magma is cooled above the ground. b. extrustive igneous rocks are formed when magma is cooled above the ground. c. extrusive igneous ...

Science
1.Which of the following is a good study habit? A.maintaining a positive attitude ** B.waiting until the last minute to start on an assignment C.listening to the television while studying D.studying when you are tired 2. Your friend John complains about his poor grades. You go...

Science
A. How could the scenario have been prevented? B. How should the student respond in the scenario to minimize the harm? During an experiment,Carin carefully pours solution A from a test tube into a beaker.Krystal sneaks up behind Carin to wish her a happy birthday.Carin ...

Science
2. Your friend John complains about his poor grades. You go to his house to study one day. The only place John has to study is at the kitchen table. While you are there, his younger brothers run through the kitchen screaming over and over again. What advice would you give ...

Science
Calulations and observations to determine the molarity of given sodium hydroxide solution provided with M/20 oxalic acid solution

Science
1. Which of the following is a good study habit? a.maintaining a positive attitude •• b.waiting until the last minute to start on an assignment c.listening to the television while studying d.studying when you are tired

Math for Ms. Sue
I'm Claire's grandma; a retired teacher of science and supplemental in math. I am stumped on her question about pizza tonight. I'm working via phone with her. Would you mind taking a look at it. I know the answer, but not sure how to explain the results. Please and thanks.

Science
A family is planning to build a raised planting area using a blend of peat moss, mulch, and a rich organic soil in which to grow the plants. they have been told first to place on the ground a layer of material that will allow for a proper drainage each time the plants are ...

Science
In a home's central heating system when the room temperature measured by thermostat reaches a set value, the thermostat sends a message to the heater, and the heater switches off. These actions are an example of: A. a model. B. feedback. C. input. D. A process Is it B?

Science
A group of parts that work together is called. A. Technology B. Process. C. System. D. Feedback I think its C?

Science
You are sitting in a rowboat on a lake, watching waves created by a passing motorboat. If you count 4 crest pass every second, and the crests are 5 feet apart, what is the speed of the water waves?

Physical Science
A man jogs 8 km/h for 5 hours. How far did the man jog?

Science
what is a watershed?

Science
Fill in the blank A minerals _______ is determined by the ability of one mineral to ________ another mineral

Science
A minerals _______ is determined by the ability of one mineral to _________ another mineral

Science
What is the density of steel metal? Please help I don't know the anwser!!!!

Science
Hemlocks are a common type of tree in the northern forests of the United States. In studying one forest, a forester noticed that mature hemlocks were abundant but there were very few young hemlocks. She wondered why there were so few young hemlocks. By reading the records that...

Science
2. Your friend John complains about his poor grades. You go to his house to study one day. The only place John has to study is at the kitchen table. While you are there, his younger brothers run through the kitchen screaming over and over again. What advice would you give ...

science chemistry
balance Redox :- CuS + SO4²- = CuO+SO2

Science
A ball thrown vertically upward and reached to thrower in 6sec what will be velocity and man maximum hight

Science
A train starts from rest and attains a speed of 15 m/s in 10 seconds and produce acceleration of 2.5 m/s (square) it stops in 6 seconds after the breaks apply find the distance covered by train

science
What will be the effect on the colour of blue litmus paper when it is dropped in each of the following solution. 1. Water 2. Lime juice 3. Dilute hydrochloric acid 4. Sodium hydroxide solution.

Science
A compound is made up of two elementsA and B,has A=70%,B=30%.The relative number of moles of Aand B in the compound are 1.25 and 1.88 respectivily.If the molecular mass of the compound is 160g.Find the molecular formula of the compound?

science
The volume of a gas increases from 18.7 m3 to 25.1 m3 while the pressure changes from 1.82 atm to 1.41 atm. If the initial temperature is 353 K, the final temperature of the gas is K.

Physical Science
What is the average kinetic energy of a nitrogen molecule, N2 in the air for 100 degrees Fahrenheit?

Science
THANK YOU DRWLS. I just wanted to thank you because you have been a major part of my successes in High school. Your answers are always clear, easy to understand, and most importantly correct! I just wanted to expresses my gratitude as you are truly the MVP of Jiskha. I'am sure...

Science
What is the difference between saltwater and freshwater?

science
I don't know what to do 4 science in my honners class

Math, science,English and social studies
Hi, do you help with homework? Do you help with reading? Paying money?

science
Johnny stacked 200 cans, each weighing 5 N, on shelves 1 meter high in only 100 seconds. How much power did he use for the task?

Science
A rock is held steady over a cliff and dropped. 1.1 seconds later, another rock is thrown straight down at a speed of 12.1 m/s, and hits the first rock. How far have the rocks dropped before they collide? How long is the first rock in the air before it gets hits by the second ...

Science
Is mushroom, desert, temperature, coral, steak, athletes foot, mold, tree, rocks, dirt, gold, plastic, grapes, turnda Biotic, both, or abiotic

Science
10. How can serveying reading material improve your comprehension? (1 point) > Knowing the main ideas ahead of time helps you know where to focus your attention**** > Reciting the answers to questions out loud will help you remember them > Reading your head make ...

biology/science
Oxygen attracts electrons more strongly than hydrogen does. What kind of bond forms between the two hydrogen atoms and single oxygen atom that form a water molecule? A. A metallic bond B. A hydrogen bond C. An ionic bond D. A polar bond Currently stuck here.

science chemistry
balance Redox :- CuS + SO4²- = CuO+SO2

Science
A bus travels first 20 km in 1 hour next 20 km in half an hour and next 20 km in 1 hour

Biology
I would like some help if that is OK, like soon!:) 1.) A group of scientists proposes an idea that a chemical compound will enable bean plants to grow faster. They grow one group of bean plants in the presence of the compound and another group in the absence of the compound. ...

science
A 100 kg cart accelerates from 0 to 20 m/s in 5 seconds. What is the acceleration?

Science
A piece of unknown metal with a mass of 68.6 grams is heated to an initial temperature of 100 Celsius and dropped into 42 grams of water with an initial temperature of 20 Celsius in a calorimeter the final temperature of the system is 52.1 Celsius the specific heat of the ...

Science 7th Grade
How do i solve this. Atomic Theory Date (year) Name of Scientist(s) Contribution to the Theory Source 5th century BC Leucippus and Democritus They proposed that all matter is composed of tiny particles called atoms that can’t be split into smaller pieces and that attach to ...

Physical Science
While rearranging a dorm room, a student does 310 J of work in moving a desk 1.5 m. What was the magnitude of the applied horizontal force?

science
what mass of CO2 can be formed when 14.17g of C4H10 are burned in excess oxygen I do not even know where to start

Computer Science
What is the rule for this function? input 1 output 2 input 2 output 5 Input 3 output 12 Input 4 output 34 Input 5 output 135 Input 6 output 741

Science
A transformer has 60 turns in the primary and 1200 turns in secondary.if the primary voltage is 500 V what will be the secondary voltage be? What will the current be if the primary if the secondary carries 2.0 A

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