Wednesday
July 27, 2016

Homework Help: Science

Branches of Science

Recent Science Questions

SCIENCE HELP PLS
Which of the following is a source of graywater? Sewage water Shower water Water waste from an auto repair garage Water waste from a chemical company is it b
Sunday, January 31, 2016 by Oscar

Science
Describe one observation astronomers use to show that the universe is expanding
Sunday, January 31, 2016 by Sarah

Science
-Explain how and when the universe formed according to the big bang theory? -Explain how and when our solar system formed? -Describe one observation astronomers use to show that the universe is Expanding?
Sunday, January 31, 2016 by Sarah

science
1. The liquid part of the blood is called _____. (1 point) hemoglobin plasma platelets white blood cells 2. Your circulatory system can best be compared to _____. (1 point) gates a net pipes a balloon 3. Which of the following shows the correct order of blood flow? (1 point) ...
Sunday, January 31, 2016 by Anonymous

science
Which of the following describes Joseph Lister’s role in discovery and prevention of disease? (1 point) recognized the relationship between disease and cleanliness discovered that microorganisms cause disease in humans invented pasteurization developed a series of methods...
Sunday, January 31, 2016 by Anonymous

science
how many electrons are in the sodium sulphate?
Sunday, January 31, 2016 by jailos

Science
if a strong odour is smelt continuously for some time the sensation of smell of that substance weakness why?
Sunday, January 31, 2016 by Rabin

science
a body floats with only 30% of its volume out of water.calculate the density of this body.
Sunday, January 31, 2016 by kaunda kapalu

Science
which part of the tongue is stimulated by more temperature? Explain.
Sunday, January 31, 2016 by Rabin

SCIENCE
A MACHINE OF EFFICIENCY 60% IS USED TO RAISE A LOAD OF 150kg THROUGH A VERTICAL DISTANCE OF 2.5m.CALCULATE THE WORK DONE [IN JOULES]. I tried E=WORK OUTUT/WORK INPUT times 100% 60=150 times 10 times 2.5/work input times 100 60 times work input=3750 times 100 work input=375000/...
Sunday, January 31, 2016 by JOY

science
a 50 kg of astronaut ejects 100 g of gas from his propulsion at a velocity of 50 m/s. what is his resulting ?
Sunday, January 31, 2016 by kim allyson

Science
Find the resultant of two displacement vectors A and B, the magnitude of A is 45 meters and the magnitude if B is 25 meters?
Sunday, January 31, 2016 by Vince Jerald

Science
An artificial satellite circles around the earth at the height where the gravitational force is one fourth of that at earth's surface. If the earth's radius is R the height of the satellite above the surface of the earth is?
Sunday, January 31, 2016 by Shubham

Science
Explain how coal is useful in the production of iron and aluminium.
Saturday, January 30, 2016 by Anonymous

science
what is the velocity of a 0.7 kg ball that has a momentum of 1.4 kg m/s
Saturday, January 30, 2016 by kc

science
Which is not part of your immune system's response to a disease-causing organism? vaccination recognition disposal immunity vaccination right
Saturday, January 30, 2016 by Anonymous

Science
Ionic bonds: a. result from the sharing of electrons between atoms. b. form only between polar molecules. c. form between atoms that develop opposite charges. d. result from the natural repulsion that develops between protons. answer is C
Saturday, January 30, 2016 by mandy

Science
As a result of rigorous experimentation Question 7 options: more hypotheses may be developed. more questions may be asked. a new biological concept could emerge. entire theories may be modified or discarded. all of these i suppose
Saturday, January 30, 2016 by mandy

Science
Hypotheses can be rejected or supported by experiments, or, in some instances, new observations. i think it's true
Saturday, January 30, 2016 by Seth

Science
Consider the researcher's experiments on the mysterious die-offs of fish in North Carolina rivers. Which of the following best represents her main hypothesis? Question 8 options: Fish maintained in laboratory environments were dying when exposed to river water. Microscopic...
Saturday, January 30, 2016 by Seth

Science
Organisms designated autotrophs obtain their energy from: other producers. dead consumers. decomposers. inorganic sources. i think it's all of these.
Saturday, January 30, 2016 by Jane

Science
How do astronomers use spectroscope??
Saturday, January 30, 2016 by Tina

Life science,geography ,history and mathematical literacy
Is it possible for me to do Nursing with those subjects?
Saturday, January 30, 2016 by Reazy Beans

pure maths, tourism, religion, life science, life orientation, agriculture
do I fit to study nursing? ?
Saturday, January 30, 2016 by shanique

Science
How does altitude affect climate? The higher the altitude, the colder the climate will be. (MY ANSWER) The lower the altitude, the older the climate will be. The higher the altitude, the hotter the climate will be. Altitude is not related to climate.
Friday, January 29, 2016 by LOVE

Science
Plz correct me if I'm wrong!! Which of the following is a chemical property of aluminum? A.) The melting point of aluminum is 660 degrees C B.) The boiling point of aluminum is 2519 C C.) Aluminum does not dissolve in water D.) Aluminum reacts with oxygen••
Friday, January 29, 2016 by Vanessa

Science
A storm with winds over 120/km/h that can last several weeks is a? A.Tornado B Hurricane C Jet Stream D Thunderstorm I think its hurricane am i right?
Friday, January 29, 2016 by Sam

Science
You digestive system has three main functions: digestion, absorption, and elimination. In which organ does absorption begin? A)Mouth B)Stomach C)Small intestine D)Gallbladder I think its C.
Thursday, January 28, 2016 by I need help

Physical Science
At a baseball game a ball of mass m = 0.11 kg moving at a speed v = 22 m/s is caught by a fan. the ball is stopped in 0.014 s , find the average force of the ball on the catcher's hand?
Thursday, January 28, 2016 by Eryn

computer science
The question thus is the military initiated Arpanet, which matured into our Internet through a high social value of its potential, still provide the same social value it initially provided when the web exploded in popularity?
Thursday, January 28, 2016 by kris richey

Computer Science
Create a class called Shapes that has a private int field named radius and the proper get- and set- methods (according to our Java coding standards). Create a constructor that takes an integer as a parameter to initialize the radius. Create a void method called report() that ...
Thursday, January 28, 2016 by Justin

science
what happens to animals when habitats change
Thursday, January 28, 2016 by Anonymous

Science
Plz Correct me!! Table salt has the chemical formula NaCl. Table sugar has the chemical formula C12H22O11. Which of the following is true? (1 point) Both compounds are held together by chemical bonds. Both compounds have the same density. Both compounds react with water. Both ...
Thursday, January 28, 2016 by Vanessa

Science
Plz correct me!! A student combined water, sugar, and salt in a beaker. Which of the following statements is true? (1 point) The individual substances can be separated by physical means. The individual substances cannot be separated by physical means.* A new substance is made ...
Thursday, January 28, 2016 by Vanessa

Science
Table salt has the chemical formula NaCl. Table sugar has the chemical formula C12H22O11. Which of the following is true? (1 point) Both compounds are held together by chemical bonds. Both compounds have the same density. Both compounds react with water. Both compounds contain...
Thursday, January 28, 2016 by Del Rey

Science
Table salt has the chemical formula NaCl. Table sugar has the chemical formula C12H22O11. Which of the following is true? (1 point) Both compounds are held together by chemical bonds. Both compounds have the same density. Both compounds react with water. Both compounds ...
Thursday, January 28, 2016 by Vanessa

Science
Select three words that belong together. To do this pick one word from each of the three sets below: Set 1: Estuary, Lake, Neritic Zone Set 2: High Salt, Intermediate Salt, No Salt Set 3: Trout, coral, oyster Answer choices: A) Neritic zone, intermediate salt, oyster B) Lake, ...
Thursday, January 28, 2016 by Cami

science
a box of 5kg lies on a ramp of inclination 30degrees. Calculate the maximum static friction force needed to keep the box stationary
Thursday, January 28, 2016 by pertunia

Science
Under which conditions are clouds formed from ice crystals? A.strong winds B.high altitude (MY ANSWER) C.low humidity D.high pressure
Thursday, January 28, 2016 by LOVE

Science
Select three words that belong together. To do this pick one word from each of the three sets below: Set 1: Estuary, Lake, Neritic Zone Set 2: High Salt, Intermediate Salt, No Salt Set 3: Trout, coral, oyster Answer choices: A) Neritic zone, intermediate salt, oyster B) Lake, ...
Thursday, January 28, 2016 by Anonymous

Science
Blank is a round pellet of ice larger than 5 millimeters in diameter. Snow. A hailstone. Sleet. (MY ANSWER) An ice crystal.
Thursday, January 28, 2016 by LOVE

Science
Which of the following safety measures should you observe when there is lightning. Stay away from objects made of plastic. Stay away from metals and other objects that conduct electricity. (MY ANSWER) Stay near open windows. Stay on the roof of your house.
Thursday, January 28, 2016 by LOVE

Science
Eli sees a puddle in parking lot after a rainstorm. The next day, the puddle has gotten smaller. Which of the following most likely happened to the water in the puddle? It condensed. It evaporated. (MY ANSWER) It became colder. It transpired.
Thursday, January 28, 2016 by LOVE

Science
Which of the following is a correct description of a tornado? A large swirling low pressure system that forms over that forms over the warm Atlantic ocean. A winter storm with wind speeds of at least 56 km/h and low visibility. A violently rotating column of air in contact ...
Thursday, January 28, 2016 by LOVE

Science
When water droplets in a cloud combine, become too heavy, and fall to the ground, you are experiencing? Evaporation. Condensation. Precipitation. (MY ANSWER) Transpiration.
Thursday, January 28, 2016 by LOVE

Science
What would be a great title for this question.... Which food will mold the fastest??
Thursday, January 28, 2016 by Utash

Science
A mixture of sugar and water can be separated by _________________. Choose all that apply. (2 points) using a magnet boiling the mixture •• evaporating the mixture•• using a filter Correct me if I'm wrong!!
Thursday, January 28, 2016 by Vanessa

maths science and geography
in a geometric sequence,the fifth term is four times the third term,and the second term is 4.if r<0 determine the value of r,the common ratio
Thursday, January 28, 2016 by thabang

Science
Check my answers!! Plz 1. What would happen to an object if the force of gravity on Earth was decreased by half? (1 point) Its mass would decrease. Its weight would decrease.* Its density would decrease. Its volume would decrease. 2. Which of the following represents a ...
Thursday, January 28, 2016 by Vanessa

Science Help!
Long hair is recessive in cats. Which of the following Punnett squares shows a cross that would result in the probability that 75% of the offspring will have short hair?
Thursday, January 28, 2016 by Please help!

Science
In pea plants, purple flowers are dominant over white flowers. Which Punnet square correctly shows the cross of a plant with white flowers and a plant that is heterozygous for purple flowers? A. Aa,Aa, aa, aa B. Aa,Aa, Aa,Aa C. AA,Aa, Aa,aa D. AA,AA, Aa,Aa
Thursday, January 28, 2016 by Please help!

Science
3. Through which process will metamorphic rock and igneous rock change into sedimentary rock?
Thursday, January 28, 2016 by LOL :)

science help
What is a genetic mutation? A:the process of decreasing chromosomes numbers to half of what the parent cell has. B:the copying of DNA to form identical daughter cells. C:a permanent change in an organisms genetic code. D: a fusion of egg and sperm cell to produce a new ...
Thursday, January 28, 2016 by reality check

Science
When you turn on a battery powered flashlight you transform... 1) heat into light chemical energy 2) chemical energy into electrical energy and light 3)heat into chemical energy and light 4) electrical energy and light energy into chemical energy
Thursday, January 28, 2016 by Hannah

Class 8 Science App
Hello, Have you seen the new app MarkSharks Class 8 Science? I like it a lot.It's very interactive and makes learning fun. Please try it and tell me what you think. You can download on the Google Play Store and use it on any android device
Thursday, January 28, 2016 by Avani

Science
Hello, Have you seen the new app MarkSharks Class 8 Science? I like it a lot.It's very interactive and makes learning fun. Please try it and tell me what you think. You can download it here and use it on any android device.
Thursday, January 28, 2016 by Avani

maths lite.life science.agric.afrikaans
is it possible for me to become a medical docter without pure maths but life science??
Wednesday, January 27, 2016 by TSHIRELETSO

science
if the canoe accelerates from 0 to .8 m/s in .2 s, what is the acceleration
Wednesday, January 27, 2016 by Anonymous

Science Plzz correct me!!!
What would happen to an object if the force of gravity on Earth was decreased by half? (1 point) Its mass would decrease. Its weight would decrease.* Its density would decrease. Its volume would decrease. 2. Which of the following represents a heterogeneous mixture? (1 point) ...
Wednesday, January 27, 2016 by Samantha

Science
what can fossils tell you about organisms and environments of the past?
Wednesday, January 27, 2016 by Avery/connexus

Physical Science
QUESTION---Which waves have wavelengths longer than those of visible light? MY ANSWER--Infrared light, microwaves and radio waves have wavelengths longer than visible light. Radio waves have the longest wavelength. Are there any others?
Wednesday, January 27, 2016 by cookiemonster

science
Scientists earlier believed that the lowest measurable temperature is the freezing point of ice. However, modern scientists believe that temperatures below the freezing point of ice can also exist. What best accounts for these different opinions? scientists propose ...
Wednesday, January 27, 2016 by Oscar

Science
1. What would happen to an object if the force of gravity on Earth was decreased by half? (1 point) Its mass would decrease. Its weight would decrease.* Its density would decrease. Its volume would decrease. 2. Which of the following represents a heterogeneous mixture? (1 ...
Wednesday, January 27, 2016 by Samantha

Physical Science
I am having trouble coming up with an answer to this, and I can't seem to find it in my textbook....can I get a little help? QUESTION---Explain why the speed of sound is faster in solids than in gases
Wednesday, January 27, 2016 by cookiemonster

Physical Science
QUESTION GIVEN---Thermal conductors don’t have to be hot to transfer heat. According to Ch.16, explain a situation when an ice cube would still transfer heat to another object it is in contact with. MY ANSWER---Because, the ice may be trying to transfer cold, but if the ...
Wednesday, January 27, 2016 by cookiemonster

Science
Beach sand contains plenty of the mineral quartz. Why should you not put your plastic sunglasses down on the sand at the beach?
Wednesday, January 27, 2016 by Anonymous

science
why does the sun appear to move westward across the sky during the day? a) because earth rotates to the east b) because earth rotates to the west c) because the sun moves in a westerly direction d) because of the way you are looking into the sky
Wednesday, January 27, 2016 by need help

Science
Two objects with charges of +1.0 c and -1.0 c are separated by 1.0km. Find the magnitude of the force that either charge exerts on the other.
Wednesday, January 27, 2016 by Alana

science
after striking the floor a ball rebounds 4/5th of the height from which it has fallen find the total distance travelled before coming to rest considering its dropped from 100m
Wednesday, January 27, 2016 by lovely

Science HELP!
2:What is the genetic code? A:The order of amino acids in proteins makes up the genetic code. B:The order of amino acids in mRNA makes up the genetic code. C:The order of nitrogen bases in tRNA makes up the genetic code. D:The order of nitrogen bases in DNA makes up the ...
Wednesday, January 27, 2016 by reality check

science
2. which of the following statements about the inner planets is true ? ( 1point ) A. they all have rings b. they have all abundant liquid water c. they all have many moons d. they are small and have rocky surfaces
Wednesday, January 27, 2016 by Adri help ASAP

science
what will be the pH and normality,when 33.6liters of HCl having 1.179 s.g. and 36%concentration is mixed with 736 liters of distilled water
Wednesday, January 27, 2016 by Ashok

Science
What will be the pH and Normality when 33.6 liters of HCL having 1.18 s.g.and 36% concentration
Wednesday, January 27, 2016 by Ashok

Science
A tank which is raised above the ground level, has a hole in its flat base, through which water flows and falls to the ground below. If the depth of water in the tank is 0.5 m and the tank base is 0.7 m above the ground, what is the fluid velocity (u) (m/s) just before it ...
Wednesday, January 27, 2016 by Chris

science & technology
when a body immersed in water from spring balance and shows 100gm weight loss. what is the weight of the body in water? 2)what is the weight of the body in air? 3)what is the upthurst on the body? 4) what is the volume of the body? give reason
Wednesday, January 27, 2016 by devtanu

Science
Which direction will a positive charge move if it is placed in the electric field surrounding a proton? Which direction will a positive charge move if it is placed in the electric field surrounding an electron?
Tuesday, January 26, 2016 by Denise

science
formula for kinetic energy?
Tuesday, January 26, 2016 by ellen isabel

Science
If a dune moves 40m a per year, how far does it move in 1 day
Tuesday, January 26, 2016 by Olivia

Science
Mario and sheen a were thirsty after a long bike ride, so they stopped to get a glass of lemonade. Their friend Andy was selling lemonade. He poured the lemonade into the two glasse. Before they start drinking sheena who had the shorter glass complained that she had paid the ...
Tuesday, January 26, 2016 by Ioanna

Science
How Andy could prove his two customers got the same amount of lemonade
Tuesday, January 26, 2016 by Ioanna

Science
A body initially at distance given an acceleration of 12/s2 (squared2 ). Find the velocity after it travelled 205. Q2. A body moving in linear motion start with an initial acceleration after 205 was 12m/s2. What's the velocity at this instance?
Tuesday, January 26, 2016 by Dorothy

Science
What are some every day uses that have the same function as Golgi Bodies?
Tuesday, January 26, 2016 by Evie

science
A box is placed on rough surface.it has a normal force of magnitude 120N.a force of 20N applied to the right cannot move the box.calculate the magnitude and direction of the friction forces
Tuesday, January 26, 2016 by nkule

SCIENCE
How does gravity affect growth
Tuesday, January 26, 2016 by STEVIUM

Science
An electromagnet in a galvanometer A. Increases the voltage in a circuit B. moves a pointer along a numbered scale in response to a current. C. induces an electric current. D. increases the current in a circuit. I got A, but apparently that is wrong....a little help?
Tuesday, January 26, 2016 by Mirabella

Science
Two objects with charges of +1.0 and -1.0 are separated by 1.0km. Find the magnitude of the force that either charge exerts on the other.
Tuesday, January 26, 2016 by April

Science
If the current in a wire is directed upward, what is the direction of the magnetic field produced by the current? A. counterclockwise B. clockwise C. in the same direction as the current D. in the opposite direction to the current D?
Tuesday, January 26, 2016 by CookieMonster🍪

Physical Science
A ferromagnetic material is A) always a magnet B) a magnet if it's domains are aligned C) a magnet if it's domains are not aligned D) never a magnet I think it is A....
Tuesday, January 26, 2016 by Eliza

Science/ela
how and why do theories change .150 words rflect on pluto.i bet no one person can answer this
Tuesday, January 26, 2016 by Charlie Shuler

Science
what are 6 contributions to pluto being demoted .I need date and names of the people
Tuesday, January 26, 2016 by Charlie Shuler

Science
a man runs a distance of 197.5 km in 200 minutes and he reduced his speed by 5 kmph in every 30 minutes. how much distance he will cover in 1 hour of his journey
Tuesday, January 26, 2016 by Raj

Science
How much weight of a 50 kg boy who's pushing a 30 kg crate?
Tuesday, January 26, 2016 by Ranaa

Science
A ferromagnetic material is A) always a magnet B) a magnet if it's domains are aligned C) a magnet if it's domains are not aligned D) never a magnet I'm pretty sure it's A....
Tuesday, January 26, 2016 by Eliza

Science
Which of the following determines the type of biome classification that will be made for a particular region? A.climate B.size C.mineral deposits D.number of human settlements* Thank you for the help
Tuesday, January 26, 2016 by Princess

science(physics)
the no of wave in 6cm of vacum is same as that of no of wave in xcm of medium refractive index of given medium is 3/2 find the value of x
Tuesday, January 26, 2016 by Anonymous

Physical Science
You drop a water balloon off of a tree branch, and you time the drop time at Δt = 1.16 sec, from the instant you drop it to the instant it impacts the sidewalk. What is the height of the tree branch?
Monday, January 25, 2016 by John

Fourth grade math - math book PearsonRealize
Homework 6-3 (1) Kareem has 216 role-playing game cards. His goal is to collect all 15 sets of cards. There are 72 cards in a set. How many more cards dose Kareem need to reach his goal? (2) Nichole has $9 to spend on cards. She finds friends with the same amount of money to ...
Monday, January 25, 2016 by E

Science
Explain why some proteins are made by nearly all cells and give two examples
Monday, January 25, 2016 by Anonymous

science
Humans have looked at planets
Monday, January 25, 2016 by kenneth

science
A fairy tale about chloroplasts invasion and got into animals
Monday, January 25, 2016 by ayesha

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