Saturday
December 10, 2016

Homework Help: Science

Branches of Science

Recent Science Questions

maths literacy, life science, tourism, geography
Which career path should I take
Saturday, December 10, 2016 by katlego

maths literacy, life science, tourism, geography
I want to know what opportunities can I get with these subjects
Saturday, December 10, 2016 by katlegl

Science
Ms.Sue can you hit me with a few questions and answers for studying
Friday, December 9, 2016 by Lesson 4: Plate Tectonics

Science
A car is moving from rest .After 10 sec its wheel rotate 360 times in 1 minute. If the radius of the wheel is 50 cm, then find (1) angular acceleration and (2) angular velocity after 30 sec
Friday, December 9, 2016 by Pabitra

science
how do altitude and latitude affect desert climate
Friday, December 9, 2016 by will

Science
the amount of pollution produced by cars was measured for cars using gasoline containing different amounts of lead. What is the independent variable
Friday, December 9, 2016 by Anonymous

Algebra
My science class is pretty small. There are just 18 students in the class. My teacher, Mr. Burnett, has an unusual system for picking lab partners. He has given each student a number from 1 to 18, and on lab days, he pulls two numbers out of a bag to match people up. During ...
Thursday, December 8, 2016 by Chioma

Science
To become more stable an atom that has two electrons in its outer energy level will gain two electrons A.) True B.) False That false correct?
Thursday, December 8, 2016 by Megan

Science HELP PLZZZ
What Environmental Pressures Exsists Now That May Be Shaping The Human Species. PLEASE HELP THANK YOUU
Thursday, December 8, 2016 by Gracelyn

Science
I have been thinking about this and really cannot think of a good answer plz help. What environmental pressures in the past do you think we're most important in shaping the human species as it is today? Thank you!
Thursday, December 8, 2016 by Izzy

science
A car slows down from a speed of 20m/s to rest in 25 seconds.Find its acceleration.
Thursday, December 8, 2016 by Dan

Science
Where can I find a pie chart that shows the percentage of resources used to generate electricity in the United States in 2015?
Thursday, December 8, 2016 by Kevin

Science
Describe the flow of blood to the human body, including through each of the four chambers of the heart. Explain how the blood changes as it moves through the various locations in the body.
Thursday, December 8, 2016 by PLEASE HELP ME!

Science
The force of gravity on an object on the surface of Mars is less than the force of gravity on an identical object on the surface of Earth. Which of the following explains why this is true?
Thursday, December 8, 2016 by JP

science
I need help planning a space trip
Thursday, December 8, 2016 by Jessica

Science
What is the result of c6h5ch2cooh +H^+/KMnO4
Thursday, December 8, 2016 by Priya

Science physics
How would the voltage output be affected if the armature is made to spin faster?
Thursday, December 8, 2016 by Anonymous

Science
A solution has been prepared by dissolving 0.63 g of HNO3 in 100 ml.What is its pH value ?
Thursday, December 8, 2016 by Anindita

Science
Which pair of states is most likeley to have a similar climate? Oregón arizona? Virginia and North dokota? Ohio and florida? Kansas and missouri?
Wednesday, December 7, 2016 by Ericka

science
i need a acrostic poem for the word eukaryotic
Wednesday, December 7, 2016 by madison

Science
Bb is an example of an organism's ______. "Bb" is from Punnett square
Wednesday, December 7, 2016 by Matt

Science, please help!!
I only have two questions, thank you! One difference between a point mutation and a chromosomal mutation is that ____ A. A point mutation affects the DNA of more genes than a chromosomal mutation B. A point mutation can involve a insertion or deletion, but cannot result in a ...
Wednesday, December 7, 2016 by PoPo

Science
Recall from previous activities in this lesson which era is sometimes referred to as the Age of Mammals. Locate and click on this section of the geologic time scale, and list the other possible names that could have been used to describe this era, and why.
Wednesday, December 7, 2016 by Anonymous

Science
Place the following words into the illustration below : gametes, sporophyte, gametomphyte, and zygote. explain how the terms are related
Wednesday, December 7, 2016 by Meme

Science
Write the ionic equation for dissolution and the Ksp expression for PbC12.
Wednesday, December 7, 2016 by Tammy

Science
I can dispense 300 liters of liquid continuously in one hour from a given temp. of 22*c down to 7*c. (delta T=15) How many liters and in what time can I dispense from a temp. of 24*c down to 3*c ? (delia T=21)
Wednesday, December 7, 2016 by Peter

science
What process forms high non-volcanic mountain ranges? A. One tectonic plate is splitting apart into two plates. B. Two tectonic plates are colliding and pushing together. C.One tectonic plate is sliding past another tectonic plate. D. Two tectonic plates are colliding and one...
Wednesday, December 7, 2016 by crywolf

Science
1) What physical features do producers and consumers have to help them survive in their environment
Tuesday, December 6, 2016 by Anonymous

Science
why are lunar rocks used to determine the age of a earth.
Tuesday, December 6, 2016 by Sincere Boxley

Science
What are examples of first, second and third level consumers in the Chesapeake Bay?
Tuesday, December 6, 2016 by Anonymous

Science
Two birds collide in midair. Before the collision, their combined momentum was 88 kg•m/s to the west. What is their combined momentum after the collision? A. 88 kg•m/s east B. 88 g•m/s north C. 88 kg•m/s down D. 88 kg•m/s west
Tuesday, December 6, 2016 by Lisa

science double check answers
1.Asteroids in our solar system are a)planets b)comet remains c)found in an asteroid belt** d)pieces of ice 2.Which of the following would not be found on the electromagnetic spectrum? A)The wavelengths of electromagnetic radiation B)The frequency of electromagnetic radiation ...
Tuesday, December 6, 2016 by katrina

science
A 33.1 kg crate rests on a horizontal floor, and a 69.0 kg person is standing on the crate. Determine the magnitude of the normal force that the floor exerts on the crate.
Tuesday, December 6, 2016 by Anonymous

Science PLEASE HELP
Explain how gravitational, electrical and magnetic force act on a maglev train?
Tuesday, December 6, 2016 by Ariana

Science. Answer Check
A kitchen ceiling light has five light bulbs on it. When one of the lights goes out, the other four bulbs stay lit. This is an example of a series circuit. True*** False
Tuesday, December 6, 2016 by Jay

Science. Answer Check
1. A student studying a circuit diagram of a lightbulb, battery, and a switch correctly identifies it as a closer circuit. In this diagram, The lightbulb would be a. an insulator b. on*** c. disconnected d. off 2. The focus of gravity on an object on the surface of Mars is ...
Tuesday, December 6, 2016 by Jay

Science
The ratio of mass of hydrogen to mass of oxygen in water is 1:4. How much oxygen will there be in 80g of water
Tuesday, December 6, 2016 by Wilson

Nature Science
If a typhoon hits an island without any person, is that a disaster?
Tuesday, December 6, 2016 by Liv

science
an object of size 3cm is placed at a distance of 15cm from a convex lens of focal length 10cm calculate the distance and size of image so formed what will be nature of image?
Tuesday, December 6, 2016 by yash

Science
What kind of heat transfer cause Earth's major wind patterns?
Monday, December 5, 2016 by Ng

Pre Algebra Review
Thirty-five students belong to the science club. This 1/4 the number in the 5 sections of the eighth grade. How many students are in the eight grade? How many in each section if each section has the same number of students?
Monday, December 5, 2016 by Bryan

Science
A boy pushes a box of mass 57 kg and it moves with an acceleration of 11.4 m/s2. what amount of force is the boy exerting on the box?
Monday, December 5, 2016 by Kayla

science
SHC and heat transfer Iron=390 To raise temperature of 0.5kg iron from 22 to 34°c
Monday, December 5, 2016 by leonie

Science
Explain the way that ammonia, salt, and water are a like. My answer: They are all a like because they are all acids. They all clean things. They also are all compounds.
Monday, December 5, 2016 by Ashlie

Science
What volume of a 2.00 M HCL solution can be prepared by diluting 0.350L of 14.0 M HCl solution?
Monday, December 5, 2016 by Dana

science
Gravitational force =mass x 9.8m/s2 what is the force of a polar bear weighing 1500kg?
Monday, December 5, 2016 by amanda

Science Physics
I don't understand how I would know what would happen if it collided or bounced, etc. How do I solve a question like this? Suppose the total momentum of two masses before collision is 100kg m/s. What is the total momentum of the two masses after they collide? 0 kg m/s 50 k...
Monday, December 5, 2016 by Jake

science
what city goes below sea level first miami or new orleans?
Sunday, December 4, 2016 by Anonymous

Science
. What is the freezing point of a solution that contains 3.5 mol of the ionic solid BaCl2 dissolved in 500. grams water?
Sunday, December 4, 2016 by Raam

science
what makes us cry while chopping the onion?
Sunday, December 4, 2016 by shall

enviromental science
which of these is a natural factor that affects the enviroment domestication oxygen resarch factories
Saturday, December 3, 2016 by lilnig

8th Grade Science
Which of the following best describes what causes the phases of the moon? A. The alignment of the sun, Earth and moon (I think it's this one) B. The speed of the moon around the Earth C. The speed of the Earth around the sun D. The alignment of the planets
Saturday, December 3, 2016 by Music Lover 14

Compter Science ASAP please
How do you check if the words exist in the sentence in Python? So far I have got... the_sentence = ("I love chocolate and chocolate loves me") sentence = the_sentence.split() print(sentence) sentence_1 = raw_input("Enter a word") def "word": if ...
Friday, December 2, 2016 by Reece

Science
A lead calorimeter with mass of 150g contains 200g of water. The calorimeter and water are in thermal equilibrium at a specific temperature. Two metallic blocks are placed into the water. One is a 50.0g piece of aluminum heated at 90 degrees celcius. The other has a mass of ...
Friday, December 2, 2016 by Anonymous

Science
A lead calorimeter with mass of 150g contains 200g of water. The calorimeter and water are in thermal equilibrium at a specific temperature. Two metallic blocks are placed into the water. One is a 50.0g piece of aluminum heated at 90 degrees celcius. The other has a mass of ...
Friday, December 2, 2016 by Angel

science
If a rope of lift breaks suddenly , the tensiin exerted by the surface of lift.
Thursday, December 1, 2016 by raunak

science
what is the specific gravity of a liter of water at 20 degrees celsius
Thursday, December 1, 2016 by tiffany

science double check answers
1. What is the alignment of the Earth, moon, and sun during a lunar eclipse? A)Earth, sun, moon B)Earth, moon, sun C)Sun, Earth, moon** D)Sun, moon, Earth I know that for a lunar eclipse the earth is in the middle, so i just wanted to double check 2.A scientific law A)can have...
Thursday, December 1, 2016 by katrina

science
Plants perform photosynthesis and respiration. Dead plants are broken down and become part of the soil. Which of the following matter do plants help to cycle through ecosystems?
Thursday, December 1, 2016 by caleb

Science
1.When the effects of the moon and sun work together, this is what kind of tide? A)Neap tide B)Fall tide C)Spring tide** D)New moon tide
Thursday, December 1, 2016 by katrina

science
1. What is the alignment of the Earth, moon, and sun during a lunar eclipse? A)Earth, sun, moon B)Earth, moon, sun C)Sun, Earth, moon** D)Sun, moon, Earth I know that for a lunar eclipse the earth is in the middle, so i just wanted to double check 2.A scientific law A)can have...
Thursday, December 1, 2016 by katrina

science
What happens if someone pulls the thermometer out, leaving the mouth of the flask open
Thursday, December 1, 2016 by alaw

Astronomy, Math, Science
If the Sun is at 57 degrees altitude at 12:18 pm on Sept. 1, 2016 and I held a pen that is 7 inches long in the sky, how long would its shadow be?
Thursday, December 1, 2016 by Charlotte

Science
Which of the following best describes the process in which surface water becomes water vapor? A. condensation B. Precipitation C. Percolation D. Evaporation My answer A
Thursday, December 1, 2016 by help me please

science
Which of the following is an example of an environment pressure
Thursday, December 1, 2016 by tatiana

SCIENCE-CHEMISTRY
Find the mass (kg) of a metallic block in the form of a cube 30cm on the side,if its density is 5.6kg/L.
Thursday, December 1, 2016 by Ericca

Science
The engine of a motorcycle can produce a maximum acceleration 5 meters per second square. Its brakes can produce a maximum retardation 10meters per second square. What is the minimum time in which it can cover a distanceof 1.5km
Thursday, December 1, 2016 by Kunal

Science
Solution of question The work done by the heart if it's beats 72times per minute
Thursday, December 1, 2016 by Muskaan Sachdev a

science
1.A scientific law A)can have only one known exception B)can have any number of exceptions as long as we know about them ** C)might have many exceptions we don’t know about D)has no exceptions 2.Sunspots are A) solar storms that can interfere with communication satellites...
Thursday, December 1, 2016 by katrina

Science
If you place a grape in a large amount of sugar water, what will happen to it and why?
Wednesday, November 30, 2016 by Owen

science
1.A scientific law A)can have only one known exception B)can have any number of exceptions as long as we know about them C)might have many exceptions we don’t know about D)has no exceptions*** 2.Sunspots are A) solar storms that can interfere with communication satellites...
Wednesday, November 30, 2016 by katrina

Science chemistry please help
Determine the number of moles of oxygen in 1 mol of dinitrogen tetraoxide
Wednesday, November 30, 2016 by Farhin

Science chemistry
Determine the number of moles of oxygen in 1 mol of dinitrogen tetraoxide N2O4= N 2×14.01g/mol= 28.02g/mol O 4×16.00g/mol= 64.00g/mol N2O4= 92.02g/mol I can't get the right formula to solve the rest. Please help and thank you
Wednesday, November 30, 2016 by Farhin

science
I'm stuck on the following questions 1)The geocentric model of the universe states that the Earth is the center of the universe. This is an example of a A)scientific conclusion B)pseudoscience C)scientific law*** D)Scientific method Through process of elimination i know ...
Wednesday, November 30, 2016 by katrina

Science
Sperm and eggs are found in different parts of plant. Explain why it is important for these cells to unite and describe some factors in a environment that help unite them?
Wednesday, November 30, 2016 by regina

science
Take 1mL of 1M NaCl solution, and add 9mL of water. Then take 10microL of the diluted solution and add 40microL of water. What is the dilution? And what is the final concentration of NaCl? So I see how this is a 2:1 dilution, but I am having a hard time figuring out the final ...
Wednesday, November 30, 2016 by Alli

Science
which of the following statements is true as the moon goes from new moon to full moon phase? (2 points) A:We see more of the lighted side of the moon B:We see less of the lighted side of the moon C:The time it takes to go from new moon to full moon is 2 weeks D:The time it ...
Wednesday, November 30, 2016 by Kali

science
most of the life of a cell is spent in a period of growth and development called_____.
Wednesday, November 30, 2016 by audrey

Science physics
A ship is heading north at 15km/h in a tide moving at 6km/h westward. Determine the magnitude and direction of the resultant velocity of the ship.
Wednesday, November 30, 2016 by Anon

Science Physics
Derive an expression for kinetic energy of an object mass m moving with uniform velcoity v what happens to the kinetic energy of a body if its velcoity is halved
Wednesday, November 30, 2016 by Danial

Science, physics
A ship is heading north at 15km/h in a tide moving at 6km/h westward. Determine the magnitude and direction of the resultant velocity of the ship. I can't answer it because I don't get the formula. And please give me the formula. I need the answer later. I'll wait...
Wednesday, November 30, 2016 by Zablanity

Science
Derive an expression for kinetic energy of an object mass m moving with uniform velcoity v what happens to the kinetic energy of a body if its velcoity is halved?
Wednesday, November 30, 2016 by Danial

science
The apparent weight of cube in liquid with relatibe density 0.9
Wednesday, November 30, 2016 by rajat

Engineering science
A steel cylinder contains an ideal gas at 27°C. The gauge pressure is 140kPa. If the temperature of the container increases to 79°C, what is the new gauge pressure?
Wednesday, November 30, 2016 by Shah

Science
It takes a force of 22 N to push a 10 kg box horizontally with a constant velocity over concrete. What is the coefficient of kinetic friction between the box and the concrete? My guess is 10 kg/22 N = 0.4545 but I'm not sure if you have to take in account vertical forces ...
Wednesday, November 30, 2016 by Fred

science
A ray of light travelling in air strike the water surface at an angle of 40° calculate the refractive index of water if angle of refraction is 29°
Wednesday, November 30, 2016 by Shivani singh

Science
The lung is to the respiratory system as the ____ is to the integumentary system. A) heart B) kidney C)hand D)brain B
Wednesday, November 30, 2016 by Hayden

Science
A new geosynchronous satellite needs an orbit of 35.7 km . The mass of the Earth is 5.97x 10^24 Kg and the radius of Earth 6.4 x 10^3 km. The mass of the satellite is 200 Kg. What velocity will it need to achieve that orbit
Tuesday, November 29, 2016 by Boberto

science
what does the slope of a electric force vs. 1/R^2 graph represent?
Tuesday, November 29, 2016 by jon snow

Science
A new geosynchronous satellite needs an orbit of 35.7 km . The mass of the Earth is 5.97x 10^24 Kg and the radius of Earth 6.4 x 10^3 km. The mass of the satellite is 200 Kg. What velocity will it need to achieve that orbit?
Tuesday, November 29, 2016 by Boberto

Science
The Sun exerts a gravitational force of 3.56 x 10^22 N on Earth. The mass of the Sun is 2.0 x 10^30 kg. The mass of the Earth is 6.0 x 10^24 kg. If we assume the Earth has a circular orbit of 1.5 x 10^11 m, what is the velocity needed for Earth to remain in orbit?
Tuesday, November 29, 2016 by Boberto

Science
A car completes a half of a circular track that has a radius of 10 m. What is the distance traveled by the car? What is the displacement of the car?
Tuesday, November 29, 2016 by Rose

Science , Biology
Which creatures live on the energy of the Sun? Angel fish Suquirrel fish Sea urchins Porcupine fish Octopus
Tuesday, November 29, 2016 by AM

Science , Biology
Is Atlantic spadefish Nocturnal or Diurnal? Carnivore, Herbivore, Autotroph? Is Porcupine fish Carnivore, Herbivore, Autotroph? Please give me informationsss!!
Tuesday, November 29, 2016 by A.

science
In the following equation , 417.96 g of Bi reacts completely with 200 g of F . How many grams of BIF (to the third power) are formed?
Tuesday, November 29, 2016 by chels

Science
Take 1mL of 1M NaCl solution, and add 9mL of water. Then take 10microL of the diluted solution and add 40microL of water. What is the dilution? And what is the final concentration of NaCl? So I see how this is a 2:1 dilution, but I am having a hard time figuring out the final ...
Tuesday, November 29, 2016 by Alli

science (ASAP)
what does the notation TT mean to genetics
Tuesday, November 29, 2016 by Miranda

Science
What is the result of c6h5ch2cooh +H^+/KMnO4
Tuesday, November 29, 2016 by Priya

science
in evolutionaly terms, RNA is though to have preceded proteins and DNA.
Tuesday, November 29, 2016 by qq

science
A car is moving at a speed of 72 km/hr. The radius of its wheels is 0.25m. If the wheels are stopped in 20 rotation by applying brakes, then angular retardation produced by the brakes is:
Tuesday, November 29, 2016 by Nancy

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