Science

Recent Questions

Science
A boat is floating on top of the water in there arrows pointing down bouncing off of the boat on the ocean floor and arrows are bouncing off the boat on the floor back up to the back of the boat. What is happening in this diagram

More science help!!
A line of volcanoes occurs along the western coast of South America. Based on the information about plate movement on the map below, which process explains the formation of these volcanoes? A. subducting of one plate under the other causing melting of the lower plate B. ...

Science Help
A satellite image shows a portion of the Namib Desert in Africa. This is an ancient, sandy desert with dunes that can be up to 305 m tall. The Namib Desert extends inland from the Atlantic Ocean between 80 km and 200 km and receives only 5 mm to 76 mm of rain each year. A ...

Science
A golfer hits a golf ball with a club. The mass of the ball is 0.05 kg. The ball accelerates at 2,000 m/s2. What is the net force, to the nearest newton, that accelerates the ball? I know the answer is 50, but I don't know how to do it!

science
how many cells in the human body?

science help
Last one. Idk abt this one The picture above shows two phenotypes of peppered moths (dark and light). The dark moth has an advantage over the light moth because it can blend in with its environment better. As a result, the darker moth is more fit to survive, reproduce and pass...

Science :))
Earth's inner core is responsible for Earth's ... Magnetic field *** Ocean currents Volcanic activity Tectonic plate movement _____ make up ______ which make up ______. Organs, tissues, cells Cells, organs, tissues Tissues, cells, organs Cells, tissues, organs **** While on a...

Science! Please help!
Select all that apply: Which issue(s) followed Chernobyl's nuclear meltdown? Select all that apply. Radiation/ Radioactive waste *** Loss of farmland *** Death rates exceeded the birth rates Mutation rates increased in both local wild life and human populations 8. Where did ...

Science
If a black coat that is coat dominant over a red coat but is heterozygousfor coat color and breeds with a red cow, what percentage of their offsprings would be black coat

Science -- Check my answers!
Which of the following has the most significant impact on the environment? Natural Disasters Humans *** Ecosystems Carbon Dioxide Which step of the scientific method applies to the following scenario? Rick wants to know if rising carbon dioxide levels in the atmosphere have an...

Science
Animals from the deepest places on Earth have been found with plastic in their stomachs. The discovery confirms fears that man-made fibers have contaminated the most remote places on the planet. The study was led by academics at Newcastle University. It found that animals from...

Science
Why is Earth is the omnipresent conductive surface?

science
A flask of volume V contain some mercury it is found that at different temperature the volume of air inside theflaskremains the same. If gamma g and gamma m are the coefficient of cubical expansion of glass and mercuryrespectively. Find the volvolume of the mercury in the flask .

@ in need of science
I deleted your 25 questions. You didn't post any of your ideas or answers. Did you really want us to answer all of these questions for you?? If you'd like, post no more than five of these questions, along with your ideas about the answers. We'll be glad to help you then.

math
The books for Mathematics, Geography and Science in a school are in the ratio 5:7:8. There is a proposal to increase these books by 40%, 50% and 75% respectively. What will be the ratio of the increased books? #Please anyone who can help me out with the clearly solution#

science
Computers are built with elements that are average conductors of heat. What other properties do these elements have? •brittle and dull •dull and malleable*** •shiny and brittle

Science
What is Northern Light?

science
What volume of 3.00M HCl in liters is needed to react completely (with nothing left over) with 0.750L of 0.400M Na2CO3?

Science
A 100 N force acting on a lever 2 m from the fulcrum balances on object0.5 m from the fulcrum on the other arm what is the weight of the object. (In newtons)? What is the mass (in kg)?

science;chem
The hydrolysis of ethyl acetate (CH3COOC2H5) by sodium hydroxide yields ethanol (C2H5OH) and sodium acetate (NaO2CCH3) by the reaction shown, which follows second order kinetics. In an experiment 500 mL of 0.1 M ethylacetate in water is mixed with 500 mL of 0.1 M NaOH in water...

Science Help. :)
Describe the flow of blood in the human body, including through each of the four chambers of the heart.Explain how the blood changed as it moves through various locations in the body. Please, Don't Give me answers just explain :) Thank you

Science
1kg of water contained in a metal container is heated with 1me immersion heaterif the temperature roses from 25c to 45c in 100s what is the average rate of heat loss to the surroundings from the container during this time?

Language
The Latin root man means "hand" what is the meaning of the word manual in the following sentence. Manual laborers used hammer and nails to build the roof of dr.meehan's new house. done by machines done by humans done by tools THIS ONE don by roofers 2. Which of the following ...

Science
2C2H2+3O2—4CO+2H2O+Heat rasaynik abhikriya Kay aahe

Science - Climate change
What does this paragraph mean? Why is the air sinking over the desert and how does it rise with rain systems thousands of kilometers away? In fact, it has been calculated that the Sahara Desert actually loses more infrared radiation than it gains solar radiation from the sun. ...

Science
I have reviewed the types of reactions but am still not sure what it is. Cs2+H2O arrow CsOH+H2 In the products, where is the H in CsOH coming from? What type of reaction is it?

science
What are the genotypes and phenotypes of monarch butterfly What are the genotypes and phenotypes of viceroy butterfly

science
how do decentralize goverment reduce environmental degradation

Science
2C2H2+3O2—4CO+2H2O+Heat rasaynik abhikriya Kay aahe

Science
How does the mass of a bowling ball that has been rolled down the lane affect the kinetic energy? A) The kinetic energy does not depend on the mass of the bowling ball. B) The kinetic energy is increases proportional to the mass of the bowling ball. C) The kinetic energy is ...

Science - Climate change
What does this paragraph mean? Why is the air sinking over the desert and how does it rise with rain systems thousands of kilometers away? In fact, it has been calculated that the Sahara Desert actually loses more infrared radiation than it gains solar radiation from the sun. ...

science
A sample weighing 1.25 mg containing a certain compound M (FW 292.16 g/mol) was dissolved in solvent in a 5.00 mL volumetric flask. A 1.00 mL aliquot was drawn up, placed in a 10.00 mL volumetric and diluted to the mark with solvent. The absorbance of this solution at 340 nm ...

Science
Jill is making lemonade. She mixes together some water, ice, lemon juice, and sugar. The lemonade is classified as a(n) _________. A) compound B) element C) mixture **** D) solution

Science
If a chemical reaction such as photosynthesis begins with 6 atoms of carbon (C), how many atoms of carbon (C) should be in the products? A) 2 atoms of carbon (C) B) 3 atoms of carbon (C) C) 6 atoms of carbon (C)**** D) 12 atoms of carbon (C)

Science
If water with the mass of 15.0 grams is heated into water vapor in a closed system such as a closed glass jar, what is the mass of the gas after the water completely vaporizes? A) 13.5 grams B) 15.0 grams C) 16.5 grams D) The mass cannot be determined without knowing the volume.

Science
A cold cast iron skillet is placed onto a stove top. When the stove is turned on, the skillet becomes very hot. Why does the skillet become hot? A) The skillet is losing energy (heat) to the stove. B) The stove is gaining energy (heat) from the skillet. C) The skillet is ...

Science
A solar panel and example of converting light energy to electrical energy?

Science
Evidence of a chemical change does NOT include A) evolving a gas. B) change in color. C) change in shape.*** D) change in temperature.

Science
How many atoms of zerconium are there in 1 gram of it?

Science
Which of the following is NOT a function of the skeletal system? 1)supports the body 2)works with other body systems to allow movement 3)manufactures new blood cells 4)sends signals to the brain I think #3. Can you check? Thanks

Science - Climate change
This is from my textbook, about sea breeze. "A water breeze occurs during the day when the solar energy warms up the land faster than the nearby water. Remember that water is a better heat sink than land, and so can absorb a lot of energy without getting hot. " In class we ...

Science
Which of these is an example of how an abiotic factor affects a biotic factor? 1 Taming of a wild animal, like Cockatoo, for commercial purposes. 2. A fungus infects the population of frogs causing a population decline 3. An increase in rainfall leads to an increase in frog ...

Science
Which of these is a natural factor that affects the environment? Domestication Oxygen Research Factories My answer is oxygen

Science
If there's 1 gram of nitrogen (N2) at 1 L and 1 gram of hydrogen (H2) at 1 L, would the pressure of H2 be greater than the pressure of N2? And would the density of H2 = the density of N2 at these conditions? There would be more moles of H2 than N2, but the same mass and volume...

SCIENCe
1.name the componets of the respiratory system in the order incoming encounter them during breathing. 1.trachea,pharynx,larynx,alveoli,bronchi​ 2.bronchi,larynx,alveoli,trachea,pharynx​ 3.larynx,trachea,bronchi,pharynx,alveoli​ 4.pharynx,larynx,trachea,...

Science
What would be the best metric unit for measuring how far a horse can run in 10 seconds?

Science
What can scientists learn from the rate at which radioactive elements decay?

science
how electron and proton can deflect with same radius

Science-9
The weight of the nucleus is known as the? atomic mass?

Science
What would happen to an object if the force of gravity on earth was decreased by half A. It’s mass would decrease B. It’s weight would decrease**** C. It’s density would decrease D. It’s volume would decrease

Science
What was the particular time period when earth wasn't solid and why isn't it considered a part of Earth's geological history?

Statistics and probability
A science class has four girls and four boys in the seventh grade and three girls and five boys in the eighth grade the teacher randomly selects a seventh grader and an eighth grader from the class for competition what is the probability that the student she selects are both boys

Science
Use Ohm’s Law to determine the resistance in a circuit if the voltage is 12.0 volts and the current is 4.0 amps. A.8.0 ohms B. 48 ohms C.3.0 ohms** D.12 ohms

Science
Granite lasts a long time when it is used for building areas where a. Repeated freezing and thawing is common b. The climate is mostly cool and dry c. Acid rain is common d. The climate is hot and rainy I believe the correct choice is b? Also does anyone have extra links to ...

Science Ecology
Comparing my answer to the "suggested answer" in the back of the book. Q: Using an example, explain how convection currents are formed. My Answer: Convection currents are formed as a result of different densities in a fluid. For example, in a pot of water, when the water is ...

Science
Give an exception to this: Bad conductors of heat are also bad conductors of electricity".

Computer Science JAVA
Project 4 Introduction - the SeaPort Project series For this set of projects for the course, we wish to simulate some of the aspects of a number of Sea Ports. Here are the classes and their instance variables we wish to define:  SeaPortProgram extends JFrame o variables ...

Science
Would heavy snowfall in the ogallala aquifer region affect the recharge of ghe aquifer over the long term?

Science
What is the primary land use in the ogallala aquifer area of the U.S?

science
Question: Why are "apparently" small changes in pH so important in Biology? Answer: pH levels are each a 10-fold change so a change by 2 is actually a change by 1000. pH determines certain characteristics in organisms that allow them to live in certain areas so an alteration ...

Science
Which represents the correct functional order (first to last) of the human digestive system? A) mouth→esophagus→stomach→large intestine→small intestine→rectum B) mouth→esophagus→stomach→small intestine→large intestine→rectum C) mouth→esophagus→small ...

Science
Which best explains why children often look like their parents? A) Traits, or characteristics, are passed on to offspring from parents. *** B) Before being born, characteristics of offspring are randomly formed. C) Babies begin to look like their parents as their features ...

Science helppp
Through the miracles of medicine and technology, researchers have had some success with growing and transplanting hollow, relatively simple organs such as tracheas and bladders. Building organs like the heart and lungs have proved to be much more difficult. . Doctors have had...

physical science
when a physical change in a sample occurs which of the following does not change? a. shape b. temperature c. volume d. composition d?

physical science
which of the following are pure substances? a. solutions b. compounds c. homogeneous mixtures d. colloids A?

Science
How can DNA sequences, Stages of Development and Body Structures be used as evidence of evolution?

Science
How does one read a cladogram?

Science
Factors that affect natural selection and evolution.

Science
A hormone is under negative feedback regulation. This hormone stimulates water retention by the body. Which of the following will happen if water levels in the body get too high? 1) hormone levels will increase 2) hormone levels will decrease 3) antibodies will form 4) the ...

(One more science Question)
This Is the last one I'm stuck on, I promise, I'm caught between c and d, I think... C right? Because Even If solar power Isn't available at night, Or when It's cloudy, there are ways of storing the energy you get, Right? Which of the following is a problem with using solar ...

I have a few science Questions I need checked, Plz
Hi Guys, so, I only have 2 questions, But, I'm a little confused on all of them, could someone check for me One of the ways humans can preserve biodiversity Is habitat destruction habitat preservation*** habitat fragmentation poaching A country comissioner wants to reduce the ...

Science
HOW to convert ethanol into chloroform

math
A student is building a diamond-shaped kite in his science class. To construct the kite, the student has assembled four congruent right triangle pieces of fabric to form the diamond. The diagonals of the kite are perpendicular to one another. If angle ABC on the side of the ...

Science
Please explain the outcome of heat transfer between the hotter inner liquid (red) and cooler outer liquid (blue).

Science
Explain why radiation is happening around the flame while convection only upward.

science
What happen to the water in the basin when you placed a drop of water?

Science Chemistry
if 4.35 kj of energy are needed to heat a sample of water from 62C into steam at 100.0C what is the mass of the sample

science
someone please help with this chemistry question. Describe what happened when Ag+ combined with Na^2CO^3. What does this indicated?

science 6th
What form of pollution, if any, does each energy source cause? How does the economy influence energy source choices? How does location influence energy source choices?

Science
A man wakes from sleep, hears a strange noise, becomes alarmed and runs downstairs. Which of the following describes the corresponding events taking place in his nervous system ? 1)sensory neuron>spinal neuro>brain>motor neuron 2)sensory neuron>brain>spinal cord...

Science
Which of the following sets of terms could be used in a description of the peripheral nervous system? 1)motor neurons 2)brain and spinal cord 3)motor neurons 4)sensory neurons and spinal cord I think #1. Can you check? Thanks.

Science
The human stomach is an organ that helps us digest food. The stomach is one of many organs involved in the process of digestion. Others include the esophagus, small intestine, pancreas, and gall bladder. What name is given to a set of organs that work together to perform a ...

Science
15.2% by mass solution of h2o2, density is 1.01g/ml then find the molarity of the sulution.

Science Help
4. When a fan is turned on, it changes electrical energy into ______ energy. A. motion*** B. magnetic C. gravitational D. electromagnet HELP ME

Math
There are 24 students in a science class. Mr. Sato will give each pair of students 3 magenta. 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? Write down an expression.

science
1. Under which of the following conditions would a fossil most likely form? (1point) a. A living thing dies and sediment is very slowly deposited on top of i’s body. b. A living thing dies and sediment quickly covers its body. <- c. A living thing dies and its skeleton is...

math/science
a car starts from rest and move at a speed of 30 kph after half an hour.what is the car's acceleration

Science
before you say "The answers are in your text" I don't have one this is based on memory and guessing. Welcome to the 2017 school system. 1. Objects with like charges ___________ each other while opposite charges ______________ each other. 2. The direction of an electric field ...

Physical Science A
What daughter product is produced when thallium–206, an isotope of thallium, undergoes beta minus (β–) decay?

HELP SCIENCE 8 A HELP PLEASE
1. Which of the following is true about the electric charges on the objects below? (A) The ball on the right has a Positive charge and the ball on the left has a negative charge.*** (B) The ball on the left has a Positive charge and the ball on the right has a negative charge...

Science
Lenticels are represent on __________ in plants

Science
A runner compels one lap around a 300-m oval track, returning to her staring position. What distance does she cover, and what was her displacement? Explain.

Science
Why does 1 hour and 15 minute is 1.25

SCIENCE
AN AIRPLANE TRAVELS 290 KM BETWEEN AUSTIN AND DALLAS IN 1 HOURS 15 MIN.WHAT IS ITS AVERAGE SPEED?

science
Classify the reaction between zinc and acetic acid.

Science
Still very confused 5. Darth Vader unleashed the power of the DARK SIDE (1225 watts) on the unsuspecting Jedi.If he did 727 joules of work how much time did it take? First I tried to divide it did not make sense then I multiple and did not make sense if I did multiple I would ...

Science
5. Darth Vader unleashed the power of the DARK SIDE (1225 watts) on the unsuspecting Jedi.If he did 727 joules of work how much time did it take? First I tried to divide it did not make sense then I multiple and did not make sense if I did multiple I would have to convert the ...

Science
5. Darth Vader unleashed the power of the DARK SIDE (1225 watts) on the unsuspecting Jedi.If he did 727 joules of work how much time did it take? First I tried to divide it did not make sense then I multiple and did not make sense if I did multiple I would have to convert the ...

science
In an experiment 4.5kg of fuel was completely burnt. The heat produced was measured to be 180,000kg. What is the calorific value of the fuel?

Science
The two variables of interest in this lab are: "percent change in mass" of bag and "sucrose molarity" in the bag solution. On a graph of these two variables, which would be the independent variable, and which would be the dependent variable?

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