Science

Recent Questions

science
If you had 100 mL of juice, how many milliliters would be fruit juice?

science
4.which of these statements best describes the relationship difference between minerals and rocks. 1.most minerals are made of rocks. 2.most rocks are made of minerals. 3.rocks are solid but minerals are not. 4.rocks are found on earths surface but minerals are not.

Maths, life science,business studies, EGD, LO and
Which career to choose with these subjects done in matric

Science
Meta and para isomers are more soluble in water than ortho isomer?

Science
If a car traveled a total of 300 km in 4 hours what is the average speed

Science
The water in a puddle has a mass of 1500 grams. The sun comes out and the puddle evaporates. How many grams of water vapor enter the air from the puddle?

Science
Use the terms atom and element to explain what makes silver and gold different

Physical Science
A 20.0-Ù resistor and a 45.0-Ù resistor in parallel are connected to a 120-V dc source. (a) What is (are) the current(s) through the resistors? current through the 20.0-Ù resistor: Incorrect: Your answer is incorrect. . A current through the 45.0-Ù resistor: Incorrect: ...

Science
If an atom has a mass number of 23 which of the following is always true

Science
Christina has a glass of water. Michael has a fruit juice drink. Both drinks are at room temperature, and both students add ice to their drink's. Condensation begins to on the outside of Christina's glass before Michael's. How can they state their observations as a problem to...

Science
Christina has a glass of water. Michael has a fruit juice drink. Both drinks are at room temperature, and both students add ice to their drink's. Condensation begins to on the outside of Christina's glass before Michael's. How can they state their observations as a problem to ...

Science
Christina has a glass of water. Michael has a fruit juice drink. Both drinks are at room temperature, and both students add ice to their drink's. Condensation begins to on the outside of Christina's glass before Michael's. How can they state their observations as a problem to ...

Science
What is the mass of a box pushed both left and right at 50N?

science help pls pls
Which of the following is typically associated with a reduction in photosynthesizing plants in a water supply? An increase in dissolved oxygen A decrease in dissolved oxygen An increase in phosphates A decrease in phosphates is it b

Science
You go rock climbing with a pack that weighs 50N and you reach a height of 30m. How much work did you do to lift your pack? A. 80 joules B. 1500 joules C. 20 joules D. 1.67 joules

Science
A car runs at a constant velocity of 15m/s for 300sec and then accelerates uniformly to a velocity of 25m/s over a period of 20s. This velocity is mantained for 300s before the car is brought to rest with uniform deceleratiom in 30s. Draw a velocity time graph to represent the...

science
A large drop of about 5 mm (3/16 in.) diameter reaches a maximum speed of about 9 m/sec."

luthayi high school. science
How can methanol be harmful to human if accidentically swallowed

Biology (High school science)
If non-nucleated cells of meristematic tissue are used for tissue culture, then growth rate will be : a) High b) Average c) Very low d) Growth may not take place. Please help!

science computer
The program will accept the final marks of a group of students in a class. The lecturer can choose '1' to finds the highest and lowest marks in the class. The lecturer choose '2' to find the average marks of that class. If user enter other number, message "wrong choice" will ...

Science
How to work out the weight on mercury Jupiter and Saturn

Science
When the right atrium contracts, the right ventricle always contracts simultaneously. left atrium always contracts simultaneously. left atrium always relaxes simultaneously. left atrium and left ventricle always relax simultaneously. Help

science
Can you unscramble these two words? ACGIJJ 2nd word is KMNPKSU

science
space craft is heading towards the sun which is located 150,000,000 km. away from earth at a speed of 17,000 km, per hour. what is the approximately to the nearest year how long will it take to arrive at the sun's surface? show work

Science
The solubility of potassium nitrate is 40 at 30 degree celcius. Calculate the mass of water required to make a saturated solution by dissolving 15 gram of potassium nitrate at that temperature. Could u guys help me to get answer of this question. Plz help me otherwise my marks...

Geography,maths lit,life science,physical science,xhosa,life orientation and english
Will i be able to do law with the following subject maths lit,geography,life science,physical science and english

Science
15. Which of the following factors is the most likely explanation for an energy deficit that results in exercise-induced exhaustion. A.Insufficient protein production B.Insufficient mitochondrial function. C.Impair urea elimination. D.Absence of oxygen transporters on the ...

Science
What is the main function of the lymphatic circulation is to A. transport hormones around the body B. provide immune function for protection C. provide a backup for systematic circulation D. transport nutrients and oxygen to cells I think B

Social studies
9.advances in science from the scientific revolution were applied to human affairs during the A.industrial revolution B.french revolution C.enlightment (MY ANSWER) D.age of exploration 10.which event led most directly to a decline in the political power of ancient greek city-...

Science
Referring only to the periodic table give the ionic charge expected of these representatives elements type your answers format 1+ 2 - Te Be Ba P Li Ga C At

science
Which of the following is not an example of potential energy? Chemical energy gravitational energy mechanical energy*** nuclear energy

Science
WHAT ARE ALL THE ELEMENTS TO THE PERIODIC TABLE!!! Thanks for the help!

Science
A rectangular piece of wood measuring 20cm by 5cm by 3cm weighs 900kg.Find the greatest pressure the piece of wood can exert if placed on a table.

science
a body with a mass of 40kg is at the point of sliding down an incline plane of 20degrees.calculate the external force required to pull the body up the incline plane

Science
Which type of energy in the bungee chord prevents the bungee jumper from hitting the ground after a jump? A. kinetic energy B. elastic potential energy *** C. magnetic potential energy D. thermal energy -- Side note: Please help. I am not asking for the answer, I'm simply ...

political science
The book has a chart listing the public approval of several things/people/events and compares it to the approval rating of Congress. Who/what has a LOWER approval rating than Congress? The IRS Paris Hilton All of these choices have a HIGHER approval rating than Congress U.S. ...

political science
What "celebrity" was a Congressional witness who testified with the help of Representative Duncan Hunter before the House Education Appropriations subcommittee in support of funding for school music programs? Question 8 options: Elmo Big Bird George Clooney Kermit the Frog

political science
Where might a member of Congress hold the floor indefinitely and thereby delay a vote on a bill which he or she objects (aka fillibuster)? The House The Senate Both the House and Senate Parliament

science help pls pls
Which of the following types of stars is cooler than an orange main sequence? In Graph A, the curve peaks at 800 nm, in the red section of the visible light spectrum. In Graph B, the curve peaks at 550 nm, in the green section of the visible light spectrum. In Graph C, the ...

science help pls pls
Which of the following is typically associated with a reduction in photosynthesizing plants in a water supply? An increase in dissolved oxygen A decrease in dissolved oxygen An increase in phosphates A decrease in phosphates pls help me

Physical science
ONE SECOND after ball A is projected upwards with a velocity of 16 m/s, a second ball, B, is thrown vertically downwards at a velocity of 9 m/s from a balcony 30 m above the ground. 1.Calculate how high above the ground ball A will be at the instant the two balls pass each other?

science
If a projectile is shot under an angle of 30* with a force of 500N what is the time the projectile reaches the maximum hight.The projectile's mass is 100g.(g=10N/kg)

Science
determine the pH of each of the following solutions: 0.0812M HCl pH 3.11*10^-4 M HI pH 8.65*10^-8 M KOH pH 0.00212M Ca(OH)2 pH

science help PLS
A home gets its water from a private well. Which of the following would be the best way for the homeowner to obtain a water-quality report? A.Hire a local contractor to test the home's water supply B.Record observations made by smelling and tasting the tap water C.Request data...

Science
determine the pH of each of the following solutions: 0.0812M HCl pH 3.11*10^-4 M HI pH 8.65*10^-8 M KOH pH 0.00212M Ca(OH)2 pH

Science
Which of the following are the sites within the human body where carbon dioxide and oxygen are exchanged? A. Alveoli B. Arteries C. Synapses D. Venules I think A

Science
An example of active immunity is the transfer of A. antibodies through the placenta. B. immunoglobulins through breastfeeding. C. antigens through vaccination. D. immune cells through a blood transfusion. I think c 46. Which of the following classes of biological molecules ...

Science
Which of the following structures is present in both prokaryotic and eukaryotic cells? A. Golgi apparatus B. Cell membrane C. Endoplasmic reticulum D. Chloroplast I think B

Science
Which of the following is the pH when the concentrations of hydrogen ions and hydroxide ions in an aqueous solution are equal? A. 14 B. 7 C. 1 D. 0 I think 1

Science
Which of the following tissues would send a message to the brain indicating that someone has touched something hot? A. Epithelial tissue B. Nervous tissue C. Muscle tissue D. Connective tissue I think a

Science
An individual suffers severe blunt trauma to the thoracic cavity. Which of the following organs are at greatest risk from this injury? A. Heart and lungs B. Liver and stomach C. Brain and spinal cord D. Large and small intestines I think A

Science
Which of the following statements best explains the relationship between the mitochondria and the plasma membrane? A. The mitochondria makes proteins that become a part of the plasma membrane. B. The mitochondria makes a gas that the plasma membrane uses. C. The mitochondria ...

Science
In a certain plant, red flower color(R) is dominant over white(R). if a plant heterozygous for red flower color and one with white flower are crossed, which of the following would be the expected proportion of individual in the next generation? A. 4/4 red 0/4 white B. 3/4 red ...

science
you are given one litre each of 0.5 M HCL and 0.2 M HCL. How should they be mixed so as to give maximum volume of 0.4 M HCL.

science
Two positive point charges of 12 * 10 ^-6 and 8 * 10 ^-6 respectively are placed 10 cm apart in air .the work done to bring them 4cm closer

Science
Radius of an iron sphere is0.21m if density of iron is 7.80g calculate the mass

science
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...

science
Explain why earth and other planets were not solid when they formed during the beginning of the Precambrian, approximately 4,600 million years ago (MYA). What was this particular time period called, and why is this period not considered a part of Earth's geological history?

Physical Science
What is the density of a rectangular block that has a mass of 500g and a volume of 50cm3? what i came up with was 1000. i feel like im wrong though. can anyone please help me.

Science
Alisha use wire to connect a battery,a lightbulb,and a switch,but the bulb does not light up even thought the switch is in the closed positio.which might explain the problem?

science
explain the locations ozone can be found, how ozone is helpful, how is it harmful,what causes the deposition of the ozone layer

SCIENCE!!
1.How do scientists classify small objects in the solar system? A)By size B)By shape C)by size, shape, and temperature D)by size, shape, and composition** (**=ANSWER!!)

science
concept map of flower pollen stamens ovaries pistils stigmas filament anther ovules petals and sepals

General science
Which of the following is not a natural result or response to overpopulation? A. Starvation B. Predation C. Extinction D. Migration C

English
At school, he learns 10 subjects such as math, science, social studies, computers, ethics, etc. He is in math class now. He has a cell phone. He is sitting at the back. One of his friends calls him and asked "Which class are you in?" What is the answer to the question. 1. I'm ...

Science
What if a student gets a 65 on 1 test and 100% on 4 tests? What will there grade be?

Science
True or False? Energy is measured in Newtons?

Science
Which of the following can be accurately said about climax communities? A. Climax communities are always stable. (B. Restoration of the original climax community is always achieved at the same rate.) C. Climax communities are always uniform. D. Restoration of the original ...

Nature Science
Which of the following can be accurately said about climax communities? A. Climax communities are always stable. (B. Restoration of the original climax community is always achieved at the same rate.) C. Climax communities are always uniform. D. Restoration of the original ...

Science
This is not questions its the answers hope it helps took a long time to type. A basketball momentarily changes shape as it bounces off the floor. This is due too balanced forces acting on the ball TRUE* FALSE* A ball slowing down as it rolls across a carpet is a example of ...

Science
Hi!One Question! Which of the following explains why your body may contain a carbon atom that was present in George Washington's body from 1776?

science
a person roller skates down a street heading east which of the following would be true abot friction in this scenario? ----------------------------------- 1.A. friction does not affect the skates in this scenario 2.B. friction pulls the skates wheels eastward 3.C. friction ...

Mathametical Literacy,Agricultural Science,History,Geography,English,Life Orientation and Tshivenda
Which job can I get by these subjects?

Science
'Cl(OCl)Cl' What is the name of it?

science help pls pls
The diagram below shows the movement of energy in the water cycle. Diagram showing the movement of energy in the water cycle. There are three boxes and six arrows that appear in the following order: box labeled 'Atmosphere,' one arrow pointing to a box labeled '?,' arrow ...

science help PLS
Plants take up carbon dioxide from the air and nutrients from the soil. This is an example of interactions between the geosphere, cryosphere, and atmosphere biosphere, atmosphere, and geosphere atmosphere, hydrosphere, and geosphere cryosphere, atmosphere, and hydrosphere

science help
Two factors which cause global climate change are listed below. Factor 1: Volcanic eruptions. Factor 2: Changes in the amount of Sun’s heat received by the Earth’s atmosphere and surface. Which of these statements is correct about the two factors which cause global climate...

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Look at the position of Location 1, Location 2, and Location 3 in this picture. Simple diagram of a lake represented by a wavy circle. The circle is labeled 'Lake,' and there are three points outside of the lake: 'Location 1' is to the northeast of the lake, 'Location 2' is to...

science
what is the name of the gas which forms dry ice ...........u can also send the lab. preparation of it

science
3 identical point charges each one micro coulomb placed at vertices of an equilateral triangle 10cm apart calculate the force on each charge

science
If mass M explore into three pieces two of equal to M/4 move perpendicular to each other with 3m/s 4m/s determined velocity of third

Political science
How did the Stamp Act, Boston Massacre and Boston Tea Party connect with the idea of representation? Use Zinn "Voices of a people's history of the united states" and the Federalist Papers to support your answer. Also, be sure to discuss the ideas of pure democracy, ...

science
You observed light passing through lenses and through a set of prisms. Why does refraction occur?

SCIENCE
History of how this ginger has been used as medicine

Science
What's the difference between the types of light detected by radio, refracting, and reflecting telescopes?

SCIENCE
History of how this ginger has been used as medicine

science help ASAP
can someone Explain the process of succession plz

Maths lit,life science,agriculture,geograph
Plzzz help me which carree can i choose?

Science
Belonging to one communtity

Science AP Chemistry
It is necessary to add iodide ions to precipitate the lead(II) ions from 250 mL of 0.076 M Pb(NO3)2(aq). What minimum iodide ion concentration is required for the onset of PbI2 precipitation? The solubility product of PbI2 is 1.4 × 10−8 . Answer in units of mol/L. What ...

science
How much sodium bromide do I need to make 100 ml of 0.2m solution?

math lit,life science,agriculture,geogrphy,L.O,
Which good career path is good for the following subject

Science
a bullet with mass 0.281 kg is fired from a rifle. It stick into a block of wood with a mass of 17.8 that was at rest. The block/bullet combo moves at 3 m/s. What was the initial velocity of the bullet?

politcal science
As of January 2015, how many members of the House of Representatives and the Senate are NOT members of the Democratic or Republican party? 0 123 100 2

politcal science
Which of the following is NOT one of the Republican party factions? Fiscal Conservatives Libertarians Organized labor Neoconservatives

politcal science
Who is the only third-party candidate to win more than 25% of the popular vote? Question 7 options: Millard Fillmore Theodore Roosevelt George Wallace Ralph Nader

politcal science
In Washington's Farewell Address, what type of policy did he advocate when dealing with foreign countries? Question 6 options: Complete isolation for all foreign countries Extensive treaties with other countries Expansion of US power over foreign countries Neutrality in ...

science help PLS
Which of the following types of stars started out on the main sequence with the largest initial mass? In Graph A, the curve peaks at 800 nm, in the red section of the visible light spectrum. In Graph B, the curve peaks at 550 nm, in the green section of the visible light ...

History ,life science,Geography,Lo,Maths lite,English and Setswana
Careers in history

science
interpret the number of moles of oxygen atoms in po3- 4

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