Science

Recent Questions

science
when two equal forces of f1 and f2 making an angle of 180 degree with each other the magnitude of their resultant is ................?

Science
Four resistance each of 8 ohm are connected to a square. The resistance between any two diagonally opposite terminals will be ?

science
How is sun related to nuclear, electromagnetic, and heat energy?

Science
Four students dissolved 30g of salt in a 200ml solution of water.Each student heated his or her water solution to a different temperature ( Marcus had 10 and tyra had 25 Luis had 50 and Andrew had 75) which student most likely had the solution with the fastest dissolving rate ...

Science
2Na(s) + 2H2O(aq) = 2NaOH (aq) + H2 (g) Is this reaction exothermic or endothermic? I don't understand ,

Physical Science
How much Cerium sulfate is needed to make a saturated solution in 100mL of water at 30 degrees Celsius?

Science
•Explain the process of succession •Describe how changes in an ecosystem can affect organisms that live there •Describe the amount of time needed for ecosystem recovery What are the dependent and independent variables? Independent: Dependent:

Science
Which of the following correctly identifies active transport? A. Transport proteins move large molecules from areas of low. B. Transport proteins move large molecules from areas of low concentration areas of high concentration areas without the use of cellular energy. C.Small ...

science
What is the volume of chlorine that is used to produce 292 grams of hydrogen chloride?

Science PLEASE PLEASE HELP
Which of these statements about saltwater is correct? Saltwater freezes at a lower temperature Saltwater freezes at a higher temperature Saltwater does not freeze at any temperature Saltwaters freezing point depends on the temperature of the ocean floor***** PLEASE HELP ME

science
Write about entropy and entropy generation in daily life P help me..

Science HELP PLS
1. What is a Genetic Mutation? A. the process of decreasing chromosome 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 organism’s genetic code D. a fusion of egg and sperm cell to produce a new ...

science
if a block of mass 2kg slides on an inclined plane making an angle of 60° with the horizontal.Then find work done by force of gravity

Computer science
Working solution for specimen paper 2015 9608 for task 2

Science
If 300gm water of 25°c is added into 100gm ice of 0°c then calculate the final value if this mixture.

physical science
4.8g of magnesium react was completely burned in oxygen and magnesiumoxide was produced. what is the mass of magnesium produced?

Earth Science
Assume that the lower troposphere is isothermal with a temperature TA. An airparcel at the surfaceis heated isobarically to a temperature of T0 and then released and allowed to ascend dryadiabatically. Assume that the buoyancy is the only force acting on the parcel and that ...

Science
1. What type of reproduction results in offspring being identical to the parent? A)sexual reproduction B)genetic engineering C) unicellular D)asexual reproduction 2. Which of the following is an example of sexual reproduction? A)a lizard growing a new tail B)a chicken laying ...

Science
Which of the following circuits will allow electric current to flow?

science
What happens to kinetic energy of a snowball as it rolls across the lawn and gains mass

Weird question science
which of these body systems performs the function of getting rid of chemical waste? a. immune b.nervous c.skeletal d.uninary d?

science
acrostic about motion

Science
A metal from group 1 and a nonmetal from group 17 are? A. Not likely to bond. B. Likely to form a covalent bond. C. Likely to form an ionic bond.*** D. Likely to form a metalloid. Is this correct?

Science
Every year, Eli and his family visit the Great Sand Dunes desert in Colorado. Eli notices that more sand dunes with varied shapes and sizes appear each year. Explain what causes this phenomenon. Plz answer thoroughly and detailed and DO NOT use Wikki.

science
Kirti kept a metal spoon in a glass jar filled with pickle for a few days. She observed there were holes in the spoon. What could be the reason?

Science
Consider the diatomic molecule Na2. For simplicity let the basis set consist of the orbitals: and . In the molecule the overlap integral between the 3s orbitals is 0.45. Answer the following questions using the orbital energies determined using the Revised Slater’s Rules ...

Science
Which two systems work with the muscular systems to allow the body to move

Earth Science
1. The water cycle is the _____. A. distribution of drinking water on Earth ?**? B. unending circulation of Earth's water supply ?**? C. the recycling of water after industrial use ?**? D. the evaporation of water from Earth's surface ?**? 2. Plants release water into the ...

science
one way the modern atomic model differs from the bohr model of an atom

Life Science 7
What is a good way to remember Golgi Apparatus, vesicles, vacuole,and nuclear envelope

math
In an examination,Dada scored x% in maths,50% in science and 70% in English studies.if his mean score for the three subject was 55%, find x

science
fical lengt of concave mirror =50cm m=1÷2 cm .find the position of the object

Science
Explain why n2h4 acts as bronsted lowry base but n20 does not

Science
Which organ is NOT part of the Digestive System??

Earth Science
1.) What is the relationship between temperature and the rate at which antacid tablets react with water? 2.) Form a hypothesis about the relationship between temperature and the rate of chemical weathering. 3.) Would a limestone building weather more rapidly in Homer, Alaska, ...

science
Particles of mass 3m and 5m hang one at each end of a light inextensible string which passes over a pulley.the system is released from rest with the hanging parts taut and vertical.during the subsequent motion the resultant force exerted by the string on the pulley is of ...

science
0.150 L of 0.420 M H2SO4 is mixed with 0.100 L of 0.270 M KOH. What concentration of sulfuric acid remains after neutralization?

Science
How many grams of sugar are needed to make a saturated solution of sugar in 100g of water at 20 degrees Celsius?

science
a stone is thrown at an angle of 30* with the horizontal direction which strikes the tip of the building 2 m height ,if the distance of the building from the point of observation is 10 metre .find the velocity of the projectile of the stone. ans...

science
a stone is thrown at an angle of 30* with the horizontal direction which strikes the tip of the building 2 m height ,if the distance of the building from the point of observation is 10 metre .find the velocity of the projectile of the stone.

Math
Pedro spent 2 1/5 hours on his math himework and half as lomg on his science homework one weekend. If his english and social studies homework took 7/8 as long, how much time did he spent on homework that weekend?

Algebra
During a science experiment, Nico created a 32%alcohol solution by mixing 8 fluid ounces of a 50% alcohol solution with a certain amount of an 8% alcohol solution. How many fluid ounces of the 32% alcohol solution did he create?

Science
0.745 g of kcl disloved in 100 ml of water,then molarity?

Science
A stone projected vertically upwards with a velocity of 20m/s. Two seconds later, a second stone is similarly projected with the same velocity. When the two stones meet, the second one is rising at a velocity of 10m/s. Neglecting air resistance, calculate the (i) lenght of ...

Science
Is red hair mutated?

science
what do mangroves ecosystem provide for organisms

Science
A community obtains electricity from a coal plant. This coal plant produces pollution that has caused environmental problems in the lakes, streams, and forests within the community. What kind of secondary pollution has the coal plant most likely produced, and what kinds of ...

Science Psysics
A 6 kg black is placed at the very top of a ramp that is inclined at 31 degrees and the block is released to slide down the ramp. As the block slides friction exerts a constant resistive force of 17N directed back up the ramp What is the block's speed when it arrives at the ...

Science
name two types of evidence used to support the theory of evolution explain how scientists use each type of evidence to provide support for evolution give one example for each

Science
Without. Specie is not able to survive

Science
How is a parallel circuit different from a series circuit? A: A parallel circuit only has one path for the circuit to take. B: A parallel circuit has more than one path for the circuit to take.** C: A parallel circuit has a broken path for the circuit to take D: A parallel ...

Art
Which of the following subjects enabled artists to begin using clay to form art? 1. Language arts 2. Social Studies 3. Mathematics 4. Science *** I think its D.

science
Determine the magnitude and direction of the horizontal resultant force on minibus A=1800N and B=800

science
A species that influences the survival of many other species is an ecosystem is called a(n) (A) Niche species (B) Extinct species (C) Keystone species (D) Endangered species

Science
Students were given materials to complete a circuit to turn on one light. The materials received were 2 wires,AA battery, and various sizes lightbulbs.What is the variable in the experiment? Wires,battery, size of lightbulb, or time of day

Science
An object accelerates at 7.5m/s^2 with a force of 25N west being applied to it and there is a frictional force of 13N. What is the mass of the object

Science
If an object with a mass of 98kg at 2.5m/s^2, what amount of force is applied to it?

Science
a toy car starts from rest and accelerate uniformly at 2.0m/s square for 5.0 seconds. calculate its final velocity

Science
A car starts from rest and attains a velocity of 40 metres per second in 20 seconds. it maintains this velocity for 30 seconds and then comes to rest in 25 seconds. 1. sketch the velocity time graph for the motion.

Science
A car starts from rest and attains a velocity of 40 metres per second in 20 seconds. it maintains this velocity for 30 seconds and then comes to rest in 25 seconds. Calculate the total distance covered by the body

Science
A car starts from rest and attains a velocity of 40 metres per second in 20 seconds. it maintains this velocity for 30 seconds and then comes to rest in 25 seconds. 1. sketch the velocity time graph for the motion. 2. Calculate the acceleration of the body. 3. Calculate the ...

science plz correct me
Which of the following boxes would have the strongest gravitational pull on a third object positioned at an equal distance from both boxes? Box A: 100 g Box B: 10,000 g A. box b because it has more mass B. box a because it has less mass C. box a because it is bigger*** D. box ...

science
according to ohms law what is the resistance of a lightbulb if that applied voltage is 21.0 V and the current is 3.0 amps? 24 ohms 7.0 ohms** 18 ohms 3.0 ohms

Science 7
Which of the following boxes would have the strongest gravitational pull on a third object positioned at an equal distance from both boxes? Box A: 100 g Box B: 10,000 g A. box b because it has more mass B. box a because it has less mass C. box a because it is bigger D. box b ...

Science 7
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 ...

science
Complete the table by writing the result of each weather pattern. Choose from the following: cold wave, drought, flood, heat wave. Weather Pattern Result 19. Thunderstorm remains over an area for many hours 20. Extended period of well-below-normal rainfall 21. Extended ...

science
The intense updrafts and downdrafts that characterize severe thunderstorms are the result of what? Thanks!

science
kinsey leaves her house to exercise and run straight down a long street for 5.00 meters at a constant rate of 3m/s then turns and run back toward her house for 2 meters what is her average speed in m/s what is her displacement what is her average velocity in m/s

science
a stone weighing 0.2kg tied to the end of the string 0.6m long whorld in a horizontal circle in a speed of 150 revolutions per minute. calculte the tension and string

Science
A tree that sheds its leaves in the fall is exhibiting. A geotropism B photomotropism C phototropism D photoperiodism

Science
What caused the syringe to leave a puddle of water after sitting in the sun for 10 minutes ?

Science
a student made an electromagnet using a battery electrical tape and metal wire. she wanted to see what the effect would be if she switched the side of the battery she connected each end of the wire to. which of the following would be a correct conclusion? a. switching the side...

Science
Imagine Two Artificial Satellites Orbiting Earth At The Same Distance. One Satellite Has A Greater Mass Than The Other One? Which Of The Following Would Be True About Their Motion? A.The satellite with the greater mass is being pulled toward Earth w/ less of a force than the ...

Sand Dunes (Science)
Every year, Eli and his family visit the Great Sand Dunes desert in Colorado. Eli notices that more sand dunes with varied shapes and sizes appear each year. Explain what causes this phenomenon. PLZ DO NOT SAY WIKI!!!!!!!!

Science 7
a student made an electromagnet using a battery electrical tape and metal wire. she wanted to see what the effect would be if she switched the side of the battery she connected each end of the wire to. which of the following would be a correct conclusion

Science
Imagine Two Artificial Satellites Orbiting Earth At The Same Distance. One Satellite Has A Greater Mass Than The Other One? Which Of The Following Would Be True About Their Motion? A.The satellite with the greater mass is being pulled toward Earth w/ less of a force than the ...

science
A motorcyclist (with a total mass of 180kg) travels up a hill. When she starts at the bottom of the hill (altitude 32m) her velocity is 43km/h. At the top of the hill (altitude 365m) she has a speed of 115km/h. The hill is 12km long and during the journey she applies a braking...

HELP WITH SCIENCE FAST
1.  Most likely, ____ were formed​when lava from the moon's interior​ flooded bowl­like regions on the moon's surface. (1 point) maria* highlands craters basins 2.  Currently, the most supported ​theory of the origin of the ...

science, organic chemistry
Determine the amount of compound remaining in the aqueous phase and organic phase and organic phase if a 5.0g organic compound is dissolved in 100 mL of water and is extracted with three 50-mL portion of ether (kb= 10). Compare this with one 150 ml portion with ether. Which is...

Science
What is the difference between xylem and phloem?

science
HOW MANY ATOMS OF OXYGEN ARE PRESENT IN 8.8G OF CARBON(IV)OXIDE

Science
25cm3 of 0.1mol/dm3 Na2CO3 solution was titrated against 23.45cm3 of H2SO4 acid using phenolphthalein indicator. Calculate the concentration of the acid.

Computer Science, Hardware
1.) If each stage is 1 clock cycle, calculate the number of clock cycles to execute a code stream of 10 instructions in a non-pipelined (i.e. sequential) fashion? 2.) Repeat part 1, assuming the instructions are executed in a pipelined fashion. Would this be the right formula...

Science
Cost is an example of _____ in designing a product. A. a constraint B. a solution C. a trade-off D. an idea is the answer A?

Science
Identifying the cause of any problems in a design is called _____. A. Patenting B. Brainstorming C. Prototyping D. Troubleshooting is the answer D?

Science
Identifying the cause of any problems in a design is called _____. A. Patenting B. Brainstorming C. Prototyping D. Troubleshooting is the answer D?

Science
Identifying the cause of any problems in a design is called____.

Science chemistry
Also. If you are given the conductivity of an unknown chemical, what the blue and red litmus paper change into when you check the chemical. And the pH level and solution type. How do you know the solution name and formula? I never learned how to find the solutions name of ...

Science chemistry
Also. If you are given the conductivity of an unknown chemical, what the blue and red litmus paper change into when you check the chemical. And the pH level and solution type. How do you know the solution name and formula? I never learned how to find the solutions name of ...

Science chemistry
Does hydrogen borate conduct electricity? We were told to search this up but I can't find it online and my class never did a lab on it.

Math
Prove that angle a is equal to angle E if angle D is equal to angle c Science I can't put the picture of the triangle I will try and explain it Two triangles that connect on one angle >< like this but a triangle and the angle in the middle ^ ( the angle that has the ...

Science
Calculate the pH of a solution containing 2g of caustic soda per litre of water

Science
Acrostic poem for L A N D F O R M S

science
flow chart to find producr,average,sum,largest of three numbers?

science
The lowest possible energy position for an electron is known as the ground state. true or false

AP environmental science
To raise funds to meet its annual budget, a state government is debating whether to sell a large section of public forest to a logging company. Evaluate this plan in terms of two ecosystem services that the state might gain and two services the state might lose if the forest ...

science
1.The trait for green eyes is dominant (Y) to brown eyes which are recessive (y). Determine the eye color a child will have with a Yy genotype: ☐Blue Eyes ☐ Green Eyes ☐ Hazel Eyes ☐ Brown Eyes 2. A bird that is heterozygous for the yellow feather trait...

Computer Science
Write a program that Will prompt a user to enter his/her name and number.use a while loop that will display the user name times the entered number

Earth Science
20. Contrast point source pollution and nonpoint source pollution. Can someone help me please?!?!?! Asap please?!?!?!?!

science
Urea forms a ideal solution in water. Determine the vapour pressure in an aqua solution containing 10 percent bymass at 40degree Celsius

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