Wednesday
December 7, 2016

Homework Help: Science

Branches of Science

Recent Science Questions

Science
What science field is Vantablack considered to be part of?
Saturday, August 13, 2016 by Mary

science
list with match stick figures/pictures of some exercises to release stress.
Saturday, August 13, 2016 by esha

Science
How the adhesion and cohesion properties of water are linked to photosynthesis😐
Saturday, August 13, 2016 by 🤓👑

PHYSICS/SCIENCE
How much heat must be removed from 5.0g of water at 10°C to become ice at 0°C ? (my name is Kevin and I changed it to KPL cuz there is another kevin here)
Saturday, August 13, 2016 by KPL

science
What is absolute zero temperature?
Saturday, August 13, 2016 by Bhawana

PHYSICS/SCIENCE
How much heat must be removed from 5.0g of water at 10°C to become ice at 0°C ?
Saturday, August 13, 2016 by Kevin

Physics/Science
How much heat must be removed from 15.0g of water at 10°C to become ice at 0°C?
Saturday, August 13, 2016 by Kevin

science
10ml of 1M H_2 〖SO〗_4 will completely neutralize 10ml of xM NaOH solution. what is the value of x
Friday, August 12, 2016 by KANNAN

science
Calculate the pH of the solution 5ml of M/5,HCl+10ml of M/10 NaO
Friday, August 12, 2016 by KANNAN

science
if 〖HNO〗_3 changes into N_2 O,then calculate the change in oxidation number.
Friday, August 12, 2016 by KANNAN

science(chemistry)
A laboratory instructure gives a sample of Amino-powder to each if four students,1,2,3 and 4,and they weigh the samples.The true value is 8.72g.Their results for three trails are (1),8.72g,8.74g,8.70g (2),8.56g,8.77g,8.83g (3),8.50g,8.48g,8.51g (4),8.41g,8.72g,8.55g (A)...
Friday, August 12, 2016 by mary tembo

Science
Why might a scientist estimate a measurement?
Thursday, August 11, 2016 by Ariana

Science
Which of the following is not part of the cell theory? Cells are the building blocks of life. All living things are made up of cells. All cells are created from other cells through cell division. (MY ANSWER) The nucleus is the control center of the cell.
Thursday, August 11, 2016 by LOVE

science
To answer these questions you will need to refer to the volume of water dripping over time graph that you created in your science notebook from interactive art plotting a line graph activity. 1. According to the trend shown by the graph what volume of water would you expect ...
Thursday, August 11, 2016 by lilly

Science
After creating a prototype, which of the following would not be an appropriate next step in the design process of new technology? Research the need. Test product safety. Troubleshoot problems. Obtain a patent.(MY ANSWER)
Thursday, August 11, 2016 by LOVE

Science -Please answer
Brand X Brand Y No cleanser Area(mm2) Area (mm2) Area (mm2) 0,0,0 0,0.25,1.0, 0,0.50, ,0.20 2.75 1.25,3.0 Which of the following is a constant, or control variable, in this experiment? The brand of cleanser that didn't work. (MY ANSWER) The results observed over four days...
Thursday, August 11, 2016 by LOVE

Science
Date X cleanser Y cleanser none 5/18/11 0 0 0 5/19/11 0 0.25 0.50 5/20/11 0 1.0 1.25 5/21/11 0.20 2.75 3.0 --------------------------------- Which of the following is a constant, or control variable, in this experiment? The brand of cleanser that didn't work. (MY ANSWER) ...
Thursday, August 11, 2016 by LOVE

Science
It can be inferred from the passage that radioactive dating is important for estimating the age of A) all known meters B) all existing planets C) the earth D) the trees
Thursday, August 11, 2016 by Shelby

science
Torque due to action-reaction force is zero?
Thursday, August 11, 2016 by rihanna

Science
How to prepare 10mM NaH2PO4?
Thursday, August 11, 2016 by Chandandeep Kaur

science
Find the pressure exereted by a girl weighing 400N.standing on one heel of area 1cm square
Wednesday, August 10, 2016 by sahil

Science 1 question help plz thank you
Which of the following is not true about bias. A. Personal bias involves the influence of your own likes and dislikes B. Ethical bias involves basing a conclusion on too little data C. Cultural bias is influence from culture in which you grew up D. Experimental bias is a ...
Wednesday, August 10, 2016 by lilly

Science
1.How is scientific inquiry useful? 2.What does all scientific inquiry have in common? 3. define science and explain what scientists do.
Wednesday, August 10, 2016 by Senpai onii-chan

science
calculate the number of molecules of hydrogen and carbon present in 4 gof methane.
Wednesday, August 10, 2016 by sony

science
what is the value f g on moon?
Wednesday, August 10, 2016 by jazleen

science
calculate the mass of 120 cc of nitrogen at NTP. How many number of molecules are present in it?
Wednesday, August 10, 2016 by sandy

Science
Two forces whose magnitude are in the ratio 3 :5 gives resultant of 28. If the angle of their inclination is 60 °find the magnitude of each force
Tuesday, August 9, 2016 by Anonymous

science
A spring fixed at one end can be streched by hanging standard masses from the other end. What masses is needed to achieve a stretching force of 5N?
Tuesday, August 9, 2016 by Anonymous

Science
Which of the following is not a characteristic of life? A. maintains homeostasis B. composed of cells C. composed of atoms D. carries out metabolism C? Is that correct
Tuesday, August 9, 2016 by Amber

science
what is the ratio between acceleration and velocity?
Tuesday, August 9, 2016 by Anonymous

science
a 50 kg block is placed on an inclined plane with an angle of 30. then find the components of the weight (1)perpendicular (2)parallel to the inclined plane.
Tuesday, August 9, 2016 by shahanshah

science
How to prepare 250ml (n/10) sodium hydroxide solution (NaoH)
Tuesday, August 9, 2016 by Anime's

Science
Which of the following is true? Mark all that apply. A. a hypothesis can be proved incorrect through experiment B. conclusions cannot disprove a hypothesis C. conclusions are made based on the analysis of data D. opinion is used to analyze data Is it A and C?
Monday, August 8, 2016 by Amber

Science
Which of the following are examples of science? Mark all that apply. A. a journalist writes a story about a man who became rich by buying stock on Tuesdays B.a woman chooses an item to purchase based on its packaging C. a farmer consults a weather almanac to decide the best ...
Monday, August 8, 2016 by Amber

science
list with match stick figures/give pictures of some exercises to release stress.
Monday, August 8, 2016 by esha

science
how will you seperatea mixture of common salt,sand and iron fillings?
Monday, August 8, 2016 by shivam

science
how are cohesion and adhesion properties of water linked to photosynthesis?
Monday, August 8, 2016 by k

Science
If 50% if reactant is converted to product in first order in 25 minutes.how much of it would react in 100 minutes?
Monday, August 8, 2016 by Kinetics

Science
A person can throw a stone to a maximum distance of 100m.the greatest height to which he can throw the stone is?
Monday, August 8, 2016 by Abilasa

science
Why are pteriodphytes called most developed cryptogams
Sunday, August 7, 2016 by Diwash Dhakal

Science
A 500 kg horse pulls a cart of mass 1500 kg along a level horizontal road with an acceleration of 1m/s. If coefficients of the sliding friction between cart and ground is 0.2 then the force exerted by the horse on the cart in forward direction is:
Saturday, August 6, 2016 by Sakshi

maths
Ticket rate for the science exibition is 10rs for a child and 26 rupees for an adult. 740 rupees was got from 50person. How many children among them?
Saturday, August 6, 2016 by anu

science
if a 3118tata commercial vehicle apply barke with abs system at the speed of 40km/h,how much distance cover to stop the vehicle speed of 0km/h
Saturday, August 6, 2016 by subhasis

Science
What does sc mean on all jewlry items
Saturday, August 6, 2016 by Chris

Science
If a particle is projected at an angle of 30° to the horizontal with kinetic energy E then its kinetic energy at the topmost point would be?
Thursday, August 4, 2016 by Sujata

Science
how do flowering plant that do mot have all four parts can make seeds?
Thursday, August 4, 2016 by Ivy Mae O. Lucero

Logical science
(1)weathering of rock is a ......?......Change.
Thursday, August 4, 2016 by Fill in the blank.

Science
Explain the measures toreduce the problems associated with mining and extraction of metal
Wednesday, August 3, 2016 by Peter

Logical science
Weathering of rock is a ......?...... Change.
Wednesday, August 3, 2016 by Weathering

science
Write an equation to show reaction of pop with water
Wednesday, August 3, 2016 by raj

science
What is the molarity of a solution of sodium chloride which contains 0.5moles in 200cubic centimeters? #2.what volume of 1m solution of hcl will contain 10moles?
Tuesday, August 2, 2016 by thomas

science
list atleast ten healthy foods/smoothies/tonics with local produce that can help combat or reduse stress.
Tuesday, August 2, 2016 by esha

science
two vectors act at the same point on an object.a maximum resultant vector is obtained when the angle between these two vector is..
Monday, August 1, 2016 by nqo

science
A car drives for 100km at an average speed of 80km.how long will it take the car to cover the distance
Monday, August 1, 2016 by Nothile

SCIENCE
A CRICKET BALL OF MALL 100G MOVING WITH A SPEED OF 30M/S IS BROUGHT TO REST BY A PLAYER IN 0.03 SECONDS FIND CHANGE IN MOMENTUM?
Monday, August 1, 2016 by AATHREYA KRISHNAN

SCIENCE
TWO FORCES 8N & 10N AT AN ANGLE OF 30' ACTING ON A PARTICLE WHAT IS RESULTANT FORCE AND IT'S DIRECTION.
Monday, August 1, 2016 by BIHARI

Science
A crow bar of length 2m is used to lift a stone of weight 200kg if the fulcrum is set apart from stone how much effort should be applied to the other end of the crowbar to balance it?
Saturday, July 30, 2016 by Anjana Subedi

Science (Biology)
In a species of rodent, fur colour may be black or brown and their tail length either long or short. A pair of rodents were crossed, and their progeny then allowed to interbreed. The result in the F2 were as follows: 29 with brown fur with long tails; 9 long tailed with black ...
Saturday, July 30, 2016 by Khalid

science
a cricket ball of mass 0.2kg moving with a velocity of 0.4second. find the average force.
Saturday, July 30, 2016 by faizan shabista

Science
40 degrees north runs along 146th street on the north side of Indianapolis. What is the rotational velocity of the surface of the earth at 40 degrees north?
Friday, July 29, 2016 by A Bailey

science
a bullet is fired with velocity 55m/sec at a target.if if the sound of collision heard after 7second.find the distance between target and gun.(speed of sound in air=330m/sec
Friday, July 29, 2016 by nitNite

PACE INter Science Colldege
what is average rate in cm3/s of gasoline to the engine of a car travelling at 100km/hr if it averages 10km/l?
Friday, July 29, 2016 by ayesha

Science, English, math
Why do we live
Thursday, July 28, 2016 by Yo yo jo

Science
Pressure is 50N/m2,area is 600cm2.Find force
Thursday, July 28, 2016 by Srinjoy

Science
A motor boat starting from rest on a lake accelerate in a straight line at a constant rate of 3m/s for 8s. How far does the boat travel during the time?
Thursday, July 28, 2016 by Nimisha

Science
When did the first human exist? And when did they start populating the earth?
Wednesday, July 27, 2016 by Isaiah

physical Science
Sodium azide fully decomposes at 300 degrees celcius at a volume of 3,5 cubic decometer,calculate the mass of sodium azide pellets used
Wednesday, July 27, 2016 by wiseman Syabonga Xaba

science(physics)
A bullet of mass 100g moving with20m/sec .Strikes a wooden plank and peretrates up to 20cm.Calculate the resistance offered by the wooden plank.
Wednesday, July 27, 2016 by Raj

Science
What is physics
Wednesday, July 27, 2016 by Yashesh

science
Ice has a critical angle of 49.8 degrees, explain or rectangular prism of clear ice can be used for the total internal reflection of light by 90 degrees
Tuesday, July 26, 2016 by zai

Science
How many grams of hydrogen chloride are percent in 250cm3 of comercial 37% by mass hydro chloric acid solution? The density of the acid is 1.19gram/cm3.
Tuesday, July 26, 2016 by Anonymous

Science
What is the concentration off alcohol solution that was prepared by dissolving 40cm3 ethanol in 160cm3 water
Tuesday, July 26, 2016 by Anonymous

Science college question
An object is placed 3cm in front of a convex mirror whose focal length is 12cm where is the image formed and what is it's nature
Monday, July 25, 2016 by Balaram Mohanta

Science
How fast would a 20gram marble have to go to travel 9.5 inches. (Flat surface)
Monday, July 25, 2016 by Dalton

Physical Science
Green light has a frequency of about 5.3Hz×1014Hz. Using the relationship c=fλ, find its wavelength in air.
Saturday, July 23, 2016 by Hannah

science
The initial and final temperatures of a liquid are (67.7+0.2)°C and (76.3+0.3)°C . Calculate the rise in temperature.
Friday, July 22, 2016 by Mishika

Science
What is the kinetic energy of 0.5 kg soccer ball that is travelling at a velocity of 3m/s?
Friday, July 22, 2016 by Anonymous

science
What is the density of a piece of wood that has a mass of 25.0 grams and a volume of 29.4 cm3
Friday, July 22, 2016 by hilda

Science
Arun has prepared 0.01 percent of solution of sodium chloride in water .Clculate mass of solute and mass of solvent.
Friday, July 22, 2016 by Sonu

science
why the unit of work and energy are equal?
Thursday, July 21, 2016 by puja

Science
I can be traced back to 3000bc, often go unnoticed, can be overhead, under feet or somewhere in between, evolution has changed me, am lighter than I used to be, and can protect your investment.
Thursday, July 21, 2016 by Scott

science
When a body hanging form a spring balance is immersed in water it floats just below the surface of water and shows 100 g loss in its water ? (1) what is the weight of the body in water? (2) what is the weight of the body in air? (3) what is the upthrust on the body? (4) what ...
Wednesday, July 20, 2016 by parag

SCIENCE
WHAT CAN BE THE ARRANGEMENTS OF PARTICLES IN MERCURY
Wednesday, July 20, 2016 by SHAFAQ

science
According to chance what fraction of their children will have dimples?
Wednesday, July 20, 2016 by Haziq Mehboob

physical science
which sibstance has the least number of drops that can fit on the coin?
Wednesday, July 20, 2016 by ikhandlela

science
a bullet of mass 20g traveling horizontally at 100m/s embedded itself in the center of block of wood mass 1kg which is suspended by a light vertical string of length
Tuesday, July 19, 2016 by Anonymous

science
graphic organizer about the three type of boundary
Tuesday, July 19, 2016 by danica

MATHS
THE AVERAGE MARK OF 4 GIRLS IN A SCIENCE TEST IS 6,THE MARKS OF 3 OF ZM ARE 5,7,4.FIND THE MARK OF THE 4TH GIRL.
Tuesday, July 19, 2016 by EZRA

Science
The potential energy of a projectile at its maximum height is equal to its kinetic energy there . If the velocity of projection is 20m/s its time of flight is ?
Tuesday, July 19, 2016 by Ruby

science
3 charges are arranged along the x-axis. q1 = -4.50 nC is located at x = 0.200m q2 = +2.50 nC is located at x = -0.300m q3 = is a positive character located at the origin. What is the value of q3 for the net eletric force on it to be 4*10^-6 N? I found the charge on q3 to be...
Tuesday, July 19, 2016 by andrei

Fpb science
Find gew of d following Kmno. K2cr2o7. Kno3
Monday, July 18, 2016 by Ndubuisi

science
When the balloon has deflated, is there any difference between the air pressure inside and outside of the balloon? Explain. Please explain i don't understand it ASAP
Monday, July 18, 2016 by nanni

Science
1.Two stones are dropped from the top of a tower at an interval of 3 seconds.the relative velocity of the first Stone with respect to the stone at any instant during their fall is?? 2.if density, acceleration and force are taken as basic quantities, then time period has ...
Monday, July 18, 2016 by Nasrin

science
all acids are not corrosive.justify this statement
Monday, July 18, 2016 by rahul

science
The rate constant of a certain reaction is given by log K= 212/T Calculate the activation energy at 400K.
Sunday, July 17, 2016 by Aditi Arya

science
Give two reasons why the pressure decreases as blood flows along the capillary bed. =because it avoide the mixed up of the blood
Sunday, July 17, 2016 by Tunight

science
A cricket ball of mass 0.4 kg moving with a velocity of 72 km/h is brought to rest by a player. Find the magnitude of the average force exerted by the player? we have, F= m x a to find acceleration we want either dist(s) or time(t) it is not given how to find they have given ...
Friday, July 15, 2016 by nidhi

science
a satellite is moving in 36000km if it takes 24 hour what will be the speed?
Friday, July 15, 2016 by Anonymous

science
what is the equation for velocity?
Friday, July 15, 2016 by Anonymous

science
which physical quantity is given under the area of velocity time graph?
Friday, July 15, 2016 by Anonymous

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