Thursday
March 30, 2017

# Posts by Demi

Total # Posts: 53

Calculus
Kayla claims that she can find an approximate value for sin 1o without using a machine to do any computations. Explain or show how she can do this (Hint: if you choose to explain the process, please be very specific. If you choose to show how it is done, you can use your ...
February 22, 2017

chemistry
How many grams of NH4Cl will dissolve at 50 degrees C?
February 14, 2017

Human Growth and Reproduction
we have the name!!!!!
December 16, 2015

Human Growth and Reproduction
yes, divide is correct
December 16, 2015

algbra 1
A farm has only sheep and geese. It has a total of 58 animals and a total of 150 legs on the animals. How many sheep and geese are on the farm?
May 25, 2015

Physics
A spring with a spring constant of 531 N/m is used to propel a 0.363-kg mass up an inclined plane. The spring is compressed 37.7 cm from its equilibrium position and launches the mass from rest across a horizontal surface and onto the plane. The plane has a length of 4.00 m ...
April 4, 2015

physics
A 3kg mass is attached to end of a light rod and made to move clockwise in a vertical circle of radius 2m and speed of 6m/s. The tension in the rod at the lowest point is most nearly A. 54N B. 84N C. 30N D. 24N E. 39N
January 4, 2015

Physics
A 2kg mass moving at 10m/s slows to speed of 4m/s while sliding across a rough horizontal surface. The work done by friction is most nearly A. 116j B -116J C. 84j D. -84j E. -16j
January 4, 2015

Social Science
Hello Thank you for your help
November 22, 2014

Social Science
Where can I find information on the difference between English policing and American policing, without using wikipedeia? I found some information but is not showing a difference. Thank you
November 22, 2014

History
Compare and Contrast the similarities and differences of the Universal Declaration of Human Rights and The Declaration of Independence
November 10, 2014

Calc
Find the x–coordinate of the point on the parabola y=x^1/2 nearest to the point (4, 0).
November 9, 2014

Calc
Find the x–coordinate of the point on the parabola mc002-1.jpg nearest to the point (4, 0).
November 9, 2014

math
thank you. i understand it better now
August 14, 2014

math
A ship sails due north from a position 5 degrees, 28' South Latitude to position 6 degrees, 43' North Latitude. Given that one minute of latitude is equivalent to 1 nautical mile, the ship has sailed a distance of A. 75 nautical miles B. 371 nautical miles C. 731 ...
August 14, 2014

Math - Algebra
In a thin rectangular tin sheet 8x12 sheet, you have to cut a rectangular opening. The area of the opening has to be 45 feet, and its edges have to have an equal distance from the edges of the sheet. Determine this distance.
May 8, 2014

english
Paraphase - to cut a long story short, one day I decided to be a man about my feelings
February 26, 2014

math
100 pennies
November 12, 2013

chemistry
calculate the hydroxide ion concentration in a solution of almond extract PH.3.8.state if almond is basic or acid
April 25, 2013

health
Me too!!
August 11, 2012

math-Probablity
A student is writing a multiple choice test consisting of 40 questions, each of which provides four possible choices. He is certain that he has 16 questions correct. If he guesses for all of the remaining 24 questions, what is the probability that he will pass the test?
June 5, 2012

biology
If you toss a coin and it comes up tails on eight consecutive tosses, what is the likelihood it will come up heads on the ninth toss?
April 3, 2011

Physics
A stone is thrown directly upwards with an initial speed of 34.5 m/s . What is the maximum height the stone will reach?
January 29, 2011

algebra
The formula b=27a, is used in New England to estimate the minimum furnace output, b, in BTUs, for a modern house with a square feet of flooring. What is the minimum furnace output for BTUs? What is the answer to A? I have searched and listened to all kinds of algebra help ...
January 8, 2011

physics
A person looking out the window of a stationary train notices that raindrops are falling vertically down at a speed of 6.6 m/s relative to the ground. When the train moves at a constant velocity, the raindrops make an angle of θ = 36° when they move past the window as...
September 6, 2010

physics
A rifle is used to shoot twice at a target, using identical cartridges. The first time, the rifle is aimed parallel to the ground and directly at the center of the bull's eye. The bullet strikes the target at a distance of HA below the center, however. The second time, the...
September 5, 2010

physics
A motorcycle daredevil is attempting to jump across as many buses as possible (see the drawing). The takeoff ramp makes an angle è = 18.0° above the horizontal, and the landing ramp is identical to the takeoff ramp. The buses are parked side by side, and each bus is...
September 5, 2010

physics
A rock climber throws a small first aid kit to another climber who is higher up the mountain. The initial velocity of the kit is 17 m/s at an angle of 50° above the horizontal. At the instant when the kit is caught, it is traveling horizontally, so its vertical speed is ...
September 5, 2010

physics
A bird watcher meanders through the woods, walking 0.45 km due east, 0.60 km due south, and 2.70 km in a direction 37.0° north of west. The time required for this trip is 4.00 h. (a) Determine the magnitude and direction (relative to due west) of the bird watcher's ...
September 5, 2010

physics
In a football game a kicker attempts a field goal. The ball remains in contact with the kicker's foot for 0.050 s, during which time it experiences an acceleration of 360 m/s2. The ball is launched at an angle of 46° above the ground. Determine the horizontal and ...
September 5, 2010

physics
A sky diver, with parachute unopened, falls 625 m in 15.0 s. Then she opens her parachute and falls another 348 m in 146 s. What is her average velocity (both magnitude and direction) for the entire fall?
August 30, 2010

physics
A drag racer, starting from rest, speeds up for 402 m with an acceleration of +20.0 m/s2. A parachute then opens, slowing the car down with an acceleration of -5.20 m/s2. How fast is the racer moving 3.75 102 m after the parachute opens?
August 30, 2010

Organic and Nuclear Chemistry
Regarding nuclear reactions that release a great deal of energy, which statement is true? A. In a fission chain reaction, a uranium nucleus struck by a high-energy neutron emits two neutrons. B. Nuclear fission releases more energy per unit mass than does a fusion reaction. C...
June 25, 2010

painting
What are some of the charateristics of Baroque Art
April 27, 2010

Physics
Thank you for any help and assistance. Here is the question/problem: Because of the pressure inside a popcorn kernel, water does not vaporize at 100 degrees Celsius. Instead, it stays liquid until its temperature is about 175 degrees Celsius, at which point the kernel ruptures...
March 28, 2010

Physics
I'm understanding most of this physics, but here is one last question I would appreciate help on. Thank you! Okay, so the question involves a figure. A link to the question and the picture with it is below can be found by googling the question along with Holt physics. The ...
March 26, 2010

Physics
I appreciate any help! Thank you!! How much energy must be added to a bowl of 125 popcorn kernels in order for them to reach a popping temperature of 175 degrees Celsius? Assume that their initial temperature is 21 degrees Celsius, that the specific heat capacity of popcorn is...
March 26, 2010

Physics
A Jeweler working with a heated 47g gold ring must lower the ring's temperature to make it safe to handle. If the ring is initially at 99 degrees Celsius, what mass of water at 25 degrees Celsius is needed to lower the ring's temperature to 38 degrees Celsius?
March 26, 2010

science
what helps digest your food?
March 19, 2010

chemistry
Which of the following molecules is polar? 1. CH4 2. BH3 3. NH3 4. CF4 5. H2
March 16, 2010

Physics
Thanks! I highly appreciate it!
January 1, 2010

Physics
I'm having trouble with this question. Some __ objects emit no visible light but are known through __ and radio images; satellite observations __ Earth's atmosphere help scientist study space at wavelengths that do not reach Earth's surface. If you can answer it, I...
January 1, 2010

Religion
Judaism is based on the bond between God and________?
September 16, 2009

Pre-Algebra
Express as a unit rate: \$5 for 10 cans of soup.
May 19, 2009

Algebra
How long will it take to earn \$525 in interest if \$3500 is invested at a 6% annual interest rate?
May 19, 2009

8+2=5y-2x
April 6, 2009

U.S. History
Was Brown v. Board of Education the most important event in breaking down the legal foundations of the Jim Crow system? I want to argue yes, but I can't think of anything creative, only things that are obvious. Any ideas?
February 8, 2009

space
what are connstellations? thanks. xx.
January 17, 2009

Science
What Alkalis are there that i would find in my house for like cleaning ect and what is the strongest alkali. thank-you x
January 14, 2009

eco
That's what I am confused too.
November 2, 2008

eco
Most countries, including the United States, import substantial amounts of goods and services from other countries. Yet there's also saying that a nation can enjoy a high standard of living only if it can produce a large quantity of goods and services itself. How can you ...
November 2, 2008

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