Monday
December 5, 2016

Posts by Sue

Total # Posts: 1,074

physics
calculate the volume in cubic centimeters and area in square millimeters of a spherical bacterium of diameter 2.0um. model the bacteria is spheres
November 30, 2016

physics
Suppose a river flows due south with a speed of 2.0 m/s. Given that speed of motorboat relative to water is 4.2 m/s due east. (a) In what direction should the motorboat head to reach a point on the opposite bank directly east from your starting point? (b) What is the velocity ...
November 30, 2016

algebra
The perimeter of the rectangle is 62 meters. what is the value of x if one side equal 10 meters.
November 29, 2016

Probability
A multiple choice test has 10 items and each problem has four choices A, B, C, and D. How many ways can the answer sheet be completed so that every answer is wrong?
November 27, 2016

physics
Two forces are exerted on a hockey puck which initially stopped on frictionless ice. Force 1 is exerted in the positive x direction with magnitude of 10 N and Force 2 is exerted in the positive Y direction with magnitude 4 N. The hockey puck has a mass of 0.5 kg. What is the ...
November 20, 2016

Math
The ratio of the number of boys to the number of girls in a theater is 7:9. There are 12 More girls than boys in the theater. How many children are in the theater?
November 17, 2016

Math
An open box is to be made from a square piece of material by cutting four-centimeter squares from each corner and turning up the sides (see figure). The volume of the finished box is to be 144 cubic centimeters. Find the size of the original piece of material.
November 10, 2016

English
Identify the subject, verb, Object Formal writing shows writers' critical thinking. Verb- critical thinking Subject-writers Object-writers'
November 10, 2016

physics
A 3 kg block is released from rest at the top of a 20 m long frictionless ramp that is 5 m high. Find the values for the block just before it reaches ground level. (a) gravitational potential energy ----J (b) kinetic energy ----J (c) speed -----m/s (d) momentum ------kg·...
November 2, 2016

physics
What is the rotational speed of the hour hand on a clock? -----rev/s
November 2, 2016

physics
What is the rotational speed of the hour hand on a clock? -----rev/s
November 1, 2016

physics
A variable-speed drill, initially turning at 150 rpm, speeds up to 1300 rpm in a time interval of 1.0 s. What is its average rotational acceleration? ----rpm/s2
November 1, 2016

physics
A volume of 140 cm3 of an ideal gas has an initial temperature of 20°C and an initial pressure of 1 atm. What is the final pressure if the volume is reduced to 120 cm3 and the temperature is raised to 40°C?
October 29, 2016

physics
A child with a mass of 46 kg is riding on a merry-go-round. If the child has a speed of 3 m/s and is located 2.2 m from the center of the merry-go-round, what is the child's angular momentum? ____kg2/s
October 28, 2016

physics
A variable-speed drill, initially turning at 150 rpm, speeds up to 1300 rpm in a time interval of 1.0 s. What is its average rotational acceleration? ______rpm/s2
October 28, 2016

physics
A variable-speed drill, initially turning at 150 rpm, speeds up to 1300 rpm in a time interval of 1.0 s. What is its average rotational acceleration? ______rpm/s2
October 27, 2016

physics
A child with a mass of 46 kg is riding on a merry-go-round. If the child has a speed of 3 m/s and is located 2.2 m from the center of the merry-go-round, what is the child's angular momentum? ____kg·m2/s
October 27, 2016

physics
What is the gravitational potential energy of a ball with a weight of 72 N when it is sitting on a shelf 1.4 m above the floor?
October 25, 2016

Chemistry
According to the quantum-mechanical model for the hydrogen atom, which of the following transitions would produce light with longer wavelength: 3p to 2s or 4p to 2s? A) The 3p to 2s transition would produce light with longer wavelength. B) The 4p to 2s transition would ...
October 22, 2016

physics
Two identical boxcars (m = 14866 kg) are traveling along the same track but in opposite directions. Both boxcars have a speed of 5 m/s. If the cars collide and couple together, what will be the final speed of the pair?
October 19, 2016

chemistry
If 20 grams of zinc reacts with hydrochloric acid, how much zinc chloride is produced?
October 19, 2016

Physics
A coach is hitting pop flies to the outfielders. If the baseball (mass=145 g) stays in contact with the bat for 0.04 s and leaves the bat with a speed of 79 m/s, what is the average force actions on the ball?
October 18, 2016

Physics
A bowling ball rolls off the edge of a giant' table at 18 m/s. If it takes 6 s for the ball to hit the ground. A) How far does it land from the base of the table? B) how far does it fall?
October 14, 2016

Physics
A rock is thrown off a cliff with a vertical speed of 53 m/s upward and a horizontal speed of 30 m/s. A) what will these speeds Vx and Vy be 4 second later? B) what will be the x and y displacements of the rock be 4 second later?
October 14, 2016

Physics
A cyclist whose mass is 48 kg turns a corner with a radius of 30 m at a speed of 25 m/s. A) What is the magnitude of the cyclist's acceleration? B) what is the magnitude of the force action on the cyclist?
October 14, 2016

Physics
Please show me how to work the following problems. 1) A cyclist whose mass is 48 kg turns a corner with a radius of 30 m at a speed of 25 m/s. A) What is the magnitude of the cyclist's acceleration? B) What is the magnitude of the net force acting on the cyclist? 2) A rock...
October 14, 2016

Physics
What changed Newton's original work on the movement of the Moon around the Earth into the law of universal gravitation? 1) his conclusion that the same laws applied to all objects, no matter how small 2) his connection of gravitation to his first law 3) his connection of ...
October 12, 2016

physics
This figure shows the force on a 0.1-kilogram mass at various distances from Earth. Notice that the force decreases as the square of the distance. Now, consider satellites A and B, both circling Earth. If A has ten times the mass of B but B is 1/10 of the distance to the ...
October 9, 2016

physics
What two facts did Newton need to be able to calculate the acceleration of the Moon? 1) the distance to the Moon and the diameter of the Moon. 2) the time it takes the Moon to make one revolution and the distance from the Earth to the sun. 3) the diameter of the Moon and the ...
October 8, 2016

Chemistry
Complete and balance the following equation. If no reaction occurs, write noreaction . NaOH(aq)+FeBr3(aq)→
October 8, 2016

LA
THE BED FELL AND STOLEN DAY WHO LEARNED THE MOST AND WHO LEARNED THE LEAST
October 6, 2016

Chemistry
Consider the following reactants. Which produces a gas? 1. NH4Cl(aq) + AgNO3(aq) → 2. Na2CO3(aq) + BaCl2(aq) → 3. Na2S(aq) + HCl(aq) → 4. All of these would produce a gas.
October 5, 2016

Math
Lana took one and a half tines as long as jayden to finish a project. If lana took 15 days, how long did jayden take?
October 5, 2016

History
the correct answer would be c.
October 4, 2016

physics
What two facts did Newton need to be able to calculate the acceleration of the Moon? A) the distance to the Moon and the diameter of the Moon B) the time it takes the Moon to make one revolution and the distance from the Earth to the sun C) the diameter of the Moon and the ...
October 3, 2016

Physics
A 51kg person on a merry-go-round is traveling in a circle with a radius of 2 m at a speed of 6 m/s A) What acceleration does the person experience? B) What is the net horizontal force? C) How does it compare with the person's weight?
October 1, 2016

Math
The teacher says the correct answer for 18x24=432. How is it I keep getting 532.
September 28, 2016

English II
Write a letter as if you are a foreign exchange student living in America. Pretend you are writing to your family in your homeland and you must explain an American custom they know nothing at all about. To write a convincing letter, you must examine the American custom through...
August 18, 2016

English II
Explain how your mystery/legend contains the following literary elements: I chose Atlantis as my mystery/legend. I am not sure what they mean when they say scene. My answer is as follows. a. Setting b. Plot c. Characters d. Conflict e. Scene The legend/mystery of Atlantis ...
August 17, 2016

English II
No, I am not expecting anyone to do the work for me. I have answered three questions and would like to get the opinion as to whether I am doing it correctly.
August 16, 2016

English II
1. Explain the difference between a mystery and a legend. 2. Create a list of at least five (5) of these proven and unproven beliefs about your chosen event. 3. Explain why each of the items in the list are proven or unproven. 1. A mystery is something that remains unexplained...
August 16, 2016

math
Ravinder surveyed 36 student in the school. nine of them said they would attend the dance. if the school has 900 students, how much can Ravinder expect to attend the dance.
July 26, 2016

American History
what are the biggest challenges facing the average American citizen today? I feel that the biggest challenges facing the average American today include lack of jobs, state of our economy, terrorism, and gun violence. Unfortunately in America today wages are not being able to ...
July 26, 2016

American History
how does the foreign oil situation affect Americans today? Oil dependency is a huge issue in today's world. Between oil fracking destroying our environment, creating earthquakes, and oil spills destroying our oceans and potential drinking water, i feel oil is simply is not...
July 21, 2016

American History
how does the foreign oil situation affect Americans today? Americans continue to rely heavily on foreign oil. The United States consumes about twenty million of the roughly eighty million barrels of oil consumed daily in the world, and three-fifths of that is imported.
July 21, 2016

American History
The statement above is my answer.
July 21, 2016

American History
We choose what are the biggest challenges facing the average American citizen today and then they want us to explain.
July 21, 2016

American History
What are the biggest challenges facing the average American citizen today? Jobs, state of the economy, along with terrorism on our soil. Budgets cuts in our Defense has led to inefficient weapons available to the soldiers to fight wars here in America or Overseas. Wage incomes...
July 21, 2016

American History
how does the foreign oil situation affect Americans today? Americans continue to rely heavily on foreign oil. The United States consumes about twenty million of the roughly eighty million barrels of oil consumed daily in the world, and three-fifths of that is imported.
July 21, 2016

American History
Describe the impact of the social changes of the 1960's on today's culture in America? Female activists demanded more rights for women, whose role in society began to change. Today women are head of big company's. The birth control pill and other contraceptives ...
July 19, 2016

American History
How did the policies set forth by President Johnson's administration affect our country's economy today? Explain. The policy to continue the war in Vietnam by Lyndon Johnson strengthened the military Industrial Complex that is costing taxpayer Billions today.
July 19, 2016

history
Is it a good idea for consumers to spend on credit cards? Why or Why not? Can it be both good and bad to buy on credit? It is not a good idea for consumers to spend on credit cards because it gives a false sense of security you have money that you really do not have. It can be...
June 11, 2016

history
Compare and Contrast American Expansion in the late 1800's with the expansion in the 1900's. (How the expansion efforts were the same and how they were different.) During the expansion of the late 1800's and early 1900's shared similarities in that the ...
June 10, 2016

American History
For centuries Americans had been moving westward and had been developing a continent. The Realization that all the frontier land was gone and since the Civil War there was an incredibly productive industrial complex that Americans had built. This brought a belief that ...
June 10, 2016

American History
Compare and Contrast American Expansion in the late 1800's with the expansion in the 1900's. (How the expansion efforts were the same and how they were different.) During the expansion of the late 1800's and early 1900's shared similarities in that the ...
June 10, 2016

Math
A 104 ft. ladder is leaned against a wall. If the base of the ladder is 40 ft. from the wall, how high up the wall will the ladder reach? 104ft.^2 + b^2 = 40ft.^2 10,816 + b^2 = 1,600 0 + b^2 = 10,816 - 1,600 = 9,216 C^2 = SQRT of 9,216 or 96ft.
June 4, 2016

math
A 104 ft. ladder is leaned against a wall. If the base of the ladder is 40 ft. from the wall, how high up the wall will the ladder reach? 104ft.^2 + b^2 = 40ft.^2 10,816 + b^2 = 1,600 0 + b^2 = 10,816 - 1,600 = 9,216 C^2 = SQRT of 9,216 or 96ft.
June 3, 2016

math
Mike rides his bike 33 km south and then 56 km west. How far is the shortest distance from his starting point? 33^2 + 56^2 = C^2 1,089 + 3,136 = C^2 4,225 km = C^2 C^2 = SQRT of 4,225 km or 65 km
June 3, 2016

math
A 12ft. pole casts a shadow of 16ft. What is the distance between the end of the shadow and the top of the pole? A^2 + 12ft^2 = 16^2 A^2 + 144 = 256 A^2 + 0 = 256 - 144 A^2 = 112 A^2 = SQRT of 112 or 10.58ft.
June 3, 2016

Health
Two to three weeks.
May 25, 2016

history
Compare the civil reform of the 1800's to social reform today. civil reform of the 1800's led to the passing of the Pendleton Act of 1833 that gave government jobs based on qualification of the candidate, and not political belief. Social reform today is built on the ...
May 24, 2016

History
Compare the civil reform of the 1800's to social reform today. civil reform of the 1800's led to the passing of the Pendleton Act of 1833 that gave government jobs based on qualification of the candidate, and not political belief. Social reform today is built on the ...
May 24, 2016

History
Many are fighting for equal pay, healthcare costs, etc. When I mention transcends I mean it falls into many different categories.
May 24, 2016

History
Compare the civil reform of the 1800's to social reform today. civil reform of the 1800's led to the passing of the Pendleton Act of 1833 that gave government jobs based on qualification of the candidate, and not political belief. Social reform today is built on the ...
May 24, 2016

American History
Compare the civil reform of the 1800's to social reform today. civil reform of the 1800's led to the passing of the Pendleton Act of 1833 that gave government jobs based on qualification of the candidate, and not political belief. Social reform today seeks to change ...
May 24, 2016

math
Given that sinx = cos(x+20o) write tanx in terms of sin20o and cos 20o. a) Hence find the values of tan x. b) Find the general solution of 3sec2y=5(1+tany)
May 24, 2016

Math
A car traveled 20 kilometers at 2pm and 90 km at 5pm pm how fast did the car travel? Round to the nearest whole number
May 23, 2016

Math
Why is the Cartesian System unique? The Cartesian System is unique because you can specify any point uniquely in a two or three dimensional space by using two or three Cartesian coordinates
May 10, 2016

Riddle
There are many keys but can't open a single door
May 10, 2016

American history
Who do you think profited the most during the industrialization? I think the middle class of factory owners, shippers, and merchants benefited the most because American cities allowed many middle-class Americans to live a more glamorous lifestyle with all the new technology ...
May 9, 2016

math
You're welcome.
May 4, 2016

Geometry (check my work)
A scoop of ice cream shape like a sphere with a diameter of 6 cm is placed on an ice cream cone the has a diameter of 5 cm and a height of 9 cm, show that the cone is or is not big enough to hold all of the ice cream when it melts ? Answer- I said the cone is too small ...
May 3, 2016

Math (Geometry)
what is the exterior angle sum of a 500 gon? I got .72 but I'm not sure if this is right, help would be very grateful :)
April 16, 2016

Math
Jack is going to fill his beach ball with water. The radius of the ball is 24in. How much water will it take to fill the beach ball? 4/3(3.14) 4.19 (2)^3 4.19 (8) 33.52 Instead of using 24in. I used 2ft. Instead since 24in. Equals 2 ft.
April 5, 2016

Math
Jack is going to fill his beach ball with water. The radius of the ball is 24in. How much water will it take to fill the beach ball? 4/3(3.14) 4.19 (2)^3 4.19 (8) 33.52 Instead of using 24in. I used 2ft. Instead since 24in. Equals 2 ft.
April 5, 2016

Math
Jack is going to fill his beach ball with water. The radius of the ball is 24in. How much water will it take to fill the beach ball? 4/3(3.14) 4.19 (2)^3 4.19 (8) 33.52 Instead of using 24in. I used 2ft. Instead since 24in. Equals 2 ft.
April 5, 2016

Math
Jack is going to fill his beach ball with water. The radius of the ball is 24in. How much water will it take to fill the beach ball? 4.19 (2)^3 4.19 (8) 33.52 Instead of using 24in. I used 2ft. Instead since 24in. Equals 2 ft.
April 5, 2016

Math
24 in. Equals 2 ft.
April 5, 2016

Math
Jack is going to fill his beach ball with water. The radius of the ball is 24in. How much water will it take to fill the beach ball? 4.19 (2)^3 4.19 (8) 33.52
April 5, 2016

Math
Jack is going to fill his beach ball with water. The radius of the ball is 24in. How much water will it take to fill the beach ball? 4/3 X 3.14 = 4.186 4.186 (24^3) 4.186 X 13,824 Answer: 57,867.264
April 5, 2016

Math
Jack is going to fill his beach ball with water. The radius of the ball is 24in. How much water will it take to fill the beach ball? V = 4/3 (pi)(r^3) 4/3 x 3.14/1 = 1.395 1.395(24^3) 1.395 x 13,824 V = 19,284.48
April 4, 2016

Math
Jack is going to fill his beach ball with water. The radius of the ball is 24in. How much water will it take to fill the beach ball? V = 4/3 (pi)(r^3) 4/3 x 3.14/1 = 1.395 1.395(24^3) 1.395 x 13,824 V = 19,284.48
April 4, 2016

Math
Find service area of a cylinder Formula = 2(pi x r^2) + 2(pi)(r)(H) Diameter = 1ft. Height = 4ft. 2(3.14 x 6^2) + 2(3.14)(6)(4) 2(113.04) + 6.28 x 24 226.08 + 150.72 SA = 376.8 ft.
April 4, 2016

maths
if an object is 1.9 metres wide, how many metres will it look from 34 metres away plewse. thanks. obviously alot smaller bit need the answer or at least the calculation so i can work it out. all help appreciated. sue
March 30, 2016

maths
hi there. i mean how big will the 1.9 metre wide object look from 34 metres away. answer in metres please. or can you give me the mathematical calculation to use to work it out. many thanks for your help.,sue
March 30, 2016

maths
i stand 34 metres away from an object 1.9 metres wide. how big will it look. thanks
March 30, 2016

Earth Science (check answers)
Describe the importance of maintaining the ocean ecosystem. It is important to maintain because the ocean ecosystems because it provides reefs that support a complex ecosystem of ocean organisms that live and help each other to survive. Virtually every phyla on Earth is ...
March 17, 2016

Science
Describe the importance of maintaining the ocean ecosystem.
March 16, 2016

Science
Where on the ocean floor will you find the greatest amount of living organisms? Answer: the coral reefs The greatest amount of living organisms can be found in the photic zone where sunlight can penetrate water, and where organisms that photosynthesize depend on sunlight. ...
March 15, 2016

Science
Where on the ocean floor will you find the greatest amount of living organisms? Answer: the coral reefs The greatest amount of living organisms can be found in the photic zone where sunlight can penetrate water, and where organisms that photosynthesize depend on sunlight. ...
March 15, 2016

Science
Where on the ocean floor will you find the greatest amount of living organisms? Answer: the coral reefs The greatest amount of living organisms can be found in the photic zone where sunlight can penetrate water, and where organisms that photosynthesize depend on sunlight. ...
March 15, 2016

Earth science
Where on the ocean floor will you find the greatest amount of living organisms? Answer: the coral reefs
March 15, 2016

Math
If a parallelogram has a base of 13 mm and an area of 78 mm2 what is the height? 78/13 = 6 H = 6mm
March 12, 2016

Math
4 km
March 12, 2016

Math
Two bases of a trapezoid equal 16 km and its area equals 32 km^2. What is its height? 16/2 = 8 32/8 = 4 (8 + 8) x 4 16 x 4 = 64 64/2 = 32 Height = 4 km^2
March 12, 2016

Business math
how long will it take 2,000 to grow to 3,000 if the interest rate used is 6% compounded semi-annually? answer to the nearest half-year. thank you!
March 11, 2016

Geometry
Area of a rhombus is 72 ft. and the product of the diagonals is 144 ft. What is the length of each diagonal?
March 10, 2016

Geometry
Area of a rhombus is 72 ft. and the product of the diagonals is 144 ft. What is the length of each diagonal?
March 10, 2016

Math
Area of a rhombus is 72 ft. and the product of the diagonals is 144 ft. What is the length of each diagonal?
March 10, 2016

Math
Area of a rhombus is 72 ft. and the product of the diagonals is 144 ft. What is the length of each diagonal?
March 10, 2016

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