Tsunayoshi
Popular questions and responses by Tsunayoshi
Math
1. A rangers tower is located 44m from a tall tree. From the top of the tower, the angle of elevation to the top of the tree is 28 degrees and the angle of depression to the base is 36 degrees. How tall is the tree? 2. An engineer determines that the angle
asked on February 6, 2014 
math
A television camera is located along the 40 yard line at a football game. If the camera 20 yards back at the sideline through what angle should it be able to pan in order to cover the entire field of play including end zones which are 10 yards deep
asked on June 23, 2014 
Math
1. The base of an isosceles triangle is 14 cm in length and the angle opposite the base measures 86 degrees. Find the length of each of the congruent sides. 2. A ski slope has a 42 degrees incline and 170 yard long. Find the vertical drop.
asked on February 4, 2014 
Chemistry
Consider the burning of LPG (propane C3H8)which produces carbon dioxide (CO2) and water vapor (H2O). The balanced chemical equation involving the reaction is C3H8+5O2= 3CO2+4H2O Suppose 1.5 moles of C3H8 will be used, assume the following: a. How many
asked on February 10, 2014 
Physics
1. What is the pressure on the bottom of an aquarium 0.30 m deep filled with water? 2. The plug in a bathtub is 10 cm^3in area and is 0.8 m below the surface of the water. What is the force of the water on the plug? 3. If a column of oil 0.89 m high in
asked on September 3, 2014 
math
6. Joe played golf with Sam on a speacial par 3 course.. They played nine holes. The expected number of strokes on hole was 3. A birdie is 1 below par. On nine holes Frank made par on 1 hole, got 2 birdies, one eagle, four bogies and one double bogie. How
asked on July 31, 2014 
chemistry
a.Given the equation: 2CaCO3 + 2SO2 + O2 > 2CaSO4 + 2CO2 What is the actual yield of CO2 if 7.5 mol of O2 gives a percent yield of 80%? b. The pollutant sulfur dioxide can be removed from the emissions of an industrial plant by the reaction with calcium
asked on July 27, 2014 
Physics
Rain is falling vertically down on a car moving at 11 m/s. Tracks made by the raindrops on the side window of the car are inclined at 55 degrees with the vertical. Find the speed of the raindrop relative to the ground.
asked on November 3, 2013 
Algebra
Find the coordinates of the midpoint of the hypotenuse of the right triangle whose vertices are A (1,1) B (5,2) C (4,6) and show that it is equidistant of each of the vertices..... And can you please tell me how to prove it in drawing....
asked on June 9, 2014 
Physics
Rain is falling vertically down on a car moving at 11 m/s. Tracks made by the raindrops on the side window of the car are inclined at 55 degrees with the vertical. Find the speed of the raindrop relative to the ground.
asked on November 2, 2013 
Physics
Rain is falling vertically down on a car moving at 11 m/s. Tracks made by the raindrops on the side window of the car are inclined 55 degrees with the vertical. Find the speed of the raindrop relative to the ground.
asked on November 2, 2013 
math
1. A submarine was suituated 800 feet below sea level. If it ascends 250 feet, what is it new position 2. Metal mercury at room temperature is a liquid. Its melting point is 39°C. The freezing point of alcohol is114°C. How much warmer is the melting
asked on July 31, 2014 
Physics
A player kicks a football from the ground at an angle of 42 degrees above the horizontal with an initial speed of 23m/s. a. How high will the ball rise? b. How long will it be in the air? c. What will be its range?
asked on November 1, 2013 
chemistry
A student used 3.27g of Zn to react with excess HCl and obtains 6.47g ZnCl2. What is the percent yield?
asked on July 27, 2014 
Physics
A bullet is fired horizontally with a speed of 500 m/s from a height of 1.5 m above the ground toward a target 50m away on the ground. How high should the target be placed to receive the bullet?
asked on November 1, 2013 
Physics
A toy slides down an inclined plane which makes an angle of 60 degrees with the horizontal. It starts from rest and achieves a final velocity of 8 m/s in 5 seconds at the bottom of the plane. a. What is the acceleration down the plane? b. What is the
asked on November 2, 2013 
Physics
A boat moves north at a uniform velocity of 15 mph relative to the shore from one side of the river to a point directly opposite on the other side of the river. The water in the river flows east at a constant speed of 5mph parallel to the shore. What is
asked on November 1, 2013 
Physics
A 2.75kg block of copper at 22C dropped into 5.25kg of water at 12.0C. What is the final temperature of the mixture? Specific heat: water = 4.19J/kgK copper = 390J/kgK
asked on February 6, 2014 
Physics
A calorimeter with specific heat of 490x10^2J/kg^1K^1 has a mass of 2.00x10^1kg that contains 3.00x10^1kg of liquid water at 40C. If 5.00x10^2kg of ice at 0C is dropped into the water. Find the final temperature of the mixture where the ice has melted
asked on February 9, 2014 
Physics
A children merry go round in the consist of 300 kg solid horizontal disk of radius 8.5 m. It rotates at a speed of .25 revolution per second while a person of mass 150 km takes a ride at the edge of the disk. How fast will the disk be rotating if the
asked on December 14, 2013 
Math
Find the equation of the graph of all points such that the difference of their distances from (10,0) and (2,0) is always 1.
asked on September 14, 2014 
math
The sides of the triangle are on the of x+y+6=0, x+2y4=0, 3x+y+2=0. Find the vertices of the triangle
asked on June 25, 2014 
Physics
A resting eagle on a tree top finds a rabbit on the ground at a distance of 50 m from the base of the tree. The eagle applies a constant horizontal speed and uses gravity to descend. It catches the rabbit in 2.5 seconds. a. What is the height of the tree
asked on November 2, 2013 
Physics
In a physics experiment, 250g of water is placed in a 50g calorimeter cup made of aluminum when both are at 15C. Steam at 100C is completely absorbed by passing it through the water, raising the temperature of water and cup to 45C. Find the mass of steam
asked on February 4, 2014 
Physics
A boat sails in a direction 60 degrees north of east with a constant acceleration of 1.5 m/s^2, starting from rest. What are its northerly and easterly components of the velocity after 15 seconds?
asked on November 2, 2013 
Physics
A baseball is projected horizontally from the top of a building with an initial speed of 15 m/s. The ball strikes the ground 25 m from the base of the building. a. How long will it be in the air? b. How tall is the building?
asked on November 2, 2013 
chemistry
Ammonium nitrate is used in explosives and is produced from the reaction of ammonia and nitric acid. If 15 kg of ammonia give an actual yield of 65.3 kg of ammonium nitrate, what is the percent yield? The calculated yield of ammonium nitrate for the
asked on July 27, 2014 
math
To discourage guessing, Mrs. Lopez made a test  grading scheme shown at the right. On a 100item test, Jessa left 11 answers blank and answered and 48 question correctly. What is her score? It is problem solving involving addition in integers
asked on June 30, 2014 
Algebra
Show that the following points are collinear: A (5,2) B (3,2) C (9,4)
asked on June 5, 2014 
Physics
After a snow storm, your driveway of area 50m^2 is covered with a layer of ice 10cm high at a temperature of 0C. You decide to use sunlight falling at 200 W/m^2 to melt the ice? Is it good idea? (Density of ice is 920kg/m^3 and 1 cal = 4.184 J.
asked on February 4, 2014 
Physics
An alloy of mass 225g is heated to 550C. It is quickly placed in 450g of water at 12C. The water is contained in an aluminum calorimeter cup of mass 210g. The final temperature of mixture is 31.7C. Specific heat of aluminum is 0.215 cal/gC. Find the
asked on February 3, 2014 
math
2. Find two consecutive prime numbers less than 40 such that the sum of their opposites 5. 3. Insert plus (+) or minus () on the digits 1 to 9 asshown to obtain 100. 1 2 3 4 5 6 7 8 9. How many can you form?
asked on June 30, 2014 
math
What is the answer of X' cap Y What is the answer of Y' U Z' What is the answer of (X \ Z ) ' What is the answer of ( Y \ Z ) ' U X ' X={10 ,20 ,30 ,40 ,50} Y={30 ,50, 60, 90, 100} Z={40, 50, 60, 70, 80} U={200, 300}
asked on June 15, 2014 
Physics
A 100W incandescent lamp of filament area 45 mm^2, emits all its energy by radiation into the surrounding space of room at 22C. If the filament emissivity is 0.32, find the temperature of the filament?
asked on February 2, 2014 
Physics
In a physics experiment, 250g of water is placed in a 50g calorimeter cup made of aluminum when both are at 15C. Steam at 100C is completely absorbed by passing it through the water, raising the temperature of water and cup to 45C. Find the mass of steam
asked on February 2, 2014 
Physics
A rock is thrown from the ground at a speed of 22m/s and an angle of 55 degrees above the horizontal. Find the velocity and height of the rock after 2 seconds.
asked on November 1, 2013 
Physics
A rock is thrown from the ground at the speed of 22 m/s and an angle of 55 degrees above the horizontal. Find the velocity and the height of the rock after 2 seconds
asked on November 1, 2013 
Physics
A ship travels north at 6m/s. The wind travels west at 2.5 m/s. In what direction will the pennant of the ship on the masthead fly?
asked on November 1, 2013 
Math
draw the following parabola: a. principal axis parallel to x; LR=1; passing through (3,1) and (5,5); opens to the right. b. principal axis parallel to x; passing through (0,4), (0,1) and (6,7)
asked on August 13, 2014 
computer
What are the steps in formatting texts?
asked on June 17, 2014 
Physics
A rock is thrown from the ground at a speed of 22 m/s and an angle of 55 degrees above the horizontal. find the velocity and height of the rock after 2 seconds
asked on November 1, 2013 
Math
Change the following to the standard equation of the ellipse 1. 5x^2 + 3y^2 = 15 2. x^2 + 12y^2 = 16 3. 3y^2 + 4x^2 = 3 And please can you give the value of a, b and c of this equations... so that I can sketch it....
asked on August 25, 2014 
Computer
Give 10 written information in an address book.
asked on November 1, 2013 
science
what is the importance of solid solutions and liquid solutions found at home
asked on June 9, 2014

math
What coprdinates will i use?
posted on June 23, 2014 
math
Thank you
posted on June 17, 2014 
Algebra
I mean is to get the distance of A B C you used distance formula not slope...
posted on June 9, 2014 
Algebra
What is the solution when the formula used is distance between points??
posted on June 9, 2014 
Physics
How did you get the 8hrs and 3600 sec/hr??
posted on February 4, 2014 
Physics
How long will it take to melt the ice?
posted on February 4, 2014 
Physics
Can you elaborate more??
posted on November 2, 2013 
Physics
^ means???
posted on November 1, 2013 
Physics
What is the range?
posted on November 1, 2013 
Physics
Thank you....
posted on November 1, 2013 
Physics
I don't know the time??
posted on November 1, 2013 
Physics
Can you elaborate more?? I don't understand it..
posted on November 1, 2013