Thursday
July 24, 2014

Posts by piper


Total # Posts: 40

Physics
1. A person runs 800. m at an average speed of 6.00 m/s and then the next 800. m at an average speed of 8.00 m/s. Calculate (a) the total time of travel and (b) the average speed. 2. A boy kicked a can horizontally from a 6.5 m high rock with a speed of 4.0 m/s. How far from t...

Math
Victor bought a brand new car for P750,000. If the value of the car depreciates 20%per year, what will it be worth during the fourth year?

Physics
Thank you

Physics
1. A rabbit and a turtle are practicing for their big race. The rabbit covers a 30.0 m practice course in 5.00 seconds; the turtle covers the same distance in 120 seconds. If the actual race is run on a 96.0 m course, by how many seconds will the rabbit beat the turtle? 2. Two...

Physics
On the way to class, you walk north and then west such that your resultant displacement is 290 m in a direction 250 west of north. Your average velocity is 2.0 m/s in the same direction as the displacement. Calculate (a) your walking time and (b) your average speed.

Physics
Carlo drives his car for a picnic by first going 105 km north to pick up his girlfriend and then 120.0 km east to reach the picnic groove. The whole trip takes 135 min. Calculate (a) Carlo’s average speed and (b) average velocity.

Physics
A motorist drives for 150 km from City A to City B in 2.5 hr. He makes the return trip in 2.0 hr. Find (a) the average speed for each half of the trip, (b) the average velocity for each half of the trip, (c) the average speed of the entire trip, and (d) the average velocity fo...

Physics
An airplane takes off at 9:00 A.M. and flies at 300. km/h until 1:00 P.M. At 1:00 P.M. its speed is increased to 400. km/h, and it maintains this speed until it lands at 3:30 P.M. What is the airplane’s average speed for the entire flight?

Physics
To qualify for the finals in a racing event, a race car must achieve an average speed of 225 km/h on a track with a total length of 1.4 km. If a particular car covers the first half of the track at an average speed of 205 km/h, what minimum average speed must it have in the se...

Physics
In 1926, Johnny Weissmuller set the men’s world 400.0-m swimming record in 4.00 min, 57.0 s. In 1966, Martha Randall set the women’s record in 4.00 min, 38.0 s. By how many meters would Martha have been beaten Johnny if they had raced each other?

English, Reading
i need help on a few questions from the book October sky/rocket boys so here they are: -name of the rockets (through chapters 1-8) and why did they name them that ? -what does sonny name his new launching site -who is valentine -why is the football team so upset -how does sonn...

english
Choose the sentence that has a subject complement. A. The day ended with many surprises. B. I felt much better. C. The nurse felt my pulse. D. We can't leave without seeing her. I think it's B.

math
what is the base of a parallelogram with the height 6and 5 eighths feet and area of 26 and a half

Math
What is 0.0185 as a fraction and a percent

social studies
why do they call the presidents wife the first lady

Chemistry
The Ka of a monoprotic weak acid is 3.29 × 10-3. What is the percent ionization of a 0.176 M solution of this acid?

chem
How many molecules of (CH3)2NH are needed to react completely with 2.00mg of H2C2O4? Help i don't understand this process!

chem
How many molecules of (CH3)2NH are needed to react completely with 2.00mg of H2C2O4? Help i don't understand this process!

chem
How many molecules of (CH3)2NH are needed to react completely with 2.00mg of H2C2O4? Help i don't understand this process!

chem
How many molecules of (CH3)2NH are needed to react completely with 2.00mg of H2C2O4? Help i don't understand this process!

Chem
In a titration process it takes 22.00 mL of nitric acid to neutralize 16.70 mL of 0.200 M calcium hydroxide solution. what is the balanced equation and what is the molarity of the acid. please explain

chemistry
What is the pH of a solution formed by mixing 400 mL of 0.025 M HCl with 600 mL of 0.015 M NaOH?

chemistry
What is the pH of a solution formed by mixing 400 mL of 0.025 M HCl with 600 mL of 0.015 M NaOH?

geometry
Quadrilateral JKLM is a rhombus. The diagonals intersect at N. If angle KNJ equals 8x + 6, find the value of x

language arts
I cant find the ourspace website, I need for this evenings home work I have search several search engines...Any suggestions please

math
math professor is thrown off the matthews bridges, height 240ft, by a disgruntled calculus class with an intitial upward velocity of 10ft/s a) assumign the acceleration dude to gravity is -32ft/s^2,find the macimum height of the professor. b) find the time before the professo...

math
a math professor is thrown off the matthews bridges, height 240ft, by a disgruntled calculus class with an intitial upward velocity of 10ft/s a) assumign the acceleration dude to gravity is -32ft/s^2,find the macimum height of the professor. b) find the time before the profess...

math
solve the initial value problems: 1- dq/dz = 2 + sinz, q(0)=5 2-dy/dx = (x^2 -2)x, y(2)=4 3-dy/dx = 4e^5^x + x, y(0)=4 4- dy/dx 3x + 2, y(3)= 2

calculus
solve the initial value problems: 1- dq/dz = 2 + sinz, q(0)=5 2-dy/dx = (x^2 -2)x, y(2)=4 3-dy/dx = 4e^5^x + x, y(0)=4 4- dy/dx 3x + 2, y(3)= 2

science
i need help with standard deviation and erro bars on graph, if i want to talk about my graph and mention the erro bars and what it means how do i do that?

SCIENCE
could you please help me on some information about this topic please. Ihave a presentation to do on this and i need scientific research or journals as references to add to my powerpoint. An Investigation of the Impacts of Current on Shoaling and schooling Behavior in Anchoa mi...

math
The average cost per item, C, in dollars, of manufacturing a quantity q of cell phones is given by C= (a/q) + b where a and b are positive constants a.Find the rate of change of C as q increases. What are its units? b. Currently, 5000 phones are being made and production is in...

Math
With time, t, in minutes, the temperature, H, in degrees Celsius, of a bottle of water put in the refrigerator at time t=o is given by H = 4 + 16e-.02t How fast is the water cooling initially? After 10 minutes? Include units in your answer

math
1. With time, t, in minutes, the temperature, H, in degrees Celsius, of a bottle of water put in the refrigerator at time t=o is given by H = 4 + 16e-.02t How fast is the water cooling initially? After 10 minutes? Include units in your answer

math
The average cost per item, C, in dollars, of manufacturing a quantity q of cell phones is given by C= (a/q) + b where a and b are positive constants a.Find the rate of change of C as q increases. What are its units? b. Currently, 5000 phones are being made and production is in...

MATH (CALCULUS) PLZ HELP
A common problem encountered by the oil industry is to determine the most cost-effective route to connect various wells in an oil fertile area. The attached map is a copy of a section of a U.S. Geographical Survey contour map with a wetland area outlined. An existing oil well...

Algebra
5 a steady process 6. m is the slope

math
1-show that 1-x/2 is the tangent line approximation to 1/ sqrt of 1+x near x=0 2-what is the local linearization of e^x^2 near x=1 3-find the tnagent line approximation of 1/x near x=1

Trig - check my answers plz!
1. (P -15/17, -8/17) is found on the unit circle. Find sinΘ and cosΘ Work: P= (-15/17, -8/17) cosΘ = a value P = (a,b) sinΘ = b value Answer: cosΘ = -15/17 sinΘ = -8/17 2. Should the triangle be solved beginning with Law of Sines or Law of Cosines...

government
main purpose for which the delegates are chosen.

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