Tuesday
July 29, 2014

Posts by me


Total # Posts: 1,066

Science
24.62 g of nickel heated and then immersed in 200ml of water. the temperature of the water rose 22.50c to 32.20c.The specific heat of NI is .470J/g*C. What is the temperature of the Ni before it is immersed in the water?

Science
Strong

Engineering Fund.
Since the force 235 N is at an angle, you want it to be parallell with the ground. To do that you do the cosine of the angle multiplied by the force. So 235*cos34.8 = 192.97 N Using F=ma 192.97=19a so a= 10.1563 m/s^2

philospy 103
In the conditional "P →Q," "P" is a my answer is necessary condition for P

health
What is the impact of health care cost for the individual consumer? The employer?

health
What can consumers do to reduce health care costs?

Chemistry
C3H8 + 5O2 --> 3CO2 + 4H2O what are the oxidation #'s of each? What is being oxidized? reduced? Please explain

Statistics
A local fire station receives an average of 0.5 rescue calls per day. Find the probability that on a randomly selected day, the fire station will receive fewer than two calls. (Round your answer to the nearest thousandth.)

Geometry
11. What is the bearing of the plane? 12. What is the smallest angle of the triangle? 13. What is the largest angle of the triangle? 14. What is the remaining angle of the triangle? 15. What is the ground speed of the plane? I am lost on these

Math
C(5) would be the cost to make 5 sailboats, so substitute 5 for 'x' (2 * 5) + 20 10 + 20 = 30; since the question says the cost is in thousands of dollars, then C(5) is how much it costs the company to make 5 sailboats, which is $30,000 or $6,000 / sailboat.

alegbra
To find the product of two fractions, you simply multiply across top & bottom. But first, you can see that 12 and 15 have a common factor of 3. So, (11 / 15) * (12 / 7) then becomes: (11 / 5) * (4 * 7) Multiplying straight across, you get: (11 * 4) / (5 * 7) = 44 / 35

math/algebra
I don't know where 'bobpursley' learned his math, or why he keeps answering math questions on this site incorrectly, but here's how it's actually done. There are 60 minutes in an hour, so 55 minutes can be expressed, very simply, as 55 / 60 To reduce this f...

math
20% = 0.2 If his sticker collection, at the moment, has 1400 stickers, then 0.2 * 1400 = 280 stickers.

Math (grade 10)
To find the coordinates of the lamp, you have the find the midpoint of the path. The path has two endings: one at (-25, 20) one at (40, 36) For the x-coordinate, add up all x-coordinates and divide them by 2 -- [(-25 + 40) / 2] = (15 / 2) = 7.5 For the y-coordinate, add up all...

Algebra
There are 2 halves in the course: 1st half has 120 points 2nd half has 140 points -- for a grand total of 260 points If a student earns 81% of the points in the 1st half, she earns 0.81 * 120 points -- 0.81 * 120 = 97.2 points If there are 260 total points in the class, and th...

college math
If you're talking about the median, then you're missing a number in your list. Your list is: 1400, 1550, 1700, 2500, 7000 which has 5 numbers. The median (the middle number) would be the 3rd, which in this case is 1700. If you want the median to be [(1700 + 2500) / 2] ...

college math
If both terms are equal, that is: x / 60 = 9 / 5 Then, x is to 9, as 60 is to 5. 60 = 5 * 12 so, x = 9 * 12 thus, x = 108.

business law
Fred and Zuma Palermo contacted Colorado Carpet Installation, Inc., for a price quotation on providing and installing new carpeting and til­ing in their home. In response, Colorado Carpet submitted a written proposal to pro­vide and install the carpet at a certain pric...

Science
what happens when you increase the thermal energy of water

physics
An engine absorbs 2000J of heat from a hot reservoir and expels 750J to a cold reservoir during each operating cycle. What is the efficiency of the engine?

Socail Studies
senior

health
c all day

chemistry
What are the skeleton equations for Dicarbon hexahydride gas + oxygen gas --> carbon dioxide gas + gaseous water And Solid barium and chlorine gas react to produce solid barium chloride

Statistics Question
the answer is 1. thank

biology
bill is wrong. It is B. simple sugars. Have fun on study island

Math
They have 20 pieces of 12 foot lumber. If they need 2 screws for every 3 feet of lumber, how many screws do they need?

English 11
BELIEVE ROSCOE!!1

physics
A person, with his ear to the ground, sees a huge stone strike the concrete pavement. A moment later two sounds are heard from the impact: one travels in the air and the other in the concrete, and they are 1.7 s apart. How far away did the impact occur?

Economics
If all company in a certain industry are earning economic profits now, in long run what will happen?

physics
V=d/t or t=d/v t=138/25 t=5.52 seconds

Algebra 2
You are cooking chili. When you take it off the stove, it has a temperature of 205°F. The room temperature is 68°F and the cooling rate of the chili is r = 0.03. How long will it take to cool to a serving temperature of 95°F

MATH
A gyroscope of radius 18 cm rotates 35 times per minute. What is the linear velocity at a point on the edge of the gyroscope?

College Calculus
50 pi gorillas

Math
fabric that is 56 1/4 cut into 3 3/4

chemistry
How many grams of carbon dioxide can form when a mixture of 3.60 g ethylene (C2H4) and 2.70 g of oxygen is ignited, assuming complete combustion to form carbon dioxide and water?

caculus
ʃ dx/x^4(1/x^2-2)^2 please help i need solution..i got the answer.. answer= 1/6(1-2x^3)=c thanks

calculus
Find the volume of the solid generated by revolving the region bounded by the graphs of the equations about the line x = 6. y = 6 − x y = 0 y = 5 x = 0

math
State 15.70 City 7.85 Retirement 23.55 FICA 42.25 Income 90.33 ------- Total Deductions 179.68 785.00 - 179.68 = $605.32

math
Part 1: Find the area of a rectangular object which has a length of 5√8 inches and a width of 2√5 inches. (3 points) Part 2: Explain, in complete sentences, how you arrived at the simplified answer and give the final solution in simplified radical form. (2 points) ...

PHI 103
#2 is sound deductive. The book says that it is.

physics
So is the formula for r: r = (1/4)(v^2/g)? or (1/4 v^2)/g ? sorry I am asking so much

physics
So the first formula period=2pi*sqrt(r/g) is incorrect? I am just confused I am sorry

physics
I am just confused on the way some of these are written out like in the period equation you just gave, is pi multiplied by v and then divided by g or is the whole quantity given by v/g multiplied by pi?

physics
Is the formula r = (1/4)(v^2/g)? or (1/4 v^2)/g ?

physics
A pendulum consists of a massless rigid rod with a mass at one end. The other end is pivoted on a frictionless pivot so that it can turn through a complete circle. The pendulum is inverted, so the mass is directly above the pivot point, and then released. The speed of the mass...

Physics
A pendulum consists of a massless rigid rod with a mass at one end. The other end is pivoted on a frictionless pivot so that it can turn through a complete circle. The pendulum is inverted, so the mass is directly above the pivot point, and then released. The speed of the mass...

pre-algebra
3.7x-3.5=x+5.4 0.7(0.9x+3)-0.8(1.6x-0.7)=x

Physics help pleaseeeeee
An oscillator with a mass of 281 g has a speed of 119.1 cm/s when its displacement is 2.80 cm and 34.2 cm/s when its displacement is 7.80 cm. What is the oscillator's maximum speed (in m/s)?

Physics
A 103.0 g mass attached to a horizontal spring oscillates at a frequency of 2.52 Hz. At t = 0 s , the mass is at x = 6.31 cm and has a velocity of -11 cm/s. Determine the phase constant in rad. Determine the total energy in J. Determine the position (in cm) at t = 1.55 s.

Physics help please
An oscillator with a mass of 281 g has a speed of 119.1 cm/s when its displacement is 2.80 cm and 34.2 cm/s when its displacement is 7.80 cm. What is the oscillator's maximum speed (in m/s)?

Physics
I know one oscillation is 48seconds (I was given a sinusoidal graph to determine the previously stated values from)

Physics
How do you calculate the phase constant in degrees given amplitude and frequency?

piece of doo-doo
piece of doo-doo+doo=doo

computer networking
what kind of network information can you gather from issuing commands on a router or switch?

logic
Truth tables can determine which of the following?

Physics please help!
Yes, thank you but as I said, I still can not figure out from what you gave me so maybe someone else will explain better (figuring out the mass of the star that is).

Physics please help!
You are the science officer on a visit to a distant solar system. Prior to landing on a planet you measure its diameter to be 2.070E+7 m and its rotation to be 19.8 hours. You have previously determined that the planet orbits 1.590E+11 m from its star with a period of 368.0 Ea...

Physics help please
While visiting Planet Physics, you toss a rock straight up at 13.6 m/s and catch it 3.50 s later. While you visit the surface, your cruise ship orbits at an altitude equal to the planet's radius every 340.0 minutes. What is the mass (in kg) of the planet?

trig
Solve the equation for exact solutions over the interval [0, 2pi]. 4 cotx+2=-2

Physics help please
I did that and it still did not come out correctly.

Physics help please
You are the science officer on a visit to a distant solar system. Prior to landing on a planet you measure its diameter to be 2.070E+7 m and its rotation to be 19.8 hours. You have previously determined that the planet orbits 1.590E+11 m from its star with a period of 368.0 Ea...

chemistry
4132.23

Physics help please
You are the science officer on a visit to a distant solar system. Prior to landing on a planet you measure its diameter to be 2.070E+7 m and its rotation to be 19.8 hours. You have previously determined that the planet orbits 1.590E+11 m from its star with a period of 368.0 Ea...

ENGLISH SENTENCE CHECK
thanks

ENGLISH SENTENCE CHECK
IS MY SENTENCE CORRECT AND WORDS USED RIGHT?? What does it mean to tie the knot of renunciation? It means all the promises made to one another by a couple in the marriage ceremony have been broken; therefore, they choose divorce.

English topic sentence please pick one
SO IS MY SENTENCE CORRECT?? What does it mean to tie the knot of renunciation? It means all the promises made to one another by a couple in the marriage ceremony have been broken; therefore, they choose divorce.

English topic sentence please pick one
so is tying the knot of renunciation means getting a divorce??? or untying the knot of connection

English topic sentence please pick one
like when you're getting married and you take vows meaning you're untying the knot of renunciation

English topic sentence please pick one
it means The formal rejection of something, typically a belief, claim, or course of action.

English topic sentence please pick one
which one is better?

English topic sentence please pick one
or What does it mean to untie the knot of renunciation? It means all the promises made to one another by a couple in the marriage ceremony have been broken; therefore, they choose divorce.

English topic sentence please pick one
or What does it mean to untie the knot of renunciation? It means all the promises made to one another by a couple in a marriage ceremony have been broken; therefore, they choose divorce.

English topic sentence please pick one
What does it mean to untie the knot of renunciation? It means all the promises made to one another by a couple in a marriage ceremony have been broken which ends with a divorce. or What does it mean to untie the knot of renunciation? It means getting a divorce; all the promise...

Physics help pleaseeee
A horizontal spring with a spring constant of 200.0 N/m is compressed 25.0 cm and used to launch a 3.00 kg block across a frictionless surface. After the block travels some distance, the block goes up a 32 degree incline that has a coefficient of friction of 0.25 between the b...

chemistry
calculate the number of moles of potassium iodate (KIO) that were present in the 5.00mL aliquot of standar potassium iodate solution Can someone please show me the workings to do questions like this one? thanks =]

Physics help pleasee
How much power is generated by a 90 kg sprinter that accelerates up to 9.0 m/s in 2.8 seconds?

Physics
nevermind I forgot the divide the angle...thanks!

Physics
It still did not come out correctly I took cos60=.2/x and got .4 for the distance then did 3*.5*(.4)^2 and got .24 and then did 1/2(.24)(9.42)^2 and got 10.66J which is incorrect...

Physics
This question was posted earlier but the explanation given was confusing. The three 500 g masses in the daigram are connected by massless, rigid rods to form a triangle. What is the triangle's rotational energy (in J) if it rotates at 1.50 rev/s about an axis through the c...

Physics please help
How far from the center of the Earth (in km) is the center of mass of the Earth + satellite system if the satellite has a mass of 6560 kg and is in orbit 46200 km above the surface of the Earth. The mass of the Earth is 5.98 * 10^24 kg and the radius of the Earth is 6370 km.

Physics :(
What is the angular momentum (in kg*m*m/s) of a 880 g symmetrical rotating bar which is 2.70 m long and spinning at 185 rpm about the center of the bar?

Physics help please!
The three 500 g masses in the daigram are connected by massless, rigid rods to form a triangle. What is the triangle's rotational energy (in J) if it rotates at 1.50 rev/s about an axis through the center? (Diagram shows equilateral triangle with 500g masses at each point,...

Physics help!
How far from the center of the Earth (in km) is the center of mass of the Earth + satellite system if the satellite has a mass of 6560 kg and is in orbit 46200 km above the surface of the Earth. The mass of the Earth is 5.98 * 10^24 kg and the radius of the Earth is 6370 km

physics
(1.6+ 1.0)*1.6)/1.0

proofreading English
Public schools vs. Private schools Private and public schools education differs in several ways. There are many differences of both types of schools such as their academic programs, class sizes and admissions requirements that makes a private school better than a public school...

proof read and make corrections
also how shouold i write my conclusion?

proof read and make corrections
Public schools vs. Private schools Private and public schools education differs in many ways. There are many differences of both types of schools such as their academic programs, class sizes and admissions requirements that makes a private school better than a public school. ...

proof read and make corrections
Public schools vs. Private schools Private and public schools education differs in many ways, there are many differences of both types of schools such as their academic programs, class sizes and admissions requirements that makes a private school better than a public school. ...

Please proofread my essay and make corrections
Public schools vs. Private schools Private and public schools education differs in many ways, there are many differences of both types of schools such as their academic programs, class sizes and admissions requirements that makes a private school better than a public school. ...

Please proofread my essay and make corrections
Public schools vs. Private schools Private and public schools education differs in many ways, there are many difference of both types of schools such as their academic reputation, class sizes and admissions requirements. Student’s performance in public and private schools...

Physics help pleaseee
A cable with 21.2 N of tension pulls straight up on a 1.10 kg block that is initially at rest. What is the block's speed (in m/s) after being lifted 2.42 m assuming that the local acceleration due to gravity is 9.80 m/s2?

Physics help
A particle moving along the y-axis has the potential eneryg function U = 6 * y3 J where y is in m. What is the y-component of the force on the particle at 0 m? What is the y-component of the force on the particle at 9 m? What is the y-component of the force on the particle at ...

calculus
find dy/dx by implicit differentiation 5/y+45/x=1

Physics
How do you get the velocity of a particle given a potential energy diagram and its mass?

Physics helppp
A 67.0 kg skateboarder wants to just make it to the upper edge of a "quarter pipe", a track that is one-quarter of a circle with a radius of 2.55 m. What speed (in m/s) does he need at the bottom assuming that the local acceleration due to gravity is 9.80 m/s2?

Please check my english hw
The ALL CAP words are used incorrectly. Choose the best word to replace them both: 1. Success is not measured ON a person's wealth or social status, but ON how much a person contributes to the welfare of others. a. in b. upon c. about d. by The ALL CAP word is a poor choic...

Please check my english hw
The ALL CAP words are used incorrectly. Choose the best word to replace them both: 1. Success is not measured ON a person's wealth or social status, but ON how much a person contributes to the welfare of others. a. in b. upon c. about d. by The ALL CAP word is a poor choic...

hw check eng
1.a 2.d 3.c 4.b 5.c 4.b

hw check eng
1. Jordan was studying for his criminal justice exam, and his brother offered to help him study. He went over each of the questions with him. a. Jordan was studying for his criminal justice exam, and his brother offered to help him study; so he went over each of the questions ...

HOMEWORk check english
1. D 2. A 3. A 4. D 5. D

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