Thursday

July 24, 2014

July 24, 2014

Total # Posts: 918

**Physics**

If a 1000-kg car was moving at 30 m/s, what would be its kinetic energy expressed in the unusual (for kinetic energy) units of calories? (1 cal = 4.186 J)

**Physics**

A 2.00-kg block of ice is at STP (0°C, 1 atm) while it melts completely to water. What is its change in entropy? (For ice, Lf = 3.34 ´ 105 J/kg)

**Physics**

A heat engine exhausts 3 000 J of heat while performing 1 500 J of useful work. What is the efficiency of the engine?

**Physics**

A 10-kg piece of aluminum (which has a specific heat of 900 J/kg×°C) is warmed so that its temperature increases by 5.0 C°. How much heat was transferred into it?

**physics**

Ok thank you

**physics**

This is my work :) (50miles/hr)x(1.609km/1mile)x(1000m/1km)x(1meter/60sec)x(1hour/60 min) =22.35 meter per second.

**physics**

what is 50 miles per hour in meters per second ?

**physics**

what is 50 miles per hour in meters per second?

**Physics**

(6.5 ft) x(1meter/3.281ft) =1.98 meters. Is this a correct way ?

**Physics**

A player height is 6.5 ft.What is his height in meters ?( 1m = 3.281ft)

**computer**

I have to write a researh paper on Intel Core i3 processor ? I need some ideas

**Algebra**

thank u sooo much!!!!!!!:)

**Algebra**

Kevin has $6.45 in coins in his cash box. The numbers of quarters is one less than twice the number of dimes. The number of nickels is one less than twice the number of quarters. The value of the pennies is the same as the value of the nickels. How many of each Type of coin do...

**computer architecture**

How many bits does a word of storage contain on the IBM-PC?

**java programming**

Enhance bank account class by adding preconditions for the constructor and the deposit method that require the amount parameter to be atleast zero, and a precondition for the withdraw method that requires amount to be a value between 0 and the current balance.Use assertions to...

**MATHS**

A man is 2 years younger than his wife.Their current ages both are prime numbers. Next year his wife age will be a multiple of 11.And the husband will be the product of two consecutives. How old are both ?

**Physics**

A player is 6.5 ft tall.What is the player’s height in meters?

**english**

well thanks but i need 3 sources and i have to descibe my applications in detail and i cant find all the applications in just 3 sources

**english**

Sap is known as System Application and product. It creates same database where it can run all the applications in a company. Basically it is software which allows the people in businesses to keep track and updates of their customers and business communications and dealings. It...

**english**

i have to write a research paper on SAP Applications and i need some authentic websites ?

**english**

is it right when we say am confused or i am in confusion or confused ?

**Calculus**

Compute the derivatives of : f(x)= x^7 + 7^x+ 7^7

**PHYSICS**

What is the reaction effect of the following action effects? a) Earth orbits the sun b) Ball accelerates downward Thank YOu.

**PHYSICS**

What is the reaction effect of the following action effects? a) Earth orbits the sun b) Ball accelerates downward Thank YOu.

**PHYSICS**

Indentify the direction of the netforce in each of the following situations. A marble moves in a circular path inside a paper plate at a constant speed. The moon orbits the earth. An air hockey puck moves smoothly across the air hockey table after being struck. A rocket is lau...

**PHYSICS**

Indentify the direction of the netforce in each of the following situations. A marble moves in a circular path inside a paper plate at a constant speed. The moon orbits the earth. An air hockey puck moves smoothly across the air hockey table after being struck. A rocket is lau...

**math **

Use a linear approximation (or differentials) to estimate the given number. e^-0.01

**Physics**

I think it's the first person because in order to finish something faster, it will require more work. For example in a race. The person who finishes first has to run faster.

**Physics**

I think it's the first person because in order to finish something faster, it will require more work. For example in a race. The person who finishes first has to run faster.

**PHYSICS**

If a goalie faces an 80mph slap shot hit from 40 feet away, how much time is there before puck arrives at the net (5280ft= 1 mile) If the goalie requires half of the above time to complete his move to deflect the puck, how much time does the goalie have to react?

**Chem**

Determine the number of moles of silver chloride formed when three moles of sodium chloride are reacted completely with silver nitrate

**Calculus**

The length of a rectangle is increasing at a rate of 9 cm/s and its width is increasing at a rate of 7 cm/s. When the length is 15 cm and the width is 10 cm, how fast is the area of the rectangle increasing?

**cal**

Differentiate the function. f(x) = sin(7 ln x)

**10th grade**

BC=3x+2 and CD= 5x-10. Solve for x.

**social studies**

1. What was the first PERMANENT European colony in North America? hope someone can help!!

**Accounting**

That would be 200,000 times the future value of a single sum factor (which is found in the tables) 6% at 5 years which is 1.33823. So 200,000(1.33823)=267,646 the answer is C.

** Please Algebra 1**

Roberta sold fifty tickets for the school play. Roberta sold ten more student tickets than adult tickets. How many student tickets did Roberta sell? From this result, if the total cost of a student ticket was three-fourths the cost of an adult ticket, and Roberta collected a t...

**math**

its 10

**PreCalc**

The decibel (dB) is defined as dB= 10log (P2/P1), where P2 is the power of a particular signal. P1 is the power of some reference signal. In the case of sounds, the reference signal is a sound level that is just barely audible.How many dBs does a sound have if its power is 665...

**physics**

This is what I found.... When the car is at the top of the track the centripetal force consists of the full weight of the car. mv2/r = mg Applying the conservation of energy between the bottom and the top of the track gives (1/2)mv^2 + mg(2r) = (1/2)mv0^2 Using both of the abo...

**Math**

Sheila's age is two years more than twice Nicole's age. The sum of their ages is the same as Steven's age. If Steven's age is ten years less than five times Nicole's age, ,find the age of each. Write a verbal model!

**english**

Examples of personal interaction with a friend or family member about personal finance or credit cards. This is an emergency!!! Help please

**geometry**

raise pq and qr are perpendicular point s lies in the interior of angle pqr if measure of the angle pqs equals 4=7a and the measure of angle sqr = 9+4a find the measure of angle pqs and sqr

**Anatomy and Physiology**

Each nerve impulse begins in the dendrites of a neuron's. the impulse move rapidly toward the neuron's cell body and then down the axon until it reaches the axon tip. a nerve impulse travels along the neuron in the form of electrical and chemical signals. Acetylcholine...

**Calculus**

Application of Derivatives and Integrals: A sign 3 feet high is placed on a wall with its base 2 feet above the eye level of a woman attempting to read it. How far from the wall should she stand to get the best view of the sign, that is, so that the angle subtended at the woma...

**Calculus**

A sign 3 feet high is placed on a wall with its base 2 feet above the eye level of a woman attempting to read it. How far from the wall should she stand to get the best view of the sign, that is, so that the angle subtended at the woman’s eye by the sign is a maximum?

**math**

Thanks for the help!

**math**

Solve for x= x^2 + 45= 6x

**Information Science**

how do I begin the project

**Math**

Simple interest investment made for a period of 4years to R7800 with an initial investment of R4000 for this investment

**Compters and software in a bussiness**

How are computers and software aplications utilized in a bussiness setting to solve bussiness problems?

**Geo**

For questions 33 and 34, write the equations for the lines parallel and perpendicular to the given line through the given point (one point for each equation). x - 3y = 9 through (2, -1)

**intermidate alegebra**

ac Method 15t^ -17t-4 ac=15*4=60 This the ac Method can you help me finished this problem

**math**

y X 8 = 72

**english**

Did you know that Paul Revere rode through the countryside calling men to arms class? where does the comma belong? how can i rewrite this sentence with a comma?

**Chemistry**

How do you find pKa?

**Chemistry**

How do you find pKa?

**algebra**

-21+3z/2 divide 121z-847/4

**algebra**

Thank you so much!

**algebra**

Bob mosw his lawn in 3 hours, Jane can mow the same lawn in 5 hours. How much time would it take for them to mow the lawn together?

**Pre-algebra**

Factor the expression 14+21c

**commas and run on sentences**

You got it

**Physics**

a basketball player is trying to make a half-court ump shot and releases the ball at the height of the basket. assuming that the ball is launched at 51 degrees, 14 m from the basket, what speed must the player give the ball?

**college**

Answer the problems below and show or explain how you arrived at your final answer. 1. You sell premium toasters and are making a pricing decision. At a price of $100 (or “p = $100”) you predict that you can sell 30 of these premium toasters at your Scottsdale, Arizo...

**Algebra1**

a company sells brass and steel machine parts. One shipment contain 3 brass and 10 steel parts and cost 48.00. A second shipment contain 7 brass and 4 steel parts and cost 54.00. Find the cost of each type of machine part. How much would a shipment containing 10 brass and 13 s...

**math 156**

Indicate whether the sequence is arithmetic, geometric or neither 10,12,22,32,42.....

**calculus-limits??**

i keep on doing something wrong on this problem,i guess im forgetting to add or subtract some number. use f'(x)=lim h-->0 f(x+h)-f(x)/h to find the limit: lim h-->0 sin^(3)4(x+h)-sin^(3)4x/h

**math**

What are the number in the magic square of 4 by 4 if the magic number is 38?

**Chemistry**

Christ lover, you're a life saver!!!

**Art history**

Can you tell me if these sculptures have open or closed contour? I can't post the link but if you search the name and the numbers it should show up. Sculpture 1: Mother and Child [1979.206.121] Sculpture 2: Virgin and Child [33.23]

**Intro to art history**

I have to write a paper comparing two art sculptures. I have write if it's an open or closed contour but I don't know what that means.

**Accounting**

What kind of companies (industries) have negative cash flow from investing activities? And what kind of companies have positive cash flow from investing activities?

**chemistry**

describe the general characteristics of metals, nonmetals, and metalloids.

**Algebra**

Thank you for your help.

**Algebra**

John's insurance company will replace his car if repair costs exceed 80% of the car's value. The car recently sustained $8000 worth of damage, but it was not replaced. What was the value of his car?

**physics**

A tin can is filled with water to a depth of 30 cm. A hole 11 cm above the bottom of the can produces a stream of water that is directed at an angle of 34° above the horizontal. (a) Find the range of this stream of water. (b) Find the maximum height of this stream of water.

**physics**

Water flows in a cylindrical, horizontal pipe. As the pipe widens to twice its initial diameter the pressure in the pipe changes. Calculate the change in pressure between the wide and narrow regions of the pipe. Give your answer as an expression in terms of the density of wate...

**ITALIAN**

hello, can anyone translate this? could be a poetic-like translation. i just can't seem to make sense out of this, when i use a dictionary or an online translator. help please! thank you. "Si che morte Si che morte e lontananza Provi incor pena infinita che sol perde ...

**language arts**

i need help with my novel : watership down by richard adams

**german**

these are SO helpful. thank you so much. i will definitely check out the website. thank you

**GERMAN**

Wie war das in der Kindheit? 1. Als ich Kind war, ___ ich immer radfahren. will woll wolle wollte wollen 2. Als du Kind warst, ___ du nicht allein über die Straße gehen. darfte durfte darfst durftest dürftest 3. Als Monika Kind war, ___ sie nicht, daß es ...

**german**

Reiny, thank you. is there anyway you can tutor me/ help me online with my german? please let me know

**german**

Mein Mitbewohner hat alles umgestellt! Gestern waren die Musikbozen hinter (1)_____ Sofa. Aber Jurgen hat sie unter (2)____ Tisch gestellt. Das Telefon war auf (3)_____ Tisch. Aber Juergen hat es an (4)____ Wand gehaengt. Die Pflanze war in (5)_______ Ecke, aber jetzt ist sie ...

**physics**

A chair of weight 150 lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of = 36.0 directed at an angle of 40.0 below the horizontal and the chair slides along the floor.Using Newton's laws, calculate , the magnitude of the norm...

**physics**

A chair of weight 150 lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of = 36.0 directed at an angle of 40.0 below the horizontal and the chair slides along the floor.Using Newton's laws, calculate , the magnitude of the norm...

**algebra**

Thanks for this...I am so confused on it?!?

**algebra**

Thank you, but how does the x play into it,that is where I was confused at?

**algebra**

find the slope: x+5y=10

**algebra**

Thanks, I got it.

**algebra**

how do I do that?

**algebra**

a roof rise 2.7 feet vertically and 8.2 feet horizonatally. what is the grade of the roof?

**algebra**

Thank you!

**algebra**

find the slope for 8x-y=8

**Misc.**

What is the penultimate day of the year? Dec. 30th?

**Math-Probability**

Thank you, that helped out a lot!

**Math-Probability**

A deli offers its cheese sandwich with various combinations of mayonnaise, lettuce, tomatoes, pickles, and sprouts. 8 types of cheese are available. How many different cheese sandwiches are possible?

**math**

this fraction as an equivilent fraction in its lowest term 42 over 105

**History**

How did human history in North America during the period described in the Prologue differ from the events of Asia, Eurasia,

**MGMT/216**

What do you consider to be a source of ethics? What environmental factors contribute to ethical behavior? How are business ethics developed? Explain your answer

**Epidemiology**

To examine the association between high blood sugar and glaucoma, a group of 3154 people was observed for a period of 20 years in the NYC metropolitan area. The study participants were middle age epidemiologists working in the tri-state area. Participants received a free phys...

Pages: <<Prev | 1 | 2 | 3 | 4 | 5 | 6 | 7 | **8** | 9 | 10 | Next>>