Thursday

October 30, 2014

October 30, 2014

Total # Posts: 967

**Physics**

For a given initial projectile speed Vo, calculate what launch angle A gives the longest range R. Show your work, don't just quote a number.
*February 17, 2014*

**Physics**

Make a predictive statement about the path dependence of accelerations due to gravity
*February 10, 2014*

**Physics**

Calculate the time it would take for an object to fall through a linear height equal to the objects starting height, h for a 20 degree incline.
*February 10, 2014*

**Physics**

An object begins at rest on a frictionless inclined plane at a linear distance of 2.0m from the base of the incline. If the incline makes an angle of 20 degrees with the horizontal, determine the time it will take for the object to reach the base of the incline.
*February 10, 2014*

**Physics**

Thanks for the help. It is much appreciated!
*February 3, 2014*

**Physics **

A small washer is taped to a golf ball and the ball is hung from an electromagnet. When a trigger is activated the electromagnet will shut off and the golf ball will fall through a height of 75 cm to land on a time of flight pad. Determine the amount of time it will take for ...
*February 3, 2014*

**Physics**

An object at rest accelerates through a distance of 1.5 m at which point the instantaneous velocity of the object is 3.5m/s. Determine: a. The average acceleration of the object b. The time it took the object to travel 1.5m c. The average velocity of the object during this ...
*February 3, 2014*

**maths**

One pump fills a tank two times as fast as another pump. If the pumps work together they fill the tank in 18 minutes. How long does it take each pump working alone to fill the tank?
*February 2, 2014*

**physics**

A car is being pulled out of the mud by two forces that are applied by the two ropes shown in the drawing. The dashed line in the drawing bisects the 30.0° angle. The magnitude of the force applied by each rope is 2900 newtons (N). (a) How much force would a single rope ...
*January 27, 2014*

**maths**

A coin box contained some twenty-cent and fifty-cent coins in the ratio 4 : 3. After 20 twenty-cent coins were taken out to exchange for fifty-cents coins of the same value and put back in the box, the ratio of the number of twenty-cent coins to the number of fifty-cents coins...
*January 27, 2014*

**Maths**

Thanks Steve. Where is 12 come from?
*January 27, 2014*

**Maths**

Daniel's watering can holds 6L of water when full. He fills his watering can 3 times from the bucket and then the bucket is empty. How much more waterdoes one full bucket hold than Daniel's full watering can? A 3L B 9L C 12L D 18L
*January 27, 2014*

**MATHS**

Ken had three times as many apples as papayas. After selling 160 apples and 25 papayas, he had twice as many papayas as apples left. How many fruits did he have at first?
*January 27, 2014*

**MATH**

Mrs Lim is 41 years old and her daughter is 14 years old. How many years ago was Mrs Lim four times as old as her daughter?
*January 26, 2014*

**business**

Tim Urban, owner/manager of Urban's Motor Court in Key West, is considering outsourcing the daily room cleanup for his motel to Duffy's Maid Service. Tim rents an average of 50 rooms for each of 365 nights (365 X 50 equals the total rooms rented for the year(. Tim'...
*January 22, 2014*

**Chemistry**

1.42e9 2.36e-10
*December 21, 2013*

**math**

a dealer has 30 cars and trucks. If 2 more cars are delivered, the dealer will have 3 times as many cars as trucks. How many trucks does the dealer presently have?
*December 14, 2013*

**physics**

a .2 kg ball is being swung around a verticle circle from a 1 m long string, the ball is traveling at 4 m/s counter -clockwise. what is the tension on the string?
*December 8, 2013*

**science**

If an automobile engine delivers 40.2 hp of power, how much time will it take for the engine to do 5.90 ✕ 105 J of work? (Hint: Note that one horsepower, 1 hp, is equal to 746 watts.)
*December 3, 2013*

**4th Grade Math: Help Is Needed ASAP**

My son is in the fourth grade and is needing help with these math problems. Can someone please help him with these problems. 1. 2/3+2/9= 2. 3/5+3/10= 3. 5/12+1/3= 4. Find the sum of 1/6 and 1/12 5. Add 1/4 to the answer in Exercise 4. 6. What is the sum of 1/8, 1/4, and 3/8? 7...
*November 18, 2013*

**TO ANY MATH HELPERS**

1) x= -.5 y= -.5 2) x=.5 y=5
*November 18, 2013*

**English**

Zach used to work at an independent record label. Negotiating could be exciting, but he was supposed to slant everything in the label’s favor. Some reps used questionable tactics. He couldn’t look at himself in the mirror if he treated people like that. First ...
*November 18, 2013*

**English**

When the servers arrived, Jack gave them the information on today's specials. He talked enthusiastically about the fresh berries: "They look fantastic! I want to serve them with shortcake." 1. In the above passage, "talked" is an example of a(n): a)...
*November 18, 2013*

**Math 5th grade**

Thank you Ms. Sue!
*November 11, 2013*

**Math 5th grade**

1. 16/40, 24/60 2. 24/30, 36/45 3. 24/40, 36/60
*November 11, 2013*

**Math 5th grade**

write two fractions that are equivalent to each fraction. 1. 8/20 2. 12/15 3. 12/20 Can u please show me
*November 11, 2013*

**Math 5th grade**

Write two fractions that are equivalent to each fraction. 1. 2/5 2. 21/35
*November 11, 2013*

**English... Urgent**

Hi this is a mystery problem can you solve this? The best forger of all time was indeed a most brilliant artist and a man respected and sought after in the criminal world. One day he was asked to copy $50 notes but the police searched his premises before be even got started ...
*October 26, 2013*

**English... Urgent**

Look at the following puzzles and try to decipher the well known sayings 1. Ban ana 2.nafish nafish 3.japmadean 4.issue issue issue issue issue issue issue issue issue issue 5. Lookuleap Note that I have not typed any of these words wrong
*October 26, 2013*

**Algebra II**

Having trouble solving this... Write the equation if a line that goes through (6,-1/2) and has an x-intercept of 5x-2y=-20 I think the x-intercept is -4, but I don't know what to do with that.
*October 24, 2013*

**physics**

Ok so im looking for minimum avg power for a 38 kg boy to climb a 170 m building that takes 10.2 min include only work done against gravity
*October 14, 2013*

**English**

Hi this is a rebus can you answer it? ECNALG
*October 12, 2013*

**English**

Hi this is a rebus question, can you answer it? ECNALG
*October 12, 2013*

**English**

Hi this a rebus, can you answer it? TEEXAMRM
*October 12, 2013*

**English **

Hi this is a rebus, can you answer it? KNEE LIGHT
*October 12, 2013*

**economics**

According to the permanent income hypothesis, households will tend to react to a temporary tax cut by? A) assuming the new tax level will be permanent. B) saving most of the additional disposable income. C) increasing consumption sharply in response to the higher disposable ...
*October 3, 2013*

**Contempoary Mthematics**

the amount of money
*October 3, 2013*

**Algebra 2**

| t - 7 | + 3 > or = 4
*September 24, 2013*

**Calculus**

nevermind it won't accept ANY answer now so it doesn't matter
*September 24, 2013*

**Calculus**

6/ln[x] find the derivative... im coming up with -6/x*(ln(x))^2 but it isn't accepting the answer what am i doing wrong?
*September 24, 2013*

**Calculus**

I hate these Y= (Square root of x) - 2 ________________________ (square root of x) + 2 Calculate dy/dx Please help, thank you
*September 23, 2013*

**PSY202**

CHERINE IS A GOOD LISTENER AND UNDERSTANDS NON-VERBAL COMMUNICATION. SHOWS A HIGH DEGREE OF A:BODILY-KINESTHETIC INTELLIGENCE B:SPATIAL INTELLIGENCE. C:INTERPERSONAL INTELLIGENCE. D:INTRAPERSONAL INTELLIGENCE.
*September 17, 2013*

**Chemistry**

why is it impossible to completely separate ethanol from water?
*September 16, 2013*

**Chemistry**

why is it impossible to completely separate ethanol from water?
*September 16, 2013*

**Maths**

9 is a very strange digit. Try to use four nines 9999 and normal operations plus minus multiply divide brackets etc, use 4 nines to make 100
*September 13, 2013*

**Maths**

9 is a very strange digit. Try to use four nines 9999 and normal operations plus minus multiply divide brackets etc, use 4 nines to make 20
*September 13, 2013*

**Maths**

A bookshelf has 5 shelves its made from wood that is 30 mm thick and the shelves are evenly spaced Bookshelf is 2100mm high 600mm long and 300mm wide Mark out the sides and shelves from a piece of wood 2400mm long and 1200mm wide a saw cut is approximately 3 mm thick
*September 13, 2013*

**Maths**

Can you use 4 fours 4444 and normal operations to arrive at 4?
*September 13, 2013*

**Maths**

Can you use 4 nines 9999 And normal operations to arrive at 100
*September 13, 2013*

**Maths **

Can you use 4 nines 9999 and normal operations to arrive at 20?
*September 13, 2013*

**algebra**

The perimeter of a square is 12cm greater than that of another square. It's area exceeds the area of the other by 39cm^2. Find the perimeter of each square. I don't get how to set this up.
*September 10, 2013*

**Algebra2**

The perimeter of a square is 12 cm greater than that of another square. It's area exceeds the area of the other by 39 cm^2. Find the perimeter of each square.
*September 10, 2013*

**Maths do not see my last question displayed wrong**

Use two straight cuts to break the figure below into three pieces and re arrange them to from a square 12345 are the squares 1 234 5
*August 31, 2013*

**geometry**

Can you use two straight cuts to break the figure below into three pieces 5 squares numbered 12345 5 123 4
*August 30, 2013*

**Science**

Two south poles or two north poles are called...
*August 30, 2013*

**Algebra**

Membership cost 900 and 20 per round. Different club charges 1500 and 14 per round with 15 rounds free. After how many rounds does second membership become cheaper. Need the equation.
*August 16, 2013*

**Math**

1 2/3 + 2/3= 2 4/3 ? 5 3/8 - 1 1/8= 4 1/4 ? 3/4 + 5= 5 3/4 ?
*August 5, 2013*

**Math**

(A). 4 3/12? (B). 3 5/9
*August 5, 2013*

**Math**

5-3/12=? and 7 8/9 - 4 3/9=
*August 5, 2013*

**Math**

Got it right!! THANK YOU!!
*August 5, 2013*

**Math**

8/9 x 11/12=
*August 5, 2013*

**Math **

What should I invest now to have $15,000 in 12 years at a compounded monthly rate of 1.6%?
*July 17, 2013*

**math**

To determine the compound amount of an investment of $10,000 with an interest rate of 6% compounded monthly after 4 years requires you to use a table factor that goes beyond the Compound Interest Table. Calculate the new table factor for this investment.
*July 1, 2013*

**math**

What would be the compound amount after 19 years on an investment of $42,000 with an 11% interest rate compounded annually?
*July 1, 2013*

**Contemporary math**

Using the Compound Interest Table, calculate the compound amount after 5 years for an investment of $7,700 at 6% interest compounded quarterly. My answer is $10,370.82 is this correct?
*July 1, 2013*

**Physics **

A rope exerts a constant horizontal force of 203N pulling a 68-kg crate across the floor. The velocity of the crate is observed to increase from 3m/s to 5m/s in a time of 4 seconds under the influence of this force and the frictional force exerted by the floor on the crate. ...
*June 21, 2013*

**Physics **

A rope exerts a constant horizontal force of 203N pulling a 68-kg crate across the floor. The velocity of the crate is observed to increase from 3m/s to 5m/s in a time of 4 seconds under the influence of this force and the frictional force exerted by the floor on the crate.
*June 21, 2013*

**conditional sentence**

1 is "c" The third conditional or past unreal conditional describes a condition that can not be met because the opportunity is past. When did the system fail? It failed in the past, last night.
*June 12, 2013*

**Physics**

Two wires are identical, except that one is aluminum and one is copper. The aluminum wire has a resistance of 0.835. What is the resistance of the copper wire? Take the resistivity of copper to be 1.72 x 10-8 Ω·m, and that of aluminum to be 2.82 x 10-8 Ω&...
*June 5, 2013*

**Math**

It'll be an ellipse. The domain -3, 3. The range -2 2. Am I right?
*May 30, 2013*

**Math**

What type of conic section is given by the equation 4x^2+9y^2=36? What are its domain and range?
*May 30, 2013*

**Algebra**

5 Couples, having dinner before the prom are to be seated at a circular table. In how many ways can this occur if the seating must be boy girl, boy girl?
*May 23, 2013*

**Physics**

A Carnot refrigerator is used in a kitchen in which the temperature is kept at 301 K. This refrigerator uses 216 J of work to remove 2360 J of heat from the food inside. What is the temperature inside the refrigerator?
*May 5, 2013*

**Physics**

A lawnmower engine with an efficiency of 0.29 rejects 5500 J of heat every second. What is the magnitude of the work that the engine does in one second?
*May 5, 2013*

**Physics**

Assume that the pressure is one atmosphere and determine the heat in joules required to produce 2.99 kg of water vapor at 100.0 °C, starting with (a)2.99 kg of water at 100.0 °C and (b)2.99 kg of liquid water at 0.0 °C.
*May 5, 2013*

**Physics**

An ice chest at a beach party contains 12 cans of soda at 2.45 °C. Each can of soda has a mass of 0.35 kg and a specific heat capacity of 3800 J/(kg C°). Someone adds a 9.60-kg watermelon at 25.3 °C to the chest. The specific heat capacity of watermelon is nearly ...
*May 5, 2013*

**Elements of Calculus**

A company is manufacturing kayaks and can sell all that it manufactures. The revenue (in dollars) is given by R=750-(X^2/30) where the production output in 1 day is x kayaks. If production is increasing at 3 kayaks per day when production is 40 kayaks per day, find the rate of...
*May 3, 2013*

**Elements of Calculus**

A company is manufacturing kayaks and can sell all that it manufactures. The revenue (in dollars) is given by R=750-(X^2/30) where the production output in 1 day is x kayaks. If production is increasing at 3 kayaks per day when production is 40 kayaks per day, find the rate of...
*May 2, 2013*

**Elements of Calc.**

A 17 foot ladder is placed against a wall. if the foot of the ladder is pushed toward the wall at 0.5 feet per second, how fast is the top of the ladder rising when the foot is 8 feet from the wall?
*May 1, 2013*

**Physics**

A person is standing outdoors in the shade where the temperature is 22 °C. (a) What is the radiant energy absorbed per second by his head when it is covered with hair? The surface area of the hair (assumed to be flat) is 180 cm2 and its emissivity is 0.84. (b) What would ...
*April 30, 2013*

**Physics**

The amount of heat per second conducted from the blood capillaries beneath the skin to the surface is 250 J/s. The energy is transferred a distance of 1.7 x 10-3 m through a body whose surface area is 1.8 m2. Assuming that the thermal conductivity is that of body fat, ...
*April 30, 2013*

**Math**

Thanks Ms. Sue!!! That's what I got!!!
*April 22, 2013*

**Math**

Add and convert 4-4/5 + 3-3/5=
*April 22, 2013*

**Math**

Using a ruler to draw a square with a perimeter of 48ft, and using the scale 6ft=1/2in (Hint: to find the length of each side, divide 48ft by 4). How should this problem look?
*April 19, 2013*

**MATH**

Your store’s average basket (transaction) size for the month of March was $11.50 and you believe the average basket size will remain the same for your store in April. One of your hourly employees had an average basket size of $9.00 for the month of March and averaged 125 ...
*April 15, 2013*

**tax accounting**

purchased a bond on August 15, 2012 for $2,100. $200 of the purchase price represented accrued interest. She received $210 in interest income on the bond on December 1, 2012. What is the proper treatment of the $210 interest income for federal income tax purposes?
*April 14, 2013*

**Finance**

lisa borrowed $8000.00 on an 8%, 60 day note after 15 days she paid $2000.00 on the note , on day 45 , she paid $1000.00 on the note. What is the total interest and ending balance due by us rule by ordinary interest
*April 12, 2013*

**Physics**

Could you help me out with any of these questions?
*April 10, 2013*

**Physics**

Red light (n = 1.520) and violet light (n = 1.538) traveling in air are incident on a slab of crown glass. Both colors enter the glass at the same angle of refraction. The red light has an angle of incidence of 20.97°. What is the angle of incidence of the violet light? ...
*April 10, 2013*

**Physics**

When a converging lens is used in a camera (as in the first drawing), the film must be placed at a distance of 0.240 m from the lens to record an image of an object that is 4.30 m from the lens. The same lens is then used in a projector (as in the second drawing), with the ...
*April 10, 2013*

**Physics**

A ray of sunlight is passing from diamond into crown glass; the angle of incidence is 36.00°. The indices of refraction for the blue and red components of the ray are: blue (ndiamond = 2.444, ncrown glass = 1.531), and red (ndiamond = 2.410, ncrown glass = 1.520). ...
*April 10, 2013*

**Physics**

An object that is 32 cm in front of a convex mirror has an image located 17 cm behind the mirror. How far behind the mirror is the image located when the object is 24 cm in front of the mirror?
*April 10, 2013*

**Physics**

A small mirror is attached to a vertical wall, and it hangs a distance of 1.81 m above the floor. The mirror is facing due east, and a ray of sunlight strikes the mirror early in the morning and then again later in the morning. The incident and reflected rays lie in a plane ...
*April 10, 2013*

**Physics**

You are trying to photograph a bird sitting on a tree branch, but a tall hedge is blocking your view. However, as the drawing shows, a plane mirror reflects light from the bird into your camera. For what distance must you set the focus of the camera lens in order to snap a ...
*April 10, 2013*

**History/English**

I have two separate questions that I am having trouble answering... Why is Roman law often considered to be the greatest contribution of the Romans to the modern world? Also, I have to find image, style, tone, setting, and theme within the book The Hunger Games! I have the ...
*April 5, 2013*

**math**

If gasoline costs $0.42 a liter, approximately how much will it cost to fill a 40 gallon tank?
*April 5, 2013*

**math**

Roger has three employees who earn $500, $550, and $700, respectively. how much does Roger owe for SUTA and FUTA in the first weeks? Assume a SUTA rate of $5.3% and a FUTA rate(after the company's credit for state unemployment tax) of .8%
*April 4, 2013*

**math**

subtract 27 8/9 from 59 5/12 and reduce your answer to lowest terms.
*April 4, 2013*

**math 141**

Three machines turn out all the products in a factory, with the first machine producing 40% of the products, the second machine 35%, and the third machine 25%. The first machine produces defective products 12% of the time, the second machine 3% of the time and the third ...
*April 2, 2013*

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