Sunday

January 22, 2017
Total # Posts: 143

**Physics/Math**

Sorry, how did you get that? :(

*October 4, 2012*

**Physics/Math**

Two cars, 127 miles apart, start moving towards each other at the same time. One is moving 3 times as fast as the other. If they meet 1.5 hrs later, find the average speed of the slower car in miles per hour?

*October 4, 2012*

**4th Grade Math**

My number is even. My number has 3 as a factor. My number also has 5 as a factor

*September 19, 2012*

**Physics**

Two objects are connected by a light string that passes over a frictionless pulley. The incline is frictionless, m1 = 2.00 kg, m2 = 4.00 kg, and theta= 60.0°. (b) Find the accelerations of the objects. Magnitude (c) Find the tension in the string. N (d) Find the speed of ...

*September 19, 2012*

**Physics**

A small bug is nestled between a 1-kg block and a 2-kg block on a frictionless table. A horizontal force can be applied to either of the blocks as shown in figure Q5.24 (i) In which situation illustrated in the figure (a) or (b), does the bug have a better chance of survival, ...

*September 18, 2012*

**Physics**

In a 100 m linear accelerator, an electron is accelerated to 1.40% the speed of light in 35.0 m before it coasts 65.0 m to a target. (b) How long does the total flight take?

*September 6, 2012*

**math**

How do I draw a reflex angle ZYX so that it measures 255 degrees?

*March 5, 2012*

**Ff**

The coefficient of static friction between the m = 3.50 kg crate and the 35.0° incline of Figure P4.41 is 0.340. What minimum force must be applied to the crate perpendicular to the incline to prevent the crate from sliding down the incline? Your response differs from the ...

*March 1, 2012*

**Physics**

Assume that the three blocks in Figure P4.27 move on a frictionless surface and that a F = 46 N force acts as shown on the m = 2.5 kg block. Figure P4.27. (a) Determine the acceleration given this system. m/s2 (to the right) (b) Determine the tension in the cord connecting m ...

*February 23, 2012*

**math**

173.32. me and my dad did it at the same time.

*January 19, 2012*

**Math problem**

1.You have recently found a location for your bakery and have begun implementing the first phases of your business plan. Your budget consists of an $80,000 loan from your family and a $38,250 small business loan. These loans must be repaid in full within 10 years. a.What ...

*November 20, 2011*

**math problem**

Can you determine which number corresponds to the situation THe record high temperature for a date is 95.6 degree above zero What is the corresponding number for this sentence.

*November 20, 2011*

**math problem**

Please solve using the addition principle please do check x + 3/13 = 5/13

*November 20, 2011*

**Math problem**

evaluate a+b/10 for a = 68 and b =12 a+b/10 =

*November 20, 2011*

**Math problem**

The formula b=29a is used to estimate the minimum furnance output B in btus for a modern house with the amount of square feet of flooring A 1. determine the minimum furnance output for a 2300 ft2 modern house 2. solve the formula A

*November 20, 2011*

**Physical Science**

An aluminum nucleus has 13 protons and 14 neutrons. A copper nucleus has 29 protons and 34 neutrons. What is the force of repulsion between an aluminum nucleus and a copper nucleus when they are separated by 1.2 nm?

*March 26, 2011*

**math**

First, a square gives the greatest area, but the length and width are whole numbers. 4 doesn't go equally into 46, but since it does in 48, the results should be a close to 12 X 12 as possible, so the size is 12 meters by 11 meters 2l + 2w =p 2(12) + 2(11) = p 24 + 22 = 26

*March 17, 2011*

**math**

I need help on finding sales tax and discount

*February 15, 2011*

**College Physics**

If the river is flowing downstream at 1.5 mi/h and he can swim 2.0 mi/h then the angle he would need to swim at in order to swim straight across would be arctan(1.5/2) which is equal to 36.87 degrees. This is because you can form a right triangle with 1.5 being opposite the ...

*February 8, 2011*

**math**

6/18 = 1/3

*January 4, 2011*

**geometry**

How do I figure out the dimensions of each room in a 1200 square foot house with a closet and bathroom the same size, a big family room, and two circular bedrooms?

*December 13, 2010*

**algebra**

Solve the proportion x / 12 = 91 /84

*September 16, 2010*

**Math- Geometry**

Can anyone help me answer this question... Find the area of a right isoscles triangle if the altitude on the hypotenuse is 4 cm.

*September 5, 2010*

**Math**

240 m of fencing material is going to be used to enclose three sides of a rectangular lot. What should the dimensions of the lot be so that the enclosed area is as large as possible? (I'm supposed to solve this using a quadratic equations but I don't know how...)

*August 22, 2010*

**Algebra**

don't get it

*June 1, 2010*

**Algebra**

A train leaves a city heading west and travels at 50 miles per hour. Three hours later, a second train leaves from the same place and travels in the same direction at 65 miles per hour. How long will it take for the second train to overtake the first train.

*June 1, 2010*

**Algebra**

2.5 hours

*June 1, 2010*

**Algebra**

Two trains leave Raleigh at the same time, one traveling north, the other south. The first train travels at 50 miles per hour and second at 60 miles per hour. In how many hours will the trains be 275 miles apart?

*June 1, 2010*

**Algebra**

A ship travels from New York to southampton, england at 33 miles per hour. A plane traveling 605 miles per hour takes 104 hours less time to make the same trip. How far apart are the two cities?

*June 1, 2010*

**Physics**

A non-rotating spherical planet with no atmosphere has a mass M and radius R. A particle is fired off from the surface with a speed equal to 3/4 the escape speed. Calculate the farthest distance it reaches (measured from the center of the planet) if it is fired tangentially. I...

*March 24, 2010*

**Physics**

A non-rotating spherical planet with no atmosphere has a mass M and radius R. A particle is fired off from the surface with a speed equal to 3/4 the escape speed. Calculate the farthest distance it reaches (measured from the center of the planet) if it is fired tangentially. I...

*March 23, 2010*

**Riddle**

A cow ate him

*November 22, 2009*

**Calculus**

3^2/3^4 I did this through my calulate and I came up with 1/9, but that is not the correct answer. I'm not sure what to do?

*March 24, 2009*

**7th grade math vocabulary**

I need a math vocabulary work that begins with a J

*March 9, 2009*

**math**

Betty has nine pink ribbons and eight blue ribbons. What fraction of Betty's ribbons are pink? *I am trying to teach my little brother how to do this. How can you write it so i can tell him how to answer the other problems to? I don't just need the answer pelase.

*December 4, 2008*

**HSM 220 Creating a Budget**

I had problems too, but somehow figured it out. Take the first amount, such as the rent at $125,000. Multiply 60% times the 125,000 for the basic skills and multiply 40% times the 125,000 for the vocational. Therefore 75,000 for basic, and 50,000 for vocational. Do this for ...

*October 9, 2008*

**science**

What layer of the atmosphere acts like a giant magnet? What does it attract?

*September 30, 2008*

**grammar**

In the sentence "On track and field day, the teacher was very proficient at announcing the events", is the word "proficient" a noun or verb?

*May 8, 2008*

**Chemistry**

Write the equilibrium expression, and calculate Kp for the reaction under the conditions described: 2NaHCO3 (s) --> <--- Na2CO3 (s) + H2O (g) + CO2 (g) 100 g of solid NaHCO3 was placed in a previously evacuated rigid 5.00 L container and heated to 160 degrees C. Some of ...

*January 30, 2008*

**Chemistry**

Write the equilibrium expression, and calculate Kp for the reaction under the conditions described: 2NaHCO3 (s) --> <--- Na2CO3 (s) + H2O (g) + CO2 (g) 100 g of solid NaHCO3 was placed in a previously evacuated rigid 5.00 L container and heated to 160 degrees C. Some of ...

*January 30, 2008*

**social studies**

how did women help prepare for the civil war??? i cant find in s.s book you should double check your book. if you cant find it in there you could use the internet, but i would check the book

*March 1, 2007*

**Math**

I need help with this problem: If N= {1,2,3,4,....}, A= {x/x=2n-1, n E N}, B={x/x=2n, n E N}, and C= {x/x+2n +1, n=0, or n E N}, find the simplest possible expression for each of the following: a. A U C b. A U B - the U stands for union c. A (intersects) I can't find the ...

*September 17, 2006*