# Posts by ron

Total # Posts: 365

**Science**

How much work is done to lift 5kg box to a vertical height of1.5m

**social studies**

I believe the answer is c

**math**

A 13 feet ladder is placed 5 feet away from a wall. What is the distance from the ground straight up to the top of the ladder?

**Chemistry**

What will burning of .3 liters of C2H2 produce?

**math**

If the average of 4 numbers is 12, what is the sum of the 4 numbers?

**history**

I strongly believed the 2 and 3 is right but I have doubt on number 1, I'm leaning more on B than D. Please help

**history**

Please check my work: 1.Diplomatic immunity is based on what assumption a.diplomats will become active members of their new communities b.diplomats will obey the laws of their country of residence c.diplomats have no restrictions on behavior d.Diplomats will be isolated in the...

**statistics**

4489

**ab calculus**

Air is being blown into a spherical balloon at the rate of 75 cm3/s. Determine the rate at which the radius of the balloon is increasing when the radius is 28 cm.

**math**

calvin has 90 stamps. for every mexican stamp, calvin has 8 U.S. stamps. How many mexican stamps does Calvin have?

**Calculus**

find the extremum of f(x,y) subject to the given constraint, and state wether it is a maximum or minimum. 4y^2-29x^2; 3x+y=21

**CHEMISTRY**

Nitrite ion

**history**

In the context of criminal punishment, desert refers to:

**Health**

Becky, Lemme smash, pls (I hope to god you get that reference)

**physics**

Four point masses, each of mass 2.0 $kg$ are placed at the corners of a square of side 1.4 $m$. Find the moment of inertia of this system about an axis that is perpendicular to the plane of the square and passes through one of the masses. The system is set rotating about the ...

**physics**

A cyclist starts from rest and pedals such that the wheels of his bike have a constant angular acceleration. After 18.0 s, the wheels have made 190 rev. What is the angular acceleration of the wheels? What is the angular velocity of the wheels after 18.0 s? If the radius of ...

**Chemistry**

Zn (0.85M) + Cu (1.10M) in an electrochemical cell. what is the conc of the zinc ion?

**consumer math**

12000(1+0.039/4)^4(6) 12000(1.00975)^24=15146.56 is this correct

**consumer math**

The Jones hope to accumulate $12000 for a sunroom over the next 6 yrs. How much would they need to invest right now at 3.9% compounded quarterly to reach goal? Please help

**Physics**

The exact mass of the moon was not determined until the Apollo lunar orbiter went into orbit around the moon. They used the period and the orbital radius to find the mass. But since you already know the mass of the moon, if the spaceship was orbiting 485 km above the surface ...

**Physics**

Two soccer players, Mary and Jane, begin running from nearly the same point at the same time. Mary runs in an easterly direction at 4.43 m/s, while Jane takes off in a direction 60.2o north of east at 5.07 m/s. How long is it before they are 24.7 m apart? What is the velocity ...

**Multiplication of fractions**

9 slices to a pizza

**Multiplication of fractions**

60 people can receive a single slice of pizza,how many people can receive a single slice of pizza if 7 pizzas are purchased?

**Physics**

A city planner is working on the redesign of a hilly portion of the road. An important consideration is how steep the road can be so that even a low-powered car can get up the hill without slowing down. A particular small car with a mass of 1368 kg can accelerate on a flat ...

**Math**

From -40 take -55, the answer I came to is 15, is this correct?

**Math**

Ms Sue, can you check to see if this correct. From -40 take -55, the answer I came to is 15, is this correct?

**Math**

Ms Sue, can you check to see if this correct. From -40 take -55, the answer I came to is 15, is this correct?

**Math**

Thanks Ms. Sue for your help.

**Math**

I got 8799.984 or should I just round it to 8800?

**Math**

Need help please. 183 1/3% of 4800

**Trig**

The Leaning Tower of Pisa is 55m tall. The tope edge of the tower is 5m out from the bottom edge. What is the angle created between the ground and the tower? Round your answer to the nearest degree. tan -1 (55/5) = 85 degrees but my Brother says I did it wrong that the angle ...

**Physics**

A 25.2 kg block of wood is pulled across a floor at a constant 9.74 m/s with a constant 62.7 N force. The bottom of the box has a surface area of 65.1 cm2. If the block was put on its side (which has twice the surface area of the bottom) and pulled with the same force at the ...

**Research**

The Average Score in the entrance examination in MSHS is 80 with a standard deviation of 40 students was taken from this year’s examinees and it was found to have a mean score of 84. Is there a significant difference between the known mean and the sample mean? Test at a= ...

**Science**

An airplane is traveling 725 m/s at 48.8° degrees north of west when a wind starts to blow. The velocity of the wind is 106.7 m/s and it is blowing 21.8° east of north. What is the speed of the airplane relative to the ground?

**Science**

A boat moving at 8.9 km/hr relative to the water is crossing a river 4.6 km wide in which the current is flowing at 2.4 km/hr. At what angle upstream should the boat head to reach a point on the other shore directly opposite the starting point?

**Chemistry**

A gas weighing 23.6 g occupies a 10.0 L flask at 27 C and 780. torr of pressure. Calculate the molar mass of the gas.

**allied school**

glady swan slipped from a sidewalk curb and twisted her right ankle. because of the severe pain cpt codes icd 9 codes icd codes

**Precalc**

1) Janet is offered a job with a starting salary of $15,000, and a guaranteed annual increase of $600. If she takes the job, what will be her guaranteed salary for the 10th year? What would her total earnings be for the first 10 years? Answer: $21,000 ; $ 198,000 2) Sue's ...

**Math**

I'm with you, but it also says a day. could it be 35? 40-5

**Math**

How do you know how long the trip was?

**Math**

Justin had 5 packages with 8 bottles of water in each package. He drank some of the bottles before the trip. During the trip, he drank 5 bottles a day. He drank all of the bottles before he went home. How many bottles of water did Justin drink before the trip? Explain

**Spanish II**

Oh ok so i should post it all with my answers and people will check them? There are 52 btw.

**Spanish II**

Fill in the blank with the correct conjugation of the verb in parentheses. ¿Cuándo (regresar) mi tía de México? A)regresamos B)regresan C)regreso D)regresa (There are more, help needed before Friday please.)

**Algebra**

A rectangular field is four times as long as it is wide. If the perimeter of the field is 400 yards, what are the fields dimensions? The width of the rectangular field is ____ yards.

**english**

When you write in second person, you’re acting the part of a/an A. critic. B. observer. C. participant. D. advocate.

**Math**

9 slices per pizza

**Math**

Carol can run 4.2 Miles's in 14 minutes, what is her speed per minute.

**Algebra**

thank you

**Algebra**

Suppose a box is to be constructed from a square piece of material of side length x by cutting out a 3-inch square from each corner and turning up the sides. Express the volume of the box as a polynomial in the variable x

**Math**

There are 64 students. 80% scored a 75 on a final test. How many students scored a 75?

**Geometry**

we have line QR parallel= to line ST, PQ = 8, QS = , and PT = 12. Find PR.

**Physics**

The crankshaft of an engine increases its spin from 1,200 rpm to 1,500 rpm in 0.50 s. What is its angular acceleration

**Calculus**

A wire of length 12 meter is cut into two parts; one part is bent to form a square, and the other is bent to form an equilateral triangle. Where the cut cut should be made if a) the sum of the two areas is to be a maximum? b) the sum of the two areas is be a minimum?

**math**

60

**MATH**

10 5/12 ÷ 1/10 =

**PSY/240 Hunger, Eating,**

I am confused, please explain what are set points and what are settling points in relation to weight control?

**Psy 270**

Where can I find the best resources to research this question besides the text book? Psychology has many applications in our lives, both professionally and personally. How might having a background in psychology help you in your professional life? How might it help you in your...

**Social Studies**

Name the 6 founding Fathers of the us

**Psychological and Psychophysiological Stress Disor**

What kind of traumatic events cause undiagnosable psychological disorders?

**sy270**

What questions should I ask the parents of four year old Clara about her sudden change of behavior and refusal to go back to pre-school.

**Psy270**

Individual Clinical Assessment Mr. and Mrs. Lawson brought their 4-year-old adopted daughter, Clara, to see Dr. Mason, a psychiatrist. Clara was polite in greeting Dr. Mason, but did not smile and kept her gaze down as she took a seat. Mr. and Mrs. Lawson sat next to Clara and...

**psy220**

the American emphasis on the pursuit of happiness

**Physics Help..**

A small cube (m=0.290 kg) is at a height of 261 cm up a frictionless track which has a loop of radius, R = 28.71 cm at the bottom. The cube starts from rest and slides freely down the ramp and around the loop. Find the speed of the block when it is at the top of the loop. A ...

**Math**

If the cost is 3.00 doars per sq ft to clean a carpet, how much will it cost to clean a carpet 12.5 ft x 23ft?

**psy/270**

⦁ What do researchers mean by ‘subjective well-being’? How is this construct measured?

**economics**

A speculator sells a stock short for $50 a share. The company pays a $2 annual cash dividend. After a year has passed the seller cover a short position of $42. What is the percentage return on the position (excluding the impact of any interest expense and commission)?

**economics**

An investor sells a stock short for $36 a share. A year later the investor cover the position at $30 a share. If the margin requirement is 60% what is the oercentage return earned on the investment? now assume the price is at $42 when the investor closes the position

**MATH**

5.7 + 33/100 + 61/1000 =

**Physics**

A bullet (m = 0.0250 kg) is fired with a speed of 92.00 m/s and hits a block (M = 2.50 kg) supported by two light strings as shown, stopping quickly. Find the height to which the block rises. Find the angle (in degrees) through which the block rises, if the strings are 0.540 m...

**abnormal behavior**

1. Some criteria used for reaching a diagnosis cannot be observed directly 2. Personality disorders can be similar to each other. 3. People with different personalities can be given the same diagnosis 4. Do you think that personality disorders are true mental illnesses? Why or...

**Math**

Thanks

**Math**

5 7/15

**Math**

3 1/6 + 2 3/10 = Give answer in simplest form

**Math**

3 7/10 - 1 2/5 = Give answer in simplest form

**Math**

2 7/12 + 1 2/3 = Give answer in simplest form

**Math**

1 9/10

**Math**

1 1/5 + 7/10 = Give answer in simplest form

**MATH**

2 3/4 + 1/12 = Give answer in its simplest form

**Fedora**

. If /home/jenny/draft and /home/alex/letter are links to the same file and the following sequence of events occurs, what will be the date in the opening of the letter? __________ a. Alex gives the command vim letter. b. Jenny gives the command vim draft. c. Jenny changes the ...

**chemstry**

2 half years

**MATH**

if john spent $130 and matt spent $480, john will have three times as much money left as matt. both boy's started with the same amount of money. how much money did each boy's start with ?

**MATH**

if john spent $130 and matt spent $480, john will have three times as much money left as matt. how much money did each boy start with ?

**math**

if john spent $130 and matt spent $480, john will have three times as much money left as matt. how much money did each boy start with ?

**Math**

There are how many hundredsn the number 344,298

**Math**

in the numeral 3,000,000, there are how many thousands

**Math**

If a population is growing at 3.5 percent compounded continuously how long before it doubles?

**math**

Brilli the ant placed the numbers 1,2,…,n in order clockwise around a circle. She can create an infinite sequence A={aj}∞j=0 of integers by letting a0=k∈{1,2,…,n} and constructing ai+1 from ai by taking the integer that is ai positions clockwise in the ...

**Math**

Express 2.4 as a fraction in its simplest form

**Algebra**

Leila purchased a prepaid phone card for . Long distance calls cost cents a minute using this card. Leila used her card only once to make a long distance call. If the remaining credit on her card is , how many minutes did her call last?

**chemistry**

You have 10.0 g each of Na, C, Pb, Cu and Ne. Which contains the smallest number of moles?

**chemistry**

How many grams of carbon dioxide will form if 4.4 g of propane reacts with 16.0 g of oxygen producing 7.2 g of water?

**Discrete Math**

For sets A, B, C is a subset of U, prove or disprove (with a counter-example) the following: If A is a subset of B, B is not a subset of C, then A is not a subset of C,

**Discrete Math**

Let n be positive integer greater than 1. We call n prime if the only positive integers that (exactly) divide n are 1 and n itself. For example, the first seven primes are 2, 3, 5, 7, 11, 13 and 17. (We should learn more about primes in Chapter 4.) Use the method of exhaustion...

**Discrete Math**

If n is a positive integer and n > 1, prove that (n over 2)+ (n-1 over 2) is a perfect square.

**Discrete Math**

If n is a positive integer and n > 1,prove that (n) + (n-1) is a perfect sq (2) ( 2 )

**Discrete Math**

8 trophies can be awarded to 30 people in how many different ways

**math(statistics)**

suppose a random variable X can equal to 1,2,3,4,or 5. if P(x<3)=.4 and p(x>3)=.5 (a)p(x=3) and b P(x<4)

**Math**

Name the vertices of a square whose angles are f,g,a,l

**Science**

Um , please guys I need the right answer. I'm taking the test to. The name " the right answer" can you give me the right answers that were correct on the test?

**Math**

What is 2 2/4 +2 2/4 + 6 1/2=?