# Posts by megan

Total # Posts: 1,194

**math (8th grade)**

The length of each piece in a model train railroad built on the HO scale is 1/87 of the actual length. Another popular model is the N scale, for which the scale is 1/160. Each car on a full-size passenger train is 80ft long. What is the length in inches of a model passenger ...

**math**

If the O scale (model train question) is 1/48 the acutal length. An O-scale locomotive is 1.05ft long. How long is the actual locomotive?

**Modern World Studies**

Okay thanks!

**Modern World Studies**

Okay thank you!

**Modern World Studies**

Can someone please hurry and help me? I don't really understand this lesson. & I am taking a test on it.

**Modern World Studies**

1. What do we call the movement in literature and the arts that emphasized nature and emotion over reason? [x] a. Enlightenment b. Reformation c. Romanticism d. Neoclassicism 2. Who said it is the government’s job to protect the natural rights of life, liberty, and ...

**Physics**

A block of mass 2.10 kg is pushed 2.33 m along a frictionless horizontal table by a constant 19.4 N force directed 27.5o below the horizontal. Determine the magnitude of the normal force exerted by the table.

**Physics**

A block of mass 2.10 kg is pushed 2.33 m along a frictionless horizontal table by a constant 19.4 N force directed 27.5o below the horizontal. Determine the magnitude of the normal force exerted by the table.

**Physics**

A block of mass 2.10 kg is pushed 2.33 m along a frictionless horizontal table by a constant 19.4 N force directed 27.5o below the horizontal. Determine the magnitude of the normal force exerted by the table.

**Physics please help!!**

If a woman lifts a 19.3 kg bucket from a well and does 6.10 kJ of work, how deep is the well? Assume that the speed of the bucket remains constant as it is lifted

**Art**

How does the medium influence the way we perceive the art, and the value we may give to a particular piece?

**chemistry**

arrange these seven substances in order from highest melting point to lowest melting point. H2O, MgO, CCl4, CH2Cl2, CaCl2, N2, PF3

**intermolecular forces**

arrange these seven substances in order from highest melting point to lowest melting point. H2O, MgO, CCl4, CH2Cl2, CaCl2, N2, PF3

**Physics**

A helicopter is ascending vertically with a speed of 4.50 m/s. At a height of 65 m above the Earth, a package is dropped from a window. How much time does it take for the package to reach the ground? [Hint: The package's initial speed equals the helicopter's.]

**Physics please help!!**

A car starts from rest and travels for 5 seconds with a uniform acceleration of 2m/sec^2. The driver then applies the breaks causing a deceleration of 1.5m/sec^2. If the breaks are applied for 4 second, how fast is the car going after the breaking period?

**Physics**

A horse canters away from its trainer in a straight line, moving 160 m away in 12.0 s. It then turns abruptly and gallops halfway back in 4.5 s. (a) Calculate its average speed.m/s (b) Calculate its average velocity for the entire trip, using "away from the trainer" ...

**Physics please help!!**

A mass M is initially at rest on a horizontal surface, μs=0.30 and μk=0.20 . A horizontal string then pulls M with a tension T. Forces below are magnitudes. Indicate if each statement is correct or incorrect If M does not accelerate, then T ≤ μsN M will ...

**Physics please help!!**

Those answers are coming up as wrong too. This problem is really frustrating me. I don't know what else to do.

**Physics please help!!**

I have already and the answers I submit is wrong. If M does not accelerate, then T ≤ μsN I M will accelerate if T exceed μsN I The NET force on M (if M does not move) is T C N equals Mg C T equals μsN if M remains at rest C M will accelerate if T exceeds...

**Physics please help!!**

A mass M is initially at rest on a horizontal surface, μs=0.30 and μk=0.20 . A horizontal string then pulls M with a tension T. Forces below are magnitudes. Indicate if each statement is correct or incorrect If M does not accelerate, then T ≤ μsN M will ...

**Word within the word list 9**

what are the answers to vulpine:porcine:: clever:gluttonous fox:grapes telegraph:photograph ignominious:glorious Please respond asap thanks!

**English**

Thank you, I made an 88.2 :)

**English**

I forgot to put the answers that I thought, but there they are :)

**English**

Sorry, C A C D A C A D A C A A C C D D C

**English**

Works such as "To Build a Fire" gave Naturalist writers such as Jack London a platform to argue that (Points : 5) human wisdom ingenuity can solve all problems. life in the woods is fun and easy. natural forces are powerful and unpredictable and deserve respect. the...

**Physics**

M2 is supposed to be hanging down from the pulley

**Physics**

Two blocks are arranged as shown. The pulley can be considered to be massless, and friction is negligible. M1 is four times more massive than M2. M1--->0(Pulley) V V (down direction) V M2 If the system is released from rest, how far will M1 travel in 0.523 s?

**Physics please help!!**

Oh gosh, can't believe I misread that. Thank you.

**Physics please help!!**

How do I find the time? How is 90.0 m/s converted to seconds? Isn't that what I need to plug into the quation?

**Physics please help!!**

A man with mass m =96.4 kg (weight = 212.1 lbs is walking towards a patio at 2.00 m/s (4.47 mph) when, at the last moment, he realizes the sliding glass door is closed. He puts out his hand suddenly to stop himself, and comes to a halt in 90.0ms. Find the magnitude of the ...

**Physics**

A man with mass m =96.4 kg (weight = 212.1 lbs is walking towards a patio at 2.00 m/s (4.47 mph) when, at the last moment, he realizes the sliding glass door is closed. He puts out his hand suddenly to stop himself, and comes to a halt in 90.0ms. Find the magnitude of the ...

**Physics**

A 43.3 kg boy and a 60.0 kg girl are on the surface of a frozen lake, 10.5 m apart. Using a rope, the boy exerts a horizontal 5.90 N force on the girl, pulling her toward him. Calculate the magnitude of the boy's acceleration.

**Physics please help!!**

A 43.3 kg boy and a 60.0 kg girl are on the surface of a frozen lake, 10.5 m apart. Using a rope, the boy exerts a horizontal 5.90 N force on the girl, pulling her toward him. Calculate the magnitude of the boy's acceleration.

**Physics**

One of the fastest recorded pitches major-league baseball, thrown by Nolan Ryan in 1974, was clocked at 100.8 mi/hr. If a pitch were thrown horizontally with this velocity, how far would the ball fall vertically by the time it reached home plate 60.0 ft away?

**Physics please help!!**

A quarterback takes the ball from the line of scrimmage, runs backward for 11.1 yds, then runs sideways parallel to the line of scrimmage for 17.8 yds. At this point, he throws a 52.7 yd forward pass straight downfield, perpendicular to the line of scrimmage. What is the ...

**science**

how many different elements are bonded to carbon in the molecule of luminol?

**Science**

They are in the same group of 16. oxygen has 6 valence electrons selenium has also has 6

**Help! Physics!**

A person walks 23o north of east for 4.8 km. How far would a person walk due north and due east to arrive at the same location.

**Physics please help!!**

A peregrine falcon dives at a pigeon. The falcon starts downward from rest and falls with free-fall acceleration. If the pigeon is 82.8 m below the initial position of the falcon, how long does it take the falcon to reach the pigeon? Assume that the pigeon remains at rest.

**Physics**

A peregrine falcon dives at a pigeon. The falcon starts downward from rest and falls with free-fall acceleration. If the pigeon is 82.8 m below the initial position of the falcon, how long does it take the falcon to reach the pigeon? Assume that the pigeon remains at rest.

**Physics**

A ball is thrown directly downward, with an initial speed of 6.10 m/s, from a height of 31.0 m. After what interval does the ball strike the ground?

**Physics**

A ball is thrown directly downward, with an initial speed of 6.10 m/s, from a height of 31.0 m. After what interval does the ball strike the ground?

**Physics**

A ball is thrown vertically upwards with an initial velocity of 27.0 m/s. Neglecting air resistance, how long is the ball in the air?

**Physics**

A ball is thrown vertically upwards with an initial velocity of 27.0 m/s. Neglecting air resistance, how long is the ball in the air?

**physics**

A trapeze artist, starting from rest, swings downward on the bar, lets go at the bottom of the swing, and falls freely to the net. An assistant, standing on the same platform as the trapeze artist, jumps from rest straight downward. Friction and air resistance are negligible...

**Chemistry**

a. 12

**math**

Use the digits 0,2,4,5,6 and 8 to write two money amounts that you can subtract by trading 1 dime for 10 pennies. Then solve.

**physics**

A 3.20 kg block is pushed along the ceiling with a constant applied force of 85.0 N that acts at an angle of 55.0° with the horizontal. The block accelerates to the right at 7.50 m/s2. Determine the coefficient of kinetic friction between block and ceiling. Would ...

**Physics**

The speed of a vehicle is 3.56 meters per second. Select from the list below all of the answers which express that speed and which are formatted so that CAPA can judge the answer [* means multiply, ^ means raise to a power, / means divide]. (Entering the NUMERICAL VALUE and ...

**Physics**

Calculate the volume of a spherical balloon which has a surface area of 0.0793 m2

**Civics and Economics**

what is the purpose of a fillibuster

**Pre-Algebra**

Mistu purchased a basketball hoop for her driveway from a sporting goods store. After the sales tax rate of 5.5% was applied, the total cost came to $179.35.How much money would Mistu have saved if she had used a coupon good for 10% discount?

**3rd grade social studies**

what is Acropolis and where was Acropolis? Thanks!

**3rd grade social studies**

what is agora

**3rd grade social studies**

geography why were seas important on the continent of Europe? What were seas used for? Please help! Thanks.

**Chemistry**

Determine the mass of phosphoric acid that can be produced by the reaction of 1 ton of phosphate rock, Ca(PO4)2, and sulfuric acid.

**Chemistry**

Determine the mass of phosphoric acid that can be produced by the reaction of 1 ton of phosphate rock, Ca(PO4)2, and sulfuric acid.

**Chemistry**

Determine the mass of phosphoric acid that can be produced by the reaction of 1 ton of phosphate rock, Ca(PO4)2, and sulfuric acid.

**11th grade**

d sensitive to variations in any currency

**math**

16g of mix for each litre of water so how many grams in 100ml

**10th grade**

A volume is measured experimentally as 4.5 mL. What is the percent error, given that the correct value is 4.17 mL? answer units in %

**5th grade math**

No, divide 24 by 3/4. remember you need to multiply by the opposite of the fraction so it is 24 times 4 and dived by 3 :) answer:32

**Precalculus**

2sin^2x+3cosx=3 find all solutions in the interval [0,2pi]

**Precalculus**

2sin^2x+3cosx=3

**science**

To know what kind of disease/health condition that you may be at risk of.

**9th grade**

at 20 degrees celsius, how much sodium chloride could be dissolved in 2 L of water?

**Physics**

if a 120-g mass is placed at the 25-cm mark and a 25-g mass at the 10-cm mark, where should a 500-g mass be placed to balance the system?

**Math**

The shorter leg of a right triangle is 14 feet shorter than the longer leg. The hypotenuse is 26 feet. How long is each leg?

**sociology**

It's funny... they're still using this question even now. I have sociology right now and this was our week 7 assignment. Good to know things haven't changed, huh?

**math**

what set of 7 numbers have the following landmarks'''' mode 21 median 24 maximum 35 range 20

**Finance**

John has a chocie to make between two investment opportunities. investment 1, would bear a interest of 12.5% over a period of 5 years but is taxable. investment 2 would bear an interest of 8% over the same period but is tax exempt. If john 's taxable rate is 12% which ...

**physics**

Review Conceptual Example 2 in preparation for this problem. In Figure 5.4, an object, after being released from its circular path, travels the distance OA in the same time it would have moved from O to P on the circle. The speed of the object on and off the circle remains ...

**math**

$240

**physics**

I think that power is actually equal to the change in voltage multiplied by the current, not just the voltage itself. Or at least that is what my formula sheet says. Good luck! I'm working on the same question

**Math**

If Betsy leaves Town A traveling due east for 6 miles to Town B, then turns due north and travels 9 miles to Town C, how far will her trip home be to Town A as she travels directly southwest?

**Math**

If Betsy leaves Town A traveling due east for 6 miles to Town B, then turns due north and travels 9 miles to Town C, how far will her trip home be to Town A as she travels directly southwest?

**physics**

its not right. i checked

**physics**

A rocket of mass 4.50 105 kg is in flight. its thrust is directed at an angle of 64.0° above the horizontal and has a magnitude of 7.50 106 N. Find the magnitude and direction of the rockets acceleration. Give the direction as an angle above the horizonal.

**physics**

A 1000 kilogram car traveling at 25 mph hits a 60 kg person. How much force is exerted on the person?

**math**

47.6

**physics**

A 1000 kilogram car traveling at 25 mph hits a 60 kg person. How much force is exerted on the person?

**Math**

Name 3 different ways in which these numbers can be classified. 11 4.5 50 8 16 3/5 100 20 9 8.6 14 1/2

**math**

Name some different ways in which these numbers can be classified. 11,4.5,50,8,16,3/5,100,20,9,8.6,141/2

**Physics & Calc**

Derive the stationary target equations: v1 = [(m1-m2)/(m1+m2)]v1 v2 = [(2m1)/(m1 + m2)] v1

**physics**

A woman stands on a scale in a moving elevator. Her mass is 71.0 kg, and the combined mass of the elevator and scale is an additional 815 kg. Starting from rest, the elevator accelerates upward. During the acceleration, the hoisting cable applies a force of 9440 N. What does ...

**physics**

The weight of an object is the same on two different planets. The mass of planet A is only fifteen percent that of planet B. Find rA/rB, which is the ratio of the radii of the planets.

**physics**

A rock of mass 48 kg accidentally breaks loose from the edge of a cliff and falls straight down. The magnitude of the air resistance that opposes its downward motion is 275 N. What is the magnitude of the acceleration of the rock?

**Physics**

Water is moving with a speed of 5.0 m/s through a pipe with a cross-sectional area of 4.2 cm2. The water gradually descends 8.2 m as the pipe increases to 9.0 cm2. (a) What is the speed at the lower level? (b) If the pressure at the upper level is 1.8 × 105 Pa, what is ...

**physics please help**

I used the same equation as you did for average force, but when I divided change in momentum by time of impact I got 444. averageforce=changemomentum/timeimpact =(1.80)/(4.05*10^3) = 444.4

**Math**

If n ÷ d gives a display of 16.8, does d\n? Why

**Physics - Standing Waves**

a) It's a straight line because it is a function os the form y=mx+b b) The slope of the line if m=0.5 c) The intercept of ln v is -0.5ln(LMD) and the intercept of the ln T axis is 0.5 ln (LMD)

**chemistry**

What is the molarity of NaOCL in a solution of bleach if 10.00mL requires 22.35mL of 0.0291 M Na2S2O4 to reach the endpoint.

**p``**

At a time when mining asteroids has become feasible, astronauts have connected a line between their 3640 kg space tug and a 6500 kg asteroid. Using their ship's engine, they pull on the asteroid with a force of 490 N. Initially the tug and the asteroid are at rest, 500 m ...

**Physics**

An office window has dimensions 3.6 m by 2.5 m. As a result of the passage of a storm, the outside air pressure drops to 0.925 atm, but inside the pressure is held at 1.0 atm. What net force pushes out on the window?

**5th grade math**

3x=x with x= the quantity the brother has

**Physics**

Apply T=T and use uk an us but u must have uk biger than the force

**Chemistry**

How fast must a 144 g baseball travel in order to have a de Broglie wavelength that is equal to that of an x-ray photon with = 100. pm?

**Chemistry**

Calculate the energy difference (E) for the transition from n = 1 to n = 6 energy levels of hydrogen per 1 mol of H atoms. (Report your answer to at least 3 significant figures.)

**chemistry**

Suppose the ΔGof, ΔHof, and ΔSo are available and valid at 298 K. Which equation(s) could be used to calculate the change in Gibbs Energy if all product and reactant concentrations (pressures) are 1 M (1 atm) and the temperature is 298 K? Choose all that apply...

**chemistry**

how quickly must a 54.7 g tennis ball travel i order to have a de Broglie wavelength that is equal to a photon of green light?