# Posts by lily

Total # Posts: 1,561

**physics**

A mass m is attached to the end of a spring (constant k). The mass is given an initial displacement x0 from equilibrium, and an initial speed v0. Ignoring friction and the mass of the spring, use energy methods to find the following in terms of the given quantities. (Use x_0 ...

**physics**

IT DIDN'T WORK!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

**physics**

A 4.5 kg body moving in the +x direction at 5.5 m/s collides head-on with a 2.5 kg body moving in the -x direction at 4.0 m/s. Find the final velocity of each mass for each of the following situations.The collision is elastic. (4.5 kg mass) (2.5 kg mass)

**english**

thanks!

**english**

Need help with an assignment please.I am going to explain this to the class and I want to feel confident.Your help is appreciated. Its Allusion. I picked "Someone who perservers and never gives up." I have to identify what it means, and researh their story, the one ...

**spanish**

¡Muchos gracias! You were very helpful!

**spanish**

How does this sound as a restaurant review? Mi familia comimos en ese restaurante ayer. En ese restaurante Modern Apizza siempre serve pizza. Se hacen con al horno de ladrillo. Pides pizza, bebidas, ensaladas, y el pan. Pedimos ensalada de antipasto grande, de el pan, mucha ...

**history**

why do the anti federalist demand the bill of rights?

**math**

thank u !!!!

**math**

i don't no how to get the answer how many feet would it be 2 and 1/2

**math**

so 2 and half

**math**

idk plz give me answer

**math**

35 inches = ? ft

**Physics**

A student, crazed by final exams, uses a force P of magnitude 80 N to push a 4.0 kg block across the ceiling of his room. If the coefficient of kinetic friction between the block and the ceiling's surface is 0.42, what is the magnitude of the block's acceleration?

**math**

what is the answer to 2/7+3/4=

**tt**

ms. sue can you help me on my math problem and thank u

**tt**

why?

**math**

thx

**math**

is that it in simplest form

**math**

ok thank u

**math**

HELPPPPPP ms.sue u helped my fried nikki she recommened this cite to me

**math**

5/9-1/12

**spanish**

¡Gracias! I wasn't sure if it was singular or plural.

**spanish**

¿Qué _____ a Uds.? a. le falta b. les falta c. le faltan d. nos falta A?

**spanish**

Thanks!

**spanish**

Van a dar las noticias a las doce en el canal dos. Vamos _____. a. a verlas b. ver c. a ver d. las ver A?

**spanish**

Thank you, to both of you!

**spanish**

"¿Puedes sacar libros de la biblioteca?" "Sí, puedo _____ porque tengo tarjeta de biblioteca." a. las sacar b. a sacarlos c. sacarlos d. sacar B?

**spanish**

Thank you, but this is puzzling to me.

**spanish**

"¿Qué hora es?" "Son las once _____." a. por el día b. de la tarde c. de la noche d. en media hora C?

**spanish**

Thank you!

**spanish**

"¿A quién vieron Uds. en el cine?" "____ a la familia García." a. Vemos b. Vimos c. Vamos d. Yo vi B?

**spanish**

Thank you! I hope I can remember this for other problems.

**spanish**

Yo ____ está mejor o peor. a. no sé b. no sé si c. sé d. no lo sabía A?

**spanish**

Thank you!

**spanish**

El museo está ____ teatro. a. a la derecha del b. al lado de c. detrás de d. a la izquierda de la A?

**Math**

5/6

**spanish**

maidolrg

**science**

you have a liquid with a volume of 13mL and a mass of 19.5g.what is the density of the liquid?

**math**

84

**world history ap**

describe the spread of sedentary agriculture outside the older civilized areas

**Mathmetics got the answer just need steps!**

Steeeeepz for 9 8\15 Plus 11 5\12

**family math problem solving**

55

**spanish**

Thank you!

**spanish**

How does this sound? 8 de octubre ¡Hola, Marcia! Mi madre en casa de mis abuelos. No vamos al cine. Yo tengo que pasar la aspiradora y mis hermonos tienen que lavar los platos. Mi dormitorio es desordenada. Hago la cama y arreglo el cuarto. Yo tengo que sacudir los ...

**Math**

Jason walked 9/10 of a mile. Justin walked 5 3/10 of a mile. What is the difference?

**spanish**

That was all the conversation there was. I think I'll go with D.¡Gracias! You are always helpful!

**spanish**

"Para las vacaciones, sólo pienso ver la tele." "Pero,_____" a. ¿hace mucho tiempo que ves la tele? b. ¿la puedes ver los miércoles? c. no podemos ir de vacaciones d. ¿no te van a doler mucho los ojos? Is the person ...

**statistics**

suppose you believe that in general, graduates who have majored in your subject are offered higher salaries upon graduating than are graduates of other programs. describe a statistical experiment that could help test your belief. my problem with this question is what data to ...

**spanish**

¡Gracias!

**spanish**

"¿____ nadas en el mar?" "Hace dos meses." a. Cuánto tiempo hace b. Cuánto tiempo hace que c. Hace un mes d. A qué hora B?

**spanish**

Thank you!

**spanish**

"Alberto prefiere sacudir los muebles." "Creo que no. Prefiere pasar la aspiradora." "Creo que Uds._____." a. tiene razón b. están de acuerdo c. no están de acuerdo d. no tiene razón C?

**spanish**

Thank you!

**spanish**

"Margarita e Inés, ¿quién es____profesora de matemáticas?" "La señorita Hernández es nuestra profesora." a.su b.tu c.mi d.nuestro B?

**spanish**

Thanks so much!

**spanish**

"Qué____Uds. hoy?" "Mi hermano y yo vamos a arreglar la casa porque pensamos tener una fiesta este fin de semana." a.hacemos b.haces c.hacen d.hacer C?

**algabra 2**

One side of a triangle is 4 cm longer than the shortest side and 2 cm shorter than the longest side. The perimeter is 38 cm. Find the dimensions of the triangle.

**math**

a. Find the monthly payments for a simple interest amortized loan of $16000 at 7 1/8 % for 7 years. monthly payment = $ b. Find the total interest for a simple interest amortized loan of $16000 at 7 1/8 % for 7 years. total interest = $

**1st grade**

whaz up

**1st grade**

salt is for eating and did u know that salt is made of rocks and u can not eat rocks

**Physics**

A helicopter is lifting off from the ground and is moving vertically upward. The graph shows its vertical velocity vy versus time. How high is the helicopter after 7 s have elapsed?

**Physics**

At time t = 0, a hockey puck is sent sliding in the +x direction over a frozen lake, directly into a strong wind. Figure 2-13 gives the velocity v of the puck versus time, as the puck moves along a single axis. (The time axis is marked in increments of 1.0 s.) At t = 10. s, ...

**Physics**

At time t = 0, a hockey puck is sent sliding in the +x direction over a frozen lake, directly into a strong wind. Figure 2-13 gives the velocity v of the puck versus time, as the puck moves along a single axis. (The time axis is marked in increments of 1.0 s.) At t = 10. s, ...

**algebra 1**

What is the y-intercept of the graph of y=2^x+2? (0,4)?

**algebra 1**

Thanks

**algebra 1**

Is the answer no solution?

**algebra 1**

Use the Quadratic Formula to solve the equation: 5x^2 - 6x - 8=0 -.51,1.71?

**algebra 1**

Thank you!

**algebra 1**

Use the Quadratic Formula to solve the equation: 5x^2 + 9x - 2=0 -2,1/5?

**algebra 1**

Thanks again!

**algebra 1**

What is the area of a square with the dimension 1+square root of 3? a.4 b.4+2square root of 3 c.3square root of 3 d.5 B?

**algebra 1**

Thanks!

**algebra 1**

Factor the expression: x^2 - x - 42 (x-7)*(x+6)?

**algebra 1**

Thank you!

**algebra 1**

Factor the expression: 4n^3 + 8n^2 - 5n - 10 (n+2)(4n^2 - 5)?

**science**

i got 1.1e54 for the mass of protons required but it said it was wrong

**science**

What mass of protons would be required to just neutralize the charge of 1.7 g of electrons? I thought it was simple because 1 proton maxes out 1 electron but my teacher started talking abou this complicated way of doing it and i didn't get it :( can someone show me how to ...

**english**

Well many teachers have different rubrics for how they want their students to do the book report. usualy a book report contains: The Standard Format Introductory Paragraph This paragraph should include the title of the book and name of the author. It will also describe the ...

**algebra 1**

Thanks, again!

**algebra 1**

When studying probability, a method used for counting the number of possible outcomes is a ______. a.tree diagram b.dependent event c.relative frequency d.simulation A?

**algebra 1**

Thank you!

**algebra 1**

Which statistical method best represents this set of data? 1,2,5,2,3,7,300,5,3,3 a.mean b.median c.mode d.standard deviation I'm pretty sure it's B or C, but they are both the same number.

**math**

(0.80)+(0.03)=0.83

**English**

After I rewrite it please comment on it. Thanks for your help. 1)He liked shooting things, hammering things, smashing things and wrestling with his father. 2)Thirsty for knowledge, Joy leapt in his fathers heart for his son who was quick to learn. 3) In the gathering shadows, ...

**English**

How can I rewrite this? Please. He liked shooting things. (A). and wrestling with his father. (B) hammering things, smashing things. Joy leapt in his fathers heart for his son. (A) thirsty for knowledge (B) Who was quick to learn. They stood. (A) In the gathering shadows (B) ...

**algebra 1**

Thanks!

**algebra 1**

P.S. There aren't any brackets.

**algebra 1**

The y itself has a square root around it. 5+ square root of 2 is divided by 2.

**algebra 1**

This problem has a fraction in it. Solve: square root of y =(numerator) 5+square root of 2. (Denominator)2 25.5+5square root of 2?

**algebra 1**

Thank you.

**algebra 1**

Money in a bank account that compounds interest by some percentage acts______. a. linearly b. exponentially c. negatively d. like a fraction B?

**Math**

if you are talking about an object, use the water displacement method.

**math**

" A total of $32000 is invested in two municipal bonds that pay 5.75% and 6.25% simiple interest. The investor wants an annual interest income of $1900 from the investments. What amount should be invested in the 5.75% bond?"

**algebra 1**

Thank you!

**algebra 1**

This has a fraction in it. Simplify: numerator is 5 square root of 4 times square root of 8. Denominator is square root of 8 times square root of 2. 5 square root of 2?

**algebra 1 again**

Thank you for the help!:)

**algebra 1 again**

Square root of 4 is 2. 2 times 3 is 6. So 6 is the answer?

**algebra 1 again**

Simplify: 2 square root of 4 + square root of 4. 3 square root of 4?

**algebra 1**

Thank you again!