# Posts by kaitlyn

Total # Posts: 299

**Physics**

Question: You have a 4.5 kg lead block at room temperature. Part A: Find the energy required to raise the lead’s temperature to its melting point. Part B: Find the energy required to melt the lead once it’s reached the melting point. I got the answer to part A. It is...

**Math #3**

Which is likely to have a mass close to 3 kilograms? A: a 5-year-old child B: a bowling ball*** C: a lemon D: an adult lion Can someone check this plz

**Math **

A bean plant was 1.5 meters high one week ago. In 7 days it grew 15 centimeters. Find the current height of the bean plant. A)1.35 m B)13.6 cm C)1.65 m *** D)1.85 cm Can someone check this plz?

**Social Studies Please help**

Oh ok.... What is the answer to this?

**Social Studies Please help**

Why not, I thought that's what your supposed to do

**Social Studies Please help**

If anyone can check my answer that would be great!

**Social Studies Please help **

Which statement best evaluates the results of Greece's membership in the European Union A. Greece's overall economy has improved because of increased trade. B. Greece's overall economy has improved because the euro is a strong Currency. C. Greece's overall ...

**SS Help**

yes ma'am do you know the question?

**SS Help**

......

**SS Help**

if anyone could help me I love it!

**SS Help **

Which statement best evaluates the results of Greece's membership in the European Union? MEDAL!!! A) Greece's overall economy has improved because of increased trade. B)Greece's overall economy has struggled because the euro is a strong currency. C) Greece's ...

**ED TECH HELLLLPPP**

Word is better for research projects that have audio clips, text and images

**ED TECH HELLLLPPP**

A powerpoint has transitions and Word doesn't

**ED TECH HELLLLPPP **

Selena needs to publish her research about Chinese culture. Her research includes audio clips from an interview with a Chinese citizen, written notes, and photographs from her tour of a Chinese exhibit in a local museum. Based on each application’s strengths and ...

**Math**

yep

**Physics**

In the figure, the meterstick's mass is 0.130 kg and the string tension is 2.30 N . The system is in equilibrium. A) Find the unknown mass m. B) Find the upward force the fulcrum exerts on the stick. I found part A and the answer is .634kg but I can not figure out part B.

**algebra**

2L*2W

**algebra**

the length of a rectangle is 5 times its width. if the length is decreased by 3 meters, and the width is increased by 10 meters, the perimeter will be 374 meters. find the length of the original rectangle.

**Math**

Paige cuts a square out of a circular pizza. The corners of the square lie on the circumference of the pizza.to the nearest whole number, what percent of the pizza is left when paige removes the square.

**Math**

In scientific notation, what is the product of 1.2 × 10^3 and 1.4 × 10^2? Express your answer to two significant figures. Can you also explain how to do this? Thanks!

**Math**

The tires on a car are 25 inches in diameter. If the car is moving at a constant speed of 65 miles per hour, how many rotations per second is the front left tire making? Express your answer as a decimal to the nearest tenth. (1 mile = 5280 feet)

**Science**

What propity makes a metal useful in a electical devices

**Chemistry**

How much heat energy is required to heat up 50.0 grams of water from 20.2 degrees Celsius to 34.2 degrees Celsius? I want o use the Q=mc(change in temp) formula but I am only given the m and difference in temp in this question so I am not sure of what I am supposed to do.

**math**

Jose was 62 years old nineteen years ago. how old is he now?

**ART**

yes

**Math**

you bought 10 gallon jugs of juice for $26 if apple juice cost $2 per gallon and orange juice costs $3.50 per gallon how many of each type did he buy

**Calculus**

(b) Find a solution of the initial-value problem. (Hint: First verify that all members of the family y = 4/x + C are solutions of the given equation.) y' = −1/4y^2 y(0) = 0.25

**SS**

me too

**Calculus**

Use Euler's method with step size 0.2 to estimate y(1), where y(x) is the solution of the initial-value problem given below. (Round your answer to four decimal places.) y' = 1 − xy y(0) = 0 I don't even know how to start!

**math**

Given the data set (5, 9), (13, 12), (23, 16), which of the following equations best represents a line of best fit? y = three fourthsx − 7 y = four fifthsx + 7 y = three over twox + 7 y = two thirdsx − 7

**Calculus**

Sketch the region on paper. If it is a finite region, find its area. Round your answer to three decimal places. (If the area is not finite, enter NONE.) S = {(x,y) | x ≥ −4, 0 ≤ y ≤ e-x/2}

**Calculus**

Use Simpson's Rule with n=10 to estimate the arc length of the curve. Compare your answer with the value of the integral produced by your calculator. x = y + y^(1/2), 1 ≤ y ≤2

**Calculus**

Internal 1/sqrt(1+x^3) from [0,2] and n=10 (a) Use the Trapezoidal Rule to approximate the given integral with the specified value of n. (b) Use the Midpoint Rule to approximate the given integral with the specified value of n. (c) Use Simpson's Rule to approximate the ...

**Calculus**

Consider the following depiction of a tank with radius r = 9 meters with a spout of height h = 4.5 meters. A tank is is half full of oil that has a density of 900 kg/m3. Find the work W required to pump the oil out of the spout. (Use 9.8 m/s2 for g and 3.14 for π. Round ...

**chemistry**

How many moles of chlorate ions, zinc ions, and oxygen atoms are present in 0.433 mol of zinc chlorate?

**Chemistry**

How many moles of carbonate ions, aluminum ions, and oxygen atoms are present in 39.0 g aluminum carbonate?

**Calculus**

Consider the following depiction of a tank with radius r = 9 meters with a spout of height h = 4.5 meters. A tank is half full of oil that has a density of 900 kg/m3. Find the work W required to pump the oil out of the spout. (Use 9.8 m/s2 for g and 3.14 for π. Round your...

**Chemistry**

Assume the reaction of 55.25 g of Ge in the following reaction to determine the other quantities. 3Ge + 2N2 -> 1Ge3N4

**Chemistry**

The elements 57 through 71 (Lanthanum and the Lanthanoids) all form Ln+3 ions in aqueous solution. These all have an electron configuration is [Xe]4fn, where n increases from zero to fourteen over the series from Lanthanum to Lutetium Select the two ions that have 4 unpaired ...

**Geography**

What was the goal of the philosophers? Did their movement have an impact on our lives today?

**Geography**

In what model of the universe did philosophers of the middle ages believe? Give details

**Geography**

Describe two inventions that helped spark the scientific revolution and their impact

**Chemistry**

Assuming that the Bohr model is valid, what is the kinetic energy of a photoelectron liberated by a photon with a the given wavelength from a state with given Z and n? If the available energy is insufficient to break the tether, enter 0. λ=320 nanometers from a state with...

**Chemistry**

How many grams of CO2 (Mm = 44.0 g/mol) are produced in the combustion of 31.0 g of C4H10 (Mm = 58.1 g/mol)?

**Calculus**

Suppose that 5 J of work is needed to stretch a spring from its natural length of 28 cm to a length of 36 cm. (a) How much work is needed to stretch the spring from 32 cm to 34 cm? (Round your answer to two decimal places.) (b) How far beyond its natural length will a force of...

**Calculus**

Graph the curve. Find the exact length of the curve. x = 2et cos(t), y = 2et sin(t), 0 ≤ t ≤ π

**Health connexues academy**

its either c or d! welcome boo <3

**math**

Jayda deposited $1500 into savings account that pays 3% simple interest per year. How much interest does she earn per year on her investment?

**Calculus**

Find a function of the form f(x)=a+bsqrtx that is tangent to the line 2y-3x=5 at the point (1, 4)

**Chemistry**

How much total work does a golf caddy do if he lifts a 300 N golf bag he is carrying 100 times a during a round, to a height of 1.0 m each time he lifts it?

**Math**

it is 22 hits multiplication property of equality

**Social studies need help ASAP!!!!!**

I don't need to drop this class I have good grades in this class it's just this one lesson that I have a problem with so don't tell me that I need to drop this class when I don't all I need is help @Ms.Sue

**Social studies need help ASAP!!!!!**

I've read all the material over nod over again and I still can't figure it out @reed

**Social studies need help ASAP!!!!!**

1. Which data tell you how much the price of goods inflates over a period of time? A. consumer price index B. gross domestic product C. unemployment rate D. economic indicator 2. what does the gross domestic product measure? A. the value of the U.S. and foreign goods during a ...

**State History**

Can you help me we go to the same school I think and I figured we can help each other out (I go to connections academy ) @CountryQueen

**precal**

Help please! sin4x=3cos^3xsinx-4sin^3xcosx

**History**

Hey @CountryQueen did u get the answers to this test because I could really use the help

**Art**

You really shouldn't be giving the answers to the students at least ask then and help them along the way :)

**algebra**

Replace the equation in which the variable of the expression appears only once with a positive positive number for its exponent. (16x^2)/(16x^5)

**Please Help! Need my work Checked! Physics**

2) You take the following measurements for the distance a toy car travels in 10 seconds during each 5 trials: 157cm, 175cm, 162cm, 168cm, 187cm. What are the relative uncertainties of the distance and time measurements? Which measurement is the most uncertain? this is what I ...

**geometry**

B is the midpoint of AC. A has coordinates (-3,4), and B has coordinates (-1 1/2,1). Find the coordinates of C. Did i get the right answer? (2)-1 1/2=(2)-3+x(over 2) -3-3=3+x-3 -6=x (2)1=(2)4+y(over 2) 2-4=4+y-4 -2=y The coordinates of C are (-6,-2)

**Physics**

A car drives over a hump in the road. The radius of the (circular) hump is 45m. How fast (m/s) would the car need to travel, so that the wheels just barely lose contact with the road?

**calculus**

h(x)= x + cos(ax), where a is a positive constant such that 0 < a < 4. What values of a make h(x) strictly decreasing? I know h'(x) has to be less than zero for h(x) to be decreasing and h'(x) = 1-asin(ax). I'm not sure where to go from here...

**SS**

We aren't cheating in Connexus we need help!They don't have to say the answer they could drop hints but they don't!

**art**

?

**SPanish**

the answer is estrella

**Geometry**

"A cone has the radius of 24 and its volume is 1,920 what is the volume of a similar cone with the radius of 18 Answers A.480 B.810 C.1,080 D.1,440" How do I find the height for the similar cone to get its volume?

**Science Help Plz**

Thanks for nothing people

**Science Help Plz**

which of the following statements about earths atmosphere is true? a. earths atmosphere contains 78 percent water vapor which is essential to life b. earhts atmoshpere contains 21 percent oxygen c. earths atmosphere contains carbon dioxide which all life forms require d. ...

**Chemistry**

N2+3H2-> 2NH3 how many moles of hydrogen are needed to completely react with 2.6 moles of nitrogen?

**Social Studies**

thank you ms. sue

**Social Studies**

witch result of the compromise of 1850 did not benefit the north? a-the fugitive slave law b-californias admittance tt he union c-ending the slave trade in the district of columbia d-new mexico not being designated as a slavery trade Is it a?

**LA. MS. SUE PLEASE**

what is the secret to reaching someone with words? witch of the poems "concret mixers" "the city is so big" or "harlem night song" best uses words to create a vision or an idea of the city for you? in a paragraph, state your opinion and support it...

**Math**

An electrician charges a $50 fee to make a service call plus $25 per hour he works. Determine whether the relationship between the two variables is proportional. Hours Cost($) 1 75 2 100 3 125 4 150 Is this proportional? Because i am not sure. When i plot these points on a ...

**business**

Discussing the future of management, Manager A maintains that we can expect a continued rise of virtual management and growth in technology. Manager B acknowledges that Manager A’s projections are likely, but incomplete. He adds that there will also be an increased focus ...

**Chemistry**

b) 60%

**physics**

what should the ratio of mass to volume be when considering the flight of a hot air balloon.

**health**

What is intensity?

**Algebra 2**

Find all real zeros of the function f(x)=x^3-27x

**arithmetic**

93.5 square inches or 93 1/2 square inches since 8 1/2 multiplied by 11 is 93.5.

**1st grade**

honey it's sometimes

**physics**

In the Bohr model of the hydrogen atom, an electon mass= 9.11 x 10^-31 kg orbits a proton at a radius of 5.29 x 10^-11 m. The proton pulls on the electron with a force of 8.20 x 10^-8N. what is the speed of the electron? what is the period of the electron? I really need help ...

**Algebra 2**

Write the Expression as a complex number in standard form. 5i(3+2i)(8+3i)

**physics**

A military helicopter on a training mission is flying horizontally at a speed of 75.0m/s when it accidentally drops a bomb (fortunately, not armed) at an elevation of 310m . You can ignore air resistance. a:How much time is required for the bomb to reach the earth? b:How far ...

**Chemistry**

Nevermind i got the answer(: It is 135 Torr

**Chemistry**

A solution contains naphthalene (C10H8) dissolved in hexane (C6H14) at a concentration of 15.00% naphthalene by mass. Calculate the vapor pressure at 25 ∘C of hexane above the solution. The vapor pressure of pure hexane at 25 ∘C is 151 torr. I keep getting 168 torr...

**Algebra 2**

thanks

**Algebra 2**

For the graph y= ax^2 + bx + c, show that the y-coordinate of the vertex is -b^2/4a + c.

**Science--check my answers.**

Here are the answers 1) A 2) D 3) A 4) C 5) B 6) D 7) C 8) B 9) c 10)B

**Can you please check my answers?**

Here are the answers. Promise you I got a hundred percent. 1) Ball and socket because it allows for the most movement 2)Finger and elbow due to the similar movement 3)Hypo-dermis, dermis, epidermis 4)sunscreen 5) two bones meeting at a joint

**Astronomy Question about Neutrinos**

I can't seem to figure this out, I know that neutrinos have nonzero mass but I don't know how that can help me figure this out The mass of a neutrino is zero. equal to the mass of a proton. equal to the mass of an electron. less than the mass of an electron but its ...

**AStronomy/ Math**

Thank you

**AStronomy/ Math**

I do not understand how to do one of my online homework questions: What is the Schwarzschild radius of a 100 million-solar-mass black hole? The mass of the Sun is about 2 × 1030 kg, and the formula for the Schwarzschild radius of a black hole of mass M is: R=2GMc2, where...

**Physics**

A 245 g toy car is placed on a narrow 70-cm-diameter track with wheel grooves that keep the car going in a circle. The 1.0 kg track is free to turn on a frictionless, vertical axis. The spokes have negligible mass. After the car's switch is turned on, it soon reaches a ...

**Geometry - Area**

Thank You so much Damon!

**Geometry - Area**

Ms. Sue would you be able to help me! I don't want the straight answer i want to actually learn how to solve a question like this!

**Geometry - Area**

Find the area of a regular hexagon with an apothem 10.4 yards long and a side 12 yards long. Round your answer to the nearest tenth.

**Science HELP!**

Chemical change because there is no water left. Evaporation happened