# Posts by jessica

Total # Posts: 3,314

**Physics**

two particles of mass m1=1.5 kg, and m2=3.5 kg undergo a 1-dimensional head-on collision. Their velocities along x are V1i=12 m/s, and V2i=-7.5 m/s. The 2 particles stick together after the collision. a.) Find the velocity after the collision. b.) How much kinetic energy is ...

**Physics**

A skier of mass 110 kg travels down a frictionless ski trial. a.) If the top of the trail is a height 200m above the bottom, what is the work done by gravity on the skier? b.) Find the velocity of the skier when he reaches the bottom of the ski trail. Assume he starts form ...

**Math-Trig**

Answer to four significant figures, or to the nearest minute. f) one vertex angle of a rhombus is 25°. Find the ratio of the diagonals.

**Statistics life orientation**

Yes

**Math**

John can paint a room in 3 hours. His apprentice, working alone, requires 6 hours to do the same job. How long would it take John and his apprentice, working together, to paint the room if they continue to work at the given rates?

**algebra**

find the amount of an annuity that consists of 22 monthly payments of $800 each into an account that pays 2% interest per year, compounded monthly.

**Language arts unit 3 lesson 5 second read**

1.A 2.A 3.B 4.B 5.D

**PHYSICS!!**

The answers are: a)6.79 m/s b) 55.2J Not too sure on how to get these answers!!Please Help!

**PHYSICS!!**

Squids and octopuses propel themselves by expelling water. They do this by taking the water into a cavity and then suddenly contracting the cavity, forcing the water to shoot out of an opening. A 6.50 daN squid (including the water in the cavity) that is at rest suddenly sees ...

**physics**

A spring has an unstretched length of 10 cm . It exerts a restoring force F when stretched to a length of 12 cm . For what total stretched length of the spring is its restoring force 3F? At what compressed length is the restoring force 2F? I keep doing this but I do not think ...

**math**

Anna is designing rectangular garden that has an area of 182 square feet, and the length is longer than the width. The table lists the possible whole number dimensiones for the garden. Which dimensiones are missing?

**home economics management**

What are the careers in home economics

**Physics**

What is the potential energy, in joules, of a spring with a force constant of 6 N/m when it is stretched 20 cm from its unstretched length

**Geometry**

A segment with endpoints (3, -2) and (4, 2) is dilated to the image segment with endpoints (9, -6) and (12, 6). What is the scale factor for the dilation? 3 2 6 **my choice 9 **i feel its this one too, im stuck

**Biology**

Which organelle would you expect to find in the cells of a fern, but not in a flatworm? chloroplast **my choice nucleus ribosome mitochondria

**English**

Lol ok

**English**

Why does the Rabbi's son abandon his father on the march to Buchenwald? He believes his father is better off without him. He wants to be free from the responsibility of his father. He doesn't want to tell his father he doesn't believe in God. <~my choice He ...

**math**

You are dealt one card from a standard 52-card deck. Find the probability of being dealt a card greater than 2 and less than 7. I got 5x4=20/52=5/13

**Spanish**

d

**math**

The length of a rectangular piece of steel in a bridge is 4 meters less than triple the width. The perimeter of the piece of steel is 56 meters. Find the length of the piece of steel. Find the width of the piece of steel.

**math**

An automobile tire has a diameter of 63 cm. What is the circumference of the tire? (Use pi equals3.14 as an approximate value.)

**math**

This table shows the distances and time wade walked in two days. Friday 1.5 miles 0.5 hours Saturday 1.15miles 0.4 hours on which of these days did wade walk at a faster rate?

**math**

6 points above par is represented by a negative number

**math**

two cruise ships sail from NY to FL.ONE ship make the round trip in 8 days.the other ship make the round trip in 10 days.both ships sail from ny today.which is the fewest number of days before both ships will sail again from newyork on the same day?

**math**

if a number line is divided into 8 equal parts,then each part represents %

**math**

sade found that 75% of 60 is the same as 30% of another number,n.what is the value n?

**math**

Aj bought a portable game system on sale for $150.the portable game system was 70% of the regular price.aj concluded that the original price of the portable game system must have been $225. Aj correct? justify your answers part b is 70% of an original price the same 30% of an ...

**Algebra**

A rectangular lap pool has a constant depth. The length of the pool is 9 times the width, and the surface area of the water is 81 square feet. What are the dimensions of the pool? Include units.

**Science**

Yes they all right

**History**

magine you work in a steel mill in a large industrial city in England in the late 1800s. You live in a neighborhood with other factory workers, and share the same living and working conditions they do. Write a letter to your representative in Parliament expressing your ...

**math**

Sam cut the pie into 6 pieces

**physics**

Women and overweight people often experience backpain. Let us explore the reason for this. Assume the women has a weight of 60.0 daN before pregnancy. Suppose she gains 10.0 daN during pregnancy, due to weight of the fetus, placenta, amniotic fluid, etc. To make the ...

**Geometry**

Which answer is not a theorem or postulate used to prove triangles similarity? SAS SSA ~~my choice SSS AA

**Geometry**

A triangular pyramid is defined by the points .The pyramid is then reflected over the xz-plane. The reflected image is then translated 3 units back, 2 units left, and 4 units up. Write the general rule you use for the reflection. Show the results of your calculations for the ...

**Geometry**

Which is the formula for the surface area of a sphere with radius r? S=4πr2 S=2/3πr3 S=4/3πr3 S=2πr2 ~~My choice

**Math**

Find the sale price Cost:$67.20 Present markup:10%

**math**

How to cut 10 boards that are 7.8 feet long into 2.25 feet long siding for a porch?

**Math**

Toronto is playing Anaheim in the Stanley cup final. The first team to win four games is the new NHL champion. If the probability of that Toronto will win any game is 0.55 determine the probability that Anaheim wins the Stanley Cup.

**4th grade math**

Mario cut a pizza into 9 equal slices. He put a slice on each of 5 plates. What is the measure for the angle of the slices that are left?

**math**

Mario cut a pizza into 9 equal slices. He put a slice of pizza on each of 5 plates. What is the measure for the angle of the slices that are left?

**Art**

No that's wrong the only thing that's right is 3.😒 Thanks alot

**Chemisty**

You have 775 mL of an 0.11 M acetic acid solution. What volume (V) of 1.10 M NaOH solution must you add in order to prepare an acetate buffer of pH = 5.05? (The pKa of acetic acid is 4.76.) I don't know what to do!!! HELP!!!!

**Art**

What was the answer?

**Geometry**

What does the radius of a sphere join? any two points on the sphere and does not contain the center any two points on the sphere and contains the center <~my choice any two points on the sphere the center and a point on the sphere

**Poetry 7 - Check please!**

me too thx anonymous

**Geometry**

What does the diameter of a sphere join? any two points on the sphere any two points on the sphere and contains the center <~my choice any two points on the sphere and does not contain the center the center and a point on the sphere

**Math**

THis is the question posed to me by mi bio teacher. THe more specific of it it is, "find the masss of a liver cell, assuming it has the shape of a cube, with the diameter and density of water."

**Math**

So, I need to find the mass of a cube. I have diameter of 16.4 micrometers, and density of 1,000 kg/m3. I can find all kinds of formulas for spheres, but not for cubes?

**History**

What did John Locke believe? Absolute monarchs have the right to rule through divine right. God should not be involved in the affairs of mankind. All governments should have three branches with equal power. <~my choice It is the governments job to protect the natural rights...

**Art**

Is it c?

**Maths**

Find a number between 20 and 30 that is half the sum of its factors

**Art**

c

**Geometry**

In the surface area formula for cylinders, which expression represents the lateral area? πrh 2πrh <~my chocie πr*2 2πr*2

**Art**

1.C 2.A 3.C 4.D 5.B

**History**

2. In the space below, create a simple time line that traces the emergence of a constitutional monarchy in England during the seventeenth century. It is not necessary to include exact dates, but events should be in the correct order. Include at least eight events that were ...

**Precalculus**

sketch the graph of each equation y=4x-x2

**math**

The master bedroom of Julie's new apartment measures 10.5 feet by 16 feet. What is the area of the room?

**HISTORY**

1. Explain from the Gilded Age that supports the "the farmers were up in arms." 2. What is one change in the South between 1877 and 1900 that reflected the policies of the New South agenda?

**phys**

I got it it was 2.1 x .5 then i calculated it now I am trying to figure out What the car's displacement is from its original position? how would I figure that out do I divide from the 2.1 and the 1.05?

**phys**

A circular test track for cars has a circumference of 2.1 km . A car travels around the track from the southernmost point to the northernmost point what distance does the car travel?

**Chemistry**

thank you so much DrBob222 ^^

**Chemistry**

A certain amount of calcium reacts with water and the formed hydroxide 49g completely neutralized phosphoric acid. Calculate the volume of hydrogen obtained, at STP, and the mass of calcium.

**science**

The length of an aluminium bar of length 80 cm increases by 1 mm on heating.What is the final temperature of the bar if it was initially at temperature 20 degree Celsius? (coefficient of linear expansion of aluminium =25*10-6/degree Celsius)

**science**

the length of an aluminium bar of length 80 cm increases by 1 mm on heating. What is the final temperature of the bar if it was initially at temperature 20 degree celsius? coefficient of linear expansion of aluminium =25*10-6/ degree celsius

**English**

Can someone please check my answers for finding the subject and verb these sentences? The milk in the back of the refrigerator is probably spoiled by now. S= milk V= is spoiled The family that lives in the brown house moved in just a month ago. S= family V= moved Jackie, Gwen...

**Chemistry**

thank you bobpursley

**Chemistry**

On calcination 80g of a marble were obtained 42 g of calcium oxide. The degree of purity of marble?

**Setswana**

Tlhamo two page. Kgwebo ee tlhakanetshweng e gaisa ya motho a le esi.

**math**

Stop being stupid Reiny and just help "Help me Asap"

**CHEMISTRY**

1.) 2 methylpropene is a compound used to make synthetic rubber. A sample of 2 methylpropene contains 0.566 g C and 0.0933 g H. Determine its empirical formula

**U4 connexus test answers**

Have you seen the test? I'm a parent and the questions are ridiculous. I can't even do the math and I sat through the lessons and have a double master's. So, Good Luck Student! This test is stupid and hard.

**Chemistry**

An ion of sulfur has a smaller atomic radius than a neutral atom of sulfur because it loses an electron when becoming an ion. True or False?

**Social studies**

anon is right

**Chemistry**

Lglelglelelel

**Chemistry**

Umm... Im in something grade. I don't know this stuff. hi

**Physics with Calculus**

Megurine, no... I think I am having trouble solving for q3 using both Coulomb's Law and the superposition principle. So far I have 31.78326213+Fsub3=7.954

**Physics with Calculus**

qsub1:-2.8uC qsub2: 6.6uC qsub2 sits 7.9 cm away from qsub2, and in a previous question moved up the y axis 2.7cm. The question that I am having difficulty with has added qsub3 in the middle of of qsub1 and qsub2, changing the magnitude of Fsub2net= 7.954. What is the sign and...

**math**

In a fruit basket 1/4 of the fruits are bananas and 3/8 are mangoes.Which are more the bananas or the mangoes? Solution

**Math**

Which equivalent fraction would you have use in order to make 3/5 to 21/25?? Plz have an explanation of how you solved the answer and not just one sentence. Thank you!!

**Math**

Car 1 & Car 2 leave the same location . Car 1 leaves the location 10 minutes before Car 2 and is traveling 65 mph. Car 2 is traveling at 75 mph. How long before Car 2 catches Car 1?

**wrtiting**

Robert Created a pattern by starting with the numbre 5 using the rule múltiply by 2,then subtract 3 write the next 5 terms in the pattern

**heath**

(1)A (2)B (3)C

**PHYSICS**

FIND THE MASS OF A 200 n BABY ELEPHANT

**Trigonometry**

A plane leaves an airport and flies at 36 mph on a course of 103.25° for 1 hour and 33 minutes. Then it changes course to 236.75° and flies for 48 minutes. How far is it from the airport? If it wished to return, what would be its course?

**health**

3. D

**Algebra 1**

An experiment is underway to test effect of extreme temperature on a newly developed liquid two hours into the experiment the temperature of the liquid is measured to be-17 degrees Celsius after eight hours of the experiment the temperature of the liquid is -47 degrees Celsius...

**Chemistry**

If a basic solution has a pH of 11.88, is it considered to be a strong base? Is an acidic solution with a pH of 4.44 considered to be a strong acid?

**English**

I need some help with this question

**English**

Martin Luther King begins his letter with the following paragraph: While confined here in the Birmingham City Jail, I came across your recent statement calling our present activities "unwise and untimely." Seldom, if ever, do I pause to answer criticism of my work ...

**math**

3/6

**math**

a customer went to a garden shop and bought some potting soil for 17.50 and shrubs. if the total bill was $71.00, how much did each shurb cost if they all cost the same? write and solve an equation. show your work

**technoligy**

1:D 2:A 3:B 4:C anonymous is right

**Math**

The first term in a sequence is 4 and each of the following terms is found by multiplying the previous term by n. What is the fifteenth term? Is the answer 4n(15)?

**Algebra 1**

Eight times the sum of 11and a number is 123

**math**

Suppose you have $60 to buy shrimp and chicken wings for a party. Shrimp costs $10/lb and wings cost $6/lb. Write and graph a linear equation that could be used to determine the number of pounds of each food that can be purchased with $60 Would I start with the y = mx + b 60...

**Math**

A utility company has the following rate schedule for natural gas usage in a city's business district: Monthly service charge $8.80 per therm service charge: 1st 25 therms: $0.6686/therm over 25 therms: $0.85870/therm (a) what is the charge for using 25 therms in one month...

**Math**

A quality company verifies 2 shirts from the same box to insure the quality of the shirts that are being sent out. If each box contains 3 small, 4 medium, and 2 large shirts, what is the probability that they will pick the same size shirt for a box? I am unsure how this ...

**math**

Rachel deposited $6,004 in a savings account with simple interest. Three months later, she had earned $210.14 in interest. What was the interest rate?

**chemistry**

Write the net ionic equation for the following molecular equation. 3FeCl2(aq) + 2(NH4)3PO4(aq) Fe3(PO4)2(s) + 6NH4Cl(aq)

**AP Physics**

A ball is kicked 30º above the horizontal with an initial velocity of 20m/s. A fence 2.3 meters high is located 32 meters away. a. How long does it take to reach the fence? b. Does it goes over the fence? Does it hit the ground before? By how much? I believe I have to ...