# Posts by emily

Total # Posts: 3,006

**physics**

One strategy in a snowball ﬁght is to throw a snowball at a high angle over level ground. While your opponent is watching this ﬁrst snowball, you throw a second snowball at a low angle and time it to arrive at the same time as the ﬁrst. Assume both ...

**Physics**

A football is thrown toward a receiver with an initial speed of 17.5 m/s at an angle of 35.2◦ above the horizontal. At that instant, the receiver is 16.7 m from the quarterback. The acceleration of gravity is 9.81 m/s^2 With what constant speed should the receiver run to...

**physics**

A particle travels horizontally between two parallel walls separated by 18.4 m. It moves toward the opposing wall at a constant rate of 9.4 m/s. Also, it has an acceleration in the direction parallel to the walls of 5.8 m/s^2 What will be its speed when it hits the opposing ...

**trigonometry**

4.if cotθ = -√15/7 , use the fundamental identities to find cosθ > 0 9.A projectile is fired with an initial velocity of 88 ft/sec at an angle of 35° to the horizontal. Neglecting air resistance, what is the time of impact? (Round to the nearest ...

**math**

thank you! we just learned decimals to fractions and vice versa today so I thank you for your help and now I can solve the remainder of the problem myself. thank you!

**math**

what is 1 3/4 as decimal

**Chemistry**

Hi, i'm really desperate! could anyone please help me with this question, I'm stumped. 'A buffer is prepared by mixing a 100.omL of a 0.100 M NH3 solution with a 0.200M solution of NH4CL solution and making the total volume up to 1.000L of water. What is the volume...

**English**

Thanks. Danita is saving her old watch for when the new one stops. Dependent clause when the new one stops Modifies saving Adverb

**English**

Dependent clause after he reviewed the chapter Adverb it modifies when it was easier?

**English**

I promise I have! It is just not making any sense to me!

**English**

In the sentence the homework was easier for Tyrone after he received the chapter. Is the dependent clause was easier for Tyrone? Is that a noun since it is a predicate noun?

**math**

I'm not sure what the answer is, but I think I might know how you will be able to figure it out. Take the $.01 Mary got the first week and double it to get what she got the second week ($.02). Then multiply the $.02 by 2 to get what she got the third week ($.04) Progress- ...

**English**

You might combine bits of information, that you have so far with the context. Dependent Claus that you have so far. Adjective that describes information?

**English**

Thanks. How about this one. For example, since amorphous ends in ous, it is probably an adjective. Dependent Claus since amorphous ends in ous, Adverb?

**English**

In these two I am torn between adverb and noun. If all else fails, go to the dictionary. If you are familiar with the word metamorphosis, you might figure out the meaning of morph from that word. The top one noun? The bottom one adverb?

**English**

The subject of the word gives is the dependent Claus?

**English**

I am really not understanding this at all. How a word begins and ends often gives clues to its meaning. Dependent Claus how a word begins and ends. Adverb modifying what it gives?

**English**

In the sentence still what morph means remains the critical question. Is the dependent clause still what morph means? Is it an adverb describing the clause remains?

**English**

I have to underline the dependent clause and tell whether it is an adjective, adverb, or noun. Can you help me with the following. If you sit down with a novel and a dictionary, you can refer to the dictionary often. Still what morph means remains the critical question.

**Physics**

A plane is ﬂying horizontally with speed 152 m/s at a height 2110 m above the ground, when a package is dropped from the plane. The acceleration of gravity is 9.8 m/s 2 . Neglecting air resistance,A second package is thrown downward from the plane with a vertical speed ...

**physics**

A truck travels up a hill with a 10 ◦ incline. The truck has a constant speed of 21 m/s. What is the horizontal component of the truck’s velocity? Answer in units of m/s What is the vertical component of the truck’s velocity? Answer in units of m/s

**Physics**

A person standing close to a railroad crossing hears the whistle of an approaching train. He notes that the pitch of the whistle drops as the train passes by and moves away from the crossing. The frequency of the distant approaching whistle is 540 Hz; it drops to 470 Hz after ...

**physics**

Two pipes, equal in length, are each open at one end. Each has a fundamental frequency of 475 Hz at 297 K. In one pipe the air temperature is increased to 304 K. If the two pipes are sounded together, what beat frequency results?

**8th grade math**

1/3 for Seth. The ratio is 3:2:1

**spanish**

Can someone please proof-read what I have so far on my Spanish essay for finals? Here it is so far: Antes de ver al aeropuerto, es importante confirmer el vuelo. Haces la maleta con ropa para tus vacacion. Cuando llegas el areopuerto, recibes la tareta de embarque y ver a ...

**Economics**

The answer is D. It revolves around the family unit.

**General Chemistry I**

Never mind, I just found my error; I incorrectly converted between Torr and atm, I should've gotten 1.05 atm instead.

**General Chemistry I**

And according to this solution I have here the correct answer is b. 1,250 mL~

**General Chemistry I**

A sample of gas occupies a volume of 59.9 mL. As it expands, it does 126.2 J of work on its surroundings at a constant pressure of 798 torr. What is the final volume of the gas? a. 61.1 mL b. 1,250 mL c. 218 mL d. 1,490 mL e. None of the above I used the work function w = -P&#...

**General Chemistry I**

Thank you so much, this makes much more sense than what I was doing; I was dividing each amount by the number of moles of O, not Br, which explains why I was getting crazy numbers.

**General Chemistry I**

A sample of a compound containing only Br and O reacts with an excess of H2 to give 6.601 g of HBr and 3.919 g of H2O. What is the empirical formula of this compound? a. BrO b. BrO2 c. Br2O d. BrO3 e. None of the above I already know the answer is (e), but I am not entirely ...

**ap chemistry**

A calorimeter contains 20.0 of water at 12.5 . When 2.20 of (a substance with a molar mass of 59.0 ) is added, it dissolves via the reaction and the temperature of the solution increases to 27.5 . Calculate the enthalpy change, , for this reaction per mole of . Assume that the...

**Physics**

Use 5.98 × 10 24 kg as the mass of the Earth. A 2350 kg meteorite has a speed of 143 m/s just before colliding head-on with the Earth. Determine the recoil speed of the Earth. Answer in units of m/s

**Physics**

Note: Take East as the positive direction. A(n) 86 kg ﬁsherman jumps from a dock into a 131 kg rowboat at rest on the West side of the dock. If the velocity of the ﬁsherman is 5.2 m/s to the West as he leaves the dock, what is the ﬁnal velocity of the &#...

**physics**

A 67.3 kg ice skater moving to the right with a velocity of 2.52 m/s throws a 0.151 kg snowball to the right with a velocity of 33.7 m/s relative to the ground. What is the velocity of the ice skater after throwing the snowball? Disregard the friction between the skates and ...

**physics**

A 2.24 kg mass on a frictionless horizontal track is attached to the end of a horizontal spring whose force constant is 4.45 N/m. The mass is displaced 3.06 m to the right from its equilibrium position and then released, which initiates simple harmonic motion. How many times ...

**Physics**

A 83.5 kg astronaut is working on the engines of a spaceship that is drifting through space with a constant velocity. The astronaut turns away to look at Earth and several seconds later is 35.5 m behind the ship, at rest relative to the spaceship. The only way to return to the...

**Physics**

A baseball player uses a pitching machine to help him improve his batting average. He places the 43.4 kg machine on a frozen pond. The machine ﬁres a 0.0546 kg baseball horizontally at a speed of 44.8 m/s. What is the magnitude of the recoil velocity of the machine? ...

**Physics**

A solid metal ball and a hollow plastic ball of the same external radius are released from rest in a large vacuum chamber. When each has fallen 1 m, they both have the same 1. momentum. 2. inertia. 3. speed. 4. change in potential energy. 5. kinetic energy.

**Chemistry**

thanks!

**Chemistry**

Calculate delta H for this reaction: N2 + 3H2 --> 2NH3 I am given the bond dissociation energy for N-N (163 kJ/mol), H-H (436 kJ/mol), and N-H (391 kJ/mol) I can't seem to find a similar problem anywhere, they are all given 2 or 3 similar equations.

**physics HELP!**

The observed wave speed is 20.3 m/s when the suspended mass is m = 3.07 kg. What is the mass per unit length of the string? I keep calculating this out to be .5199 kg/m which i know is wrong! HELP!

**Into. Chemistry**

I'm trying to do this precipitation reaction problem, but I don't understand part of it. The question is: Does a precipitate form when aq. soultions of potassium nitrate (KNO3) and sodium iodide (NaI) are mixed? Then it lists the solutions for the two: KNO3(aq) --> ...

**Chemistry**

If saturated solution of barium chloride at 30 degree Celsius contains 150g water how much additional barium chloride can be dissolved by heating it to 60 degree Celsius? 30 degrees Celsius = 38.2 60 degrees Celsius = 46.6

**English**

In Romeo and Juliet, what is ironic about Lord Capulet's praise of Friar Lawrence in Act 4 Scene 2?

**us history**

Compara and contrast your modern immigrant to historical immigrants. Atleast 10 bullets on each section. (Historical Immigration, both, and Modern immigration)

**Physics**

Two different simple harmonic oscillators have the same natural frequency (f=5.60 Hz) when they are on the surface of the Earth. The first oscillator is a pendulum, the second is a vertical spring and mass. If both systems are moved to the surface of the moon (g=1.67 m/s2), ...

**Physics**

A 2.24 kg mass on a frictionless horizontal track is attached to the end of a horizontal spring whose force constant is 4.45 N/m. The mass is displaced 3.06 m to the right from its equilibrium position and then released, which initiates simple harmonic motion. What is the ...

**science**

A 2.24 kg mass on a frictionless horizontal track is attached to the end of a horizontal spring whose force constant is 4.45 N/m. The mass is displaced 3.06 m to the right from its equilibrium position and then released, which initiates simple harmonic motion. What is the ...

**physics**

A 53.6 kg circus performer bobs up and down at the end of a long elastic rope at a rate of once every 2.80 s. The elastic rope obeys Hooke's law. Find how much the rope is extended beyond its unloaded length when the performer hangs at rest. ** I think Im missing a step ...

**physics**

An archer pulls her bow string back 0.370 m by exerting a force that increases uniformly from zero to 225 N. What is the equivalent spring constant of the bow?

**math**

i don't know i asking you

**English**

What about this one. Seeing the old slides remind reminded me of the good times we had. The verbal is seeing and it is a gerund?

**English**

In the first sentence I think it is a noun but in the second sentence I think it is an adjective? Is that correct?

**English**

Baking is a major project for the holidays. Is the verbal baking? Is this a gerund or a participle and why? Baking in the oven, the bread smelled delicious. Is the verbal baking in the oven? Is this a gerund or a participle and why?

**Statistics**

All else equal will the confidence intervals for samples of size 80 be longer or shorter than those for sample of size 40?

**Math**

decide on a topic which is adding drinks to each purchase from the lunch for which they would like to collect data and design a survey for school which could really be used to convince the principal to do. Create 7 questions for the survey. My questions so far are: Would you ...

**Science**

Sorry the subject is science

**niches**

can animals be consumers and decomposers? or are they only separated?

**Spanish**

Is this wrong? Tienen que hacen las maletas. Salen para Monterrey mañana.

**math**

decide on a topic which is adding more clubs for which they would like to collect data and design a survey for school which could really be used to convince the principal to do. Create 5-7 questions for the survey. Some of my questions for the survey are: Do you want to add ...

**Math**

How long it will take for an investment of 2000 dollars to double in value if the interest rate is 9.5 percent per year, compounded continuously?

**Math**

decide on a topic which is adding more clubs for which they would like to collect data and design a survey for school which could really be used to convince the principal to do. Create 5-7 questions for the survey.

**Physical Chemistry**

"Liquids A and B, which have identical molar volumes, are mixed together in equal volumes to form a 75 mL mixture. The liquids are partially miscible and the mixture phase separates into an upper phase with a composition xA=0.45 and a lower phase with a composition xA=0....

**Math**

Will someone please assist me?

**physics help!**

When a gas follows path 123 on the PV diagram in a rectangle shape labeled 1234 cycle, 449 J of heat flows into the system and 179 J of work is done. What is the change in the internal energy of the system? * I keep coming up with 270 but this is incorrect. PLEASE HELP :)

**chemistry**

12.34%

**Chemistry**

Ag(NO3)+ CaClYields to AgCl + (NO3)Ca KI + Pb(NO3) yields to K(NO3)+ IPb What is the precipitate in both??

**math((PLEASE HELP!))**

5-3r=-37 r= ? x/8+10=13 x= ?

**7th grade math Ms. Sue please check**

#8 is 25%

**math((PLEASE HELP!))**

5-3r=-37 r= ? x/8+10=13 x= ?

**Math**

Is a bar graph better than a pictograph to display data? Explain.

**Physics**

A golf club strikes a 0.061-kg golf ball in order to launch it from the tee. For simplicity, assume that the average net force applied to the ball acts parallel to the ball’s motion, has a magnitude of 7760 N, and is in contact with the ball for a distance of 0.014 m. ...

**Physics**

The brakes of a truck cause it to slow down by applying a retarding force of 8740 N to the truck over a distance of 1130 m. What is the work done by this force on the truck?

**why you should not eat turkey for thanksgiving**

nearly 50 million turkeys are killed in order for this grand celebration to take place.Turkey is fattening and unhealthy and turkeys are put on antibiotics. BOOM THATS AN A RIGHT THERE!

**Algebra**

It says this site is homework help, why don't you evaluate it for her? She needs help!

**math**

emma has 364 cookes . chis has 8956432090 cookes .aaron has 14235 times as many cookes as chis and emma

**science**

3 is Commensalism 4 is none of the above. (~:

**fractions from least to greatest**

I don't now

**Physics Help!**

Find the total kinetic energy content of 1.55 moles of an ideal gas at temperature 435 K

**Physics Help!**

Gas is contained in an 8.45 liter vessel at a temperature of 19.8oC and a pressure of 8.70 atm. Determine the number of moles of gas in the vessel. Do not enter units.

**Physics Help!**

An automobile fuel tank is filled to the brim with 45.3 liters (12.1 gallon) of gasoline at 14.5 degrees C. Immediately afterward, the vehicle is parked in the Sun, where the temperature is 34.5 degrees C. How much gasoline (in Liter) overflows from the tank as a result of the...

**Physics Help!**

The New River Gorge bridge in West Virginia is a 514 m long steel arch. How much will its length change between temperature extremes -20.3 degrees C and 32.7 degrees C

**Math for Steve**

Made a 100%! Answers are 1: C 2: B 3: B 4: D 5: C (If you go to connections these are right)

**Math**

The answer is 30

**math**

Nathan sells pencils in boxes of 10 and 12. Roy bought x boxes of 12 pencils. (a) Write down an expression, in terms of x, for the number of pencils Roy bought

**physics**

A golfer launches a golf ball off a tee that has been raised 24.8 meters off the ground. If the golfer strikes the ball with a velocity of 26.5 m/s at an angle of 45.8 degrees, how far will the ball carry in the air before hitting the ground below?

**Physics**

A flatbed egg truck is in a drag race. The truck is carrying a 450 lb. crate of eggs in the back. The coefficients of friction between the crate and the truck bed are μs = 0.9 and μk = 0.4. What is the maximum acceleration the truck can have without the eggs sliding ...

**Math**

10h+6-5h+3= 5h+9

**PHYSICS**

When the speed booster is set up horizontally at the edge of a table (h=1.11 m) it sends a toy car of mass m=0.06kg in the projectile motion, so that it lands at horizontal distance of x1=1.36 m away from the edge of the table. When the sam car with the same speed booster are ...

**Physics**

The essential part of the Hot Wheels speed booster is made of two fast spinning, rubberized disks of radius r=0.048 m each. The toy car entering the booster is in direct contact with both wheels, which send it away after brief encounter with it. When the speed booster is set ...

**Physics**

A 58-kg vampire and 176-kg werewolf clash during the Feat of Strength part of the annual celebration of Festivus. The werewolf velocity just before the clash is 7 m/s and is directed upwards, while the vampire velocity at the moment of the collision is 12m/s and is directed ...

**language**

sorry sweetie i got nothin but u can check out a halloween word scramble website and try 2 find the answer sheet but good luck

**language**

ummm ourland???

**language**

can u please help me unscramble this halloween word....."ouracland"

**ap chemistry**

△H=bonds broken-bonds formed Broken Bonds: O-H=6(459kJ/mol) N-Br=3(X kJ/mol) ------------ Bonds Broken=2754kJ/mol + 3(X kJ/mol) Bonds Formed: O-H=3(459kJ/mol) O-Br=3(201kJ/mol) N-H=3(386 kJ/mol) ------------- Bonds Formed= 3138kJ/mol +81kJ/mol=[2754kJ/mol + 3(X kJ/mol...

**math((PLEASE HELP!))**

7+l/5=-4 (n/-3)-2=8

**math((PLEASE HELP!))**

I just need help on the first and last problems that are bugging me

**math((PLEASE HELP!))**

Thank you , I get it now.

**math((PLEASE HELP!))**

7+l/5=-4 46-3t=-23 6+a/4=8 6h+24=0 -5b-23=9 15-3e=-6 15w-4=41 6s+3=-27 14o-17=39 n/-3-2=8