# Posts by Kayla

Total # Posts: 1,619

**Physics 11**

Ok, that makes sense, thank you :)

**Physics 11**

As water waves from the ocean approach a shallow beach, their wavelengths become shorter. Explain why. v=fwavelength, frequency remains constant & velocity & wavelength decrease or increase w/ water depth. Is that a reasonable answer or are they looking for something else? ...

**Physics 11**

Ok excellent, thank you :)

**Physics 11**

The speed of water waves is 30cm/s in deep water & 15cm/s in shallow water. If the wavelength in deep water is 1.0cm, what is the wavelength in shallow water? (v2/v1)=(wavelength2/wavelength1) Therefore (15/30)=(wavelength2/1) - 15=30wavlength2 -Wavelength2=0.5cm/s A) Is that ...

**Physics 11**

Oh I get it!! Thank you very much :)

**Physics 11**

Waves travelling along a string have a wavelength of 2.4m. When the waves reach the fixed end of the string, they are reflected to produce a standing wave pattern. How far from the end are the first 2 antinodes? I know that each wavelength has 2 antinodes so each antinode has ...

**Physics 11**

Ok, I'm still a little bit confused. How do you know that it's half a wave length across? & in that case I'm saying .5 wavelength=L? & .25wavelength=each antinode? Thanks again :)

**Physics 11**

Waves traveling along a string have a wavelength of 2.4m. When the waves reach the fixed end of the string, they are reflected to produce a standing wave pattern. How far from the end are the first 2 antinodes? I feel like I don't have enough info here... I know that 1 ...

**Physics 11**

Thank you :)

**Physics 11**

A single wave pulse is sent along a thick rope that's tied to a thin rope, which in turn is attached to a wall. Reflection of the wave will occur at both points A (where the thick rope is attached to the thin rope) & point B (where the thin rope is attached to the wall) ...

**Physics 11**

Ok, thank you very much :)

**Physics 11**

I'm super confused about it because I asked my teacher how there could be 1 crest between a crest & trough she said "There's 1 crest between them so they are further apart" So I clarified that "that means there's 1 crest & 1 trough between? thanks&...

**Physics 11**

2 men are fishing from small boats located 36m apart. Waves pass through the water, & each man's boat bobs up & down 15 times in 75s. At a time when 1 boat is on a crest, the other 1 is in a trough, & there is 1 crest between the 2 boats. f=15/75=.2Hz Wavelength=36m V=f(...

**Physics 11**

V is constant bc electromagnetic waves are always V constant. How though can V be constant but there be more cycles occurring per second? Thanks again :)

**Physics 11**

You are creating waves in a rope by shaking your hand back & forth. W/out changing the distance your hand moves, you begin to shake it faster & faster. What happens to each of the following aspects of the wave? Amplitude remains the same as the distance shaken remained the ...

**Physics 11**

Thanks a ton!! :)

**Physics 11**

Thank you :) is c=300m/s a relatively constant value?

**Physics 11**

An FM radio station transmits radio signals that have a wavelength of 3.2m. Where would you have to adjust your tuner in order to pick up its music? Note: FM waves are measured in MHZ I have no idea where to go with this... Thank you :)

**Physics 11**

Oh... So essentially I'm saying 5-(-4) which is 5+4? that makes sense... Thank you :)

**Physics 11**

A student throws a .1kg ball at a wall. The ball hits the wall perpendicularly with a speed of 5m/s & then bounces back w/ a new speed of 4m/s. What impulse is given to the ball by the wall? I used deltaP= m deltaV so deltaP= .1*(-1) to get -.1N-s. I got it wrong! Can someone ...

**Physics 11**

A 1200Kg car travels at a constant speed of 26m/s for 5s up a 130m long hill. The total height of the hill is 27m & the friction force acting on the car is 2520N. What power was used by the car in traveling up the hill? I know that Fnet=o bc velocity is constant, therefore ...

**Physics 11**

Thank You!!! :)

**Physics 11**

If 2 vehicles are moving toward each other from opposite directions & are the same mass & velocity then momentum=0 correct? Because p=M1V1 - M1V1 Thanks!! :)

**Physics 11**

Ok, that's super helpful thank you very much!! :)

**Physics 11**

So does that mean if I have work against friction & acceleration I can use that one formula to cover both? :)

**Physics 11**

A 62kg cyclist changes the speed of a 12kg bicycle from 8.2m/s to 12.7m/s. Determine the work done. I've already answered & gotten this question correct, however it made me confused about the concept. I found Ek. & Ek to find change in Ek which was 3479.85. He did work ...

**Physics 11**

Ok, so then is it fair to say that when Fapp releases an object in the air or on a horizontal surface Fnet= the opposing force? Thanks :)

**Physics 11**

In the absence of air resistance, a ball of mass m is tossed upward to reach a height of 20m. Given that Fg=mg, what is the net force on the ball at the 10m position (half way up)? a)2mg b)mg c)mg/4 d)mg/2 I already got this wrong bc I had no idea how to solve. I have a ...

**Physics 11**

Ok I will do, thank you :)

**Physics 11**

Can someone explain what work total is? In my lessons it said Work total is the sum of all work & showed an example of different work being added together. An assignment after that however made me think that may not be the case... Do I need to add the work in some cases or is ...

**Physics 11**

What I understood was that Wtotal=the sum of all work, but is what I did maybe Wtotal?

**Physics 11**

A 62kg cyclist changes the speed of a 12kg bicycle from 8.2m/s to 12.7m/s. Determine the work done. I used change in energy = work to find work against inertia which was 3479.85 Then I used V^2=V.^2 + 2ad to get ad=47.025 I then used W=mad to get work against friction, my ...

**Physics 11**

A girl pushes her little brother on his sled w/ a force of 35N for 840s. How much work does she do if the force of friction I'd 27N? I subtracted the force of friction from the applied force to get my net force of 8N but I don't know where to go from there... Thank you :)

**Physics 11**

I don't think I have that formula... So mg(mu)d=Ek? making d=190.8 then I can use kinematics to get a & w=mad? :) thanks a ton :)

**Physics 11**

A 90kg basketball player carries about 720J of kinetic energy when running down the court. If the coefficient of kinetic friction between good runners & the floor is .600, how far does the player skid when trying to stop? Hint: what work was done by friction in bringing the ...

**Algerbra**

7.f(x)=2x^2-3x+1 13. f(x)=x^2-6x+1=0 *Solve for the zeros/roots of the following quadratic equations by using the quadratic formula* Any help please.....

**Physics 11**

Ok, I used m1V1 + m2V2=m1V'1 + m2V'2 to get .060kg(0) + 3.1kg(0) = .060kg(580m/s) + (3.1kg)V'2 0=34.8kg-m/s + 3.1kgV'2 -34.8=3.1V'2 -11.23m/s=V'2 Is that right? Thanks again :)

**Physics 11**

A rifle bullet of mass 60g leaves the muzzle of a rifle with a V=5.8*10^2m/s. If the rifle has a mass of 3.1 kg, with what V will it recoil? I'm at a total loss here because I feel like I don't have enough information... I just need to know what formulas to use with ...

**Social studies**

A C E

**Social studies **

Which are functions of money? Store value Producer of resources Unit of account Medium of exchange Record of finances Unit of output

**Social studies **

1. Which of these people is part of the labor force a.an eighth grader with a paper route b. a retired sales person c. a full time college student d.an auto mechanic•• 2. Which is the best example of frictional unemployment? A plumbers contract with an apartment ...

**Social studies **

Which is the most likely result of income not rising as quickly as inflation? People are able to buy goods and services The unemployment rate rises as more people look for job•• Many people decide to leave the labor force Consumers buy more goods before inflation ...

**Social studies **

Which is a likely effect of this change in tax policy? High income people will choose to leave the state•• Non profits will become a large part of the economy•• Consumers in the state will choose to buy fewer things Financial institutions will be less ...

**Sociales studies**

Wait it's A ... to answer your question public services is service provided by government to people living within its jurisdiction

**Sociales studies**

D??

**Sociales studies **

The citizens of a small city have been eager to see more green space in their environment there are several abandoned lots that activists think could be turned into community gardens or parks for people to freely enjoy. 1. For the additional green space to be considered public...

**Social studies**

2 A is that correct

**Social studies **

What is one of the things the federales reserve system does? Set income tax rate at the federal level Influence interest rates•• Decided who can open bank account Give loans to bank customers How might the government deal with a huge company that has no competitors ...

**Social studies 7**

Which job would likely have the lowest income? A job that many people are welling to do•• A job that takes highly specialized skills A job that requires a college diploma A job that requisa lot of travel

**Social studies**

Thanks for checking my answers

**Social studies **

Which of these factors contribute to the income potential of a job? a. the education required to be successful at a job•• b. the amount of income a person wants to make at a job c. the special skills needed to do a job well•• d. the enjoyment a person finds...

**Physics**

A 15kg box is given an initial push so that it slides across the floor & comes to a stop. I the coefficient of friction is .30, a) find Ffr- Fg=mg - Fg=15kg(9.8N/kg)=147N Ffr=mu(Fn) - Ffr=.30(147N)=44.1 b) Find the acceleration of the box. Hint: what is the net force as the ...

**Physics**

A 15 kg box is given an initial push so that it slides across the floor & comes to a stop. If the coefficient of friction is .30, A) Find the Ffr Fg=mg=Fg=15(9.8)=147N Ffr=mu(Fn)- Ffr=.3*147N=44.1N B)Find the acceleration. Hint: what is the net force as the box slides to a ...

**Algebra **

a basketball player scored 17 timea during one game. He scored a total of 21 pts,two for each two-pt shot and one for each free throw. How many two-pt shots did he make? How many free throws?

**Math**

the length of a rectangular window is 6 feet more than its width, w. the area of the window is 100 square feet. which equation could be used to find the dimensions of the window?

**6th gr. math**

c=s The variable s represents number of additional necklaces and the variable c repres. total # of diamond neck.If louie has 3 neck. in his hand how many are diamond necklaces? please help me solve

**Math**

Find the exact values for the lengths of the labeled segments a, b and p drawn in green, red, and blue, respectively. Note that r=3 is the radius of the circle, and s=2 is the arc length from the point (3,0) around the circle to the indicated point. (So imagine a triangle ...

**Math**

For each of the following, fill in the blank to create a perfect-square trinomial: (a) x2 ?6x+ ____ y2 +7y+ __

**math**

Indicate if there are 0, 1, or 2 triangles with these data. 1) A=30?,b=10,a=12: 2) A=30?,b=10,a=3

**Philosophy check my answers**

determiine the following passages with the fallacy committed. 1. The world was either created in chaos or by God. There's evidence of order in the world so God must exist. 2. The government has no right to force me to pay the new tax. They have the right to govern over ...

**world History **

How did the french citizens who witnessed the king louis execution react

**world History**

How did XVI respond as he faced execution

**Math**

-3 + n/2 = 9

**Social studies**

acually teacher no they are not there are some on here that are really hard to answer so dont be rude or a b*tch because news flash no ones perfect it is really hard to do somethings so thank you very much and go read a text book or something

**algebra **

A ball is dropped from a height of 30 feet and allowed to bounce until it comes to arrest each time the ball bounces it rebounds to 3/5 of its previous high after which bounce is the boss hi 10.8 feet. I understand the height gets shorter but is there a equation to solving ...

**Chemistry**

A 0.446-gram sample of iron ore is dissolved in HCl and the iron (Fe solid) is reduced to Fe2+. The solution is then titrated by 38.6mL of 0.105 N KMn)4. Calculate the percentage of Fe in the iron ore sample.

**6th grade Math**

two more than seven times Lynn's age

**Math Geometry**

thanks, Math geometry- person I got a 100%

**Math**

Divide 294 metres of cloth into three lengths in the ratio 2:3:9. How many metres will the longest piece measure?

**Math**

0.00805555

**Trigonometry**

Determine the circumference of a circle with 7.4 centimeter radius. (Use 3.14 ) Im not trying to get this completely answered. I just need help with what to do first. Thank you so much.

**History**

is it because your not in conections academy

**Algebra**

A right triangle has an area of 24 ft^2 the demesions of the triangle are increased by a scale factor of 6 what is the area of the new triangle

**Chemistry**

Calculate the total pressure above 1.0L solution of a 1.42M CH3OH(aq) solution at 25 degrees(C). The vapor pressure of pure methanol at 25 degrees (C) is 127.1 torr and the vapor pressure of the pure water is 23.8 torr at 25 degrees(C. You may assume that the density of the ...

**Chemistry**

What is the vapor pressure of a solution prepares by dissolving 4.25g of K2O in enough water to preapare 1.25L of Solution at 25 degrees (C)? Assume that the density of the solution is 1.00 g/mL and that the vapor pressure of pure water is 23.8 torr at 25 degrees (C). I've...

**Math**

Compare partial products and regrouping. Describe how the methods are alike and different

**Math**

Tim has read 60% of a book. He has 24 more pages to finish. How many pages are there in the book?

**Science**

A boy pushes a box of mass 57 kg and it moves with an acceleration of 11.4 m/s2. what amount of force is the boy exerting on the box?

**Physics**

During an adiabatic process, the temperature of 6.50 moles of a monatomic ideal gas drops from 525 °C to 169 °C. What is the work done? Here is my work, is it correct? T1 = 525+273 = 798 K T2 = 169 + 273 = 442 K work done = R[T2-T1]/1-gamma = 8.314[525 - 798]/(1-1.67...

**English**

i have but i dont think my interpretation of the story is correct, i must prepare a speech about this story and I dont want to be inncorect since my proffesor said to ask others

**English**

has anyone read the short story "the new veterans" and can give me like a summary of what happened in the story? i already tried looking online but couldn't find a complete summary? i just need to know mainly the plot? it would be much help

**Physics**

A Carnot engine of efficiency 41% operates with a cold reservoir at 24 °C and exhausts 1290 J of heat each cycle. What is the entropy change for the hot reservoir? Answer in J/K. I keep getting the answer incorrect. Here is the work: Efficiency = 100*(Th- Tc)/Th 41 = 100*(...

**Social studies**

*much

**Social studies**

Okay thanks so mucho for checking my answers:)

**Social studies**

Which of the following did Ralph Waldo Emerson stress the importance of in his writings? The individual •• The family Agriculture Industry

**Social studies**

The last one

**Social studies**

Nevermain I meant to say is it the first one?

**Social studies**

Wait is it The last one???

**Social studies**

Which of the following is a key idea of transcendentalismo? Belief in human reason Belief in personal insights Belief in expansion of the country •• Belief in isolation from other nations

**American Government**

Is it dual federalism?

**Math**

How many 1/3 are there in 25/5

**Phisics**

Determine the power of a motor of a 1200 kg car that changes its speed from 10 m / s to 16 m / s in 3 seconds. Express the result in horsepower and consider null friction.

**Physics**

A quartz sphere is 14.0 cm in diameter. What will be its change in volume if its temperature is increased by 305 °F? (the coefficient of volume expansion of quartz is (1.50 × 10^-6) °C-1) Answer in cm^3 I tried this twice and got 0.657 cm^3 and 0.18cm^3 but they ...

**Physics**

a box sliding on a horizontal surface with a speed of 6m/s encounters an incline plane that makes a 15 degree angle with the horizontal line. What is the max distance that will be travelled by the box up the incline before coming to rest if the coefficient of kinetic friction ...

**Physics**

A car is traveling at 7.0 m/s when the driver applies the brakes. The car moves 1.5 m before it comes to a complete stop. If the car had been moving at 14 m/s, how far would it have continued to move after the brakes were applied? Assume the braking force in both cases is ...

**Chemistry**

Consider the neutralization reaction that takes place when hydrochloric acid reacts with aqueous calcium hydroxide Write a complete balanced equation for this reaction

**Physics**

A raft is made of 15 logs lashed together. Each is 30.0 cm in diameter and has a length of 7.00 m. How many people (whole number) can the raft hold before they start getting their feet wet, assuming the average person has a mass of 66.0 kg? Do not neglect the weight of the ...

**Math**

Write a polynomial of the lowest degree with real coefficients and with zeros 6-3i (multiplicity 1) and 0 ( multiplicity 5)

**English**

Write a sequence of events of story welcome to dead house by r.l stine

**Maths**

The right answer the answer is 12.