# physics please HELP !

127,101 results, page 90

### Math help please

1.) 4(2-a)^2-81 2.) -(x-y)^3 3.)3x^2-27(2-x)^2 4.) 9(y-1)^2-25

### Math (please help)

n/3-8=-2 what is n?

### math

Please help me with these 1. -5/c = 1/3 2. k/8 = -2/5 3. 6/z = -3/5 Thank you

### algebra

can you please help me with these 1. -5/c = 1/3 2. k/8 = -2/5 3. 6/z = -3/5

### ALGEBRA-Help please

(2g-3)(2g^2 + g - 4) IS IT 2g^3 - 4g^2 + 12

### MATH

Please help me with these: 1. 5/8 + 5/6 = 2. 2 3/5 + 4 4/5 = 3. 13 1/2 + 7 2/3 = 4. 3/8 - 3/8 = Thanks!

### MATH

Please help me with these: 1. 5/8 + 5/6 = 2. 2 3/5 + 4 4/5 = 3. 13 1/2 + 7 2/3 = 4. 3/8 - 3/8 = Thanks!

### please help! solve for x

2^x+3=5^3x-1 thanks!

### MATH HELP PLEASE

3p-1 = 5(p-1) - 2(7-2p)

### math

can you help me with this please -19-12+2-(-21)+11-(-5)

### math

x is 1,2,3 y is 1,2,5, please help

### math

can u please help me 7r-(6r-5)= 7 thank u

### math((PLEASE HELP!))

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

### math((PLEASE HELP!))

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

### math((PLEASE HELP!))

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

### math

can you please help me 8+7r^3/2t^4r

### mah

9x^0 (6x)^0 3x^-4+8 when x=2 please help me

### math

Please, help me! 5/(x^2 - 4) + 2/(x^2 - 4x - 3) - 3/(x^2 - x - 6)

### math please help!!

2x^2-4X-3=6

### Mathematics

2(x+4) = 7 -(3+x) Please help

### Math Help please

5x+9=3x+37 x=

### Algebra 2

„ x+2„ =3x+1 Please help

### Algebra 2

„ 3x+1„ =2x+6 Help please.

### please help with math

12+52-9÷3

### Math - Please help

1/3x + 1/8x + 1/4x + 1/5x + 10 + 1 = x

### maths

please help

### algegra

can anyone help me on this? please (2x)^3 + 2^3x

### HELP WITH MATH PLEASE!!!!!!!!!!

What does 1/2 x 2 x 6 = ?

### math

2 3/5 - 1 5/6 = ? 10 2/9 - 5 3/7 = ? 2 3/5 - 1 1/4 = ? Please help me.

### Please Help!!!! Maths

X^2-6X+1=(3X+5)/2

### Math

Please help if you will! (-5)x7-6+8 A. -49 B. -45 C. -33 D. -25 P.s. Thanks for the help!

### Algebra 1

y^3(2y-6)+7y^4 PLEASE HELP!!

### Math

Help please!!! 4x-9=-5x-99???

### Algebra1 HELP PLEASE

(x + 4)(x - 3) = -10?

### Algebra

x-2/3 + x-3/2 Please help. Thank you

### Math

Please help! 1) -6 + 5(-5 - 3m) 2) -3 + 4(x + 2) 3) 3(1 + 5n) - 6n 4) -6b - 6(3 -4b) 5) -6x + (1-3x) x 8 6) (r - 1) x -3 - 3 7) (n - 4) x -7 + 7 8) -4(6 + 4v) + 7 Thanks.

### Algebra

Please help! 1) -6x(1-4x) + 5(3x-8) 2) 8(-4+7n) + 6n(2n-7) 3)4(3v+1) - 8v(1-8v) 4)4x(7+5x) - 8(-x - 7)

### math help please

4 2/5x=12 1/10 A. 7 7/10 B.2 3/4 c.2 1/2 D.4/11

### MATH

HELP PLEASE (ã6+ã2) (ã6-ã2)

### Algebra

6/z-3=8/5 help please.

### Please help

integral (t^3=6t^2+4)dt from 0 to x f''(x)=?

### Math please help

4(x-3)=5(x+1)

### Math

5x^4=5x Can you please help

### ALgebra 2

Please help!!!!! - 1/2 - 3/4 =

### Help please Math

is a(bc)= ( ab) (ac)

### Ap calc

If y= e^x - e^-x / e^x + e^-x , then y'= Please help

### math

(10^2t)-2(10^t)+1=0 let 10^t=y please help

### math

Please help! (X+y)^3+(x-y)^3

### math

e+7=15 22 8<--- 7+8=15 -8 -22 r+18=26 8<--- 18+8=26 6 44 54 a-6=19 25 13<--- 6-13=19 -13 -25 b-3=4 7<--- 3-7=4 1 -1 -7 let me know please

### MaTH

1. -1/2 + 1/3 2. -3 1/5 + (-6 1/2) 3. 5/8 - (-2/8) 4. -9/10 - 2/5 5. 6 3/5 - (2 1/5) Please help thanks

### Math

–14 – ( –16 ) = ? Please help. Thank you!

### math help!!

Please help 25= 2r+3 A 28=2r B 22=2r C 50= r + 3 D 25/2=r3

### Please Help

What is the range of 4(X-5)^2 + 7

### math

Can you please help me. 3/x-1=8

### Algebra

Please help!! x^2+y^2+6y+5=0 x^2+y^2-2x-8=0

### math

Please help 4(2^-3)(1^-2)

### PLEASE HELP AND HURRY

If M 3 = 42°, what is m

### Math

Help Me With This Please.! 1.7 and , 2.4 + 1.27

### Physics(Stress&Strain)

What is the factor of safety of a steel hanger having an ultimate strength of 630.000MPa and supporting a load of 65000.000N. The steel hanger in question has a cross sectional area of 5.300cm. ANS = (Round to 3 decimal places) Load = 65000.000N ultimate strength = 630.000MPa...

### Physics (Stress & Strain)

What is the factor of safety of a steel hanger having an ultimate strength of 630.000MPa and supporting a load of 65000.000N. The steel hanger in question has a cross sectional area of 5.300cm. ANS = (Round to 3 decimal places) Load = 65000.000N ultimate strength = 630.000MPa...

### Chemistry please help

Elemental mercury was first discovered when a mercury oxide was decomposed with heat, forming mercury metal and oxygen gas. When a 0.204-g sample of the mercury oxide is heated, 0.189 g of mercury metal remains. a)what is mole ratio of mercury to oxygen in the sample? would it...

### physics

what is the answer to the following 2 physics equations: a=(v, little f in right bottom corner -v little 0 in bottom right corner /t. I need it simplified to what t is and T^- 2n into the square root of L/g I need the equation simplified to get g

### physics

please check these for me: What is the wavelength of microwaves of 3.0*10^9 Hz frequency? a. 0.050m b. 0.060m c. 0.10 m d. 0.20 m C If a light ray strikes a flat mirror at an angle of 30deg from the normal, the ray will be reflected at an angle of a. 30deg from the mirror's ...

### Physics

Consider three identical metal spheres, A, B, and C. Sphere A carries a charge of -8q. Sphere B carries a charge of +7q. Sphere C carries no net charge. Spheres A and B are touched together and then separated. Sphere C is then touched to sphere A and separated from it. Lastly...

### US HISTORY - Help please

Which answer best explains how the Articles of Confederation addressed the question of creating a court system? The Articles established the trial-by-jury system for the first time in history. The Articles created state, regional, and national courts throughout the land.*** ...

### Functions

consider the functions g(x)=(4-x^2)^0.5 and h(x)=(x^2)-5. find the composite functions hog(x) and goh(x), if they exist, and state the domain and range of the composite functions. ------------------------------ ok, i have figured out that hog(x)=-1-X^2, but in my answer ...

### essay check please

This is the introduction of my essay , please check it !!!!!!!!!!!! It would really help “All men are born equally free”-Salmon P. Chase. A very important character that shapes our society is equality, but many people don’t believe in it. Racism and discrimination are ...

### Spanish B

What is one of the main factors attributed to Panama's booming economy? A)The control of Los Estados Unidos over the Panama Canal. B)Panama's sole control over the Panama Canal. C)France's abandonment of the Panama Canal project. D)Joint control of the Panama Canal and Los ...

### Vector Calculus

Can someone help me with this please. A vector field in cylindrical polar co-ordinates is given by V = R Rˆ + R 3 s i n ( φ ) c o s ( φ ) φˆ + 3 z kˆ where Rˆ, φˆ, kˆ are the appropriate unit vectors. Translate this vector field into the Cartesian x, y, z co-ordinate...

### Physics- Someone Please Help!!!

A luggage carousel at an airport has the form of a section of a large cone, steadily rotating about its vertical axis. Its metallic surface slopes downward toward the outside, making an angle of 21.0° with the horizontal. A 37.0 kg piece of luggage is placed on the carousel, ...

### Physics- Someone Please Help!!!

A luggage carousel at an airport has the form of a section of a large cone, steadily rotating about its vertical axis. Its metallic surface slopes downward toward the outside, making an angle of 21.0° with the horizontal. A 37.0 kg piece of luggage is placed on the carousel, ...

### Physics- Can someone please help me!!!

A luggage carousel at an airport has the form of a section of a large cone, steadily rotating about its vertical axis. Its metallic surface slopes downward toward the outside, making an angle of 21.0° with the horizontal. A 37.0 kg piece of luggage is placed on the carousel, ...

### Physics- Elena please help!

A luggage carousel at an airport has the form of a section of a large cone, steadily rotating about its vertical axis. Its metallic surface slopes downward toward the outside, making an angle of 21.0° with the horizontal. A 37.0 kg piece of luggage is placed on the carousel, ...

### maths

Two cyclists start biking from a trail's start 3 hours apart. The second cyclist travels at 10 miles per hour and starts 3 hours after the first cyclist who is traveling at 6 miles per hour. How much time will pass before the second cyclist catches up with the first from the ...

### Physics

A pilot of mass 65 kg in a jet aircraft makes a complete vertical circle in mid-air. The vertical circle has a radius of 1.70 km at a constant speed of 215 m/s. Determine the force of the seat on the pilot at (a) the bottom of the loop and (b) the top of the loop. (Note that ...

### Physics

A pilot of mass 65 kg in a jet aircraft makes a complete vertical circle in mid-air. The vertical circle has a radius of 1.70 km at a constant speed of 215 m/s. Determine the force of the seat on the pilot at (a) the bottom of the loop and (b) the top of the loop. (Note that ...

### Statistics

I am doing a stats study and im stuck on what test to perform. Please look at my subject and advise me.. I am testing to see whether a person that is best in math and science will be able remember more numbers than letters and if a person that is better in language and history...

### Physics

Consider the following four possibilities for two point charges and choose the one(s) that do not change the magnitude of the electrostatic force that each charge exerts on the other: A. Double the magnitude of each charge and double the separation between them. B. Double the ...

### please help :)

Even though I know what random selection, directional selection, stabilizing selection, disruptive selection and sexual selection are I can not understant what does Starlings producing five eggs in each clutch has to do with it. In my final I got this question and I don't know...

### science(answer please)

please answer these 1.what similarities do nuclear energy and chemical energy share?pick all that apply A.both are types of kinetic energy. B.both are types of potential energy C.both involve magnetic energy D.both involve stored energy 3.the energy an object has due to its ...

### Physics momentum: please check my answers

I didn't get a legitimate answer to this question before, so I'm posting it again. I have a big online test and would really appreciate if you could please check my answers before I submit them (I only have 1 try) Two equivalent masses are attached by a rope that hangs over a ...

### Quadratic Relations, Algebra, Math

URGENT!! PLEASE HELP In a volleyball match. Jenny serves the volleyball at 14m/s, from a height of 2.5m above the court. The height o the ball in flight can be estimated using the equation h=-4.9t^2+14t+2.5, where h is the height, in meters, and t is the time, in seconds, ...

### AP Physics

You go to kitchen to boil water. You pour 280 gram of water to a container, and put the container on a 293 W electric heater. Assume that all the heat from the heater is used to heat the water. The specific heat of water is 4.19 J/g ° C. As always, be accurate to 4 ...

### Physics (Help Please)

An astronaut of mass 84.0 kg is taking a space walk to work on the International Space Station. Because of a malfunction with the booster rockets on his spacesuit, he finds himself drifting away from the station with a constant speed of 0.570 m/s. With the booster rockets no ...

### MATH!

PLEASE HELP! Okay I'm DESPERATE. Can somebody please tell me what n^3-64 divided by n-4 is? And for x/x+2 - 4/x-2 - 1 is the answer 2(-3x+2)/(x-2)(x+2 n^3-64 is a difference of cubes: you should have an equation to factor it. http://www.purplemath.com/modules/specfact2.htm No...

### Early Child Ed.

Would you check these questions and my answers,please? 1. Stories such as "The Three Little Pigs,""The Billy Goats Gruff," or Dr. Seuss books,promote children's cognitive and linguistic skills through the _____________ strategy. A. repetition B. eventcasts C. referential ...

### chemistry HELP PLEASE !

A solution consisting of isobutyl bromide and isobutyl chloride is found to have a refractive index of 1.3931 at 20oC. The refractive indices at 20oC of isobutyl bromide and isobutyl chloride are 1.4368 and 1.3785, respectively. Determine the molar composition (in percent) of ...

### physics

1. You are planning to build a mini hydro power plant. A river near your home is w = 4.0 m wide and h = 1.0 m deep. You measure the water flow to be v = 1.50 m/s over the brink of a waterfall H = 10.0 m high. The company that makes the turbine advertises e = 25% efficiency in ...

### Simplify

Simplify the following number. ∛729 I think it is ∛9, but I do not know. Please help, and check my answer. I will appreciate it if you guys can answer this as soon as possible. It is part of a RATIONAL EXPONENTS question. The original equation was 9^(1/3)∙&#...

### Physics

A sanding disk with rotational inertia 1.1 x 10^-3 kg*m^2 is attached to an electric drill whose motor delivers a torque of 6 Nm about the central axis of the disk. What are the following values about the central axis at the instant the torque has been applied for 185 ...

### Writeacher

Writeacher, Do you specialize in any particular subject? I've seen you answer to math, english, physics, etc. I'm just curious. I don't believe I've answered to any physics questions -- poor student to depend on me for that!! Mostly I respond to English questions (grammar, ...

### physics

I do not understand the answer that was given to me on a post dated Nov. 23. Please help explain my questions that appear at the end of this post. Bart ------------------- Posted by Bart on Wednesday, November 23, 2011 at 6:52am. A baseball is hit with a speed of 27 meters per...

### Geometry help

Points EC bisects points AD at C. For each of the following, find the value of 'x' and the measure of the indicated segment. Please correct me if I'm wrong! 1. AC= 3x+6 and CD=2x+14 x=_______ AC=______ Answer: x=8 AC= 30 2. AC= 5x-8 and CD=16-3x x=______ AD=_____ Answer: x=3 ...

### Physics...help please!

A body of mass m moves in the +x direction, subject only to drag force: Fx= (-1/2)(CD*rhoair*S*vx^2) With drag coefficient CD, air density rho air, cross sectional area S, and velocity component vx. At time t=0 the body is at postion x=0 and has velocity of vx=v0 where v0 is ...

### Physics...help please!

A body of mass m moves in the +x direction, subject only to drag force: Fx= (-1/2)(CD*rhoair*S*vx^2) With drag coefficient CD, air density rho air, cross sectional area S, and velocity component vx. At time t=0 the body is at postion x=0 and has velocity of vx=v0 where v0 is ...

### poetry, please comment

The Abuse Ends Now by: Kathy A I wasn't enough So he became rough I'm just not that tough As he was handcuffed I saw his face I hoped he knew he was a disgrace After all this time of looking into those deceiving blue eyes I just sit and cry Because of every single lie The last...

### Some Please Help me - PreCalc

Verify that the point ( square root(31)/7, -3square root(2)/7 ) lies on the graph of the unit circle. If it does, use symmetry to find three other points that also lie on the graph of the unit circle. (direction - Type ordered pairs). PS: The -3 is outside the square root ( ...

### English Please Help

Please I need some help. I'm struggling really bad with my paper for english. Paper is on "War as a social disease". We cant use no physical characteristics or traits. Or use the word people or children. How does fear relate to war as a social disease? We can't use no examples...

### physics

a sea saw consist of a uniform bar 4m long and of mass 2kg. a boy of weight 42N sits at end of the sea saw while another boy of weight 38N sits at the end of the season. at what point must the season be pivoted if it is to balance. according to physics