# Math/Physics

214,834 results, page 95

1. ### physics

Two point charges of magnitude +3.0 nC and +2.0 nC respectively are placed 2.0cm apart. Calculate the resultant electric field strength at their midpont E= E1 + E2
2. ### physics

a cylindrical vessel of length 1 m and area 1mmsq is filled with water and rotated with an angular speed of w= 20pi find the rise in temp
3. ### Physics

Your electric jug element produces 1.5kW of power. What is the minimum time it will take to heat 1.5L of water from 20 degrees Celcius to boiling
4. ### AEJC , physics

a flywheel of mass 200 kg is rotating at the rate of 8 rps . find the constant torque required to stop the disc in 11 rotations.
5. ### Physics

A man walks 50 m,East, 30 m, South, 20 m,West and 10 m, North. Determine the displacement from the starting point. Find the distance traveled in FPS
6. ### Physics

A bullet fired target loses half of it velocity in penetrating 15cm .how much further it will penetrate before coming to rest
7. ### Physics

The Sound of Tissue is 1550m/s. What frequency ultrasound wave should you use to make sure you probe 65mm into the body?
8. ### Physics

A metal disc of radius R rotates with angular velocity Omega (w) In a uniform magnetic field. Calculate the induced emf develop.
9. ### Physics

Calculate the length of a displaced pendulum Bob which pass through its lowest point twice every second. Take g=10m/s²
10. ### Physics

How fast (in rpm) must a centrifuge rotate if a particle 69-cm from the axis of rotation is to experience an acceleration of 200438 g's? (can you show me how you get the answer) be thorough
11. ### Physics

George drops a stone from atop a cliff of 25m. How long does it take to hit the ocean below, what velocity is it travelling when it gets there?
12. ### physics

Consider a particle initially moving with a velocity of 5m/s starts deaccelarating at a constant rate of 2m/s*2 find the distance travelled in 2sec? Ans:2m
13. ### physics

an object 5cm lenght is placed at distance of 20cm in front of a convex mirror of radius of curvature 30 cm . find the position of the image
14. ### Physics

A weightlifter raises a 200 kg barbell over his head from the floor a displacement of 2m in 2.2 seconds. What is the average power he develops during the lift?
15. ### Physics

A train, with an initial velocity of 35ms^-1 along a straight track, deccelerates at a constant 0.25ms^2. Determine how far it travels in 2 minutes.
16. ### Physics

Can measuring the time between seeing the lightning and hearing the thunder really tell you how far away the lighting struck? If so, then how does it work?
17. ### physics

calculate the impulse imparted to the object in the following collision: a 0.5 kg hockey puck moving a5 35 m/s hits a straw bale, stopping in 1 second.
18. ### physics

Determine the x and y components of the following three vectors in the xy plane. 1) A 19-m/s velocity vector that makes an angle of 40° counterclockwise from the -x direction. x: 2) y: Explain please!
19. ### physics

Find the acceleration of the two blocks sliding down the incline in the figure below. (Take m1 = 1.1 kg and m2 = 1.8 kg. Indicate the direction with the sign of your answer
20. ### Physics

A 3,000 kg truck is traveling 28 m/s through a rainstorm. At the end of its journey, it has collected 500 kg of water and is now moving 24 m/s. Was momentum conserved?
21. ### General Physics 2

three charges, +2.5×10^-6, -4.8×10^-6, and -6.3×10^-6, are located at (-20m,0.15m), (0.50m,-0.35m), and (-0.42m,-0.32m) respectively. What is the electric field at the origin?
22. ### physics

How long will it take a 1879W motor to lift a 309kg piano to a window 15.4m above? what is the equation? here are my givens P= 1879 w m= 309 kg h= 15.4 m t= ? s
23. ### statistics

Lilly collects data on a sample of 40 high school students to evaluate whether the proportion of female high school students who take advanced math courses in high school varies depending upon whether they have been raised primarily by their father or by both their mother and ...
24. ### math mental math

shelley spent 17 min washing the dishes. she spent 38 min cleaning her room. explain how you can use mental math to find how long shelley spent on the two tasks?
25. ### Math

Homework grades are 5% of the overall grade. Lab work is 15% of the overall grade. Tests are 60% of the overall grade. The Final is 20% of the overall grade. Could a student that has a 75 homework average, 80 lab average, 40 test average, and 50 on the final pass the course? ...

why do kids have to read math and reading thare should be less homework less reading and less math
27. ### statistics

Lilly collects data on a sample of 40 high school students to evaluate whether the proportion of female high school students who take advanced math courses in high school varies depending upon whether they have been raised primarily by their father or by both their mother and ...
28. ### math

tell how you did it thank you Write an equation using n and t. The total bill (t) was twenty times the number of people (n). t = 20n ? "was", "is", "will be" translates into math as "="
29. ### math

have a question in math (( distance between two points )) show that C(-5,-1)is the midpoint of the line segment joining A(-2,5) and B(-8,-7) please in detales .. thank u
30. ### math

have a question in math (( distance between two points )) show that C(-5,-1)is the midpoint of the line segment joining A(-2,5) and B(-8,-7) please in detales .. thank u
31. ### math

i am having trouble iwth the following math problem: lim x->oo -x/squre root 4+xsquare I am not sure if i multiple the denominator with the numerator?
32. ### arithmetic

Well I am really bad at math mostly multiplication and division.When I start to think that i am getting math my teacher teachs something new what do i do.
33. ### Math

I'm trying to decide what math course to take next year. How do Statistics and Trigonometry compare in difficulty? Which is more helpful for the SAT's? THank you for your explanations.
34. ### math

I am already weak at math, but when they throw in letters it throws me off and confuses me more... can someone please show me how to work this problem? Ax+Hy=L,for x.
35. ### math gr 9

hi can someone please post a website where I can do free grade 9 math exam practice.. i have already tried proprof but they are full...
36. ### math

i just started this semester of math and i don't remember that if your adding mixed fractions are you supposed to chage it into an improper fraction to add it?
37. ### math

Page 114 of pizzazz math has got me clueless. None of the problems make since and my homewrok is due tomorrow. Please help me!!!!
38. ### Math

A ball has a radius of 56mm a)Calculate the surface area b)what is the volume of the sphere could somebody please answer for my math homework I need help
39. ### Math

Writing in math Braden and bialy each bought a kazoo for \$0.89.they each paid with a \$1.00 bill. Explain two different ways to show their change.
40. ### Math 10-3

the work i got from my math teacher says Determine the surface area of each right rectangular prism to the nearest square unit. Any Help with that?....
41. ### Math 112

Can you use the numbers 1 - 9, along with any math symbols and operations, to arrive at the answer of 100 when the 6 and 9 have a negative sign in front of them?
42. ### math

grandma trying to help my grandson in 5th grade math...question/"explain how knowing that 5 divided 8=0.625 helps you write the decimal for 4 5/8?
43. ### math

Integrated Math 1. The Overland Trail: Traveling at a constant Rate. Who will make it? Need help graphing 3 sets of data on one graph?
44. ### Math

Please help with math question below: Express the triple angle formula of tangent (i.e. tan〖(3x)〗) in terms of tanx.
45. ### Math

Help plz I got a new Math problem that said this " Which letter has two obtuce angles? " ( My sis is " smartybrat" ) if you can answer it go by "Maddy .H."
46. ### Math

Hello everyone! I'm a 10th grader and I scored a 3331 on my math scantron performance series test.... is this good, average or bad? Thanks! -a
47. ### math

If it takes 1/4 an hour to type one page, how many pages can be typed in 3 1/2 hours? The answer is 14, right? But what is the written math equation to solve this?
48. ### math

I just finished doing my math study guide for a test and there is one question that I don't know how to do. It is: f(x)=5-2x and g(x)=x^2=7x, find each value. a. g(3) b. f(2)+g(-1) c g(2x) I do not understand this at all, could someone explain this to me? Thank you.
49. ### Math

Which of the following could be a coterminal angle for -5pi/4? 19pi/4 7pi/4 -17pi/4 -25pi/4 I've done my math twice, but I can't seem to get the right answer:( pls help?

I lost my paper for the Math Riddle Pizazz page 167 about solving systems of equations and I no longer have the problems. (It is the "did you hear about the farmer who fed his cows birdseed.." page) What are the math problems for it?!?
51. ### Science, Physics, math, calculus

You would like to shoot an orange out of a tree with your bow and arrow. The orange is hanging 5.00 m above the ground. You fire the arrow at 35.0 m/s oriented 30.0° above the horizontal from a height of 1.30 m while standing 47.0 m away on your first try. You may neglect air...
52. ### Mech. Engr./Dynamics/Physics/Math

A ball is dropped with a velocity v0 and an angle alpha with the vertical onto the top step of a flight of stairs consisting of 10 steps. The ball rebounds and bounces down the steps where the coefficient of restitution between ball and step is e=0.6. The friction between ball...
53. ### Mech. Engr./Dynamics/Physics/Math

A ball is dropped with a velocity v0 and an angle alpha with the vertical onto the top step of a flight of stairs consisting of 10 steps. The ball rebounds and bounces down the steps where the coefficient of restitution between ball and step is e=0.6. The friction between ball...
54. ### Math--time

how do u add and subtract time.... ex. Math class is dismissed at 2:20pm ,It is now 1:53pm how many more minutes before math class is dismissed. It is a subtraction, but remember each hour is 60 min. 2:20 - 1:53 but you cant subtract 53 from 20, so you borrow.. 1:80 -1:53 and ...
55. ### Physics

Two forces, F1 and F2, act on the 5.00 kg block shown in the drawing. The magnitudes of the forces are F1 = 69.0 N and F2 = 24.5 N. What is the horizontal acceleration (magnitude and direction) of the block? F1 is pointing at the top left corner of the box forming a 65 degree ...
56. ### math

what time is spent on art and math if math is 21% and art is 14%
57. ### Math

The school's total attendance is 449, there are 81 present in math class, what percent of the total attendance is the attendance in the math class (to the nearest tenth)?
58. ### Physics

1) A physics book is moved once around the perimeter of a table of dimensions 1 m by 3 m. What is the distance traveled? 2) A window washer drops a brush from a scaf- fold on a tall office building. What is the speed of the falling brush after 2.7 s? (Neglect drag forces.) The...
59. ### math,help

Is it the same thing : fibonacci math and the golden mean? for one i know that this type of math deals with sequences but can someone explian to me briefly the differnces and similarities. http://en.wikipedia.org/wiki/Golden_ratio
60. ### PHYSICS

a 60 km/h wind is blowing in a direction 30 degrees north of east. a. what is the component of the velocity oriented to the east? b. what is the component of the velocity oriented to the north? The component east is 60cos30. For both a and b, draw a diagram with a horizontal ...
61. ### Physics

A planet has two satellite moons. Moon X has an orbital period of 2.13 days. Moon Y has an orbital period of about 3.53 days. Both moons have nearly circular orbits. Use Kepler's third law to find the distance of each satellite from the planet's center. The planet's mass is 2....
62. ### Physics to Elena

Estimate the total binding energy for copper. 550 MeV Estimate the energy, in joules, needed to break a 3.0g copper penny into its constituent nucleons. E= in Joules Please help me out I got 1st part I need the Energy in joules am confused please help me out...thanks Physics...
63. ### Physics sorry for reposting but I really need help

An example of the neutron absorption reaction is . 1 0 n+10 5 B-->7 3 Li+ 4 2 He The rest masses of each particle in atomic mass units (u) are 1 0 n= 1 u 10 5 B=10 u 7 3 Li =7 u 4 2 He= 4 u where 1u=1.66x10^-27 kg. calculate Q Q= in MeV I have the same question please ...
64. ### Physics

What is the resultant of two displacement vectors having the same direction? a. The resultant is the sum of the two displacements having the same direction as the original vectors. b. The resultant is the difference of the two displacements having the same direction as the ...
65. ### Math

What is the best way to study for a math test? Also, what is the best/most efficient way to write a math test? The format of my tests is usually basic questions, and then word problems. I'm always pressed for time at the end, so I have to scramble when answering the word ...
66. ### physics

The physics of satellite motion around Jupiter. A satellite of mass 2.00 x 104 kg is placed in orbit 6.00 x 105 m above the surface of Jupiter. Please refer to the data table for planetary motion included in this lesson. a) Determine the force of gravitational attraction ...
67. ### math

how do i do variables in math i don't figure it out your self:) Do you have a specific problem you want help with? The subject should be covered by your text and your teacher's in-class explantions.
68. ### math

for math im doing a survey of peoples heights and weights of like famous people and models..i was wondering how much does mary carey weigh and how tall is she? thanks
69. ### Math

My math book has this statement: "Describe how to use a Ten-Thousand Square to round numbers to the nearest 1000?" I don't really understand how to answer it.
70. ### Note to Math Pro

Please stick with helping people with math. Your answers to a foreign student studying to be an English teacher were incorrect and not helpful.
71. ### math (rounding)

Ms sue. can you,please show me how you got that answer. here is the math problem. write in standard form. thirty-six- thousandths.
72. ### Math

could someone please help me solve these two math problems? Which of the following numbers are integers? 2/13,570,0.096,-670,33.3? write in the lowest terms 2 1/4+4 1/7?
73. ### math

Find the range, median, and mode of each set of data and write the question along with the answers in your Math notebook and submit on 13,October 2010. A. 20, 12, 6, 17, 4, and 19 B. 13, 2, 17, 18, and 5 C. 16, 16, 4, 4, 23, 21, and 21 D. 13, 14, 15, 14, and 9
74. ### math

My little sister need help with her math having to do with congruent figures and motions and she has to describe how four turns can put a figure in its original position.
75. ### math

Need help Asap....with this wuestion for math>>>>>>> Mrs Garcia has a number cube with the following numbers on it: 4, 13, 8, 46, 8, 9. Whet is the probability that when she rolls it she lends on s factor of 8?...
76. ### Math Vocab

I am doing vocabulary for math and one of the words are negative correction. I search all over the place and didn't find a definition for that word. Help please.
77. ### math

what is a median using math what graph do you use when your listing peoples favorite sport and height how many types of grapha are there please name all
78. ### Math

How can I rewrite this statement for my math class: "The war funding bill...passed this week, but with three times fewer Democrats voting for it than did the last year.
79. ### Math

Helping grandson with math. I would like to know how to do it before he does. "How many different rectangles can be made with a perimeter of 20 units? (Remember, a square is also a rectangle.)"
80. ### Math

Check my math please... is the probability of three events with the following individual probs: 1/161x10/100x20/100=0.00012; and that is a 0.012% (1.2%) chance? Thanks
81. ### Math

Father Armando the math teacher adds Bens and the Indians scores atop each other and gets these numbers. 1, 2, 6, 7, 10, 12 Also, go back for Seconds.
82. ### physics

Biophysics strikes back The Biophysics students are having their usual Saturday night biophysics party performing physics experiments at a classmate’s home. This Saturday it is in an apartment building and you notice a managemnt student (MS) passed out in the stairwell. The ...
83. ### physics - drwls?

The flywheel of a steam engine runs with a constant angular speed of 250 rev/min. When steam is shut off, the friction of the bearings stops the wheel in 2.1 h. At the instant the flywheel is turning at 75 rev/min, what is the tangential component of the linear acceleration of...
84. ### math

5th grade math.. convert 95*C to *F = 6/7 x 14 = 12? 7 3/5 / 1 1/5= 19 3/8 - 4 3/4= Help
85. ### Math

can not unscramble this math word mmttuoaeive
86. ### math

can not unscramble this math word sserwmt
87. ### math

what dose the n stand for in the math question 54-n=24
88. ### math

how do i do distributive property math problem ?
89. ### math

How many times was math used in this movie?
90. ### Math

How do you use math induction to prove 3^n > 2n ? Thank you!
91. ### math

my son has a math problem i need help with. 21/14=7 what is the /
92. ### math

what are the math properties and thier definitions
93. ### math

What does the word "display mean in math?
94. ### math

how do you write the math expression for the product of 82 and g
95. ### math

i need a answer to a math problem
96. ### math

In math what comes after Tera.
97. ### math

what is a close circle in math mean
98. ### math

why are bacteria bad at math? its a worksheet.