physics please HELP !

130,422 results, page 92

  1. Physics

    I am trying to help my step son who missed half of physics class due to a funeral. A laser beam is being shot through two different materials that have been stuck together. if theta 1 = 65.5 and theta 2 = 49.8 what is the index of refraction? (I got 1.2 which is correct) but ...
  2. Physics

    I know I need to show my work but the problem is that I don't even know where to begin. I am taking an online physics class with a teacher that is not willing to help. So any guidance would be much appreciated. Consider the two vectors: F1: (220N, 41°), F2: (50N, 139°) The ...
  3. Physics

    During a particular thunderstorm, the elctric potential difference between the clouds and the groud is Vcloud-Vgroud = 10^9 volts with the cloud being at the higher potential. Now, there is a lightning flash in which a charge of -25C is transferred from the ground to the cloud...
  4. physics

    Hey guys! I was hoping someone could help me with the first two questions. I'm seriously brain dead right now and cannot figure these out. baylor.edu/content/services/document.php/110735.pdf 1) Suppose you see the trace to the right on your oscilloscope screen. You have set ...
  5. TO DRWLS/MATH HELP PLEASE

    How do i solve inequalitites with three variables. I still can't figure it outplease help. x+y=1 y-z=-3 2x+3y+z=1 THE ANSWERS ARE X=3,Y=-2,Z=1 i KNOW THE ANSWERS I JUST DON'T KNOW HOW THE BOOK GOT THE ANSWERS . i 'VE TRIED MANY DIFFERENT WAYS AND I STILL DONT' UNDERSTAND IT ...
  6. Health care please check answer

    Please check my answer thank you :) A patient visits the doctor's office with abdominal pain of two days' duration. Medical history is significant for tonsillectomy and hypertension. The patient denies alcohol and drug abuse. The rectal exam confirms heme-negative stool. ...
  7. Speech

    PLEASE, Can some one please help me complete the SECONDARY SUPPORT for this speech topic outline? Thesis Statement: My failures in high school taught me three important lessons in life. Primary Support 1 : I realized the importance of hard-work Secondary Support 1: Secondary ...
  8. Algebra PLEASE PLEASE HELP ASAP

    1.Justin writes the letters I-L-L-I-N-O-I-S on cards and then places the card in a hat. What are the odds in favor of picking an I? a. 5:3 b. 3:5 c. 3:7 d. 1:2 my answer is b? 2. Justin writes the letters I-L-L-I-N-O-I-S on cards and then places the cards in a hat. What are ...
  9. English

    Could you please check these phrasal verbs i'm unsure of? thank you. 1) They are cutting off the water/gas supply tomorrow. The chairman cut him out of the discussion. 2) The light went off (out is possible?) all of a sudden. Can you switch off /put out the light, please? 3) ...
  10. physics

    The pole vault landing pad at an Olympic competition contains what is essentially a bag of air that compresses from its "resting" height of 1.1 m down to 0.1 m as the vaulter is slowed to a stop. (a) What is the time interval during which a vaulter who has just cleared a ...
  11. Science- Check Please :)

    I only have a couple questions left but I want to be sure that my answers are correct so can someone please help me by checking my answers and if they are wrong can someone please let me know? Thank you! Question Number 1: A freshwater marsh is a type of ecosystem. Grasses, ...
  12. Physics

    Two geekie physics students with a combined mass of 131 kg jump into their old car to run out for some late night pizza. The distance between the front and back axles of the car is 2.9 m. When they get in the car, the springs compress a total of 9.3 cm. On their way to the ...
  13. Science

    What is the mathematical calculations that lead to the theory of Dark matter or Dark energy? What is the calculation for energy in the universe? What is the calculation for matter in the universe? What is the discrepancy between the two calculations? Please note that we don't ...
  14. math please help

    Your parents have just brought you a care and now you have an opportunity to "deck it out." how would you change/ enhance your vehicle to make it your dream car? What features/parts would you add, including taxes. Imagine you have a job, $1000.00 in savings account and can ...
  15. Physics

    A bullet is fired horizontally from the roof of a building 100 meters tall with a speed of 850 m/s. Neglecting air resistance, how far will the bullet drop in 3 seconds? 1 29.4 m 2 44.1 m 3 100 m 4 2550 m Answer should be choice 2) 44.1m BUT I DON'T GET IT! Please help me;( if...
  16. ECONOMICS PLEASE PLEASE HELP!!

    Lots of folks these days believe that CO2 emissions generated by human actions --- notably production of goods and services --- are causing climate change, more specifically, global warming. For the sake of dialectic discussion, let's suppose that claim is correct. If it is ...
  17. Math

    in a class of 60 students 30 like maths 25 like physics 30 like chemistry. if 10 like both physics and maths 5 like maths and chem and 5 like phy & chem and 3 like all the subjects. find student like none of subject of if 100 students were surveyed
  18. Math

    in a class of 60 students 30 like maths 25 like physics 30 like chemistry. if 10 like both physics and maths 5 like maths and chem and 5 like phy & chem and 3 like all the subjects. find student like none of subject if 100 students were surveyed
  19. Math check my answer

    77 is what percent of 192? A. x/100= 77/192;4.01% B. x/100=77/192; 40.1% C. x/77= 100/192; 77.3% D. x/100= 192/77; 249.4% My answer is B. Please help and check my answer if I am wrong please correct me thank you.
  20. Physics ~please help me!~

    1.)A 0.5 kg hockey puck moving at 35 m/s hits a straw bale, stopping in 1 s. a) What impulse is delivered to the ball? b) What force is exerted on the puck? 2.) A racing car with a mass of 1400 kg hits a slick spot and crashes head-on into a concrete wall at 50 m/s, coming to ...
  21. Math - More Precision and Significant Digits

    Please help me with the following problems: 3. Choose the more precise measurement. 6 cm or 2.5 cm I think it is 2.5 cm. Is this correct? 7. Choose the less precise measurement and explain why it is less precise. 2.8 mm or 3.79 mm I think the answer is 3.79 mm. Is this correct...
  22. Physics- 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, ...
  23. French

    Can someone please proofread my paragraph? Sortir Diner Je suis allé à un restaurant chinois. Je suis allé avec ma famille. C’été un traditionnel repas de Noël famille. Pour hors d’oeuvre, j’ai mangé (Egg Drop Soup). Pour le plat principal, j’ai mangé de ...
  24. 8th Grade Electives Advice

    Hi, I'm really struggling with my decision about two electives that I really like. One is Journalism and the other is Creative Photography. If anyone knows or has experience can you please tell me the pros and cons about these two electives please? Also, I only have a few days...
  25. English

    Can you please check these sentences for me, please? Thank you very much. 1) There are other teenagers who like wearing baggy jeans. You'll listen to the test twice. 2) You are asked either to cross the correct alternative (among three) or to fill in the blanks with a suitable...
  26. Physics

    An 100.0-N crate of apples sits at rest on a ramp that runs from the ground to the bed of a truck. The ramp is inclined at 29.0° to the ground. (b) The interaction partner of this normal force has what magnitude and direction? Magnitude 87.46 N Direction 61° below the ...
  27. BUSINESS COMMUNICATION

    I HAVE 5 COMMITTEE MEMBERS I HAVE TO PERSUADE WITH DIFFERENT PERSONALITIES. THEY HAVE TO AGREE ON MY SERVICE. I HAVE TO INCREASE EFFICIENCY OF A BUSINESS OPERATIONS AND KEEP MY CURRENT EMPLOYEES HAPPY. Please note that we don't do students' homework for them. Our tutors try to...
  28. Physical Science [repost]

    needed help on these 3 questions that I don't quite understand. Can someone please explain to me how to solve the answer? Use this scenario to answer questions 1-3: A car crashes in a tree at a velocity -26.6 m/s. The passenger in the car is wearing a seat belt and is stopped ...
  29. physics

    hello everyone...i just has a general question. I am trying to study for physics. The chapter is contains potential energy, conservative, non conservative, kinetic energy. They have a definition of each , but i still don't have a better understanding of them. I cant ...
  30. excretion

    Question: which is an example of excretion? a) release of sweat from the sweat glands b) removal of carbondioxide from the lungs Please tell me what is the answer. I thought both urea(from the sweat) and CO2 are products of excretion? In fact, my textbook says that "carbon ...
  31. physics

    In preparation for a demonstration on conservation of energy, a professor attaches a 7.2-kg bowling ball to a 3.4-m-long rope. He pulls the ball 23° away from the vertical and holds the ball while he discusses the physics principles involved. Assume that the force he exerts ...
  32. Chemistry

    Can someone please help me on this two Chemistry questions...they are from my lab....the lab was on Acids and Bases using Red Cabbage Indicator. Q1- How consistent was the cabbage juice indicator for this lab? Discuss the limitations of using red cabbage juice as an indicator ...
  33. physics

    what is the physics behind the process of administering the following 1. measurement of blood pressure using sphygmomanometer 2.giving injections 3.administering intravenous infusion 4.giving oxygen in the ward and operating theater 5. administering blood transfusion 6.sucking...
  34. Math-Help-please?

    Source: At the end of 1993, scientists tracked 1550 nonfunctional components in orbit and projected 42 such objects are added each year. Suppose that an average of 15 of these are brought back to Earth each year. Question. Let t represent time in years. Write the function D ...
  35. math ms sue please help, PLEASE!!!!

    also which are independent events? a) a student spins a spinner. on the first spin she spins a six and on the second spin she spins a three b) a student chooses a card from a deck of 20 cards. the student keeps the card and chooses another one. c) a student tosses a coin three...
  36. Algebra please help out

    Tomas makes balloons sculptures at a circus. In 180 minutes, he uses 252 balloons to make 36 identical balloon sculptures. Part A question how many minutes does it take to mAke one balloon sculpture? How many balloons are used in one sculpture? b. What is Toma's unit rate for ...
  37. Physics

    12th grade physics ap question. A baseball with a mass of 120 g is hit 21.8 m into the air. The ball is caught by the third baseman 2.5 m above the ground. What potential energy did the ball develop at its highest point? How much potential energy did it still have when it was ...
  38. Journalism Lead Help

    I posted a question about this a hour ago about this. I just wanted some feedback to see if my lead answered the Who, the What, and the How. If it hasn't please give me some help to improve it please! Thank you! My lead about Online Journalism: Online journalists can cover a ...
  39. Physics

    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...
  40. Physics

    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...
  41. Physics

    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...
  42. PHYSICS

    Hi! I have some questions from a study guide in my physics class, and they give me the answer, but I have to show how to get the answer. I did most of them, but need help with these. Here is problem #8: A 20 kg block of ice slides without friction down a long hill. The start ...
  43. algebra[please check]

    in questions 1 and 2, write an equation of the line in slope-intercept form. 1. the slope is -4/3; the y-intercept is -2. 2. the slope is 0; the y-intercept is -5. my answers: 1.y=-4/3-2 2. y=-5 ______________________ write an equation of the line that passes through the point...
  44. Physics please check

    A bowling ball encounters a 0.76 m vertical rise on the way back to the ball rack, as the drawing illustrates. Ignore frictional losses and assume that the mass of the ball is distributed uniformly. If the translational speed of the ball is 3.60 m/s at the bottom of the rise, ...
  45. LAL

    CHECK PLEASE are theses ALL complex sentences? 1.i will help you with your homework after you watch the baby. 2. jake stared at me as if he had seen a ghost. 3.you can order whatever you want from the menu. 4.we will be on time unless there is a traffic jam 5.if our teams wins...
  46. Physics

    A ferris wheel, radius 5.0m, rotates once every 8.4 seconds. a) What is the centripetal acceleration of a 60kg person at the circumference? b) calculate the force of the seat on the person at the highest point. c) calculate the force of the seat on the person at the lowest ...
  47. math

    Find the slope and the intercepts of each line. g(x)=54x-1 x=-3 Help please! :) g(x)=54x-1 x=-3 I am assuming that you are trying to determine the value of g(x) when x equals -3. If g(x)=54x-1 , then g(-3)=54(-3)-1 Evalute and you have your answer. No, sorry. g(x)=54x-1 and x...
  48. 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
  49. maths

    Starting with x0 = 0 (x0 has diagonal 0 that is smaller and towards the bottom) use the iteration formuala xn+1 = 4/ xn^2 +5 twice (for xn+1 the n+1 is smaller than x and diagonal towards the bottom also for xn^2 the n^2 is smaller than the x and diagonal towards the bottom of...
  50. 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...
  51. 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...
  52. sci 241

    could any one PLEASE help me get started on this??? I DO NOT UNDERSTAND IT!!!!!!! any advicer or help PLEASE URGENT Write a 1,400- to 1,750-word paper in APA format outlining your healthy eating plan. Be sure to discuss: o Your current eating habits (as documented in the Food ...
  53. Finance

    Please help me,math word problems make my brain go crazy. Some friends are urging you to chip in with them to buy a vacant parcel og land on the outskirts of your city. A one-fourth interest would cost you $10,000.Total annual expenses on the property are $2,200.When the ...
  54. Algebra 1- A few questions, please help

    **<--That means my answer choice 1. For the data in the table does y vary directly with x? If it does write an equation for the direct variation. x|y 8|28 16|56 20|70 a. yes;y=5x b. yes;y=x+20 c. yes;y=3.5x** d. no; y doesn't vary directly with x 2. For the data in the ...
  55. 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 ...
  56. Math

    In November 1994, the first live concert on the Interent by a major rock n roll band was broadcast. Most fans stand in lines for hours to get tickets for concerts. Suppose you are in line for tickets. There are 200 more people ahead of you than behind you in line. the whole ...
  57. 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...
  58. KEVIN CAN'T YOU PLEASE HELP ME!!?!?!??!?!?!?!?!

    y-2x=-5 3y-x=5 y = -5 + 2x 3y-x = 5 so 3*(-5 + 2x) - x = 5 -15 + 6x - x = 5 -15 + 5x = 5 x = 20/5 x = 4 y = -5 + 2 *4 y = 3
  59. Algebra

    Please help!! 5/2y+14
  60. Math help please!!

    2m + 1 ---- ---- 6m-3 3-6M
  61. Math

    Please help 7+(-9) + (-5) + 6 1/3 + (-5/6) + (-1/2)
  62. algebra2

    (3b-2)/b+1=4-(b+2/b-1) please help
  63. Calculus- please help

    Let f(t)=(t^2+3t+8)(2t^2+6). (a) f'(t)= (b) f'(4)=
  64. algebra

    (-2)/(x-1)=(x-8)/(x+6) please help me with this
  65. damon please help (: !

    1. 2x > -6 and x - 4 < 3 2. x + 3 > 2x + 1 and -4x < -8 3. -6 < x + 3 < 6 4. -3x > -6 or x - 5 < 2 5. x - 2 > 2x + 1 or 10 > -2x + 2
  66. PLEASE HELP

    What is the domain of y=x
  67. arithmetic

    please,can you help me with this? f(x)=x-1/2 g(x)=x+2/3
  68. MATH PLEASE HELP!

    2/x2-9 + 1/3x+9
  69. MATH

    X-4=3x+12 X=? please help
  70. algebra 1

    could you please help me? b+10 b-6 ---- = ----- 6 2
  71. math

    HELP PLEASE! 4 1/5 x 3/4 x 6 =
  72. algebra 1

    [2(6-1)]/2=? PLEASE HELP ME!??!
  73. math

    2 +2 3/7 help please
  74. Math

    [6x + 5]/3 = 3x/7 - 2 Please help.
  75. Math

    please help me x^3-3x-3=0 thanks
  76. Algebra 1

    4/3r-3<r+2/3-1/3r.......... ...........HELP ME PLEASE
  77. math

    what is 5/8x=2/5 ?Please help?
  78. college

    5/2x+1/4x=9/4+x Please help!
  79. Please help

    F(x)=-x²+10x-18
  80. s.s

    please helpme thank you
  81. PreCalc

    please h t t p : / / w w w . j i s k h a . c o m / d i s p l a y . c g i ? i d = 1 2 6 0 4 8 7 4 9 0
  82. english

    please help me
  83. help

    no I did not know could you please tell me how to do it, and thank you.
  84. maths

    e^x=3e^-x x=? Please help!
  85. algebra

    4(w-3)=-12, Help Please.
  86. Algebra, please help!

    (2y+5)(y-3)
  87. algebra, please help!

    (-7+p)(8+p)
  88. Math

    can you please help me with $6.30 x 8.5% thanks!
  89. math

    3/2y-3/2y+4 could you help me please
  90. math help please

    x+4/5-x+3/3=-7/15
  91. Please help!!!plzz thank u!:)

    x-1/x+3=x+2/x-4
  92. algebra

    x^2+4x-8 (X+4)^2=6 could you help me please.
  93. math

    X^2+4x+3=0 please help
  94. Algebra

    Please help: (y^2+4y/y^2+2y-8)/(y/y+2)
  95. solve please

    xy = 12 y = 2x + 2
  96. math please help!!!!!!!!!!!!!!!!!!!!!

    4=W on W. I don't get it.
  97. Algebra 1

    1/4 x (7+3g)= - g/8 please help
  98. math

    please help me I don't know how to do this....
  99. algebra

    4y - 10 + y + 51 = 6y + 50 - 4y Please help me. thanks!
  100. algebra

    8(5x-2)=84 Please help. Thank you!
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