physics( i have no idea how to go about gettign th

79,978 results, page 46

1. Physics

i have just started physics, can someone please show me step by step how to do this: The radius of Earth is 6 370 000 m. Express this measurement in km in scientific notation with the correct number of significant digits. thank you for your help
2. US History

Hello! I just need an idea for a topic in this assignment, as I am not sure of a topic to choose. The assignment is: The United States faces a number of challenges and issues in the twenty-first century. Some are domestic in nature, while others are related to foreign affairs...
3. Maths..

Uh...Yea... Sorry about this, but I"m trying to study and I need someone to walk me through, missed a lot of school. fyi, when there's a / its under the entire string before it until you hit the inequality symbol. Tony Bowled 135 and 145 in his first two games. Write and solve...
4. Math152

First, you must determine how many tickets are possible. In your state, the lottery balls have the numbers 1-46 on them and you must pick 6 numbers. a. Determine how many possible tickets exist for your state lottery. b. Now, you need to come up with a plan to buy all those ...
5. Com 155

I need to know if I have found the errors for an assignment. Thanks! I put the corrections in parenthesis. Comparative forms of superlative adjectives: Since 1995, the third week in April has been TV-Turnoff week. A not-for-profit group in Washington, D.C., came up with the ...
6. art need help

1. This is the study of beauty and art. (1 point)ethics harmony unity aesthetics 2. This view refers to how realistic the subject is in a work of art. (1 point)object view critical view subject view photographic view 3. This view refers to how clearly an idea or message is ...
7. Re: Plant biology

I'm doing a writing assignment on plant stress physiology. The stress that I chose to research was heat stress. One of the things that I have to do is describe at least 3 experiments that I plan to perform (hypothetically speaking, of course). At least one experiment should be...
8. english

i need to rite an english speech but i don't know what to do it on and my confidence levels are very very low somebody please help me. it has to be an aussie icon. Hi Caitlin. When we think of an Australian icon, we think of the Boxing Kangaroo. YOu can find information on ...
9. Biology

1. A theory and a hypothesis are different in that: A. you must have a theory before you can form a hypothesis. B. a theory is developed as a result of broad agreement among scientists and a hypothesis is a much less substantiated idea. C. a theory is much easier to disprove ...
10. Language Arts

Here are all the reading roles: 1. Discussion Director As a discussion director you will think about the following: - what images come to mind as you read - if you could interview the author what questions would you ask? Why? - predict what will happen next and why 2. Word ...
11. Language Arts

Plz help ms sue Question #1: Which characteristics make "The Rider" a lyric poem? a. It uses musical language and expresses feelings b. It tells a story about a historical event c. It rhymes and has a regular rhythm d. It uses repetition and describes a natural event i think ...
12. Restate Thesis

i realize this; i write them all the time. Last year i had to write an essay per week... that a lot of essays. =] Lady Macbeth and Ophelia are integral parts of these plays, yet they are polar opposites in characteristics and personality. I need a new way to restate this... ...

A contemporary liberal would most likely oppose a federal law created to: 1. impose the same income tax rate on all citizens 2. mandate stricter safety protections in the workplace 3. make healthcare more accessible to low-income families 4. strengthen the ability of unions to...
14. English

Which word would you use in American English instead of "top up"? (When you put money on your cell phone) I need you to check these sentences, too. Than you. 1) They set out on a windy day though small boats had been warned to stay off (I need a synonym) the water. When they ...
15. basic college reading

main idea of mythMyth 2: You have to read every word. Some experts suggest that you don’t need to read every word of a passage. This is particularly true once you break your reading task into steps with distinct purposes. For example, the first step in SQ3R is to survey. ...
16. Spanish

Usa ORACIONES COMPLETAS para completar estas actividades. (9) 1. ¿Tiene buena pinta? Escriba un párrafo de 4-5 oraciones para describir la foto encima de esta pregunta. Use una variedad de vocabulario y verbos. (5) Answer 2. ¿Te gusta la idea de comer tapas? ¿Por qué? (2...
17. stats

It was thought that students who dressed more neatly received better grades. To test this idea, a researcher rated each student on neatness of dress and obtained their grades on a standard school achievement test. The data are presented below. Higher scores indicate higher ...
18. Calculus - Find volume of cylinder

There is a cylindrical tank lying horizontally on the ground, its diameter is 8 feet, and length is 25 feet, the depth of the water currently in the tank is 2 feet. (1 gallon=231 cubic inches) How many gallons of water are in the tank? How many gallons of water will it take to...
19. Microeconomics help please (urgent)

I just want an idea on how to do this, so will only post one example: For each of the following situations, decide whether the bundle Lakshani is thinking about consuming is optimal or not. If it is not optimal, how could Lakshani improve her overall level of utility? That is...
20. math 11

A pilot of a downed airplane fires the emergency flare into the sky. The path of the flare is modelled by the equation h=-0.096(d-25)^2 +60 where h is the height of the flare in meters when its horizontal distance from where it was propelled is d meters. An emergency ...
21. Physics

What is the average braking force required of a 1200kg car in order for it to come to rest from 60km/h in a distance of 25m Physics - Damon, Monday, September 1, 2014 at 6:51am Vi = 60 km/h (1 h/3600 s)(1000 m/km) v = Vi + a t 0 = Vi + a t t = -Vi/a d = Vi t + (1/2) a t^2 25...
22. G ss jikowyi subject physics

Subject physics a spring 20m long is streched to 25cm by a load of 50n ? What will be his length when strench to 100n assuming that the elastic limit is not reached
23. Physics

Reposted under Physics... I've tried for hours to solve for v, but can't get the rearranging right. I'm using L= Lo sqrt 1- v^2/c^2 Can anyone suggest the first couple of steps? I can get the answer by the way, by substituting values 'til I get the contracted length. Original ...
24. Physics

Consider two students, a 65 kg guy and a 50 kg girl who are attracted to each other, gravitationally, that is. They sit next to each other in Physics class which means there is 1.5m between their centers. What is the magnitude of the force of gravity between these two students...
25. physics

Some of the branches of physics that you will study in this course investigate motion, the properties of materials, sound, light, electricity and magnetism, properties of atoms, and nuclear reactions. Give at least one example of an application of each branch.
26. Physics

A student reading his physics book on a lake dock notices that the distance between two incoming wave crests is about 0.65 m, and he then measures the time of arrival between the crests to be 1.8 s. What is the approximate speed of the waves?
27. physics

questoins asked in a physics lesson which i find hard to answer: 1) do all objects have the same acceleration when they fall to earth? explain the answer. 2) what is the difference between weight and mass? any help would be greatly appreciated :)
28. physics

Some of the branches of physics that you will study in this course investigate motion, the properties of materials, sound, light, electricity and magnetism, properties of atoms, and nuclear reactions. Give at least one example of an application of each branch.
29. physics HELP!!

3. A rocket car is traveling on a linear horizontal frictionless track when it suddenly runs out of fuel. The car has achieved a speed of 100 meters per second at the very moment the fuel is completely spent. The track then suddenly changes to a 30-degree incline from the ...
30. Precalc HW (NO IDEA HOW TO SOLVE)

Low Earth orbiting satellites orbit between 200 and 500 miles above Earth. In order to keep the satellites at a constant distance from Earth, they must maintain a speed of 17,000 miles per hour. Assume Earth's radius is 3960 miles. a. Find the angular velocity needed to ...
31. Physics A level

PLease tell me all thew physics equations i need to know and memorise for my a level exams with their units
32. Physics and the movies

Would A.I. and Pearl Harbour be good movies to analyze for physics mistakes?
33. English (8th Grade)

I can only figure about half of this one out: Your assignment is to go back and label the parts of speech of each word in this paragraph. The only ones which you do not know are articles (a/the) and determiners (these/those/this/that). There are: nouns, pronouns, verbs, ...
34. The children of willesden lane

1.How does Lisa Jura's music shape her identity? 2.How important is Lisa's religion to her identity? 3.What changes does Lisa and her family experience so far in the book? Which do you think were te most difficult for Lisa to accept? for her parents? how have you coped with ...
35. algebra 2

Two families met at a par for a picnic at the end of the day, they part ways. Family A leaves 15 minutes after Family B and travels east at an average of 42 mph; while family B travels west at an average of 50mph. Both families have an approximately 160 miles to travel. 1.)...
36. Chemistry

Determine the concentration of each type of ion in O.100M solutions of each of the following compounds. a. KBr b. Rb2S c. CuCl2 d. Mg(NO3)2 If someone could just even explain what they are asking for and how to do the problem, I would greatly appreciate it. The idea here is ...
37. HHS-human service administrator

This is my assignment for my HHS class. I have already completed an assignment and some reading regarding budgets, but I'm not quite grasping the idea of everything. I'd like any advice or information you could give me to better understand line-item, functional and program ...
38. Chemistry

Calculate the initial molarity of KNH2 and the molarities of K+, NH3, OH-, and H3O+ in an aqueous solution that contains 0.75 g of KNH2 in 0.255 L of solution. You may ignore the reaction of NH3 with water. I already found the initial molarity, but I am not sure how to find ...
39. pre-alg portfolio

**SOB STORY INTRO** This portfolio is on percent predictions and I very literally have no idea how to do it. This is a 30% grade for me and I only have a 68% right now in Pre-Alg, (which is confusing because I usually get 90-100% grades on my answers and rarely, if ever cheat...
40. Physics Physics Physics...

A billiard ball traveling at 3.8 m/s has an elastic head-on collision with a billiard ball of equal mass that is initially at rest. The first ball is at rest after the collision. What is the speed of the second ball after the collision?

42. Nuclear Physics

I'm interested in studying Nuclear Physics at the university and would llike to know about the career opportunities avilable for a Bachelor's degree holder.I tried googling and found several but would like to get advising from a tutor who have experience in the field. Thank you!
43. physics

A student of mass 64.7 kg climbs up the stairs in the Physics Department, with a vertical height change 3.1 metres. What is the change in gravitational potential energy? Give your answer in Joules, to 2 significant figures.
44. Physics

A pistol is shot upwards at an angle of 37 degrees above horizontal, with an initial velocity of 375m/s. What height does it reach? What is its horizontal range? (I pretty much know what formulas to use, but I'm not quite sure HOW to use them.. Also you should know that this ...
45. Are there even any physics tutors here???

Sorry if I'm sounding as if I'm whining but I'm getting pretty annoyed at how there are many unanswered physics questions. Literally posted a question two months ago and never got any help... This is kinda annoying because the questions get lost in the large feed
46. Physics

I am having a problem answering a physics question: A plane is heading due south and climbing at the rate of 60 km/hr. If its airspeed is 540 km/hr and there is a wind blowing 110 km/hr to the northwest, what is the ground speed of the plane?
47. Physics

Hello, I am doing a physics experiment regarding rotational motion and equilibrium. We have the following lab setup and are supposed to find the unknown mass. How should I approach this? file:///C:/Users/Rahul/Desktop/Lab%20Drawing.jpg
48. physics

A physics student drops a book into a shaft 250m deep,where the average mine temperature is 5 degrees celsius.Show that the sound of the book striking the bottom is heard after 7.82 seconds
49. Physics

A magnifier has a magnification of 6x. How far from the lens should an object be held so that its image is at the near point distance of 25 cm? I tried doing the problem by using the equation M = 25cm / f. M = 25 cm/6 = 4.17 cm However when I put the answer into mastering ...
50. Math

In a mixed number or fraction problem, you have dividing and multiplying. Now if you were given a list of multiplying and dividing mixed number and fraction word problems, how can you tell the difference between multipling and divinding word problems. It would be easier to ...

I do not have any Idea how to set this up. Please walk me through the steps. A.) If a customer buys x copies then he or she pays \$500 sqrt x. it cost the company \$10,000 to develop the program and \$2 to manufacture each copy. If a single customer were to buy all the copies of ...
52. Math Pre-Alegebra

Please you have no idea how bad at math I am please just tell me if I am correct. :( thanks. For questions 1-2 use the following prism. The measurement's of the prism are width=41 ft. lenghth-32 feet. height-49 feet. 1 find the surface area for the given prism. A-7,154 ft^2 B-...
53. History

In his book Two Treatises on Government, Locke refuted the divine right of Monarchy, and established a theory which states that all men are men are born free and equal. Each person should have equal access to the natural rights of life, liberty, and property. No law should ...
54. History

I just want my answer to be clarified. So the original idea of boundaries was to separate the land among the territories and provinces...??? And make locations on maps seem easier? --I still feel like I'm missing out on some things, but I don't know what other information to ...
55. IT Information Systems Technology

Why are database management systems important in the business community? Give atleast two reasons. Let's begin with what a database is. A database is a collection of data records. These records are on your computer and a program is used to access the records, change the ...
56. Language Arts

When Louis Meyer was five years old, her mother took her to a science museum. That day, young Louis encountered her first snakes, and she's be fascinated with the reptiles ever since. Meyer now breeds snakes for educational programs. She takes her slinky friends to schools, ...
57. Chemistry

15.0 moles of gas are in a 6.00L tank at 298.15K. Calculate the difference in pressure between methane and an ideal gas under these conditions. The van der Waals constants for methane are a=2.300 L^2*atm/mol^2 and b=0.0430 L/mol. I found the idea gas pressure to be 61.2 atm by...
58. Law!

Hi Everyone, I have to deliver a presentation on euthanasia, which requires a creative aspect that may involve the class as well. (My position is against euthanasia by the way). I was thinking that I could have a game or bring something in that could act as an analogy for the...
59. Chemistry

I need to work out the density of the gaseous oxide of arsenic at STP in g L-1 I realise density = mass/volume but my answer works out very high!! I have already worked out the volume to be 52cm^3 (Cubed). the mass to start with was 0.702g and at the end of the reaction was 0....
60. Chemistry

1. Why cannot NaOH be used as primary standard for HCl? 2. Aside from carbonates, what other compounds can be analyzed using the double indicator method? What are the requirements for a sample to be analyzed using the double indicator method? 3. what is a carbonate error? ...
61. Effective Learning Environment

Mother Goose Child Care is remodeling their preschool facility and is on a tight budget. Each of the teachers has a different idea about how to save money on the bathroom. Which of the following responses most closely matches the information found in the textbook? A. "I think ...
62. mechanical

A cylindrical tank with flat endplates is constructed from two sections that are welded together circumferentially.The outer diameter of the tank is 1.20, and the wall of the tank is 20.0 mm thick and the mamimum internal pressure is 2.00 MPa. (a) Calculate the maximum hoop ...
63. scince i try i have no idea

1. Patty wants to go to the beach so need to plan her trip. The beach is 165 km away from her house. She will be on the Parkway most of the time going an average of 30 km/h. What time will she reach the beach if she leaves her house at 6:00am? 2. Jack has to take the bus to ...
64. english

9. Which of the following was not a major influence of the Modernist writers? (1 point) hope World War I World War II prosperity 10. An author’s attitude toward a piece of work is (1 point) tone voice style mood 11. In Hemingway’s short story, “In Another Country,” why...
65. Universal gravitation, fields

Really basic question but I wanted to just double check something. Im trying to work out where to place a point particle between two objects (one has a mass 4 times the other). Now ive used very basic approximations as its just a rough idea I need so ive taken the mass of one ...
66. english

Who is the intended audience for the novel The Scarlet Letter? That is a good question. He wrote of historical times, of sin, guilt, and repentance. He wrote of social mores, social pressure, and the pain of reconciling this with personal morals. I think the gist of his thrust...
67. college physics

A student of mass 64.7 kg climbs up the stairs in the Physics Department, with a vertical height change 3.1 metres. What is the change in gravitational potential energy? Give your answer in Joules, to 2 significant figures.
68. Physics

In a Physics laboratory class, an object of mass 2.1 kg, attached by massless strings to two hanging masses, m1= 1.0 kg and m2= 4.0 kg, is free to slide on the surface of the table. the coefficient of kinetic friction between m2 and the table is 0.30. calculate the ...
69. 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 #3: A 30 kg kid on rollerskates is being pushed by his mom with a force of 10 ...
70. help help help chemistry

why will no one answer this question? For a one step reaction, the activation energy for the forward reaction is 40.0 kJ/mol and the enthalpy of reaction is -20.0 kJ /mol. Which statement below is true? a. The activation energy of the forward reaction would be affected to a ...
71. English

How Mosquitos Came To Be Long time ago there was a giant who loved to kill humans, eat their flesh, and drink their blood. He was especially fond of human hearts. "Unless we can get rid of the giant," people said, "none of us will be left," and they called a council to discuss...
72. L.A. The Giver!

Which of the following passages from the novel support the idea that the Giver is a heroic character? A. I do know that I sat here numb with horror. Wretched with helpessness. B. "Be quiet Jonas," The Giver commanded in a strange voice. "Watch/" C. The Giver rose from his ...
73. Language Arts

1.Which Idea Is Conveyed In Both "Dust Of Snow" and Who Knows If The Moon's A.Nature can be playful (MY ANSWER) B.Nature can be harsh C.Nature can be annoying D.Nature can be mysterious 2.To Which Sense Do Both "Who Knows If The Moon's" and "Dust Of Snow Appeal Most Strongly A...
74. French - SraJMcGin/Frenchy

Que remarquex-vous interessant dans tableau ..Aqueduct and Lock? English: [In painting, "Aqueduct et Lock", the scenery just amazes me, the reflection effect looks really nice] French: [ En tableaux, "Aqueduct et Lock", le paysage juste etones moi, le reflexion effet, regarde ...

There exist irrational numbers a and b so that a^b is rational. look at the numbers √2^√2 and (√2^√2)^√2 a) use similar idea to prove that there exists a rational number a and an irrational number b so that a^b is irrational b) prove that if 2^&#...
76. math

There exist irrational numbers a and b so that a^b is rational. look at the numbers √2^√2 and (√2^√2)^√2 a) use similar idea to prove that there exists a rational number a and an irrational number b so that a^b is irrational b) prove that if 2^&#...
77. Social Studies

Four statements by Enlightenment writers: 1. To secure these rights, Governemts are instituted among Men, deriving their just powers form the consent of the governed. 2. When a Monarchy is once bitten it the quick, by those Democratical writers...It wants nothing more than a ...
78. english

i need help coming up with a question that could be the basis for a research essay. I don't know what topic you have in mind, but here are a few ideas to get you started. If there's nothing here, maybe one of these will trigger another idea in your mind. What do Corrie Ten ...
79. Physics

Physics instructor grew up with a 3 second rule for lightning bolts to allow estimation of the distance of thunderstorms. Why is that? Explain the difference between the “3 second rule” and the “5 second rule”.
80. Health

My dog all of a sudden has a small bright red lump on her front left leg. I have no idea what it is, and I'm kind of worried. It might just be a scab or something, but I don't know. Does anyone know what it could be? Thank you for using the Jiskha Homework Help Forum. Be sure ...
81. Counting and probability

I have no idea on how to do this, please help! Maya is invited to a wedding. She's gets all the items (dress pants, shoes, necklaces and a scarf) she finds suitable to wear out of her closet. A) Maya has two dress pants and four blouses. how many outfits does she have ...
82. Social Studies

1. Why was the presidency of George Washington considered to be so significant? 2. Why were Northern states in favor of Hamilton's protective tariff? 3. What did Washington mean when he wrote that the maxim "honesty is the best policy" should be applied to foreign relations? 4...
83. CALCULUS

I was given a homework assignment that I need to do but have no idea where to even start. If possible, please include steps. Thank You!!! A factory manufactures widgets. The rate of production of widgets after t weeks is (dx/dt)=30(1-(20/((t+20)^2))) widgets/week. A) Determine...
84. English

Identify the structure used in each of the sentences below. 1. The hamburger came from Hamburg, Germany, and the hot dog came from Frankfurt. simple compound complex compound-complex 2. The idea of placing meat on a bun, however, came from the United States. simple compound ...
85. PHYSICS - Waves

Can someone tell me how to get the answer to this question? Just a formula would be great. It's on my physics study guide for my unit test. If 3 sound waves pass a microphone in 4.0 s while traveling 5.0 m/s, what is the wavelength of the waves? (6.67 m)
86. PHYSICS-Help required

My physics questions are not on graphs, this is just a practise quiz I'm doing. All the questions I've done so far were not guessed answers, I did my work on a separate piece of paper, all I really had to do was divide. The other questions above that I need help on, cause I ...
87. kw university

You want to get an idea of the magnitude of magnetic fields produced by overhead power lines. You estimate that a transmission wire is about 11 above the ground. The local power company tells you that the line operates at 16 and provide a maximum of 83 to the local area. ...
88. English

I just finished reading Macbeth for school. My teacher assigned a essay for us to do. She asked if we think the witches' predictions were right or if the witches' predictions were disappointing because of duality and doublespeak. I said that I believe in neither and I believe ...
89. Economics

no idea what to do guys, little help please 11. Answer the next three questions on the basis of the following production possibilities data for Francia and Galacia. All data are in tons. Francia production possibilities: A B C D E Soup 60 45 30 15 0 Nuts 0 15 30 45 60 Galacia ...
90. Chemistry VERY URGENT PLEASE

A) NaOH(s) > NaOH(aq) B) NaOH(s) + HCl(aq) > NaCl(aq) + H2O(l) C) NaOH(aq) + HCl(aq) > NaCl(aq) + H2O(l) Examine the 3 reaction equations, and determine the relationship between them. Demonstrate this relationship by combining the equations in a manner consistent with...
91. Physics plz

Do any teacher here have an email plz becouse I want to send some pictures for question ,,, physics plz or how can I attach picture here ????
92. Physics

Sir can you help me to solve this question on Physics Two persons p and q are standing 100m away from a high wall and separated by distance d. P claps and q hears two sound (direct and echo) with a time difference of 0.2sec. Find the distance between p and q
93. physics

Identify the area of physics that is most relevant to each of the following situations. a)A high school football game b)Food preparation for the prom c)Playing in the school band d)Lightning in a thunderstorm e)Wearing a pair of sunglasses outside in the sun
94. physics

Two small pith balls, each of mass m = 16.6 g, are suspended from the ceiling of the physics lab by 1.8 m long fine strings and are not moving. If the angle which each string makes with the vertical is è = 19°, and the charges on the two balls are equal, what is the ...
95. Physics

"if u could do this physics problem thatd be super. A coach is hitting pop flies to the outfielders. If the baseball (m = 145 g) stays in contact with the bat for 0.04 s and leaves the bat with a speed of 50 m/s, what is the average force acting on the ball?"
96. Physics

Two small pith balls, each of mass m = 10.1 g, are suspended from the ceiling of the physics lab by 0.8 m long fine strings and are not moving. If the angle which each string makes with the vertical is è = 42.1°, and the charges on the two balls are equal, what is the ...
97. Physics

Two small pith balls, each of mass m = 17.4 g, are suspended from the ceiling of the physics lab by 1.2 m long fine strings and are not moving. If the angle which each string makes with the vertical is = 17.9°, and the charges on the two balls are equal, what is the magnitude...
98. Physics

Two small pith balls, each of mass m = 16.6 g, are suspended from the ceiling of the physics lab by 1.8 m long fine strings and are not moving. If the angle which each string makes with the vertical is è = 19°, and the charges on the two balls are equal, what is the ...
99. Math

Out of a group of 600 students taking computer,mathematics or physics,there is no student taking both computer and mathematics.Every student takes computer or mathematics.150 takes physics and mathematics and 250 take only one of the subjects.Find 1) the number of students ...
100. chemistry

For a one step reaction, the activation energy for the forward reaction is 40.0 kJ/mol and the enthalpy of reaction is -20.0 kJ /mol. Which statement below is true? a. The activation energy of the forward reaction would be affected to a greater extent than the activation ...