129,971 results

Three charges, q1=+45.9nC q2=+45.9nC and q3=+91.8nC are fixed at the corners of an equilateral triangle with a side length of 3.70cm. Find the magnitude of the electric force on q3.

A jet airplane has an intensity of 97.7W/ m^2 when heard at a distance of 30.0m. What is the maximum sound intensity heard by a person on the ground when the airplane is 10100m overhead?

A speedboat starts from rest and accelerates at +1.90m/s^2 for 7.00 s. At the end of this time, the boat continues for an additional 6.00 s with an acceleration of +0.529m/s^2. Following this, the boat accelerates at -1.47m/s^2 for 8.00 s. **What is the total displacement of ...

The sound intensity of 1.2x10-12J/m2s is the threshold of hearing for humans. What is the amplitude of the motion of the air molecules if the speed of sound in the air is 343m/s and the density of air is 1.28kg/m^3? Take the frequency of the air molecules as 1000 Hz

A microphone has an area of 3.0cm^2. It receives during a 6.00s time period a sound energy of 1.0x10-11J. What is the intensity of the sound? b). Using the intensity in the previous question, what is the variation of pressure in the sound wave if the speed of sound is 343m/s ...

Forces of 11.1N north, 19.9N east, and 14.0N south are simultaneously applied to a 3.62kg mass as it rests on an air table. What is the magnitude of its acceleration? I already did this part and i got 5.56 m/s^2 BUT PLEASE HELP ME WITH part b!! b)What is the direction of the ...

A charge is to be placed at the empty corner to make the net force at corner A point along the vertical direction. What charge (magnitude and algebraic sign) must be placed at the empty corner if the three charges have the same charge of +7.63 μC?

english
i need help rewording a sentence.... well here it is: Their will and intellect lost ability to know and please God. please help me soon because it's a report due really soon.... thanks

Graphs
x + 2y = -4 How do I graph this?can you please help? Assign values to x and solve for y or assign values to y and solve for x. Makre a table. X........Y 0........-2 2........-3 etc. I almost always assign a value of zero to Y, too, and calculate X. Y = 0; X = -4 i don't get it...

an object on an inclined ramp of mass 1.39kg. The angle of the inclined surface is 29deg with the horizontal. The object on the ramp is connected to a second object of mass 2.17kg on a horizontal surface below an overhang that is formed by the inclined surface. Further, an ...

Carnot engine operates between 170°C and 23°C. How much ice can the engine melt from its exhaust after it has done 4.5 104 J of work?

A Carnot engine operates between 170°C and 23°C. How much ice can the engine melt from its exhaust after it has done 4.5 104 J of work? _____kg

statistics
Government Data assign a single cause for each death that occurs in the United States. The data shoe that the probability is 0.27 that a randomly chosen death was due to heart disease, and 0.23 that is was due to cancer. What is the probability that the death was due to some ...

To Ms.Sue or any Math helpers

Math
How do you turn 11/12 ( a fraction) into a percent?? Help please its homework due very soon!!!!!! Thankz.

PHYSICS DUE SOON
A 95.1-g ice cube is initially at 0.0°C. (b) What is the change in entropy of the environment in this process? ___________J/kg

Find the limit (if it exists). (If an answer does not exist, enter DNE.) lim f(x) as x approaches 3, where f(x)= x^2-8x+9 if x<3 -x^2+8x-21 if x>/3 (greater than or equal to 3)

A copper calorimeter can with mass 0.202 kg contains 0.185 kg of water and 1.40×10^−2 kg of ice in thermal equilibrium at atmospheric pressure. If 0.900 kg of lead at a temperature of 417 degrees celsius is dropped into the can, what is the final temperature of the ...

calculate the mass of 100 ppm of CO2 int the atmosphere if the atmospheres mass is 5.3x10^18 kg

Social Studies
1. what post war industry became more important in south carolina due to new roads? a. tourism b. agriculture c. manufacturing d. mining I think its a. please help as soon as possible

PHYSICS DUE SOON
A gas is compressed at a constant pressure of 0.800 atm from 6.00 L to 1.00 L. In the process, 380 J of energy leaves the gas by heat. ____J

PHYSICS DUE SOON
A Carnot engine operates between 170°C and 23°C. How much ice can the engine melt from its exhaust after it has done 4.5 104 J of work?

English
1. Give me a minute. I'll be ready soon. 2. Give me a moment. I'll be ready soon. 3. Give me a second. I'll be ready soon. 4. Wait a minute. I'll be ready soon. 5. Wait a moment. I'll be ready soon. 6. Wait a secone. I'll be ready soon. 7. Just a minute. I'll be ready soon. 8...

I really need help!
Hi, I really need instructions. Can someone please tell me how to make a coordinate plane and a rectangle on the plane in Microsoft Excel 2013 please? I really I need an answer soon because this is due today!!!! Please someone help fast! Thank You :/

English
1. I hope he is running on the playground now. 2. I hope he is studying now. 3. I hope he is playing table tennis now. 4. Is he studying? I hope so. 5. Is he studying (now)? I hope he is studying (now) 6. Is he coming (soon)? I hope so. 7. Is he coming (soon)? I hope he is ...

I am having trouble figuring out this question: Part 1: A long staight wire carries a current due East. This wire creates, at point #1, a magnetic field that is derected at 40 deg below due South. From point #1, the wire is located: 50 deg below due North 50 deg below due ...

Geometry
I am doing 7th grade algebra, and my homework is due by 9:00 and I don't know how to solve this question: Find the measures of supplementary angles 1 and 2 if, A) m angle 1 is less than m angle 2 by 40 degrees B) m angle 1:m angle 2=5:4 Please help soon my class starts at 9:00

letter
How can I write a feel better letter to Miley Cyrus? please help and give me so examples please help HOPE YOU FEEL BETTER [DateDear Miley cyrus I was quite upset to hear that you are feeling ill. However, I am every certain about you and i hope you will feel better in no time...

Hello there i am writing a book and i would like to know how many subjects does an eleventh grader have per day. please reply as soon as possible. thank you very much. P.S: This question is meant to be answered by an american individual due to various reasons.

physics
Calculate the resultant force when four forces of 30N due east 20N due north 50N due West and 40N due south are acted upon a body

math
how do i graph C=15+.10n and C=.25n assign C a vales like 0 and 1 and -1 and solve for n Then assign n similar values and solve for C then plot these poins on a graph.

PHYSICS DUE SOON
In a running event, a sprinter does 5.5 105 J of work and her internal energy decreases by 8.8 105 J. (a) Determine the heat transferred between her body and surroundings during this event. _____J

Physics
PLEASE ANSWER ASAP!!!!!!!!!!!!!!!!!!!!!!! a cross country runner runs 3km due east, 5km due south and 8km south west. what is the runners final displacement and what direction in true bearing form? PLEASE CAN YOU EXPLAIN IT STEP BY STEP

physics
Find the vector sum of a 65 m/s wind acting due east and a 32 m/s wind due west. Give the magnitude and direction please.

Physics
A car travels 3.0km due south and then 4.0km due west.what is it displacement from the starting point. R^2=A^2 B^2 am not sure if dat is the formula please help me

Honors chemistry
i am doing a project for school and i was told to research the alloy of 16 carat gold. I have found all the other information that i need, but i cannot find the melting or boiling point of 16 carat gold! please help soon my project is due tomorrow.

english
23. It is said that communism …. (A) will soon be died. (B) will soon have dead. (C) will soon be dead. (D) will have soon died. i think C

Physics
The initial velocity, the final velocity, and the time are given. Using one of the equations of kinematics, you can calculate the displacement directly. An airplane starts from rest and reaches a takeoff velocity of 60.0 m/s due north in 4.0 s. How far has it traveled before ...

HELP!!!!EMERGENCY WITH THE POEM!!!
do anyone knows a poem named "Instruction for Joining a New Society", which about the desire to become an American? I need this poem immediately!!! Thank you for using the Jiskha Homework Help Forum. If that is the title, I find nothing! If you have either the title or the ...

Science Experiment
Directions: You are a medical researcher who has just "discovered" a new treatment for AIDS. Now you need to design an experiment to test its effectiveness. Using the follwoing questions as guidelines, plan your experiment. 1) What groups will you have in your study? How will ...

Physics
PLEASE ANSWER ASAP!!!!!!!!!!!!!!!!!!!!!!! a cross country runner runs 3km due east, 5km due south and 8km south west. what is the runners final displacement?

Physics- Help! Due soon!
Two packing crates of masses m1 = 10.0 kg and m2 = 5.00 kg are connected by a light string that passes over a frictionless pulley as in the figure below. The 5.00 kg crate lies on a smooth incline of angle 40.0°. Find the acceleration of the 5.00 kg crate. Find the tension on...

Physics
PLEASE ANSWER ASAP!!!!!!!!!!!!!!!!!!!!!!! a cross country runner runs 3km due east, 5km due south and 8km south west. what is the runners final displacement and what direction?

MATH!!!!ASAP!!!
How can i graph this equation by plug in numbers???? x^2-y^2=9 HELP PLZ!!!!!!THX ALOT!!!! Assign numbers to x and solve for y then put them in a graph: let's say x is -3 Then 9=y^2+9 y^2=0 y=0 Ok now x= -4 16=y^2+9 y^2=5 y=2.236 Also you can assign y a number and solve for x ...

physics
assign units and determine net forces in a situation.

physics
a boat has a mass of 6800 kg. its engine generate a drive force of 4100 N, due west, while the wind exerts a force of 8000 N, due east, and the water exerts a resistive force of 1200 N due east. what is the magnitude and direction of the boats accelerations? (answer 0.309 m/s^...

A charge of -3.00 µC is fixed at the center of a compass. Two additional charges are fixed on the circle of the compass (radius = 0.135 m). The charges on the circle are -3.20 µC at the position due north and +5.00 µC at the position due east. What is the magnitude and ...

chem due soon
At temperatures above 0°C, what is the sign of the change in free energy for the conversion of liquid water to ice? A. Positive B. Zero C. Negative D. Not known

Physics
A magnetic field increases from 0 to 0.09 T in 3.0 s. How many turns of wire are needed in a circular coil 20 cm in diameter to produce an induced emf of 7.5 V? Please help soon.

essay
I am writing an essay on what freedom means to me. I'm stuck I and need help as soon as possible. Due tomorrow at 8

HSM 240
I have a final project due pretty soon. It asks what the demographics are. What does demographics mean?

statistics
government data assign a single case or each death that occurs in the u.s. the data show that the probability is 0.45 that a randomly chosen death was due to cardiovascular disease, and 0.22 that i was due to cancer. Suppose a docote checked the cause of death of 2 randomly ...

PHYSICS DUE SOON
In each cycle of its operation, a heat engine expels 6,100 J of energy and performs 1,300 J of mechanical work. (a) How much thermal energy must be added to the engine in each cycle?_____J (b) Find the thermal efficiency of the engine.____%

Medical Information Management
John Doe, a new patient, is assigned a medical number that has already been assigned to another patient. With a unit numbering system, how is this corrected? A. Both patients keep the same number. B. Move both patients documentation forward to the new number. C. Cancel both ...

physics
a man walks 5 km due North east, then 4 km due 30 degree N of E and finally 60 degree due S of E for 2 km. What is his final displacement with respect to his starting point ?

computer science
Declare a structure whose tag name is Emp and that contains these fields (in the following order): a double field named d, a character pointer named str, and an array of eleven integers named arr. * I'm good till here. In addition, declare a array named emp of 30 of these ...

Physics
a powerboat heads due northwest at 15 m/s relative to the water across a river that flows due north at 4.8m/s what is the velocity of the motorboat and angle due west of north

English
1. I hope he gets well soon. 2. I hope he gets better soon. 3. I hope he will get well sone. 4. I hope he will get better soon. 5. I hope for him to get well soon. ======== Are they all grammatical and have the same meaning? Which ones are commonly used? What about #5? Is #5 ...

psychology
My instructor assign me of one the "senses." This the one my instructor had assign to me= “The Skin Senses”: Which includes Touch, Pressure, Temperature, and Pain. The instruction is to (Briefly describe how The Skin Senses work and its importance. Discussing the impact of...

English
1. He has lived in the city for 10 years. 2. He lived in the city for 10 years. 3. He has gone to LA. 3-1. He went to LA and he lives there now. (Are they all grammatical? Does #3 mean 3-1?) 4. He went to LA, but soon came back. 5. He went to LA, but soon he came back. 6. He ...

physics
An animal-rescue plane ﬂying due east at 40 m/s drops a bale of hay from an altitude of 73 m . The acceleration due to gravity is 9.81 m/s^2. If the bale of hay weighs 177 N , what is the momentum of the bale the moment it strikes the ground? Please help!

The electrons in the beam of a television tube have a kinetic energy of 2.10 10-15 J. Initially, the electrons move horizontally from west to east. The vertical component of the earth's magnetic field points down, toward the surface of the earth, and has a magnitude of 5.00 10...

Assign each letter and a blank space to a number as shown by the alphabet table. 0=_ 1=A 2=B 3=C 4=D 5=E 6=F 7=G 8=H 9=I 10=J 11=K 12=L 13=M 14=N 15=O 16=P 17=Q 18=R 19=S 20=T 21=U 22=V 23=W 24=X 25=Y 26=Z use matrix [1 -2] -3 7 and encode the phrase "One Question to go" o=15 ...

physics
A ship at sea is due into a port 600 km due south in two days. However, a severe storm comes in and blows it 200 km due east from its original position. How far is the ship from its destination?

Medical coding 2
Physician performed an aspiration thoracentesis on a patient in observation status in the hospital. The patient has advanced lung cancer with malignant pleural effusion. Later the same day, due to continued accumulation of fluid. the patient was returned to the procedure room ...

Math - Measurement Pink Wk Bk (PLZZZ HELP!)
4. 3 1/2 T = ______ ib 5. 32 oz = ________ ib 7. _____ ib = 7 T Solve: 10. 12 oranges weigh 2 1/4 pounds. How many ounces is this? __________ PLEASE HELP, I really don't get this. Please Help!!!! Thank You!!! :) PS: For homework, we have to do p. 6 in our pink wk bk (every ...

Math
is 4+2=7 i need to know soon so answer me soon

Physics
A jogger travels a route that has two parts. The first is a displacement A of magnitude 2.70 km due south, and the second involves a displacement B that points due east. What is the direction of A + B relative to due south? ° What would be the direction of A - B relative to ...

A duck has a mass of 2.8 kg. As the duck paddles, a force of 0.05 N acts on it in a direction due east. In addition, the current of the water exerts a force of 0.15 N in a direction of 60° south of east. When these forces begin to act, the velocity of the duck is 0.12 m/s in ...

physics
A jet makes a landing traveling due east with a speed of 100 m/s. If the jet comes to rest in 15.0 s, what is the magnitude and direction of its average acceleration? m/s2 due west due east

statistics
In one history class, 34 students took an exam. The mean of the exam was 52 with a standard deviation of 13. If the instructor is going to assume data are normally distributed and assign grades on a curve, then she will assign an A to the top 10% of the class, B's to the next ...

A 10 kg ball moving due west at 2m/sec collided with a 4kg ball that is moving due east at 3m/sec. you determine that immediately after the collision the 10 kg ball is moving due west at .57 m/sec. a) this probably is a totally elastic collision b) this definitely is NOT a ...

A 10 kg ball moving due west at 2m/sec collided with a 4kg ball that is moving due east at 3m/sec. you determine that immediately after the collision the 10 kg ball is moving due west at .57 m/sec. a) this probably is a totally elastic collision b) this definitely is NOT a ...

Physics
The location of a car at times t1 and t2 is given by the position vectors r1= 15km due east + 20km due north (time t1) and r2= 13km due west + 25km due north (time t2) The units of distance are kilometers a. What is the magnitude l^rl of the displacement? b. What angle does ...

A plane flies due north (90° from east) with a velocity of 100 km/h for 3 hours. During this time, a steady wind blows southeast at 30 km/h at an angle of 315° from due east. After 3 hours, where will the plane’s position be relative to its starting point? Show your work.

A person walks 28.2◦ north of east for 3.33 km. Another person walks due north, then due east to arrive at the same location. How far due north would this person walk? How far would this person walk due east?

physics
A car moves 26km due east then 14km due north. It then turns along a path running north east with 15 km,then 17 km due west.If the time for the journey is 2 hrs,find the average velocity?

LA a book summary help
i need to do a book summary about the last apprentice. but i don't know what to write.i am like lost right now while trying to figure out what to write.i need a short summary. its due tommorow. and i need it done by 10 tonight.i forgot the important things that happen in the ...

English 12
Which character is described in these lines? (10 points) Lord of the Scyldings, this single petition? Not to refuse me, defender of warriors, Friend-lord of folks, so far have I sought thee, That I may unaided, my earlmen assisting me, This brave-mooded war-band, purify Heorot...

English
1. When is the report due? It is due on Monday. 2. When is the book due? It is due on March 10th. (Are the short dialogues correct?) 3. What are you saying? 4. What are you speaking? 5. What are you talking about? (Are the three commonly used and grammatical?)

Physics
A person walks 25.0 degrees north of east for 3.10 km. How far would another person walk due north and due east to arrive at the same location? I don't understand how I could calculate the needed distance accuratly. I used 3.1*sin(25) + 3.1*cos(25). But I still think I'm ...

chemistry due soon
Which reaction shows that the enthalpy of formation of CS2 is Hf = 89.4 kJ/mol? A. C(s) + 2S(s) CS2(l) + 89.4 kJ B. C(s) + 2S(s) + 89.4 kJ CS2(l) C. C(s) + 2S(s) + 89.4 kJ CS2(l) + 89.4 kJ D. C(s) + 2S(s) CS2(l) I think the answer is a or b

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 jet makes a landing traveling due east with a speed of 100 m/s. If the jet comes to rest in 15.0 s, what is the magnitude and direction of its average acceleration? due west or due east? How can I solve this question? You don't have to give me the answer but how you derive ...

A force, F1 of magnitude 2.0N and directed due east is exerted on an object is F2=2.0N due north. What is the magnitude and direction of a third force, F3, which must be exerted on the object so that the resultant force is zero? I am not sure how to start this problem!! Thank ...

lang. arts
We will soon be going to computer class. Is "soon" the adverb and "going" the word it modifies? Thank you.

Physics -Compton Scattering
QUESTION 1: Calculate the maximum increase in photon wavelength that can occur during Compton scattering. = ??? pm QUESTION 2: What is the energy (in electron volts) of the smallest-energy x-ray photon for which Compton scattering could result in doubling the original ...

Physics
1) If = 2.0 cm, due E and = 5.0 cm, due W Determine: a) R = -A + 2B b) V = - 2A - B c) F = 3A - B My Answers R= 8, V= -1, F= 1 Is this correct and how do you know when direction it's going to be?

working in a pharmacy
when a sale is lost a.forget it as soon as possible b.it is usually the customers fault c.it is usually the assistants fault d.the loss may have been due to the customer,the assistant,or the product my answer is d

English
I NEED HELP PLEASE!!! I need a 5 paragrph mini theme on " Pizza Is The Perfect Meal". For each paragrphs I need 2 references. PLEASE, PLEASE, HELP SOON.

physics
In Fig. 12-51, uniform beams A and B are attached to a wall with hinges and loosely bolted together. Beam A has length LA = 2.55 m and mass 49.0 kg; beam B has mass 69.0 kg. The two hinge points are separated by distance d = 1.86 m. In unit-vector notation, what is the force ...

Physics
A 1500kg car traveling at a steady speed of 20 m/s initially due northwest round a corner so that after 10s, it is traveling due northeast. What is the magnitude and direction of the net force that must be acting on the car at the instant it is traveling due north?

Physics
A 1300 kg car traveling at a steady speed of 15 m/s initially due northwest round a corner so that after 10s, it is traveling due northeast. What is the magnitude and direction of the net force that must be acting on the car at the instant it is traveling due north?

french
Je commencerai aussitot que tu arrivera. I get the first part is I will start as soon as....but why for arriver, you need to use le future simple? "I will start as soon as you will arrive"?

English
1. You will soon be friends with him. 2. You will soon make friends with him. -------------- Are both grammatical? Is there any difference between them?

Physics
someone please answer these Physics Q answers no explanation 1 What is the opposite force to gravity 2 an example of a contact force 3 an example of a non-contact force 4 What effect does ‘mass’ have on inertia 5 two examples of forces that could slow an object down 6 two ...

Physics
Judy walks a certain distance due north, then walks twice as far due west. At the end of her trip, the straight-line distance from her starting point to her final position is 112m. a) What is the length of each leg of the trip? b) What is the direction of her total ...

AP Statistics
A researcher wishes to compare the effects of 2 fertilizers on the yield of a soybean crop. She has 20 plots of land available and she decides to use a paired experiment — using 10 pairs of plots. Thus, she will: a. Use a table of random numbers to divide the 20 plots into ...

dog behavior
please check my answer thanks so much :) When teaching the leave it command, when should you give the dog a reward? A. While its chewing the forbidden object so it will leave it and take the treat instead B. The instant it leaves the forbidden object C. As soon as it comes to ...

physics
a body displaced 12m due to east then 5m due to north then 9m vertically upward what is the resultant displacement?

1. Pages:
2. 1
3. 2
4. 3
5. 4
6. 5
7. 6
8. 7
9. 8
10. 9
11. 10
12. 11
13. 12
14. 13
15. 14
16. 15
17. Next>>

Post a New Question