physics please HELP !
130,813 results, page 70

Math :(
Please help me with this. Can you explain to me how to find the answer? Multiply 3.8*10^8 by 7.2*10^3, leave your answer in a scientific notation. 2.736*10^4 2.736*10^5 2.736*10^6 27.36*10^5 Honestly, I don't the answer to the question So please forgive the wrong answer if I ... 
physics
A wheel's uniform angular acceleration is constant. Initially its angular velocity is zero. During the first 1.0 s time interval, it rotates through an angle of 90.0°. (a) Through what angle does it rotate during the next 1.0 s time interval? (b) Through what angle during the... 
math30
A sequence has a first term of 24 and every other term is one half of the previous term. Find a recursive formula that defines this sequence. The answer of this question is: an=an1*1/2 Somebody can help me and let me know why is 1/2 on the formula? please please!!! I am not ... 
U,S History
Please help me! I am writing this article. It is an article prior to the attack on pearl harbor. I have to choose if 1) the u.s should enter the war and help the allies or 2) The U.S should remian neurtral in world affairs and stay out of the war. I chose number 2 and I need ... 
Maths
Please help with these questions: (please show how to do) 1. How many differently shaped rectangles, with positive integer dimensions, have a perimeter equal to their area? 2. Let x be any number less than one, and let y be any number greater than one. S= x + y P= xy Prove ... 
Social Studies
What percentage of the world's earthquakes and active volcanoes occur on the "Ring of Fire"? 1) *10% 2) *20% 3) *50% 4) *80% My Answer. Is It Correct? Please Be Honest. #4: 80% The name of Earth's single, huge continent from over 250 million years ago is 1) *Megaland. 2) *... 
History
The questions below I am asking just to get an idea of what to write. 1. Why was the migration of the Aryans to India significant? 2. What do many of the political conflicts in South Asia have in common? 3. Why is the population of South Asia a concern for the region? Please ... 
Social studies
Anyone Please help me cause i am out of ideas and i have no more ways to turn to help me get the answers to this test please i need this grade I have unsupportive parents and ms sue i appreciate everything u do but dont answer if u arent going to goive me answers if anyone ... 
Math
Please help me with the following by checking my answer. The length of the hypotenuse of an isosceles right triangle is √6 inches. How long, in inches, are the legs of the triangle? A. 3 B. 6 C. √3  (This is my answer.) D. √6 I am not sure on my answer, ... 
physics
Fred the otter climbed to the top of an inclined plane. His friend, Giselle the giraffe, suggested that he was so small that gravity would ignore him and he would be unable to slide down. "On the contrary", said Fred, "Since this slope makes an angle of 48.4 degrees with the ... 
physics
Fred the otter climbed to the top of an inclined plane. His friend, Giselle the giraffe, suggested that he was so small that gravity would ignore him and he would be unable to slide down. "On the contrary", said Fred, "Since this slope makes an angle of 48.4 degrees with the ... 
Acceleration physics
1. A sprinter finishes the race with a velocity of 8.9 m/s. the sprinter accelerated to a stop at a rate of 2.7 m/s2. how long did it take the sprinter to come to a stop? 2. A cycllist starts from rest & reaches a velocity of 18 m/s southwest in 3.8 seconds. what was the ... 
SOCIAL STUDIES
I need to know about current events happening in France. Please list some current events or give me some helpful sites. Thanks!!!:):):):):):):) (GuruBlue the site you gave me didn't work instead it brought me to google so please try giving me HELPFUL sites)Thanks!!!!!!!! 
HISTORY
Respond by explaining how the Berlin Wall did or did not reflect the policy of containment. Berlin Wall, U.S. Response A. Definition/description B. Background information/rationale C. Why it is or isn’t part of the policy of containment Please help! Please don't include ... 
math please help imedietely
The icecream cone wrapper is having the flat side on the top and the point at the bottom. Draw the shape of this icecream cone wrapper when it is slit from the edge to the center point and flattend out. Please tell answer and explain 
chemistry
at a given temperature and pressure 20ml of the gas diffuses through a porous membrane in 5 seconds. calculate the volume o carbon dioxide which diffuses in 10 seconds if the vapour density of the gas is 11 a)10√(2) b)20/√(2) c)40√(2) d)10/√(2) correct ... 
physics
A monoatomic ideal gas has Cp= 5R/2 a) four moles of the gas undergoes a process in which the temperature of the gas increases from 300 K to 500 K while the pressure is kept constant at 2.00 x 105 Pa. What is the change in the internal energy of the gas? b) Four moles of the ... 
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 ... 
Physics
I am totally new to physics. We are working on summation of moments and I just am not grasping this. I know the formular is M=dF, but his does not help me. I get confused about the middle of settig of euation. I am never sure which distance I should be using. Is there a step ... 
physics......PLEASE HELP!!
A steam engine absorbs 1.98*10^5 J and expels 1.49*10^5 J in each cycle. Assume that all of the remaining energy is used to do work. a. What is the engine's efficiency? b. How much work is done in each cycle? If a gasoline engine has an efficiency of 21 percent and loses 780 J... 
chemistry/physics
i need to determine how many protons, neutrons, and electrons are in these but they arent just straight elements tehy are singly ionized hydrogen (positive) doubly ionized hydrogen(positive) and singly ionized oxygen (negative) these are my answers, respectively 1. one proton ... 
Physics
In solid sodium chloride (table salt), chloride ions have one more electron than they have protons, and sodium ions have one more proton than they have electrons. These ions are separated at about 0.28 nm. Calculate the electrostatic force between the sodium ion and the ... 
Physics
In solid sodium chloride (table salt), chloride ions have one more electron than they have protons, and sodium ions have one more proton than they have electrons. These ions are separated at about 0.28 nm. Calculate the electrostatic force between the sodium ion and the ... 
Physics
In solid sodium chloride (table salt), chloride ions have one more electron than they have protons, and sodium ions have one more proton than they have electrons. These ions are separated at about 0.28 nm. Calculate the electrostatic force between the sodium ion and the ... 
Physics
In solid sodium chloride (table salt), chloride ions have one more electron than they have protons, and sodium ions have one more proton than they have electrons. These ions are separated at about 0.28 nm. Calculate the electrostatic force between the sodium ion and the ... 
Math (PLEASE HELP!!)
Through how many degrees does the hour hand move... 1. In 3 hours? 2. In 2 hours?___________ 3. In 1 hour?___________ 4. In 1/2 hour?____________ 5. In 10 minutes?___________ Please Help!! Thank You!! 
Math please explain!!
A student got 80 percent problems correctly which is 32 problems correct. how many problems are they in total? I got 40 in a page but it did not explain can you PLEASE EXPLAIN!!!! 
physics
A pigeon in flight experiences a force of air resistance given approximately by F=bv2, where V is the flight speed and B is a constant. A) In terms of SI units, what are the units for the constant "b"? B) What is the largest possible speed of the pigeon if its maximum power ... 
Physics
Please show how you got the answers, not just the answers. A 40.0 N force stretches a vertical spring 0.250 m. (A) What mass must be suspended from the spring so that the system will oscillate with a period of 1.0 s? (B) If the amplitude of the motion is 0.050 m and the period... 
PhysicsPlease help
Have 2 identical cars each 1000kg at a speed of 20m/s. The yellow car is stopped by car's brakes in 25m while green car is stopped by concrete barrier in 1.2m. Drivers have same mass(70kg) Driver of yellow car is stopped by seatbelt in 0.150 sec. Compare impulse they received ... 
physics 12U
A driver parks his car on a hill but accidently leaves it in neutral. The car starts from rest and accelerates down the 45 m long hill. It take the car 12.3 seconds to reach the bottom of the hill. a) What is the final velocity of the car at the bottom of the hill? (ANS: 7.3 m... 
physics (PLEASE READ)
referring to the previous problem, if you had entered the same sandy patch with a lower speed, say 7.0 m/s, would the patch have the same effect on your speed, say 7.0 m/s, would the patch have the same effect on your speed? that is, assuming the sandy patch causes the same ... 
Math
If you are standing near the edge of the top of a 200 feet building and throw a ball vertically upward it will be modeled by the function s(t)=16t^2+64t+200 where s(t) is the ball's height above ground in feet and t is seconds after the ball was thrown. A) When does the ball ... 
Math
If you are standing near the edge of the top of a 200 feet building and throw a ball vertically upward it will be modeled by the function s(t)=16t^2+64t+200 where s(t) is the ball's height above ground in feet and t is seconds after the ball was thrown. A) When does the ball ... 
physics
A shuffleboard disc has a mass of 250g. The coefficient of friction between the disc and the floor is .60. A player pushes the disc applying a horizontal force of 5.0 N for .35 s. How much does the disc weight? What is the frictional force between the disc and the floor. What ... 
physics
A shuffleboard disc has a mass of 250g. The coefficient of friction between the disc and the floor is .60. A player pushes the disc applying a horizontal force of 5.0 N for .35 s. How much does the disc weight? What is the frictional force between the disc and the floor. What ... 
physics help!
A small 520gram ball on the end of a thin, light rod is rotated in a horizontal circle of radius 1.5 m. Calculate the moment of inertia of the ball about the center of the circle. Then calculate the torque needed to keep the ball rotating at constant angular velocity if air ... 
Physics
One end of a cord is fixed and a small 0.470kg object is attached to the other end, where it swings in a section of a vertical circle of radius 2.50 m as shown in the figure below. When θ = 21.0°, the speed of the object is 4.70 m/s. At this instant, find each of the ... 
As physics
Image with a flat horizontal line with a curve on top (beg curve: X, top middle curve: Y, End bottom curve: Z) Describe how the vertical component of the velocity of the water varies form point X to point Z? Mark scheme Answer: decreases from x to y DON’T GET I thought it ... 
Health insurance please check answer
please check my answer thank you very much :) Which health insurance program is designed to complement the retirment survivor , and disability insurance enacted under the Title II of the Social Security Act? I think the answer is Medicare 
MATH PLEASE SHOW WORK
Three consecutive odd intergers are such that the sum of the squares of the first two integers is 54 more than 20 times the third integer. Determine the three integers. Please help and show all work thank you SHOW WORK SO I UNDERSTAND HOW TO DO IT THANK YOU 
physics vs. Chem
Doesnt physics seem to be harder than chem? Anyone? 
math
beads for sale: 12 cents for 15. Write an equation relating the cost (c) and the number of beads (n0 for the beads. Katie or Halida or whoever, Please note that we don't do students' homework for them. Our tutors try to give you the information to help you complete your ... 
Physics PLEASE
I'm trying to solve this problem Calculate (a) how long it took King Kong to fall straight down form the top of the Empire State Building (380 m high), and (b) his velocity just before "landing". My teacher said try and rearagne this equation for t X = Xo + Vo t + 2^1 a t^2 ... 
Physics Please check my answers
1. Complete reflection is the special case of refraction at an angle of 180. True. False. 2. A resonant frequency is the same as a natural frequency. True. False. 3. For a standing wave, the number of segments is an integer equal to the number of halfwavelengths. True. False... 
repost physics E&M please
A battery with EMF 90.0 V has internal resistance R_b = 8.68 Omega. What is the reading V_v of a voltmeter having total resistance R_v = 485 \Omega when it is placed across the terminals of the battery? Express your answer with three significant figures. V_v =88.4V This is the... 
Physics
What is the factor of safety of a steel hanger having an ultimate strength of 550.000MPa and supporting a load of 64000.000N. The steel hanger in question has a cross sectional area of 7.600cm^2 ANS= Round to 3 decimal places Safety factor = design load/ load = 550.000MPa = ... 
Physics
What is the factor of safety of a steel hanger having an ultimate strength of 550.000MPa and supporting a load of 64000.000N. The steel hanger in question has a cross sectional area of 7.600cm^2 ANS= Round to 3 decimal places Safety factor = design load/ load = 550.000MPa = ... 
prefixes please help thax:]
these words wont show the right def. when i type it in the dictonary search bar **but i do no u ladys can not do my work for 4 sure But really need help badly i have 1130 to do and its 9:30 please help anyone thax:] *prefixes* ante arch bi demi equi extra non omin ortho semi... 
English
Can you please check if everything is OK, please? Thank you 1) At first, the three witches prophesy to Macbeth that he will be Thane of Cowdor and then king of Scotland. In the fourth act they tell Macbeth to beware of Macduff. 2) They also tell him that no man born of woman (... 
PHYSICS HELP PLEASE!!!
A block of mass 2.62 kg is kept at rest as it compresses a horizontal massless spring(k = 141 N=m) by 15.3 cm. As the block is released, it travels 0.627 m on a rough hori zontal surface before stopping. The acceleration of gravity is 9.8 m/s2 :Calculate the coe±cient of ... 
Physics
Can you please provide me a starting point for these two questions Question One: Three charges are located on the +x axis as follows: q1 = +26 µC at x = 0 m, q2 = +13 µC at x = +2.0 m, and q3 = +42 µC at x = +3.5 m. (a) Find the electrostatic force (magnitude and direction... 
math help please
two cards are dealt in succession from a standard deck of cards. what is the probability that the second card is red give that the first card was a heart. so i do p(R/H), then i know you go R*H/H. but how do i get the probability please explain! thanks. if 2 dice are rolled, ... 
Calculus! Please Help!!
The dollar value of a stock x weeks after a change in management is give by the function: f(x) = x²14x+30ln(x+1)+32, 0≤x≤7. Find the intervals when the value of the sock was increasing and also determine the maximum value of the stock during this time. PLEEASEE ... 
Urgent need help on chem please someone
A researcher explores the ideal gas equation. He measures the pressure of a system at different temperatures ( keeping the volume and moles of the gas constant) and creates a plot of P versus T. What is the slope of the line that results if the volume is 1.0L when 1.0 mol of ... 
physics
An ocean liner is traveling at 5m/s. A passenger on deck walks towards the rear of the ship at a rate of 4m/s. After walking 30 meters, he turns right and walks at a rate of 4m/s to the rail, which is 12 meters from his turning point. What is his velocity relative to the water... 
Physics
An ocean liner is traveling at 5m/s. A passenger on deck walks towards the rear of the ship at a rate of 4m/s. After walking 30 meters, he turns right and walks at a rate of 4m/s to the rail, which is 12 meters from his turning point. What is his velocity relative to the water... 
Physics(Please check)
A car (mass = 1140 kg) is traveling at 27.3 m/s when it collides headon with a sport utility vehicle (mass = 2380 kg) traveling in the opposite direction. In the collision, the two vehicles come to a halt. At what speed was the sport utility vehicle traveling? I did 1140(27.3... 
Psycholofgy
Please help! I'm having a very hard time with this question. Can someone please tell me if this the correct answer. I choose A Jake finds guns attractive and desirable, while Arthur feels that guns are threatening and destructive. Their differing feelings toward guns represent... 
english (grammar) HELP!!!
Identify the sentcence that is not punctuated correctly. A. "Did she say 'no more tickets will be sold'?" Ben wondered. B. Lucy begged,"Just don't say, "Lets do lunch,"please!" C."Why did he call you 'bug' just then? Is that your nickname?" she asked. D. "Wait," she called. ... 
Physics
Kenny Klutz drops his physics book off his aunt's high rise balcony. It hits the ground below 1.5s later. a. With what speed does it hit? b. How high is the balcony? (Ignore the air drag) 
Physics
Jacob is working on his physics portfolio and stands on a 0.45m high step. If Jacob’s mass is 103kg, what is his potential energy while on top of the step? Givens: Unknown: Equation: Substitute: Solve: 
AP Physics C
An earth satellite, the mass of which is 1000 kg, is in a circular orbit 1000 km above the surface of the earth. It is desired to transfer it to a circular orbit 1500 km above the surface. The amount of work that must be done to accomplish this is A. 3.43 * 109 J B. 1.71 * 109... 
MathDecimals
Please match each number with its best example. Some values will need to be changed into a decimal format. A. Recurring Decimal B. Mixed Number C. Nonrepeating Decimal D. Finite Decimal E. Decimal Examples: ½ 5½ π 0.375 ⅓ I think 5½ is B and ⅓ is A, but I ... 
Health care please check my answer
Please check my answer thank you The lateral ports were removed. Where would these ports be located ? A. Toward the back B. Toward the head C. Farthest form the median D. Toward the front My answer is B 
Atomic physics
5)a. Electrons accelerated by a potential difference of 12.23 V pass through a gas of hydrogen atoms at room temperature. Calculate the wavelength of light emitted with the longest possible wavelength. b. Calculate the wavelength of light emitted with the shortest possible ... 
calculus
The circumference of a sphere was measured to be 76 cm with a possible error of 0.2cm. 1. Use differentials to estimate the maximum error in the calculated surface area. Please round the answer to the nearest tenth. 2. What is the relative error in the calculated surface area... 
history
can someone please help me find this political cartoon i'm looking for, it's about women's rights. it has ARE NOT THE WOMEN HALF THE NATION? written on the bottom and the top says A GOVERNMENT OF THE PEOPLE BY THE PEOPLE FOR THE PEOPLE there are two women and one man in the ... 
Science please help
Some of the water flows over the dam and is converted to energy, some water evaporates into the air. What spheres does the water, or hydrosphere interact with this example? a. Geosphere and atmosphere B. Atmosphere and biosphere C. Crysophere and atmosphere D. Asthenosphere ... 
Chemistry (please Help!!)
determine which experiences a lower effective nuclear charge. using words and/ or drawings explain why. A) an electron in a 2s or an electron in a 2p B) a valence electron on sulfure or a vance electron on silicon C) a valence electron on chlorine or a valence electron on ... 
pHYSICS
Packages dropped by planes in the olden days didn't have onboard guidance or propulsion systems such as are found today. The path of the package was determined by the initial veloctiy (of the person that dropped that the package) and the acceleration due to gravity. If a plane... 
physics
please check these; a container of gas is at pressure of 3.7*10^3 Pa. How much work is done by the gas if its volume expands by 1.6 m. 5.92 * 10^5 A 0.10 kg piece of copper at an initial temperature of 95degC is dropped into 0.20 kg of water contained in a 0.28 kg aluminum ... 
physics
please check these; a container of gas is at pressure of 3.7*10^3 Pa. How much work is done by the gas if its volume expands by 1.6 m. 5.92 * 10^5 A 0.10 kg piece of copper at an initial temperature of 95degC is dropped into 0.20 kg of water contained in a 0.28 kg aluminum ... 
Physics
Please show me how to work the following problems. 1) A cyclist whose mass is 48 kg turns a corner with a radius of 30 m at a speed of 25 m/s. A) What is the magnitude of the cyclist's acceleration? B) What is the magnitude of the net force acting on the cyclist? 2) A rock is ... 
HISTORY
4. The United States cut off sales of oil to Japan after the A. Japanese attack on Dutch Indonesia. B. Japanese attack on Pearl Harbor. C. Japanese occupation of southern Indochina. D. Japanese occupation of Hong Kong. I chose the answer B. please can you please check my answer. 
Algebra SOLVING LINEAR EQUATIONS AND INEQUALITIES
Please help Im am Grade 5 and my teacher is letting me do this. 1. Solve the solution by using elimination and substitution 3/x  2/y = 14 6/x + 3/y = 7 2. Solve by eliminating x (this is solving 3 linear equations) then substitute to the other two equation x + y + 5z =2 (1) ... 
BOBPURSLEY PLEASE CHECK BELOW!
please check below! patience. 
Spanish QUestions LOOK DOwn please!!!
PLease look down. Thank you. 
math(Please please help!!!)
Solving log functions 1) log x + log(x6) = log 7 
Math Elimination method
PLEASE HELP!!!!!!!!!! Solve by the elimination method 6x  9y= 7.5 7y  2x= 4.5 Please help!!! 
PLEASE HELP
PLEASE ANSWER THE FRACTION 14 OVER 15  THE FRACTION 1 OVER 2. HURRY! 
language
are these right? 1) a 2) d 3) c 4) a? please correct ms sue if they are not right correct them please and thank you!!! 
Algebra, please check my answer!
Simplify. mn^4/p^0 q^2 a) mq^2/n^4 b) mp/n^4 c)mn^4q^2p^0 d)q^2/mm^4 **** ****= my answer. Please check this for me! 
physics
file:///Users/haifaalajmi/Desktop/Screen%20Shot%2020180115%20at%201.08.42%20AM.png file:///Users/haifaalajmi/Desktop/Screen%20Shot%2020180115%20at%201.08.23%20AM.png please see the links because this question includes a diagram and I don't know how to paste a picture here ... 
physics please check
a. Two sticks are rubbed together to start a fire. b. A firecracker explodes. c. A redhot iron bar is set aside to cool. In which of the situations listed above is energy being transferred as heat to the system in order for the system to do work? I would say A & B. In which ... 
Math
Please help me and show an understanding please, so I see how to figure them out. Lee deposited $28,000 in an interestbearing checking account that earns 3.5% interest compounded daily. Find the amount after 68 days. a.$183.16 b.$28,180.46 c.$28,183.16 d.$180.46 On April 10th... 
Science
Can you please tell me about what the difference between a dilute and a concentrated souloution is? Can you please tell the difference between a acid and a base? What are their similarities and their differences? How can we know when somehting is a acid and when something is a... 
Quick English
Which of these make more sense/sound better? Please remove all information with regards to my account from your servers. Please remove all information related to my account from your servers. Thank you. 
math urgent please
i think I know the answer to this question but could u please explain it to me how much smaller is the digit in the thousands place than the digit in the ten thousands place in the number 55,512 is the answer 10. could u help explain it 
@ elena  intro to physics
I posted this question earlier and thank you for respnding, but the answer you give me was incorrect. I try looking at hw you solve and cant find the mistake but when when I check your answer it said it was wrong. Can you please look over it again, I greatly appreciate it a ... 
Criminal Justice
Can someone please point me to a website that is free that has court cases on it? My professor wants us to find the original trial courts for these people: 1. Orenthal James Simpson 2. Theodore Kaczynski 3. Louise Woodward 4. Timothy James McVeigh 5. Lyle Menendez 6. David ... 
*Math*
139 of CanTexh Supply's employees belong to a union; the remaining 248 employees are not union members. What percent of employees are in the union? (((please help, i have test tomorrow the first thing in the morning!!!:S))) i tried it myself but can u check if its rite if not ... 
math
Megan factored the expression (12x^2+52x35) as (2x+5)(6x7) but when Jacob applied FOIL principle and multiplied out (2x+5)(6x7) he got (12x^2+44x35),thus megan's solution does not appear to check please help megan to understand better.Explain your reasoning and ... 
math
Megan factored the expression (12x^2+52x35) as (2x+5)(6x7) but when Jacob applied FOIL principle and multiplied out (2x+5)(6x7) he got (12x^2+44x35),thus megan's solution does not appear to check please help megan to understand better.Explain your reasoning and ... 
algebra
Megan factored the expression (12x^2+52x35) as (2x+5)(6x7) but when Jacob applied FOIL principle and multiplied out (2x+5)(6x7) he got (12x^2+44x35),thus megan's solution does not appear to check please help megan to understand better.Explain your reasoning and ... 
algebra
Megan factored the expression (12x^2+52x35) as (2x+5)(6x7) but when Jacob applied FOIL principle and multiplied out (2x+5)(6x7) he got (12x^2+44x35),thus megan's solution does not appear to check please help megan to understand better.Explain your reasoning and ... 
algebra
Megan factored the expression (12x^2+52x35) as (2x+5)(6x7) but when Jacob applied FOIL principle and multiplied out (2x+5)(6x7) he got (12x^2+44x35),thus megan's solution does not appear to check please help megan to understand better.Explain your reasoning and ... 
Science
Helloo.. i got a worksheet about compounds,elements andnumber of elements. it tells me to list the elements and number of atoms found in each of the compounds and i don't understand how to do get the elements and the # of atoms in the equation.. PLease help me..!!! Common Name... 
AlgebraTrig Please Help ASAP
A balloon isin the vertical plane of two consecutive milestones of a road. The angles of depression of the stones as viewed from the balloon are 15 degrees and 17 degrees. Find the height of the balloon if (a) the stones are on opposite sides of the balloon, (b) the stones are... 
English A little help please
I am doing my plot summary on the Book Royally Jacked and I really want to know the significance of this title towards the book. I can't seem to explain it well. Royally stands for the royal family in this book whom Valerie and her dad are staying with. I just can't seem to ...