physics please HELP !
129,881 results, page 56

Physics
Would someone check this please? A circular loop of wire of radius 0.10 m and of resistance 2.0 ~ 10−3 ƒ¶ is in a region where there is a uniform magnetic field B. The field is at 30‹ to the normal to the plane of the wire loop as shown in Figure 3. The magnitude... 
Physics
Hi! Need help please, thank you. Question:In a model AC generator, a 498 turn rectangular coil 14.0 cm by 21 cm rotates at 124 rev/min in a uniform magnetic field of 0.65 T. (a) What is the maximum emf induced in the coil? ___ V (b) What is the instantaneous value of the emf ... 
physics
REPOST PLEASE HELP a rock is thrown horizontally with a speed of 17 m/s from a vertical cliff of height 34 m. A I solved for t=2.63 BHow far will it land from the base of the cliff? im using x=xo+vox*t i get 6.46 and it is wrong. What am I doing wrong? CWhat is the ... 
physics
When the thigh is fractured, the patient's leg must be kept under traction. One method of doing so is a variation on the Russell traction apparatus. (See the figure.) Please place period in place of (dot) oi53(dot)tinypic(dot)com/2a0b7yx(dot)jpg If the physical therapist ... 
physics  please hellp
I need help with two questions: 1) An object can only have a charge that is an integral multiple of the charge on the ___. Am I correct with "electron" as the answer? or possibly elementary charge? 2) The difference in potential between any two points in a field is the ___ ... 
Physics(Please check)
A gas, while expanding under isobaric conditions, does 660 J of work. The pressure of the gas is 1.40 x 105 Pa, and its initial volume is 1.70 x 103 m3. What is the final volume of the gas? Would I multiply the two values? W = p*dV = p(Vf  Vi)for isbaric p is constant. ... 
Physics PLEASE HELP
An interstate highway has been built though a poor neighborhood in a city. In the afternoon, the sound level in a rented room is 114.0 dB as 172 cars pass outside the window every minute. Late at night, the traffic flow is only 7 cars per minute. (b) What is the sound ... 
Physics(Please help)
1) two hotair balloons are 48.2 m and 61.0 m above the ground. A person in the left balloon observes that the right balloon is 13.3° above the horizontal. What is the horizontal distance x between the two balloons? The left balloon is 48.2m and the right balloon is 61.0m. I ... 
please help with economics!
Hi, please help me with this econs question! thanks! I'm asked to sketch the average and marginal cost curves of a software company, in which when it first starts up, the costs are extremely high. (High start up costs, millions of dollar spent to make the software)But after it... 
Math Urgent Please Help
Which construction is illustrated below? a. a perpendicular to a given line from a point not on the line b. a perpendicular to a given line from a point on the line c. perpendicular bisector of a given segment d. bisector of a line segment Please help with this. It doesn't get... 
Physics
Q11.The table below shows how the braking distance x for a car depends on its initial speed u.  u / ms1  5  10  20  40   X / M  2  8  32  128  The relationship between x and u is: doubling speed increases distance by a factor of 4. i)The reaction time of a driver ... 
history
on the 1st page can someone please help me??????? Its the 2nd and 3rd black dot next to my nasme. Even if this is a repost, more information needs to be given before we can adequately respond. Please repost with more information. Thanks for asking. 
5th grade math
Please help with estimate and calculate quotients. I do not understand what magnitude estimate is and to circle a box between 0.1s 1s 10s 100s examples of what i mean are 6/78.6 3/387 29.52 divided by 8 989 divided by 43 845 divided by 5 15.94 divided by 9 please help 
english/help please
I have a project in Brave new world. I have to make a flag that represent the society .Can you give ideas or symbols to represent the different aspects of their society and what color to use too. please and thank you very much. 
english
how did people dress in Elizabethan England? How did the way people dress differ depending on his or her social status? what was the music of the Elizabethan era like? Who were some famous composers? please help me because I cant find these answers anywhere please!! 
Algebra 1
Write an equation of a line that passes through (12, 14) with slope 6. A.y = 6x  12 B.(y + 14) = 6(x + 12) C.(y + 12) = 14(x + 6) I've tried so many different ways to find this answer but can't. Please help me and please show me how you got it. I don't want you to just tell... 
Maths
Write this as a single fraction in its simplest possible form. x/yz . y^2x/z . z^2/y please note that the dot "." is equilvalent to a multiplication sign. Remember it needs to be in a single fraction. And can you please tell me step by step so i know for future reference. ... 
To all students
Please be patient when you post questions. Please, especially, don't post questions that need answers checked within a short period of time. There is no guarantee that the tutor who addresses your subject is online at any particular time. 
Physics
Interactive LearningWare 22.2 at wiley/college/cutnell reviews the fundamental approach in problems such as this. A constant magnetic field passes through a single rectangular loop whose dimensions are 0.35 m 0.55 m. The magnetic field has a magnitude of 2.1 T and is inclined ... 
Physics
A certain digital camera having a lens with focal length 7.5 cm focuses on an object 1.85 m tall that is 4.25 m from the lens. (a) How far must the lens be from the photocells? (b) How tall is the image on the photocells? Is it erect or inverted? (c) A SLR digital camera often... 
Physics
A certain digital camera having a lens with focal length 7.5 cm focuses on an object 1.85 m tall that is 4.25 m from the lens. (a) How far must the lens be from the photocells? (b) How tall is the image on the photocells? Is it erect or inverted? (c) A SLR digital camera often... 
physics
An object is thrown straight up. At the same instant that the object reaches its maximum height, a second object is dropped from this maximum height. Which object hits the ground first and why? Also, a ball is thrown straight up. If the ball's initial velocity is considered ... 
physics
In a hydraulic lift, the radii of the pistons are 2.93 cm and 10.1 cm. A car weighing W = 11.0 kN is to be lifted by the force of the large piston. (a) What force Fa must be applied to the small piston? 925.7 N (b) When the small piston is pushed in by 10.4 cm, how far is the ... 
Physics
A spring scale being used to measure the weight of an object reads 17.1 N when it is used on earth. The spring stretches 4.40 cm under the load. The same object is weighed on the moon, where gravitational acceleration is 1/6g Find the reading of the spring scale on the moon. ... 
physics
A ball is kicked from ground level so thta is intiial velocityis 10ms1 AT AN angleof 60 degrees above the horizontal. It hits a wall which is at a distance of 8m from the initial position of the ball a)show that the ballhits the wall 1.6s after it was kicked b)find the ... 
Physics Lab
I'm doing a lab on centripetal force but I'm not sure how to make the graphs. If you search for "centripetal force lab" on Google and click "I'm Feeling Lucky" it will take you to the exact lab I'm doing. I'm supposed to graph Fc vs. Vt, Fc vs. Vt^2, and Fc vs. e^Vt, but I don... 
Physics please help urgent!!
a collision between two pucks on an airhockey table. Puck A has a mass of 0.025 kg and is moving along the x axis with a velocity of +5.5 m/s. It makes a collision with puck B, which has a mass of 0.060 kg and is initially at rest. The collision is not headon. After the ... 
physics please HELP !
Which situations are examples of a particle with a nonzero acceleration? (Select all that are true for full credit.) a)A car driving around a circular track at constant speed. b)A child going back and forth on a swing c)A runner moving in a straight line with a constant speed... 
Physics (Help)
1. The total enthalpy of 15.000kg of steam at 2250.000kPa is 34191.510kJ. Determine the dryness of the steam. ANS = % 2. Determine the quantity of heat required, to raise 11.100kg of water at 80.000 degrees Celsius, to saturated steam at 2250.000kPa and 71.400% dry. ANS = kJ ... 
Physics Help
1. The total enthalpy of 15.000kg of steam at 2250.000kPa is 34191.510kJ. Determine the dryness of the steam. ANS = % 2. Determine the quantity of heat required, to raise 11.100kg of water at 80.000 degrees Celsius, to saturated steam at 2250.000kPa and 71.400% dry. ANS = kJ ... 
Math! Ms. Sue Please Help!!!
How do you use a venn diagram to find the GCF and LCM of two or more factors. This is what a venn diagram looks like: ()() < put those together and it makes a venn diagram PLEASE HELP! 
Biology Raynaud's Disease
Hey im doing a powerpoint presentation on this raynaud's disease, and could someone please give me some good sites to go through to get info abt this and please mention anything you know about the raynaud's disease as well, thanks. 
math
x+4/2  x1/5 + 2x+5/10 another is 3b/7a  a/2b + 3a^22b^2/14ab another is 2xy/3x+y + 5x/2y this is an rational algebraic expression my topic is all about sums and differences of rational algebraic expression please answer this please HELP ME! 
Coordinate geometry
Our lesson coordinate geom already now analytic proof . HOW TO DO ANALYTIC PROOF ? PLEASE PLEASE HELP THANKS VERY MUCH 
Math(Please Check Again)
25x^2 6x^2  *  12 2x *I got: 5x/2 No. Try again. Can you tell me what I did wrong please.? You have to factor the numerator, you should have two factors for the first, and one for the second. In the denominator, you will have 24 x. I think the x divides out, and ... 
maths urgent please
a particle moves in a straight line such that its position x from a fixed point 0 at time 't' is given by x= 5 + 8sin2t + 6cos2t 1. Find the period and amplitude of the particle. 2. Find the greatest speed of the particle. Could you please explain the steps on how to get to ... 
gen. physics II
Two charges, +Q and ‑Q, are located two meters apart and there is a point along the line that is equidistant from the two charges as indicated. Which vector best represents the direction of the electric field at that point? a. Vector EA b. Vector EB C. Vector EC d. The ... 
physics please help
one kilwatt/hour (kWh) is the amount of work or energy generated when one kilowatt of power is supplied fr a time of one hour. a kilowatt/hour is the unit of energy used by power companies when figuring your electric bill. determine the number of joules of energy in one ... 
physics  please help
Assume the earth is a uniform sphere and that its path around the sun is curcular. Calculate the kinetic energy that the earth has because of its rotation about its own axis. For comparison, the total energy used in the US in one year is about 9.33 x 10^9 J b) Calculate the ... 
Maths / physics
Calculate the rest mass (In grams) of an object whose rest energy is equal to the energy released by a tonne of tnt the energy liberated by 1 g of tnt = 4kJ Rest energy = moc 2 1 tonne of tnt equals 10^6 x 4kJ = 4 x 10^6 kJ x (3.0^8)sqrd = 3.6 x 10^23kJ is this right ?? i ... 
Math
Over 10 plays, a football team gained 63 yards. On 4 of the plays the team gained 0 yards, on 1 play the team lost 3 yards and on 1 play the team lost 6 yards. What was the team's mean gain, in yards, per play for the remaining plays? Could somebody PLEASE HELP ME! It's my ... 
PhysicsPlease check my explanationI need to know
Posted by Juliette on Sunday, October 10, 2010 at 4:58pm. HiI have a questionwe're studying Newton's Laws and my question is: If I have a constant, nonzero force, how does the accleration change as the mass is changed. I think it changes proportionallybecause the formula F... 
Physics
In the Bohr model of the hydrogen atom, the speed of the electron is approximately 2.41 × 106 m/s. Find the central force acting on the electron as it revolves in a circular orbit of radius 4.92 × 10−11 m. Answer in units of N. i used 9.10938188 × 1031 as my mas and ... 
PHYSICS (please help)
A solid, uniform disk of radius 0.250 m and mass 51.1 kg rolls down a ramp of length 4.60 m that makes an angle of 18° with the horizontal. The disk starts from rest from the top of the ramp. a)Find the speed of the disk's center of mass when it reaches the bottom of the ramp... 
Math
Find the slope and the yintercept. 7y+3x+9=14+3x Slope ? yintercept ? Can someone please explain and help with this please. 
math please please!
Is this correct? Write an explicit and recursive formula: 5,4,3,2,1... explicit: 5N+1 recursive:An1+1 
chemistry lewis structure
help me please! dram the lewis structure of CNO  explain me please! thanks 
Please solve it.Logarithm
Please help me because I do not any idea in Logarithm topic.Solve for the value of X: 6log(x^2+1)=5 
Grammar
Can you please define "usable sentence?" Can you please give me an example of a usable sentence? Thanks for your help. 
Biology (Please, Help Me!)
Please, help me! Differentiate a logistic growth pattern from an exponential growth pattern. 
math ASAP Please!!!
Please Help Me!! God bless you!! If m angle sign 1 = 53°, what is m angle sign 4? 
physics
I need help with this problem so please help me. 1. A certain photoelectric surface has a threshold frequency of 6.2*10^14 Hz. A. How much kinetic energy is required to produce an electron emission? B. if the surface is illuminated with light that has a frequency 7.1*10^14 Hz... 
Physics
A car travels in a straight line with an average velocity of 80 km/hr for 2.5 hours and then with an average velocity of 40 km/hr for 1.5 hours. a. Calculate the largest displacement for the 4hour trip. b. Calculate the largest average velocity for the total trip in ... 
physics vectors
In the sum A+B+=C, vector A has a magnitude of 11.4 m and is angled 48.4 degrees counterclockwise from the +x direction, and vector C has a magnitude of 14.8 m and is angled 16.6 degrees counterclockwise from the xdirection. What are the A) magnitude and B) the angle (... 
English
Which of the sentences below using direct address is punctuated correctly? A.Please come with me, Sarah, and Tom, to pick Mom’s birthday present. B.Please come with me, Sarah and Tom to pick Mom’s birthday present. C.Please come with me, Sarah, and Tom to pick Mom’s ... 
English
Which of the sentences below using direct address is punctuated correctly? (1 point) Please come with me, Sarah, and Tom, to pick Mom’s birthday present. Please come with me, Sarah and Tom to pick Mom’s birthday present. Please come with me, Sarah, and Tom to pick Mom’s ... 
English Proofread
Can you please read my first paragraph for my cover letter. The writer had to identify self and purpose in the 1st paragraph. Can you please give me feedback and check my grammar? Thank you help is greatly appreciated Your advertisement for any entrylevel position as an ... 
Physics  URGENT
A car is speeding at constant velocity of 30ms1 in an 80kmh1 zone as it passes a stationary police motorcycle hiding. The motorcycle starts to accelerate at 5ms2 at the same instant the car passes it and continues for 8 seconds. It then stops accelerating and maintains its ... 
Physics  URGENT
A car is speeding at constant velocity of 30ms1 in an 80kmh1 zone as it passes a stationary police motorcycle hiding. The motorcycle starts to accelerate at 5ms2 at the same instant the car passes it and continues for 8 seconds. It then stops accelerating and maintains its ... 
physics please
there are nearly (pi) x (10^7) seconds in one year. find the percentage error in this approximation, where percentage error is defined as abs value[ (assumed value  true value)/ true value] x 100% to find the true value I did: (365 days/yr) x (24 hours/1 day) x (60 minutes/... 
physics formula check please
A mirror produces an image that is located 28.0 cm behind the mirror, when the object is located 9.90 cm in front of the mirror. (a) What is the focal length of the mirror? (b) Is the mirror 1  concave or 2  convex? (Give the number of the correct answer.) The refractive ... 
Physics
Cx = 13.2 m/s, Cy = 10.4 m/s Direction in ° counterclockwise from the positive xaxis & Bx = +100.0 m, By = 106.0 m Direction in ° counterclockwise from the positive xaxis Also Dx = +3.2 m/s2, Dy = +7.6 cm/s2 Find magnitude m/s^2 & Direction in ° counterclockwise from ... 
Physics
A police car stopped at a set of lights has a speeder pass it at 100 km/h. If the police car can accelerate at 3.6 m/s2, a) how long does it take to catch the speeder? b) how far would the police car have to go before it catches the speeder? c) what would its speed be when it ... 
Physics
Can you please explain further because I don't understand? Two parallel slits are illuminated by light composed of two wavelengths, one of which is 645 nm. On a viewing screen, the light whose wavelength is known produces its fifth dark fringe at the same place where the light... 
Physics  correction  significant digits
1) How many SD's? a) 5.7 = 2 SD b) 235.12 = 5 SD c) 8.07 = 3 SD d) 0.0032 = 2 SD e) 0.0150 = 3 SD f) 1.39x10^5 = 3 SD g) 15.200 = 5SD h) 1070 = 3 SD 2) Calculations  Please check the SDs a) 15.3 + 25.03 = 40.33 = 40.3 b) 1200 + 63 = 1263 = 1300 c) 4.78  1.2 = 3.58 = 3.6 d) ... 
Physics ASAP PLease
Consider two charges Q and q separated by a distance d . If the potential at the point p (which is in right side from both charges) is V=0 , we can conclude (one answer only): a)no net force would act on a test charge located at P . b)Q and q must be same sign but different ... 
Physics
A uniform magnetic field points north; its magnitude is 3.5 T. A proton with kinetic energy 6.0 × 1013 J is moving vertically downward in this field. What is the magnetic force acting on it? This is what I've done. The answer is incorrect. Please help me find out why. 3.5T ... 
Physics
A cannon is rigidly attached to a carriage,which can move along horizontal rails but is connected to a post by a large spring, initially unstretched, of force constant 60000 N/m. The cannon ﬁres a 305 kg projectile at a velocity of 174 m/s directed 38.9◦ above the... 
GEOMETRY CIRCLES PLEASE
HELP ME PLEASE. 1.An isosceles triangle with each leg measuring 13 cm is inscribed in a circle . if the altitude to the base is 12 cm find the radius of the circle 2. Circles a and b are tangent at point c. p is on circle a and q is on circle b such that pq is tangent to both ... 
physics help please!!!
From what maximum height can a 61 kg person jump without breaking the lower leg bone of either leg? Ignore air resistance and assume the CM of the person moves a distance of 0.65 m from the standing to the seated position (that is, in breaking the fall). Assume the breaking ... 
physics help
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 ... 
physics
At New York City, the earth's magnetic field has a vertical component of 5.2 105 T that points downward (perpendicular to the ground) and a horizontal component of 1.8 x 10^5 T that points toward geographic north (parallel to the ground). What is the magnitude and direction ... 
Physics
A uniform, solid, spherical asteroid with mass 1.2 * 10^13 kg and radius 1.0 km is rotating with a period of 4.6 hours. A meteoroid moving in the asteroid's equatorial plane crashes into the equator at 9.0 km/s. It hits at a 58° angle to the vertical and embeds itself at the ... 
College physics
a person drives northward (90 degrees) at 15m/s in a truck that weighs 2500kg. a second person driving a car that weighs 1600 kg drives southwest (225 degrees) at 16 m/s. They have a perfectly inelastic collision. What is the direction and speed of the two vehicles immediately... 
Physics
Please help me, I am in dire need of it, A football quarterback shows off his skill by throwing a pass {5.70 m downfield and into a bucket. The quarterback consis tently launches the ball at 38.00' above horizontal, and the bucket is placed at the same level from which the ... 
physics
Somebody please shows me how to solve for b) and c)step by step. I found a)=2.27s but stuck there. A 1.49kg particle initially at rest and at the origin of an xy coordinate system is subjected to a timedependent force of F(t) = (4.00ti − 8.00j) Nwith t in seconds.(a) At ... 
to angie
Please do not post responses to other students unless you can help them very proficiently with their specific problem or question. This is not a website for "personals"  so please don't post any personal information about yourself or ask personal informtion of others. Thanks... 
science and history
How did the apollo 11 space mission pave a way for 1.) technology 2.) science 3.) America 4.) space exploration Please note that we don't do students' homework for them. Once you have come up with a response to these questions, please repost and let us know what you think. ... 
AED 200
Can anyone help me with these. I want different views please. In separate paragraphs describe your approach to classroom organization, motivation, discipline, and teaching styles, given your current perspective. Contrast each element of this paper with the opposite approach (... 
Normal Public High School Chemistry
Please assist me in answer this question please show me all the formulas used and the units and how to convert them if needed. Thank You. If the halflife of Ba (140, 56) is 12.75 dyas, how many atoms of (140, 56) Ba will be left after 9 weeks if there were initially 2.4 mol ... 
Science (7th Grade)
My science teacher is really mean. And if I don't have the following questions done, I have a suspention! Please help!! 1) What discovery demonstrated that atoms are not the smallest particles? 2) Dalton did what to his theory that Democritus did not? 3) It is important for ... 
calculas(URGENT..... PLEASE....)
1) A region is bounded by the line y = x and the parabola y = x2  6x + 10. What is the volume of the solid generated by revolving the region about the xaxis? would u please give the explanation with a detailed steps to the answer because i am not able to reach the final ... 
AlgebraPlease check work
I've reworked this and added on is any of it correct?Totally confusedlearned this today and I don't get itPlease help Write the standard form of 9x^2 + 4y^272x+16y+124=0 I think the first step is to take the constant to right side so I have: 9x^2 + 4y^272x+19(x^28x+16) + ... 
Algebra please explain!!!
A boat costs $92,000 and depreciates in value by 15% per year. How much will the boat be worth after 10 years? 18,112.45 78,200 18,941.98 69,000 Is the answer the first one? Could somebody write down the steps for me please? Pleas help asap! Thanks 
Please check history
Please check! What was the effect of the depression of the 1890s on South Carolina? a. Gold was discovered in Alaska. b. Many banks failed and railroads went bankrupt. c. Paper money was no longer backed by gold.*** d. Inflation caused farmers to run large debts. 
math for belinda to help me please
1.x^29x+14 2.GCF of m^2n^2+3m Oh haha ignore the new question. For the first one, set it up: (x )(x ) Now, think of two numbers that are multiplied to 14. They have to either both be positive or both be negative to get positive 14. They also must be able to add up to 9. Let ... 
PHYSICS PLEASE HELP
A large balloon of mass 237 kg is filled with helium gas until its volume is 318 m3. Assume the density of air is 1.29 kg/m3 and the density of helium is 0.179 kg/m3. (b) Calculate the buoyant force acting on the balloon. ____________N (c) Find the net force on the balloon and... 
english
Homework help please i need to pass? in the play a midsummer night dream for the character Hermia i need help answering these question as if i were Hermia. (answer the questions like something Hermia would say) please really in depth answers please What does it mean to be a ... 
Physics please clarify
The potential at location A is 379 V. A positively charged particle is released there from rest and arrives at location B with a speed vB. The potential at location C is 789 V, and when released from rest from this spot, the particle arrives at B with twice the speed it ... 
Chemistry
Someone help me with my titration molarity calculation please!? I have titrated 1.000 mL of Ca(IO3)2 with 2.197 ml of 0.022 M thiosulfate. First I found the moles of thiosulfate present with 0.002197 L x 0.022 M = 4.8388E5. The mole ratio of S2O3^2 and IO3 should be 6:1 (... 
math (please help)!
Geometry ***(PLEASE CHECK MY ANSWER)*** 1. If triangle RST = triangle NPQ, which of the following is true? A.) ÚR = ÚP B.) ÚR = ÚQ C.) ÚT = ÚP D.) ÚT = ÚQ < My Answer! 2. Given triangle RST = triangle NPQ, RT = 7x  5, NQ = 5x + 11, find the ... 
Literature Opinion Please Read
I need your opinion on something. If you are a boy please refer to a girl. If you are a girl please refer to a boy. Ok now if you are doing a play for Romeo and Juliet and you had the opposite gender would you sound like yourself or would you try to sound like a girl or boy. ... 
Physics
A spoked wheel with a radius of 44.0 cm and a mass of 1.90 kg is mounted horizontally on frictionless bearings. JiaJun puts his 0.550kg guinea pig on the outer edge of the wheel. The guinea pig begins to run along the edge of the wheel with a speed of 18.0 cm/s with respect ... 
English
1. Please call me at 1234567. 2. Please call at 1234567. 3. Please call 1234567. 4. Please dial me at 1234567. 5. Please dial at 1234567. 6. Please dial 1234567. (Which ones are not grammatical? Which ones are grammatical? Thank you.) 
physics
A physics professor lifts her 8.2kg briefcase at constant speed with an upward force. Find the magnitude of her force. answer in newtons. 
Physics
Hi, I am in the middle of a physics lab about sound resonance, but I have no idea what "n" stands for in the equation we have to use, which is L=(2n1)(wavelength)/4 any help? thanks! 
physics
A Physics book , mass unknown , is dropped from a table . its velocity just before hitting the ground is 9.39 m/s . what is the height of the table ? 
science physics helppppp ! i badly need one T___T
how is physics related to food technology and everything related to foods ? 
physics
A physics professor lifts her 9.0kg briefcase at constant speed with an upward force. Find the magnitude of her force. 
physics
A physics professor lifts her 9.0kg briefcase at constant speed with an upward force. Find the magnitude of her force.