# physics please HELP !

128,894 results, page 37

### mass communication

who is target audience of sex and the city? Please note that we don't do students' homework for them. Once YOU have come up with a response to YOUR questions, please re-post and let us know what you think. Then someone here will be happy to critique your work. =)

### Debatind/ Sose

please I really need statistics and exact examples for my debate. I can not go up there and say many people think we are too americanized. We won't win. Please give me some stats. and eg. on the topic "that australia is becoming too american" Thanks Minerva

### Spanish

Can someone please explain to me how to do this: Traduce las frases al espanol, por favor. 1. Don't rent the apartment 2. Don't leave 3. Don't pass the papers 4. Never play the piano 5. Don't visit your grandmother etc.... Please help. I have to do 20 sentences. Thanks.

### English

The________into the main mineshaft ran for almost 200feet. and the choices are: abattior aficionado abstract alchemical accelerant anachronism acclimated antecedent adit PLEASE IF SOMEONE KNO THE ANSWER PLEASE REPLY

### Science-QUICKLY PLEASE!!

3. Which of the following projects is a good example of the current cooperation between nations for the furthering of scientific research? a. International Space Station b. NAFTA c. Hoover Dam d. Panama Canal please help!!!!!

### calculus-can someone please help me with this ques

Given the following polynomial f(x)=(x-1)(x-5), find A.the zeros and the multiplicity of each one b. where the graph crosses or touches the x-axis c.the number of turning points d. the end behavior Please show work.

### Honors US history.. PLEASE HELP!!

How did the success of the civil rights movement and abolishment of slavery open doors to the election of the first Black American President of the United States, Barack Obama? I don't know how to answer this! PLEASE HELP ASAP!

### English

Please help me correct grammar. Please be informed that starting on Nov.22,2015. Due to high consumptiom for the lectric bills. The internet usage charge will be P15.00 per hour and there will be no promo for P25.00 2 hours. Thank you.

### ALGEBRA PLEASE HELP ASAP

find the volume of a cylinder with a diameter of 16mm and a height of 5.7. A.2,292mm^3 . . . 4,584mm^3(i think its this one) . . . 689mm^3 . . . . 1,146 (but i also got an answer close to this but the tens place was 5) PLEASE HELP QUICKLY THANK YOU

### ENGLISH

Mark the stressed syllables in the following sentences 1. can i see you today? 2. it's impoossible to please everybody. 3. The light's wrong for photography. 4. My mind went blank and everything blacked out. 5. Please bring me a chair

### English

Mark the stressed syllables in the following sentences 1. can i see you today? 2. it's impoossible to please everybody. 3. The light's wrong for photography. 4. My mind went blank and everything blacked out. 5. Please bring me a chair

### physics

A block of mass 3 kg initially at rest is pulled along a friction less horizontal surface with a force of 4N. The speed of the block at t=2s is a)4/3 m/s b)8/3m/s c)4 m/s d)8m/s e)24m/s For this problem this is a graph. Some of the points on the graph are (0,0),(1,2),(2,4),(3,...

### physics

An owl has good night vision because its eyes can detect a light intensity as small as 5.0*10^-13 W/m^2. What is the minimum number of photons per second that an owl eye can detect if its pupil has a diameter of 8.5mm and the light has a wavelength of 510nm? I really got no ...

### Physics

Can someone please tell me the right answer to this problem. A troll on a 75m tall cliff throws a 35 m/s boulder at 35 degrees above the horizontal at a herd of sheep. What is the time of flight, the range and the maximum height for the boulder? I got the range as 58.77. and ...

### physics

An electron has a kinetic energy of 4.2 x 10-17 J. It moves on a circular path that is perpendicular to a uniform magnetic field of magnitude 3.3 x 10-5 T. Determine the radius of the path. The electron in the problem has Charge of the electron (q) = 1.6*10-19C Mass of the ...

### 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 ...

### physics

A piece of aluminum (specific heat 910 J/kg C) of mass 200 g at 80C is dropped into a styrofoam cup filled with 100 mL of water at 20C. What the final temperatures of the water and the aluminum? Show calculations. I have Q=m c T but I got 80C which I know is wrong because I ...

### Physics

A velociraptor comes at you at 20m/s and it takes you exactly 2.22 seconds to hit the switch for the door which takes 3 seconds to close. How far away must the velociraptor at least be from the door for your survival? (reworded question to make more interesting without ...

### physics(heat)

a mixture of 250g of water and 200g of ice at 0deg C is kept in a calorimeter which has a water equivalent of 50g. if 200g of steam at 100deg C is passed through this mixture, calculate the final temperature and the mass of contents of the calorimeter. ans 572.22g please ...

### Physics

When a cannon with a longer barrel is fired, the force of expanding gases acts on the cannonball for a longer distance. What effect does this have on the velocity of the emerging cannonball? (Do you see why long-range cannons have such long barrels?) Please help; need a ...

### Math

A Woman has cat's and birds. When asked how many of each she has she answers... " I have between both cats and birds 400 feet and 232 eyes.(Cats have 4 feet and Birds have 2 feet) How Many Total? How many Birds? How many Cats? Please help me solve this. Please Please. Thank You

### Physics please help!

The distance between earth and the moon can be determined from the time it takes for a laser beam to travel from earth to a reflector on the moon and back. If the round-trip time can be measured to an accuracy of 0.19 of a nanosecond (1 ns = 10-9 s), what is the corresponding ...

### Physics

When you lift a ball with a force of 82N, the ball accelerates upward with an acceleration of a. If you lift with a force of 92N, the balls acceleration is 2a. Find the weight of the ball, and the acceleration a. I tried solving this via substitution algebra, but the answer ...

### physics

A scuba diver has an air tank with a volume of 0.010 m^3. The air in the tank is initially at a pressure of 1.0x10^7 Pa. Assume that the diver breathes 0.400 L/s of air. Find how long the tank will last at a depth of each of the following. (a) 1.0 m min (b) 10.0 m min Please ...

### Physics

A scuba diver has an air tank with a volume of 0.010 m^3. The air in the tank is initially at a pressure of 1.0x10^7 Pa. Assume that the diver breathes 0.400 L/s of air. Find how long the tank will last at a depth of each of the following. (a) 1.0 m min (b) 10.0 m min Please ...

### physics

A scuba diver has an air tank with a volume of 0.010 m^3. The air in the tank is initially at a pressure of 1.0x10^7 Pa. Assume that the diver breathes 0.400 L/s of air. Find how long the tank will last at a depth of each of the following. (a) 1.0 m min (b) 10.0 m min Please ...

### PHYSICS PLEASE HELP !

Q : As you ride on a loop to loop in a roller coaster, select all the forces that might be acting on you at the top of the loop a: force down due to gravity b: force down from the seat on you c: force up on you from the straps holding you in place d: centripetal force on you ...

### physics help please

Q : As you ride on a loop to loop in a roller coaster, select all the forces that might be acting on you at the top of the loop a: force down due to gravity b: force down from the seat on you c: force up on you from the straps holding you in place d: centripetal force on you ...

### physics and intrumentation

A dose of 07ml contains 25.3 mCi @ 10:30 am. Use the information to answer all. A. What is the concentration of this dose? B. What was the original concentration at 8am? C. What would be the volume of a 25 mCi dose at 11:00am? D. whatis the ratio of concentration a 8am and 10:...

### Physics

Ken has five 200W security lights on outside of home. How much energy do the security lights use in 8 hrs? If the cost of electricity is 8 cents per kWh,what is the cost of operating the security lights ? Please help I'm not sure which formula to use?

### Physics

A golfer rides in a golf cart at an average speed of 3.93 m/s for 43.3 s. She then gets out of the cart and starts walking at an average speed of 1.13 m/s. For how long (in seconds) must she walk if her average speed for the entire trip, riding and walking, is 1.99 m/s? Can ...

### SCI 275

help please! CLASS - Please see the attached figure. How do the three factors shown in the figure interact to promote sustainable development? [img src="@7140725"]

### math please explian

Please explian I keep messing up 100,000 mortgage at a rate of 8 1/2 for 20 years has a monthly payment of what I am readyto throw this paper out the window

### history

i am supposed to draw a political cartoon on either federalists or anti-federalists. can someone give me some ideas please? it must focus on a event or issue. please help!

### college algebra

please solve by method of substitution 0.3x-0.4y-0.33=0 0.1x + 0.2y -.21=0 please give all steps to solve.I think I understand the basic concept but this is little more complicated for me. Thanks in advance

### English

Hey... Can you please give me some questions on William Shakespeare sonnet 29, 30, and 116. I tried to look for MCQ to practice some more, but i didn't find so please if you can help me i'll appriciate it thanks

### Algebra Please Help

Can you please give a example so that I can understand it better. 1)How can you tell whether a polynomial is written in factor form. 2)Construct a trinomial whose greatest common factor is 2x^2.

### Math

The volleyball court -if it id 80 ft long and 50 ft wide, how would you find the dimensions of the court? Explain please! Remember that I am a 6th grader. Please don't give me a 10-12th grade answer.

### 7th grade math Pygorean Theroem Ms.Sue please

Explain if a triangle with the given lengths is a right triangle. 1. 18, 24, 30 2. 7, 24, 25 3. 13, 14, 15 I really do not know how to solve these problems! I have no idea how!!!! Please help!

### college algebra

Can someone please help me find the x-intercepts and y-intecepts of this equation. I have the radius, and center but I can't seem to get the intercepts. x^2+y^2=16x-18y+145=25 Please show work. Thanks!!

### Math-PLEASE HELP!!

I have two questions That I need help with please!! 1. solve the following exponential equation. what is the exact solution? what is the decimal approximation when rounded three decimal places? 2.

### Chemistry

can someone balance this redox please. frustrating because i don't know what else im doing wrong. C2O4^2- + MnO2 --> Mn^2+ + CO2 my answer is 2C2O4^2- + MnO2 + 4H3O^+ --> Mn^2+ + 4CO2 + 6H2O im getting mad please help thanks.

### Math-Please help

*Is the statement below true of false? The expression (14x + 7y) + 5x + 9(33y + 11) is the sum of three terms. I think this question is true. please explain this to me.Nobody respone to me.

### Math

Why is raising a number to the power of 1/2 the same as finding the square root of the number? Can someone please help. Please provide examples. I would appreciate it if you guys can help as soon as possible.

### Math

I really need help on this PLEASE a 5 man baseball team how would I find average? Would it be total hits divided by at bats or add up the 5 averages and divide by 5? Thank You - Please help me!

### AP CALC. AB

(t^3)+(t^2)-16t+12 for 0<=t<=8 describe the particles motion when t=2 can u please tell me about it's maximum and its acceleration whether it speeding up, or slowing down, or whether its constant I know that it has a max of -8 but i don't know how they got it please help.

### MATH HELP PLEASE!!!

How do you solve this please show with steps I'm very lost, I tried to put it in square root and I tried to multiply my approaches do not add up to the answer which is supposed to be 9/125... (3^1/3 • 5^ -1/2)^6

### Geometry

I need help simplifying the radical (IN RADICAL FORM ONLY) What's the square root of 224? Can you please show how you got the answer so I can learn how to do it myself next time please.

### Physics

Ok so I am not so bad at physics but I find it hard to understand formular like how to use this one mu *m*g= I know its somewhat related to friction but what is the mu stand for and g too IF someone could plzz translate these symbols to words I would really appreciat it Sorry ...

### Physics - The Branches of Physics

Give at least one example of an application of each branch: Motion -cellphone Properties of Materials Sound -Radios Light -Candle Electricity -Calculator Magnetism -VCR's Properties of atoms -Computers Nuclear physics -? Could you check to see if Ive done this right? And I ...

### History

MS. SUE PLEASE HELP ME! SOCIAL STUDIES QUESTION? So I am trying to write two articles and am NOT asking you to write them for me, just for help so I can write them. It's about the French and Indian war. I know that they were fighting and why, but what caused both of them to ...

### chemistry

How many grams silver (Ag) is added to 13 grams gold to produce 85% gold (Au) alloy? Can someone please give me the derived formula to be used? I had managed to solve it though I'm not quite sure if it's correct. i got 73.67g Ag, can someone please correct me if i'm wrong. ...

### physics

If instead, the swimmer makes 30.5 laps in the same pool in 3 h, determine the total distance the swimmer traveled, the swimmer's total displacement, the swimmer's average velocity, and the swimmer's average speed. pool is 30 m long please answer in km

### physics

If instead, the swimmer makes 30.5 laps in the same pool in 3 h, determine the total distance the swimmer traveled, the swimmer's total displacement, the swimmer's average velocity, and the swimmer's average speed. pool is 30 m long please answer in km

### Physics Help

If we witness events taking place on the moon, where gravitation is weaker than on Earth, would we expect to see a gravitational red shift or a gravitational blue shift? and Explain please a)blue shift b)red shift c)no shift

### physics

please check: Conductors can be charged by ___, while insulators cannot. a. grounding b. induction c. polarization d. contact D Which of the following is not true for both gravitational and electric forces? a. the inverse square distance law applies b. forces are proportional ...

### physics

a projectile is ejected from a 25 m high tower with a velocity of 40 m/s at an angle of 30 degrees to the horizontal first on Earth and then on Mars. What is the ratio of the time taken to hit the ground on Mars compared to Earth? (Assume gravity on mars = .38gEarth) The ...

### physics

An incident X-ray photon of wavelength 0.2800nm is scattered from an electron that is initially at rest. The photon is scattered at an angle of 180.0 degrees and has a wavelength of 0.2849nm. Use the conservation of linear momentum to find the momentum gained by the electron. ...

### Physics (please help!!!!)

A thin uniform rod (length = 1.3 m, mass = 4.1 kg) is pivoted about a horizontal frictionless pin through one of its ends. The moment of inertia of the rod through this axis is 1/3 m L2. The rod is released when it is 55° below the horizontal. What is the angular acceleration...

### Physics please HELP

What is the ratio of the spin angular momentum of the Earth and its orbital angular momentum about the Sun. The mean radius of the earth is R_earth = 6400 km. The radius of the Earth's orbit is r_s = 1.5 * 10^8 km. For simplicity you may assume that the mass of the Earth is ...

### Physics

A wheel of moment of inertia 0.136 kg · m2 is spinning with an angular speed of 5000 rad/s. A torque is applied about an axis perpendicular to the spin axis. If the applied torque has a magnitude of 67.8 N · m, the angular velocity of precession will be? Please help me solve...

### Diabetes

Can someone please name 2 methods of treatment for diabetes, please? Danke!

### Math 116 algebra please check

Simplify 6[-73-(-19-83)]=174 Please check

### science help please

i don't understant what sexual reproduction is and what asexual reproduction is could please help me understand

### history.

evaluate how the age of enligtenment is a response to the age of absolutism. help please. please.

### history.

evaluate how the age of enligtenment is a response to the age of absolutism. help please. please.

### Spanish-Please check

Please check-Thank you I come from the library. Yo vengo de biblioteca.

### integral Calculus

Please help me with this integral problem: ʃ x^2(a^2-x^4)^2dx please help..thanks alot:)

### science

PLEASE HELP I NEED A GOOD SCIENCE FAIR PROJECT. PLEASE HELP THANK YOU JUSTIN

### maths

the 8th term of an a.p is 37 and 12th term is 57 .find the a.p please help this questions .please help.

### calc

integral (x^2+x-1)/(x+1) dx can you please explain maybe not step by step but not just the answer please thanks

### mathURGENT!!!!!!!

if (4^x)-(4^x-1)=24 what is the value of (2x)^x? please answer and explain step by step how u got it... PLEASE?????

### mathURGENT!!!!!!!!!!

if 4^(x)-4^(x-1)=24 what is the value of (2x)^x? please answer and explain step by step how u got it... PLEASE?????

### physics

Can someone please help me? I am having a really hard time with physics. This is not a test question. It is a practice problem from a review website I am supposed to use, but I am having a really hard time. Can someone at least help me to begin setting up the problem? I would ...

### Physics

An alloy of iron and silver has a total mass of 30 grams and a volume of 20.4 centimetre cube Calculate the mass of iron only and the volume silver only Please help

### university physics

It is proposed that future space stations create an artificial gravity by rotating. Suppose a space station in constructed as a 1170.0 m diameter cylinder that rotates about its axis. The inside surface is the deck of the space station. What rotation period (in s) will provide...

### Physics- Elena please help!

A 2300. kg car starts from rest and accelerates uniformly to 24.0 m/s in 24.0 s. Assume that air resistance remains constant at 510 N during this time. Find (a) the net force on the car b) the average power developed by the engine? c) the instantaneous power output of the ...

### Physics! Please help!!

HELP!! Two blocks of mass m1 = 320 g and m2 = 725 g are pushed by a force. The coefficient of kinetic friction between each block and the ground is 0.4. The blocks move together (with one pushing the other) with an acceleration of 225 cm/s2. What is the value of the applied ...

### physics

1.Distinguish between atomic physics and nuclear physics? 2.Briefly describe the Bohr model of the atom. What is Bohr’s key idea (involving matter waves) that makes the Bohr atom have discrete energy levels? I really didn't understand what they were wanting, so many of ...

### Science

I am working on a year 10 physics assignment on road science. I am trying to figure out the reaction distance of a car with: Skid marks = 24m Reaction time = 1 sec Decelaration rate = 6m/sec I have many formulas in my book and am unsure of which one to use and what the correct...

### Physics

Please help me with this problem. The standard source for radiation therapy was radioactive 60Co which decays with a halflife of 5.27y, into an excited nuclear state of 60Ni. That nickel isotope then immediately emits two gamma ray photos wach with energy of 1.2 MeV. How many ...

### Physics

A block of weight 3.8N is launched up a 30 degree inclined plane of length 2.25m by a spring with spring constant 2.35kN/m and maximum compression 0.10m. The coefficient of kinetic friction is 0.50. How much kinetic energy does it have at the top of the incline? I get 2.4J am ...

### physics

our class was given an extra credit assignment where we have to design a mobile that has both the net forces and torques = 0. i have all of the masses know i just don't know how to find radii. no two masses can be in the same position nor can they be at the center of mass...i;...

### physics

A proton initially moves left to right long the x‑axis at a speed of 2 ´ 103 m/s. It moves into an electric field, which points in the negative x direction, and travels a distance of 0.2 m before coming to rest. What acceleration magnitude does the proton experience? a...

### physics

You tie a battery powered, fixed-frequency buzzer to the end of a string and swing it around in a large horizontal circle. Your friend stands well off to the right and listens to the tone. At which of the labeled locations will the buzzer be when your friend hears the highest ...

### Physics (Wave Force)

An archer must exert a force of 445 N on the bowstring shown in Figure (a) such that the string makes an angle of è = 34.0° with the vertical. (a) Determine the tension in the bowstring. _____________________________________ My answer was 420.525, but it is within 10% of the...

### physics what am i doing wrong?

Three masses are arranged in the (x, y) plane. 3kg (0,0) 7kg (10,0) 6kg (0,3) What is the magnitude of the resulting force on the 3 kg mass at the origin? The value of the universal gravitational constant is 6.6726 × 10^−11 N · m^2/kg^2. Answer in units of N what ive ...

### physics

A tire placed on a balancing machine in a service station starts from rest and turns through 4.93 revolutions in 1.47 s before reaching its final angular speed. Calculate its angular acceleration. It must be in units of radians. Please help. I have 20 attempts to do this and I...

### As physics

The drag force acting on a car travelling at a speed v is given by the equation F=kAv^2 Where A is the area of the front of the car. Show that a suitable unit for the quantity k is kgm-3. Mark scheme answer: F= kgms-2 or A=m2 V=ms-1 Which is K=kgm-3 I am confused could someone...

### As physics

The drag force acting on a car travelling at a speed v is given by the equation F=kAv^2 Where A is the area of the front of the car. Show that a suitable unit for the quantity k is kgm-3. Mark scheme answer: F= kgms-2 or A=m2 V=ms-1 Which is K=kgm-3 I am confused could someone...

### Physics

So... The task is to evaluate the design of three types of car tires, and explain how each type differs to maximize performance. Physics terminology is to be included in our report. -------- I just need a starting point. What types of tires do you recommend I research and what...

### Science-Physics

You push a 67 kg box across a floor where the coefficient of kinetic friction is uk = .55. The force you exert is horizontal. (a) How much power is needed to push the box at a speed of .50 m/s? (b) How much work do you do if you push the box for 35 s? *please list the steps to...

### physics

A simple harmonic oscillator consists of a 1.1 kg block attached to a spring (k = 180 N/m). The block slides on a horizontal frictionless surface about the equilibrium point x = 0 with a total mechanical energy of 3.0 J. (a) What is the amplitude of the oscillation? (b) How ...

### Physics(Please help, thank you)

I had to do an experiment where a tiny steel ball was measured using a micrometer. There was then a series of calculations that needed to be completed and then a percent error had to be calculated. I think that my data may be incorrect or maybe I am just not doing the ...

### Physics as repost please answer and help

Silver plating: A student attempts the process of silver plating to determine the mass of a silver atom. a series of objects are measured, then electroplated for a measure period of time, while maintaining a steady current through a solution of silver nitrate in tap water. ...

### Math

A house is being renovated for $50,000. Right now the HST is 12% and is charged on all renovations. After April the HST will be gone and be replaced with PST of 7% and the GST of 6%. Renovations will only have to charge GST. How much money will the homeowner save if they wait ...

### Language Arts - Please Check Answer

Please help me with the following question: A paradox is a literary device often used to A. emphasize or make readers think about important ideas. B. provide hints or clues about events that occur later in a story. C. explain a character’s reason for doing or saying ...

### Physics

You have been asked to keep a 35.1 kilogram crate from sliding down a 50.03° incline. The coefficient of friction between the crate and the incline is 0.26, and it's on the surface of Mars (gravitational acceleration at the surface of Mars is 3.75 m/s^2). How much force must ...

### college physics

An airport worker needs to make it across a luggage belt in order to retrieve a stuck suitcase. The belt is moving with 1.6 m/s, and the worker can run with v=1.7 m/s. If he wants to make it straight across the d=2.3 m wide belt, how long will it take for him to reach the ...