# its physics.. i just want the formula

96,401 results

### Physics

Hi! I am going to apply for a medical study admission test and where just wondering if you guys could help me to come up with the formula for solving this problem. I am not looking for a answer, just the mathematical formula to solve theese kind of questions. The question is ...

### Physics

Hi! i am going to apply for a medical study admission test and where just wondering if you guys could help me to come up with the formula for solving this problem. I am not looking for a answer, just the mathematical formula to solve theese kind of questions. The question is ...

### Check my physics

Would you mind checking one of my problems from my physics study guide? I know the answer and just want to make sure I am using the right formula. :) A 78-kg skydiver has a speed of 62 m/s at an altitude of 870 m above the ground. a. Determine the kinetic energy possessed by ...

### Physics (Formula)

I just need the formula. A 2.5 kg object is whirled in a vertical circle whose radius is 0.89 m. If the time of one revolution is 0.94 s, the magnitude of the tension in the string (assuming uniform speed) when it is at the top is

### its physics.. i just want the formula

A boy on a 2.2 kg skateboard initially at rest tosses a(n) 7.7 kg jug of water in the forward direction. If the jug has a speed of 2.9 m/s relative to the ground and the boy and skateboard move in the opposite direction at 0.57 m/s, find the boy’s mass. Answer in units of kg...

### Physics-Please help with formula

If I have an electric field around a charged object that is 2.95 x 10^6 N/C at a distance of 0.400m, how would I find the charge on the object? If you could just direct me with a formula-then I'll do it and check back with my answer-Thank you for you help

### Math

For each geometric series, calculate t6 and S6. a) 6 + 30 + 150 ... So I'm not exactly looking for an answer to this question but I was wondering why they want you to find t6 too? Would finding out t6 (via general formula) help in any way when finding S6? I'm not trying to ...

### Physics

A ball is thrown from ground level up in the air at 61m/s. How fast is the ball going 1s after being thrown. This problem wants you to use the formula v = (-1/2)gt^2 + v_0 g=9.8m/s^2 and v_0 = 61m/s so v = (-1/2)g*(1s)^2 + 61m/s at t = 1. I wrote the formula wrong. It should ...

### math and physics

i just want to know form where i got on this formula the 4.9t² on this formula s=4.9t²+Vot+h because the book only say that a physics theory shows that when an object is thrown upward with an initial velocity Vo, its approximate height is given by that quadratic function i ...

### accounting

How do I set this problem up to do it? I do not want the answer just the formula. The question is for Present Value, Future Value, and Annuity Due: . Your uncle offers you a choice of $30,000 in 50 years or $95 today. If money is discounted at 12 percent, which should you ...

### chemistry

why is the molecular formula of oide of arsenic in its gaseous state is not neccessarialy the same as its empirical formula what does this mean and how do i do it Molecules are known to dimerize or trimerize. We actually don't know what the molecular formula is until we ...

### Physics

A 700# rock sits atop a 150 foot cliff. 1) If it is pushed off how much kinetic energy is in the rock just before it hits the ground? 2) How much potential energy does it have just before it hits the ground? On 2 will I use the mgh formula? If so what height do I use? On 1 , I...

### Physics

I don't really understand how to do the problem with just the constants...or in formation of a formula. Much help on explaining how to do it would be much appreciated. 1) Two equal but opposite charges re separated by a distance d. Determine a formula for VBA = VB – VA for ...

### Physics (Formula)

A string requires a 191.0 N force in order to break. A 1.75 kg mass is tied to this string and whirled in a vertical circle with a radius of 1.92 m. The maximum speed that this mass can be whirled without breaking the string is Again I just need the formula!

### Finding a Formula, help please !

Does anyone know the formula to find any point between two other given points in a line? Please, and thank you! The mindpoint formula xm= _(x1 + x2) /2 ym = (y1 + y2) /2 This give the midpoint (xm, ym) between the points x1,y1 and x2,y2 Thanks for the tip, but I was wondering ...

### Physics

Here, I am dealing with a Science formula for momentum. The formula is: M= mv So, I have: m= 10 grams (.01 Kilograms) v= 5,000 centimeters a second (50 m/s) It says to Find M and also solve the formula for M. Please help!

### Physics

Here, I am dealing with a Science formula for momentum. The formula is: M= mv So, I have: m= 10 grams (.01 Kilograms) v= 5,000 centimeters a second (50 m/s) It says to Find M and also solve the formula for M. Please help!

### physics

Using that velocity, and the information from above, compare the total momentum just before the collision with the total momentum after the collision. (again let the masses of the balls be m) , it is a lab question , i was just wondering what formula to use for the momentum

### Chemistry

How much energy in joules does it take to raise the temperature of 255g of water by 12.5 C? I just don't know which formula to use. Every formula I look at has 3 components needed, but I'm only given 2. Thanks :)

### Physics

I have to find the eccentricity of an elliptical orbit with one focus, earth's center, E. I know the formula to find eccentricity is sqrt(1-)(b^2/a^2), but I don't know where to use the radius or if I need it. Do I just need to use the eccentricity formula to find it? 0<E<1

### Chemistry

the formula H2O2 is an example of 1.molecular formula 2. an empirical formula 3.an ionic formula 4.an organic formula

### Physics

What is the wavelength of a radar signal that has a frequency of 30 GHz? The speed of light is 3 × 10^8 m/s. Answer in units of m Giving me the formula is just fine

### algebta 2

To find the nth term of an arithmetic sequence the formula given is a(sub n) = a (sub 1) + (n-1)d. Why is (n-1) a part of the formula? Why isn't just n?

### Calc-Sequence

Find a formula for 1/2, -1/4, 1/6, -1/8, 1/10... So I know that the sequence is just adding 2 to the bottom but i don't know how to write it with a formula including n's..im stuck

### math (cant figure it out)

How to find the surface area of a cylinder with a diameter of 6ft and a height of 20cm using 3.14 rounded to the nearest whole number. (I cant figure it out my book doesn't give an example of it just a radius formula and ive tried searching the formula but i cant find any ...

### PHYSICS - Waves

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

### Chemistry

Can someone just check this one for me? The neutralization reaction between Al(OH)3 and HNO3 produces a salt with the formula Al(NO3)3 + H2O Yes and no. It DOES produce a salt and that salt is Al(NO3)3 with the formula you have. However, the H2O, although a part of the ...

### physics

Using the data from Step #3 and the velocity found above, compare the gravitational potential energy of the ball at the top of the incline, with the kinetic energy of the ball just before it leaves the table. (you do not need to know the mass, just let it equal m). Is ...

### Physics

Suppose a straight 1.25 mm diameter copper wire could just "float" horizontally in air because of the force of the Earth's magnetic field B, which is horizontal, perpendicular to the wire, and of magnitude 5.00 multiplied by 10-5 T. What current would the wire carry? I want to...

### Physics

A hypothetical spherical planet consists entirely of iron (p=7860 kg/m^3). Calclate the period of a satellite that orbits just above its surface. I started out with the density formula P=M/V, but i kept subbing in other formulas, but i get stuck..can someone help me? thanks. I...

### Physics

a bowling ball is thrown down from the top of a building at 20 m/s. Find the distance the ball travels in A) 1 s B) 3 s should I make the 20 m/s negative? I'm assuming the ball is just being thrown stright down... I'm using the formula d=V(initial)*t+1/2a*t^2 I'm getting -24.9...

### Help...pHysics

a ball is thrown at 15m/s at an angle of 30 degrees to the horizontal , how far does it travel horizontally before making contact with the ground? I don't remember very well, but I believe the formula you need is: x0 = -.5at^2 + vt + x where x0 is the initial distance (a.k.a...

### Chemistry

Calculate the empirical formula and molecular formula of a compound that contains only carbon, oxygen and hydrogen and has a molecular mass of approximately 90. g/mol. Upon combustion of 12.0g of the compund with an excess of oxygen, the yield was 1.2 g of water and 5.87 of ...

### math derivative please help

the derivative of 2x^e is zero right or no? do i have to use the log formula 2 x^e is x to the power 2.718.. It is not a constant and therefore the derivative is not zero. Use the formula for the derivative of x to a power that is constant (x^a). The formula for that may ...

### PHYSICS - Waves

Can someone tell me how to get the answer to this question? Just a formula would be great. It's on my physics study guide for my unit test. Sound waves with a wavelength of 2.5 m are traveling 7.5 m/s. How many waves will pass a microphone in 10.0 s? (Answer 30 waves)

### Math

Use the quadratic formula to solve each of the following quadratic equations... 1. 2x^2-5x=3 2. 3x^2-2x+1=0 Rearrange the equation in quadratic formula form. 2x^2 -5x -3 = 0 Then use the formula. Tell me what you don't understand about it if you don't know what to do next. I ...

### AP Physics

Hello I was trying to find the proof of the formula x = x0 + v0t +.5at^2 were the zeros are subscripts My text book dosen't explain it that well. ok well it involves the formula for average velocity aver velocity = 2^-1(v0 + v) were the zero is a subscript and this is just ...

### math

when dealing with sigma notation, if i enclose my formula with parenthesis,does it make it different from a formula with no parenthesis? plz help, I saw this in regents prep webpage and I just didn't see any difference, but they say that the parenthesis changes the result.

### PHYSICS - Waves

Can someone tell me how to get the answer to this question? Just a formula would be great. It's on my physics study guide for my unit test. It takes 2.30 s for an echo to come back from a sound wave sent to the bottom of a 25 degree C lake. How deep is the lake at this ...

### physics

At what speed do you approach your image if you walk towards a plane mirror at 1 m/s ? I am not looking for this to be answered for me. I am just looking for how to figure it out. Is there a specific formula to use?

### physics

At what speed do you approach your image if you walk towards a plane mirror at 1 m/s ? I am not looking for this to be answered for me. I am just looking for how to figure it out. Is there a specific formula to use?

### physics

At what speed do you approach your image if you walk towards a plane mirror at 1 m/s ? I am not looking for this to be answered for me. I am just looking for how to figure it out. Is there a specific formula to use?

### Software - Excel

Hi, Im doing my maths coursework andI need to type in a formula and press enter and then I need "FILL DOWN (CTRL D)". How do I do this? I don't want to get the same number from what Ive alreay typed in on the previous cell, I just want that formula to function in the rest of ...

### CAN SOMEBODY PLS GIVE ME THE FORMULA FOR THIS!!???

google is being a pain right now so i cant find a simple answer, its giving me all these complex examples instead I JUST NEED THE FORMULA FOR FINDING THE LATERAL AREA OF A SQUARE PYRAMID. THAT'S ALL. thank you.....

### Geometry

What formula should be used to derive the equation of a parabola given its focus and directrix? • The distance formula ?? • The midpoint formula • y = ax2 + bx + c • The area formula for a circle

### Physics

a dentists drill starts from rest. after 5.39 seconds of constant angular accleration, it is rotating at a rate of 2.85E4 rpm. through what angle did it rotate in the process? (i just don't know what formula to use)

### Physics

You plan to build a large, cheap cyclotron using the Earth's magnetic fields(1x10^-4 T) and orbiting just above the Earth's atmosphere (radius 5.7 x10 ^6 m) What energy, in volts, should protons be given to just circle the earth? q= 1.6 x10^-19 C, m= 1.67x10^-27 1 have used ...

### Physics

I need some help getting a formula. I remember in class u get this really wierd looking equation like Vicosg-((vsin(pheta))/2g) I think this is what the equatin is when I'm asked to "Derive a formula for the Range of a projectile based on Vi and the Launch angle, pheta. State ...

### physics

I need some help getting a formula. I remember in class u get this really wierd looking equation like Vicosg-((vsin(pheta))/2g) I think this is what the equatin is when I'm asked to "Derive a formula for the Range of a projectile based on Vi and the Launch angle, pheta. State ...

### algebra

how would i work out the following problems solve each formula in terms of the given variable 1. 5d-2g=9 ;g The formula A=2h(l+w) gives the lateral area a of a rectangular solids with length l, width,w and height h. 2. solve this formula for h 3. solve this formula for l The ...

### Physics

Why they need to use gravitational constant in the formula? What would be the problem if the formula is like F=m1*m2/d2 ?

### Algebra

can show me how to do this with out just squaring 3x^(1/2) - x - 6 = 0 how do i do this and solve for x with out just squareing and using quadratic formula. I was never taught the proof of the quadratic formula and would like to know how to do with without squareing and if ...

### math formula?

Based on an average cost per year to attend a university or college of your choice, how much should be invested each month to obtain the goal of that amount (the goal is 40,000$)? Assume 6%/a compounded monthly for 5 years. I don't need the answer, just the formula please!

### Physics E=mc^2

Can you explain what formula (like quadrantic..whatever formula) and what is it for. The equation E=mc^2. Thanx!

### physics

you are given the formula d=30-q. use it to find a formula for q using d.

### Physics

A 2.5 kg object is whirled in a vertical circle whose radius is 0.89 m. If the time of one revolution is 0.94 s, the magnitude of the tension in the string (assuming uniform speed) when it is at the top is I just need the formula and it doesn't even have to be manipulated.

### Chemistry

An unknown gaseous hydrocarbon contains 85.63 % carbon. If its density is 0.488 g/L at 0.355 atm and 100°C, what is the molecular formula of the gas? I can't figure this out. By assuming the total mass to be 100g, I get 85.63g C and 14.37g H which I then used to get the ...

### physics,

A 4.0kg object is supported by an aluminum wire of length 2.5 m and diameter 1.8 mm How much will the wire stretch? I need the breakdown of how this is being solved so I can figure it out in the future. Even just a formula will do

### Physics(Please help)

1) The velocity of a diver just before hitting the water is -11.8 m/s, where the minus sign indicates that her motion is directly downward. What is her displacement during the last 1.06 s of the dive? I know that the formula for displacement is deltaX= x - x0. Would I do -11.8...

### Physics

Whats the difference between frictionless and friction in a way of solving? Like in formula, and what formula should use

### Physics

A woman driving her car approaches an intersection and begins to accelerate just as the traffic light turns green. Her velocity is the function of time described by the equation: v(t)=2t^2-8t+10 (A) Use calculus to find her instantaneous acceleration at t=8.0seconds (B) Use ...

### physics

What is the general formula for energy?When asked to write formula for energy in general without specifying kinetic or potential or work can we write eienstien's e=mc2 formula?

### math

Q. Naomi has a formula that allows her to convert Clesius temperatures to Farenheit temperatures. She needs a formula for converting Fahrenheit temperatures to Celsius tempertures. What advice can you give her? I am thinking that I just reverse the preocess of the first ...

### Calculus

Posted by Aletha on Sunday, March 18, 2007 at 6:51pm. After t hours of an 8-hour trip the distance a car travels is modeled by: D(t)= 10t + (5)/(1+t) - 5 where D(t) is measured in meters. a) derive a formula for the velocity of the car. b) how fast is the car moving at 6 hours...

### Physics

The mass of the object was 8 kilograms. The object was acted on by a foce of 20 angle 80degrees newtons. What was the acceleration of the object? Please walk me through the steps instead of just suggesting a formula.. Thank you!

### Physics

A 5.00×10^5-kg rocket is accelerating straight up. Its engines produce 1.250×10^7 N of thrust, and air resistance is 4.50×10^6 N. What is the rocket’s acceleration? I just need the formula for finding the acceleration.

### Physics

The liquid in the tube has a density of 1.48 g/cm^3 . The atmospheric pressure is 1.013 X 10^5 newtons per square meter. What is the pressure P in the container? Please walk me through your steps, don't just suggest a formula. Thank you very much.

### accounting-explain

Create a table comparing the gross profit for this product’s sales for the month of June under each of the two formulas (1) FIFO and (2) average. Calculate the gross profit margin under each formula. Can you please help me wiht this question. just explain the questions. i ...

### Science (Physics)

Two resistors 3ohms and 6ohms are connected in parallel across a 6V battery, what is the current flow through the 3ohms resistors? Just the formula please.

### Physics

A hypothetical spherical planet consists entirely of iron (p=7860 kg/m^3). Calclate the period of a satellite that orbits just above its surface. I started out with the pressure formula P=M/V, but i kept subbing in other formulas, but i get stuck..can someone help me? thanks.

### Physics

A mass m is traveling at an initial speed of v0 = 25.0 m/s. It is brought to rest in a distance of 62.5 m by a force of 15.0 N. The mass is? Could you just enlighten me on what formula to use please.... little lost although I think the answer is 37.5kg am I anywhere close?

### physics

Two sounds, one of 200 Hz and one of 194 Hz occur at the same time. What beat frequency do you hear? Show your calculations I'm not looking for someone to do my homework for me. I just don't know what formula to use to figure it out.

### Calculus

Hello...i just had a quick question...its probably something easy to get...maybe i am thiking too hard...but the question is estimate the volume of solid that likes above the square R=[0,2] * [0,2] and below the elliptical paraboloid z=16-x^2-2y^2..divide r into four equal ...

### Physics Lorentz contraction

This seems like a pretty straightforward question but it's just not making sense at the moment. A meter stick is projected into space at so great a speed that its length appears to have contracted only 50 cm. How fast is it going? So you want the velocity, v. (in terms of c). ...

### Physics, help please!

A hypothetical spherical planet consists entirely of iron (p=7860 kg/m^3). Calclate the period of a satellite that orbits just above its surface. I started out with the pressure formula P=M/V, but i kept subbing in other formulas, but i get stuck..can someone help me? thanks.

### Physics

The question said find the speed of sound at a certain temperature. What formula would you use? Could someone tell me the formula so I could do the questions that correspond.

### Chemistry

What acid and what strong base would react in aqueous solution to produce the following salts in the formula equation? Write the balanced formula equation for each reaction. a) potassium perchlorate b) cesium nitrate c) calcium iodide I don't need just the answers, I'm ...

### Physics

Two resistors 10ohms and 5ohms are connected in parallel across a 15V battery. What is the potential difference across the 10ohms resistor. I do not need the answer just the formula and how to figure out the problem. Thanks.

### Physics

A 390 kg motor boat, moving down a frictionless ramp, is connected over a massless pulley to a 193 kg counterweight that rests on a horizontal surface. The ramp is inclined by 28.6°, and the co-efficient of kinetic friction between the couterweight and the horizontal surface ...

### physics

how large a force is required to accelerate a 1300 kg car from rest to a speed of 20 m/s in a horizontal distance of 80 m ? I'm trying to find the formula and then plug in the correct #'s into the formula.

### math

Find the area of a circle with center (-3, -4) that passes through the point (5, 2). First use the distance formula to find the radius of the circle. Use π = 3.14. ~ I did the distance formula and got 28 now i just dont know what to do after that please guide me

### Physics

"Luke Skywalker mixes 250g of hot water (75 deg C) with 500g of cool water (15 deg C). What is the final temperature of the water?" If someone could just give me a formula, I'd be fine. :)

### Math

I have some problems that I don't understand. Please help me. Solve the formula for the specified variable. s=2ðrh + 2ðr^2 for h f= (9/5)c+32 for c A=P(1+nr) for r for H i don't know what that notation is so I'll leave that alone and maybe someone else can help you with that...

### chemistry

Determine the hydroxide ion concentration in a solution that is 0.0004 M HCl. Answer in units of M. I have no idea how to start, I just need to know what I need to solve for and hoe to set it up, I know the formula pOH^-=-log[OH^-] I just don't know where to plug things in and...

### Pre-Algebra

Please help to solve to find x,y 1. y=7x-3 2. 4x+2y=8 Take the value of y in the first formula and substitute it for y in the second formula. Solve the second formula for x. Once x is found, solve for y in the second formula. Check by inserting both values into the first ...

### visual

I need some explanation about fonts and how to use them. Need to complete an assignement requesting that fonts are used for shpwing contrast in 7 dimensions. My problem is that I don't know how to determine the size of the letters by using a formula. I could measure each ...

### Physics

Find the magnitude of the gravitational attraction force that the earth exerts on a 62-kilogram astronaut who is 8.00 X 10^7 meters away from the center of the earth. Useful numbers: M^earth=5.98 X 10^24kg; G=6.67 X 10^-11 N*m^2kg^-2 Please walk me through your steps, don't ...

### Geometry Honors

On the bridge of a ship at sea, the captain asked the new, young officer standing next to him to determine the distance to the horizon. The officer took pencil and paper, and in a few moments came up with an answer. On the paper he had written the formula d = 3.6 square root h...

### chemistry

A 2.000g sample of magnesium was burned in air to form an oxide. After the product was purified it was found to have a mass of 3.317g. What is the empirical formula for the product? I know how to find a empirical formula, I just don't understand what masses I am supposed to ...

### Physics

Please help- A small fish is dropped by a pelican that is rising steadily at 0.50 m/s. How far below the pelican is the fish after 2.5 s? Answers. 61m 29.3 30.6 1.1m I just started school and I'm totally lost-If someone could explain formula to me I'd really appreaciate it ...

### chem

could anyone tell me why the molecular formula of agas is not always the same as the empirical formula tnx It may be a dimer or a trimer. For example, CH is the empirical formula for acetylene but the molecular formula is HC(triple bond)CH or C2H2.

### Chemistry Check

the title of this worksheet is Ternary Nomenclature: Acids and Salts I just want to make sure that this is right: Name of Acid: hydrobromic acid Formula of Acid: HBr Name of Anion: bromide I think it is because I googled these. But, just in case...

### pHYSICS

iTS A HARD QUESTION. wHAT IS THE FORMULA FOR SPEED? sOLVE TWO SPEED PROBLEMS WITH A DIFFERENT MISSING PART OF THE FORMULA.

### physics help!!!

How do you find the speed of sound wave using the formula for speed when you have 195 Hz 89.4m in 0.311s. Help what formula to use what's the answer???

### Physics

Why is sin theta used in the torque formula while the work formula uses cosine theta?

### Science

An object mass m1 falls from a height of h1. a. Write a formula for the velocity of the object just before it stikes the ground in terms of g,m1,and h1. b. Write a formula for the velocity of the object at the half way point in terms of g,m1, and h1.

### Physics

I have a forumla question. I have this formula x=1/2t^2. Is this the formula to find the acceleration that is caused by gravity?

### Math Formula Part 2/3

I've done the second part to the Math Formula post. It was determine the 19th term of the sequence which I did. Now it says..which of the numbers -268 and -350 are terms of the sequence? I was doing something like this: tn = -7 (-268) +19 I was plugging -268 as n. But that ...

### Physics

A soccer ball accelerates from rest and rolls 6.5 m down a hill in 3.1 s. It then bumps into a tree. What is the speed of the ball just before it hits the tree? A formula to answer this question would be fine; you don't have to solve the whole thing.