What is Initial: Definition and 1000 Discussions

In a written or published work, an initial or drop cap is a letter at the beginning of a word, a chapter, or a paragraph that is larger than the rest of the text. The word is derived from the Latin initialis, which means standing at the beginning. An initial is often several lines in height and in older boscene are known as "inhabited" initials. Certain important initials, such as the Beatus initial or "B" of Beatus vir... at the opening of Psalm 1 at the start of a vulgate Latin. These specific initials, in an illuminated manuscript, were also called initiumsIn the present, the word initial commonly refers to the first letter of any word or name, the latter normally capitalized in English usage and is generally that of a first given name or a middle one or ones.

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  1. B

    Projectile motion without time and initial velocity

    Homework Statement A shotputter projects the shot at 42 degrees to the horizontal from a height of 2.1 m. It lands 17 m away horizontally. Next, he gives it the same initial speed but changes the angle to 40 degrees. What effect does this have on the horizontal range? Homework...
  2. D

    Sailboat Acceleration Calculation

    Initial Acceleration? The force exerted by the wind on a sailboat is approximately perpendicular to the sail and proportional to the component of the wind velocity perpendicular to the sail. For the 950-kg sailboat shown in the figure below, the proportionality constant is Water exerts a...
  3. M

    Find initial velocity with accelration as a funt. of t

    Homework Statement The acceleration of a particle is given by a_{x}(t)= - 1.94 m/s2 +( 3.05 m/s3 )t. Find the initial velocity v_{0x} such that the particle will have the same x-coordinate at time t= 4.00 s as it had at t=0. Homework Equations vx= v0x + the integral ax dt The...
  4. J

    Find Initial Velocity: Time = 2.58s, Distance = 9.87m

    Homework Statement Find the initial velocity of a ball with the time=2.58 seconds and distance of 9.87 meters Homework Equations vi=v-at The Attempt at a Solution I don't understand how to find the acceleration with just time and distance is it just 9.8 m^3/second?
  5. P

    Rearranging the Projectile Motion Base Quadratic Formula for Initial Velocity

    Homework Statement What I'm supposed to do is to rearrange the this formula -16t^2+Vt+h and solve it for V. V= Initial Velocity t= time (throwing the ball in a parabolic arc) h= height I know what the height is and it is 6ft. I also have the time which is 2.03 seconds. How do I rearrange...
  6. J

    Big Bang Initial Size: Evidence & Technologies?

    I have not learned of any evidence that would help me decide between these two theories: 1. The big bang was an explosion of an object smaller than an atom. 2. The big bang was an explosion of an object larger than a base ball. Does our current technology permit us to find such evidence...
  7. B

    Find Initial Velocity Formula | 30.0m Height

    What formula would I use to find the initial velocity? An object is thrown vertically into the air and reaches a height of 30.0 m. Neglecting air friction, what was the object’s initial velocity? I don't quite remember how to do this. Is it 30.0m / 9.81[m/s]^2?
  8. C

    Initial Velocity of a Soccer Ball

    I am trying to find the initial velocity of a soccer ball , but I found this equation and do not understand how it came about: [PLAIN]http://superforbrain.com/files/vBall.PNG This is supposed to give you the velocity of the ball right after its kicked, using the mass of your leg, velocity of...
  9. M

    Wave equation with initial and boundary conditions.

    Hallo Every one, Homework Statement y(x,t)=sin(x)cos(ct)+(1/c)cos(x)sin(ct) Boundary Condition: y(0,t)=y(2pi,t)=(1/c)sin(ct) fot t>0 Initial Condition : y(x,0)=sin(x),( partial y / Partial t ) (x,0) = cos(x) for 0<x<2pi show that y(x,t)=sin(x)cos(ct)+(1/c)cos(x)sin(ct)...
  10. R

    Projectiles question: acquiring initial velocity from force+mass

    Hello, this may be a rather simple question but it's beginning to irritate me: If I were launching a marble of, say, 10g (0.010 kg) from a marble launcher with a force of 5N (tell me if this is realistic or not) at an angle of 15 degrees then how would I go about finding the initial velocity of...
  11. T

    Initial Temp Homework: Copper in Water, Aluminum Cup

    Homework Statement A student doing an experiment pours 0.150 kg of heated copper **** into a 0.375 kg aluminum calorimeter cup containing 0.200 kg of water. The cup and water are both initially at 25 C. The mixture (and the cup) comes to thermal equilibrium at 28 C. What was the initial...
  12. X

    Initial Speed of a Golf Ball Hit at 45° Angle

    A golf ball is hit and makes a 45o angle with the horizontal as it leaves the tee. It lands 200 m away. What was the ball’s initial speed? I though i know this well but i don't even know how to set this up
  13. F

    Spring cannon, initial velocity, and compression

    Homework Statement Part a.) You launch a 0.5 kg water balloon with a spring cannon in order to his someone 20m away. The spring in the cannon has a spring constant of 350 N/m. The spring cannon fires the balloon at a 30 degree angle with respect to the ground. What is the initial velocity...
  14. I

    Find solution with initial value

    y'' - ty' + y = 1, y(0) = 1, y'(0) =2 I'm trying to solve by Laplace Transform and I got stuck at the end.Anyone can help me to solve it?
  15. B

    What was the initial temperature of the copper?

    Homework Statement 8.0 g of aluminum at 200 C and 22 g of copper are dropped into 55 cm^3 of ethyl alcohol at 15 C. The temperature quickly comes to 28 C. What was the initial temperature of the copper?Homework Equations The Attempt at a Solution tried using calorimetry equations, not getting...
  16. D

    Please check my work on initial value problem. thank you

    Homework Statement Solve the following initial value problem. Sketch the solution and describe its behavior as t increases. y'' + 4y' + 3y = 0 y(0) = 2 y'(0) = -1 1st i solved the characteristic: r^2 + 4r + 3 = 0 r = -1 r = -3 then the general solution is; y = c_1e^-x +...
  17. fluidistic

    Finding a solution to Maxwell's equations from initial datas

    Homework Statement Suppose we know that B(\vec x ,t) is a solution to Maxwell's equations in vacuum and furthermore we know that E(\vec x , 0)=E_0. How do we find E(\vec x , t)? Homework Equations \nabla \cdot E = 0. \nabla \cdot B =0. \vec \nabla \times \vec B = \left ( \frac{-1}{c}...
  18. M

    Initial Acceleration of a Center of Mass

    Homework Statement A uniform rod of length 1.25 m is attached to a frictionless pivot at one end. It is released from rest from an angle θ = 23.0° above the horizontal. Find the magnitude of the initial acceleration of the rod's center of mass. I keep getting the wrong answer...
  19. B

    Calculate Initial Velocity of Object Thrown Vertically

    An object is thrown vertically into the air and reaches a height of 30.0 m. Neglecting air friction, what was the object’s initial velocity? What would the equation be for this question? I know that: Height: 30.0m Gravity: 9.81m/s I'm not quite sure what else I need to figure this...
  20. X

    Impulse - Initial velocity of bullet

    1. Homework Statement [/b] Bullet B weighs 0.5 oz and blocks A and C both weigh 3 lb. The coeffient of friction between the block and the plane is \muk = .25. Initially the bullet is moving at v0 and blocks A and B are at rest. After the bullet passes through A it becomes embedded in block C...
  21. A

    Calculate distance given accleration, initial & final speed

    dleted due to error
  22. B

    Finding Initial Velocity from Rate, Distance, and Time

    Hi guys! We started integral word problems today. I am very confused and could use some help with the following; A particle is moving along a straight line accelerating at a constant rate of 5 m/s^2. Find the initial velocity if the particle moves 60m in the first 4 seconds. Now, I...
  23. H

    Initial Number Density of Ink Particles

    Homework Statement Suppose an initial number density of ink particles (i.e. number per unit length) is given by: f(x) = 2Nx ; for 0 < x < 1 f(x) = 0 ; otherwise. Suppose also add a point source containing N molecules at the point x = − 1. (a) Showing that the initial total...
  24. fluidistic

    Classical mechanics, initial conditions question

    I just started CM (I had 2 classes until now) and the professor said that if you know the position and velocity of say all the particles, then you know how the system will evolve. This, I already read and knew. I've probably a common question so feel free to redirect me to any similar...
  25. A

    Elementary Astronomy - Initial Mass Function

    Homework Statement Estimate the number of low and high mass stars that you expect to find in our Milky Way Galaxy now. Use the following (very approximate but about right numbers) for your estimate: The Star Formation Rate in our galaxy is approximately 1 Solar Mass per year and virtually...
  26. S

    Undetermined Coefficients Initial Value Question

    Homework Statement y''-4y=60e4t y(0)=9 and y'(0)=2 Homework Equations none in particular The Attempt at a Solution First I solved for the auxiliary equation. r2-4r r(r-4) r=0, 4 So the general solution for the homogenous form is C1e0x+C2e4x where C1 and C2 are unknown coefficients to...
  27. G

    Initial velocity using angle, distance, time

    Homework Statement From the edge of a rooftop, a boy throws a stone at an angle of 25.0 degrees above the horizontal. the stone hits the ground 4.20 seconds later, 105 m away from the base of the building.(ignore air resistance). Find the initial velocity of the stone, the intial height from...
  28. N

    Differential Eq. Initial Value Problem (separable/partial fractions/hyperbolic)

    Homework Statement dx/dt = 2*(1-x^2) with x(0)=0 Obtain the analytic solution to the IVP. Then, obtain the terms in the Taylor series up to and including the t^5 term. Note: should be possible to express x(t) in terms of hyperbolic functions. The Attempt at a Solution...
  29. M

    How to calculate the initial rate of dischrage of a capacitor.

    Homework Statement A) A DMM with its 10M(ohms symbol) internal resistance is connected to a 9.9 microF capacitor that has been charged to 10 V. Calculate the intial rate of discharge of the capacitor through the DMM in micro-Coulombs per second. Hint: You do not need exponentials for this...
  30. T

    Finding the acceleration when initial velocity is not known.

    Homework Statement In 2.0 s, a particle moving with constant acceleration along the x-axis goes from x = 10 m to x = 50 m. The velocity at the end of this time interval is 10 m/s. What is the acceleration of the particle? Homework Equations kinematic equations The Attempt at a...
  31. G

    Not sure what the initial temperature is

    Homework Statement At what temperature will aluminum have a resistivity that is three times the resistivity of tungsten at room temperature? Rt=5.6 X 10^-8 ohm*m (The resistivity coefficient of tungsten at 20 degrees celcius) R0=1.59 x 10^-8 ohm*m (The resistivity coefficient of...
  32. C

    Solving for initial velocity Projectile Motion

    Homework Statement A rock is thrown from the top of a twenty meter high building at the angle 53 degrees above the horizontal. IF the horizontal range of the throw is equal to the height of the building, what is the speed of the rock? How long is it in the air? What's the velocity of the rock...
  33. B

    Initial Velocity of Dog Jumping 0.20 m: 0 m/s

    Homework Statement A dog can jump to a height of 0.20 m. What is the initial velocity of the dog? Homework Equations v=v0+at The Attempt at a Solution I'm not sure if this is suppose to be a trick question. Are they talking about the gravitational acceleration? v=v0+at v0= 0...
  34. S

    Finding the charge and initial position, electric potential problem.

    The electric potential a distance r from a point charge q is 2.40×104 V. One meter farther away from the charge the potential is 6500 V. Homework Equations V=kq/r The Attempt at a Solution 6500 = 8.99x10^9 (q) / 1m q = 7.230 x 10^-7 then, r= kq/v r= 8.99x10^9 (7.230 x 10^-7)...
  35. S

    Find Initial Velocity (With Wind Factored In)

    [Please Help!] Find Initial Velocity (With Wind Factored In) I can't do it =\. Q: What equation would I use to find initial velocity? Given: Wind Speed, Wind Angle, Coordinates of Origin, Coordinates of End Point, (Distance), Projectile Mass, Theta (Angle to Use) Here's my repost from a...
  36. H

    1.05 g MgO is added to 110.15ml HCL with an initial temperature

    1.05 g MgO is added to 110.15ml HCL with an initial temperature of 21.5 degrees Celsius and a final temperature of 34.5 degrees Celsius. calculate the KJ of energy released for the reaction. assume that 4.18 J of energy is required to change the temperature of one mL of solution to one Celsius...
  37. E

    Heat Equation Initial Conditions

    Greetings all, I have a question in regards to my initial conditions. The problem as given is: ut=uxx with u' = 0 at x=0 and u=0 at x=L I was also given u={1 0<x<L/2, 0 L/2<x<L I understand the set up of the problem and the solving of it for the most part, however I'm having...
  38. M

    A golfer gives a ball a maximum initial speed of 39.9 m/s.

    What is the longest possible hole-in-one for this golfer? Neglect any distance the ball might roll on the green and assume that the tee and the green are at the same level. in m and: What is the minimum speed of the ball during this hole-in-one shot? please explain your answers :D...
  39. W

    The object at rest has an initial velocity >0?

    Homework Statement A grasshoopper jumps 1.00 m from rest, with an initial velocity at a 45.0 degree angle with respect to the horizontal. Find the initial speed of the grasshopper (answer is 3.13 m/s) The maximum height reached (answer is .250m) Homework Equations...
  40. P

    Proving initial speed of a particle

    Homework Statement Particle A of mass 1kg is at rest 0.2m from the edge of a smooth horizontal table 0.8m high. It is connected by a light inextensible string of length 0.7m to particle B of mass 0.5kg. Particle B is initially at rest at the edge of table closest to A but then falls out...
  41. H

    Initial Mass Function - how many stars are born

    Hello everyone. I have a problem listed below. I am very lost due to the fact that my teacher literally just gave us this problem to do and expects us to hand it in soon without even teaching/talking about this topic in class. I did some research over the Internet on IMF, but still am pretty...
  42. B

    Initial acceleration of an object dropped above the earth

    A object is dropped from a height of 5.29 X 10^6 m above the surface of the Earth. What is its initial acceleration. The acceleration of gravity is 9.81 m/s^2 and the radius of the Earth is 6.37 X 10^6 m. Answer in units of m/s^2. So my problem is that I was sick today and missed the...
  43. U

    Initial Velocity of 1.52 m High Jump Record

    Homework Statement Assuming the best high jump record from a standing position in a school was 1.52 m, what initial velocity was needed for this jump? neglect any sideways motion. Homework Equations velocity equation The Attempt at a Solution I don't really understand how to do...
  44. N

    Determining initial velocity and instant velocity

    Homework Statement The acceleration of a particle is given by ax(t) = 2.90t - 2.06 Q. Find the initial velocity v0x such that the particle will have the same x-coordinate at time t = 4.06 as it had at t = 0. Homework Equations vx = v0x + \intaxdt evaluated from 0 to t. x = x0 +...
  45. N

    Why Is the Voltage on Both Capacitors 12 Volts in This Circuit?

    http://i48.tinypic.com/1o4ow9.jpg why in this circuit they say that in t<0 the voltage on both capacitators is 12 volts?? if both points of each capacitators is connected to the voltage source directy then 12 volts is ok. but here we have a resistor between them this resistor drops...
  46. J

    Projectile motion question and minimum initial speed

    Homework Statement Assume acceleration due to gravity is 9.8ms^-2 It has been said that in his youth George Washington threw a silver dollar across a river. Assuming that the river was 75m wide, (a) what minimum initial speed was necessary to get the coin across the river (b) how long was...
  47. science_rules

    Finding the initial velocity of a projectile, given time, an angle, and distance

    Homework Statement A baseball is thrown at 20 degrees to the horizontal. The ball travels a horizontal distance of 18 meters when it returns to the same level as the instant it had been thrown. The total time it traveled between these points is 2.1 seconds. Determine the initial velocity (Vo)...
  48. T

    Find Initial Velocity of Cannonball Fired from Cannon

    Homework Statement A cannon shoots straight up into the air a cannonball which reaches a maximum height of 600m. What was the initial velocity of the cannonball when it was fired from the cannon. (Note: this problem contains all the information necessary to be solved.) use g=10m/s^2...
  49. S

    Finding An Initial Speed, Intro to Physics Question

    A boy tosses a coin straight up to 2.8 m. Suppose the height when the coin leaves his hand is 1.2 m. What was the initial speed of the coin when it left his hand? I'm just confused as to what equation to use. And I don't know whether to assume the acceleration is -9.8 m/s^2. Thanks.
  50. B

    Conservation of momentum with initial velocity of 0

    I'm having a bit of trouble understanding the concepts of momentum conservation. Let's say I'm standing on a frictionless surface and I throw a 3kg brick horizontally with a velocity of 4m/s. In this scenario I can see that I'm going to be repelled backwards at a velocity of 12/my mass in kg but...
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