physics please HELP !

128,227 results, page 47

Please solve it for me!! Please...Maths

Solve for the value of x: 6log(x^2+1)-x=0

Algebra

X=1/2at^2 Solve for a Solve for t Can you please show me how to do this please Thank u

Algebra 1 Please Help

simplify (2√5+3√7)^2 step by step. please tell me how to do this

Spanish-Check please! I need help

Please check-I'm having a problem interpreting these questions and I have to answer them for homework. Could you please check my translation I'm not sure what these questions mean and I have to answer them for homework ¿Qué necesitas para comer en cereal?does this ask what I...

Physics(Please help)

1)A 1180-kg van, stopped at a traffic light, is hit directly in the rear by a 753-kg car traveling with a velocity of +1.81 m/s. Assume that the transmission of the van is in neutral, the brakes are not being applied, and the collision is elastic. What is the final velocity of...

physics

A 24 kg beam is attached to a wall with a hinge and its far end is supported by a cable. The angle between the beam and the cable is 90 degrees and the beam is inclined at an angle of 13.6 degrees with respect to the horizontal. What is the magnitude of the force that the beam...

Physics please help!!!!!!!

A ball is thrown vertically upward (assumed to be the positive direction) with a speed of 21.0 m/s from a height of 9.0 m. (a) How high does the ball rise from its original position? (b) How long does it take to reach its highest point? (c) How long does the ball take to hit ...

Physics(please help, I'm stuck)

A particle with a charge of -1.4 μC and a mass of 2.9 x 10-6 kg is released from rest at point A and accelerates toward point B, arriving there with a speed of 22 m/s. The only force acting on the particle is the electric force. What is the potential difference VB - VA ...

Physics/Barycentre

I read the Earth/Moon Barycentre is located 74/100ths from the centre of the earth towards the earths surface. As the moons orbit varies from Perigee to Apogee by more than 30,000 miles I would have thought the Barycentre would move around according to the moons position in ...

Math Help (URGENT X10)

This is really urgent so please please please help. The height(H) of an object that has been dropped or thrown in the air is given by: H(t)=-4.9t^2+vt+h t=time in seconds(s) v=initial velocity in meters per second (m/s) h=initial height in meters(m) H=height h=initial height ...

Physics

Three arrows are shot at different angles. A red arrow is shot at 30degrees, a blue arrow is shot at 45degrees, and a yellow arrow is shot at 60degrees. A) Which arrow goes the farthest? B) Which arrow goes the highest? C) Which arrows go the same horizontal distance? D) Which...

Physics

1. A 0.200kg ball moves with a velocity of 0.3m/s. It collides with a second ball that is at rest and has a mass of 0.1kg. After the collision, the velocity of 0.1kg ball is 0.26m/s. What is the new velocity of the first ball. Please indicate which equation you use, what ...

Physics

A particle moved along the x axis with a constant acceleration of -85.0 meters per second squared. The initial position of the particle was at the origin and its initial velocity was +325 meters per second. Find the position of the particle at T=4.0 seconds. Please walk ...

Physics

A camera falls from a blimp that is 399 m above the ground and rising at a speed of 9.75 m/s. Find the maximum height reached by the camera with respect to the ground. The acceleration of gravity is 9.8 m/s^2.Answer in units of m. b)Find the speed at which it hits the ground....

Physics

Sense I'm not taking Physics C but Physics B I guess I'm not expected to find the value of the drag force sense that would involve soem calculus. I just have a question though. If we performed a lab outside wouldn't the drag force vary from time to time sense the wind could ...

chemistry

please please please help me balance these two equations... 1. K2Cr2O7+H2C2O4.2H2O--> K[Cr(H20)2(C2O4)2].2H2O+CO2 2. K2Cr2O7+H2C2O4.2H2O--> K[Cr(H20)2(C2O4)2].3H2O+CO2

Physics

A tennis ball is thrown horizontally from an elevation of 20.60 m above the ground with a speed of 21.0 m/s? Where is the ball after 2.00 s? vertical m from the ground? If the ball is still in the air, how long before it hits the ground? (If the ball is not in the air, enter 0...

math

The circumference of a sphere was measured to be 76 cm with a possible error of 0.2cm. 1. Use differentials to estimate the maximum error in the calculated surface area. Please round the answer to the nearest tenth. 2. What is the relative error in the calculated surface area...

math....please help

Define what it mean when two angles are complimentary. I'm not sure what it means...please help me. Thank you! (Broken Link Removed) complementary (not complimentary) <~~ comes from the word "complete" =) We can't have angles complimenting each other, can we?

english

the unknown citizen. Please clarify your three words and ask it as a question. what is the situation [speaker, setting, audience and occasion] in the poem the unknown citizen by w.h. auden. Please tell us your thoughts and we'll be glad to critique it for you. 2.

To Cheryl

I removed your post about tooth whitening because it doesn't have anything to do with school work. Please see a doctor about your symptoms. can u help me Please click Post a New Question and explain how you'd like us to help you.

Science

I desperatly need help, i need to know everything there is to know about the recovery of ALUMINIUM that is recovered from BAUXITE ORE, the process, the cost, everything. Please, if you have any knowledge or know of any GOOD webpages, please post them here. thanks:)

social studies(World Geogrophy)

a straight is a narrow body of water connecting two larger bodies of water. Find an example of a strait on a map, and write the example...... PS.I DO NOT UNDERSTAND.. PLEASE PLEASE HELP!!!!!

math

please correct these for me 18. the number of quarts you use to paint your room (are whole numbers or integer or rational number the most reasonable for this situation) A. yes 24. us <=> to compare 2/4 1/6 is it = 36. find the absolute value -4/14 is it -0.64 please ...

Match, Calculus

help Please... Differential Equations Problems... please give the complete solution, so that i can understand how it is derived... tnx in advance, god Bless... Here are the problems : 1.) y dx + (2x+3y)dy = 0 2.) (2xy + y^(2) ) dx - 2x^(2) dy = 0 ;y = e, x = e 3.) y( x^(2) + ...

ECONOMICS HELP PLEASE

i need to find any sources (articles) dealing with factory orders, employment levels, foreign companies, and factory closures... because I need to write a page of each one of them and what it means also...please help me on it

social studies

It says in my textbook that I have to predict what might have happened if the Maya civilization had continued into the present day and then it says to explain. Ms.Sue please, please help me! I need help!!!!!!!!

inverse trig HELP PLEASE!!

Write the general solution to y = arcsin (0.6428). 40°±360°k 140°±360°k 220°±360°k 320°±360°k How do I find the right answer? I am like seriously stuck. I need help please.

Chem help-please

At o degrees celcius, a 1.0-L flask contains 5.0 x 10^-2 mol N2, 1.5 x 10^2 mg O2 and 5.0 x 10^21 molecules of NH3. What is the p00artial pressure of each gasnand what is the total pressure in the flask? I need to understand how to calculate it, formula and how to get the ...

Algebra 1B

Please help I am so confused... Question: supposed that y is directly proportional to x. a) use the given info to find constant of proportionally k. b) then use y=kx to find y for x=6 y= -62 when x=5 Please help.. thank you this is all I have so far. not sure if I am correct. ...

aig math

the sum of 2 numbers is 77. one number is 2 1/2 times as big as the other number.find the difference between the 2 addends.please show how you got your answer. my answer is 72.6, am i right if not please tell me why and how.

Computer (Programming Logic and Design)

How do i Create a program that determine the shipping cost for an order based on the following table: From To Price  $0.00 $19.00 $2.95  $20.00 $49.99 $3.95  $50.00 $74.99 $4.95  $75.00 $1000.00 $Free I don't understand how to do this...Would anyone please help create a ...

calculus

I have two questions please 1.for the given equation list the intercepts and test for symmetry 49x^2+y^22=49 2. for the midpoint of the line segment from p_1 to P_2 is (-5,4). if P_1=(-2,2) what is P_2? Please show work

math- please help

a copy machine makes c copies in m minutes according to the equation c=60m. what is the unit rate of copies per minute? I think it is m but not sure, can you help me understand how to figure out this equation. Please help! Thanks

Algebra

Can you please help me factor these expressions? Completely factor the following expressions. Please show work. 4x^2 - 8x - 12 + 6x 144 - 9p^2 5c^2 - 24cd - 5d^2 w^2 - 17w + 42 256z^2 - 4 - 192z^2 + 3 2a^2 c^3 - 14bc^3 + 32c^3 d^2 35g^2 + 6g - 9 3j^3 - 51j^2 + 210j Thank you ...

PLEASE HELP WITH MATH

PLEASE HELP WITH MATH ANY HELP OR ANSWER IS APPRECIATED! 1. If the hands on a round clock moved counter-clockwise, to what number would the minute hand point 20 minutes before the hour hand pointed to the 3?

Math (Ms. Sue! Someone help)

Hi I really need help. I don't know even how to figure these two questions out so if you could help me, please. Is (–4, 10) a solution to the equation 10 – 5x = y? Explain your answer. Describe the pattern in the table using an equation. x|y 1|15 2|25 3|35 4|45 Please help...

chemistry----please help

calculate the molar hydroxide ion concentration of each of the following solutions given the pH 4.53. Answer should be for OH-. Please show me how to do this in step by step I tried putting in 10 xy-4.53= 0.000029512 which is 3.0 * 10^-5 It says that the answer is wrong.

Math

Please explain this to me because im really stumped here!!: The probability of winning a game is 20%. If you play 20 times, how many times should you expect to win? A.4 times B.10 times C.16 times PLEASE HELP!!!!

History Please Help

What type of resource were enslaved people in the plantation economy? A.Capital Resource B.Human Resource C.Natural Resource D.Financial Resource I thinks it's D. Can someone help please.

Physics Please help3

A point charge with charge q1 = 3.10μC is held stationary at the origin. A second point charge with charge q2 = -4.60μC moves from the point ( 0.160m , 0) to the point ( 0.270m , 0.255m ). How much work W is done by the electric force on the moving point charge? ...

Grade 11th Physics

A bus starts from rest and accelerates uniformly for 20 seconds to a speed of 18 km/h. It then moves with a uniform velocity and it is finally brought to rest in 100 meteres with a constant retardation. If the total distance travelled is 0.5km. Find the accelration, ...

projectile physics

im a bit puzzled, please help me gain the sanity required for this confusion... suppose a ball is thrown from the top of a cliff, and i am supposed to get its final velocity; since when the ball reaches it maximum height, the vf which becomes the vi or initial velocity upon ...

Physics help please!!!

The angular speed of digital video discs (DVDs) varies with whether the inner or outer part of the disc is being read. (CDs function in the same way.) Over a 133 min playing time, the angular speed varies from 570 rpm to 1600 rpm. Assuming it to be constant, what is the ...

Physics

When a metal pipe is cut into two pieces, the lowest resonance frequency in one piece is 244Hz and that for the other is 454Hz. What resonant frequency would have been produced by the original length of pipe? (Assume the speed of sound in air is 345 m/s) ^ I already got the ...

Physics

A small block slides along the inside of a hemispherical bowl of radius r = 41.4 cm. When the block is at an angle of θ = 62.3° above the lowest point, it is sliding down with a speed of v = 3.02 m/s and speeding up at a rate of 3.54 m/s2. Find the coefficient of kinetic...

physics help

A ski gondola is connected to the top of a hill by a steel cable of length 680 m and diameter 1.7 cm. As the gondola comes to the end of its run, it bumps into the terminal and sends a wave pulse along the cable. It is observed that it took 15 s for the pulse to return. What ...

physics-momentum HELP PLEASE tesst in two days

A student flings a 2.3g ball of putty at a 225g cart sitting on a slanted air track that is 1.5m long. The track is slanted at an angle of 25 degrees with the horizontal. If the putty is travelling at 4.2 m/s when it hits the cart, will the cart reach the end of the track ...

physics! please help

A long distance swimmer is able to swim through still water at 4km/hr. She wishes to swim from Port Angeles, WA due north to Victoria, B.C., a distance of 50km. An ocean current flows through the Strait of Juan de Fuca from west to east at 3km/hr. In what direction should she ...

physics PLEASE helpp

Suppose 0.0210 kg of steam (at 100.00°C) is added to 0.210 kg of water (initially at 19.5°C.). The water is inside a copper cup of mass 48.9 g. The cup is inside a perfectly insulated calorimetry container that prevents heat flow with the outside environment. Find the final ...

physics

An obj of considerably small spatial extent (volume) slides down at a constant velocity of 2.75 m/s along an inclined board whose inclination with respect to the horizontal is 30 degrees. After reaching the bottom of the board, it travels horizontally along a surface that is ...

Physics

An 80 kg man stands in an elevator. What force does the floor of the elevator exert on the man if a) the elevator is stationary? b) the elevator accelerates upward at 2 m/s2? c) the elevator rises with constant velocity 4 m/s? d) while rising, the elevator decelerates at 1.5 m...

physics- PLEASE HELP

2. A .12 kg ball is moving at 6 m/s when it is hit by a bat, causing it to reverse direction and have a speed of 14 m/s. What is the change in the magnitude of the momentum of the ball? 4. Lonnie pitches a baseball of mass .2 kg. The ball arrives at home plate with a speed of ...

Physics Urgent please help

Consider an ideal spring that has an unstretched length l_0 = 3.5 m. Assume the spring has a constant k = 36 N/m. Suppose the spring is attached to a mass m = 8 kg that lies on a horizontal frictionless surface. The spring-mass system is compressed a distance of x_0 = 1.9 m ...

Physics

Question: A 0.200kg ball moves with a velocity of 0.3m/s. It collides with a second ball that is at rest and has a mass of 0.1kg. After the collision, the velocity of 0.1kg ball is 0.26m/s. What is the new velocity of the first ball. Please indicate which equation you use, ...

Physics HELP

An ultrasound transducer used to measure the speed of blood cells is oriented at an angle of 45 degrees to the direction of the blood flow. if the frequency of the sound emitted by the transducer is 1.5 Mhz and the doppler shift is 268Hz, calculate the speed of blood cells. ...

literary

I am writing my father's obituary - he passed away unexpectedly on Monday. He was from a very small town and always quoted verse that ended with "And when I go (return) home, I am a boy again" Walt Whitman. Dylan Thomas. Please. Please. I have a deadline tomorrow noon.

math

say i played a game against someone. scores: 189 208 255 234 214 176 197 254 203 199 219 216 193 211 me other person who won more games. please show me how to solive it please.

literature-help me PLEASE?

Explore the theme of loneliness and discuss how the writer has conveyed this to the reader through their use of language and style.The poems, Night Waitress by Lynda Hull, The Lady in The Pink Mustang by Louise Erdrich, and Those Winter Sundays by Robert Hayden. please help me...

english

can you please help me correct these sentances so it sounds better. During sunset the sun falls and an evening star progressively emerges. To the poet, this event may symbolize the rising of the dead from earth and entering of the soul to heaven. i want make this entence more ...

Physics: Focal length why is my answer wrong?

An old refracting telescope in a museum is 44.0 cm long and the caption states that the telescope magnifies images by a factor of 29.0. Assuming these numbers are for viewing an object an infinite distance away with minimum eyestrain, what is the focal length of each of the ...

Physics

The Victoria Falls is the tallest waterfall on Earth measuring 108 meters at its highest point. How long will it take for a single drop of water to fall over its edge into the chasm below? Please check answer, if I am doing it incorrectly help me set it up. the last person who...

Physics GR12

A bungee jumper of mass 75kg is stadnding on a platform 53m above a river. The length of the unstretched bungee cord is 11m. The spring costant is 65.6N/m. Calculate the jumper's speed at 19m below the platform on his first fall. [Also, please state which height you usd and ...

Math - Two-Step Inequalities - Please Help

I need help with this one, please. Which of the following is in the solution set of the inequality –3 > –3t + 6? A. -1/3 B. 1/3 C. 4 D. -4 I did a Pre-Test for my lesson, and it says I got this one wrong. However, it doesn't say which one I picked. For this one, is C ...

franctional interests

Hello, I am having a difficult time breaking the following fractions down! what is the common denominator? 98/983 of a 1/2 % 187/983 0f a 1/2% 39/983 of 1/2 % 155/983 of 1/2% 34/983 of 1/2 % 64/983 of 1/2 % 25/983 of 1/2% 65/983 of 1/2% please send me an e-mail, please thank ...

Physics

An 80 kg man stands in an elevator. What force does the floor of the elevator exert on the man if a) the elevator is stationary? b) the elevator accelerates upward at 2 m/s2? c) the elevator rises with constant velocity 4 m/s? d) while rising, the elevator decelerates at 1.5 m...

Physics please help!

FM radio stations use radio waves with frequencies from 88.0 to 108 MHz to broadcast their signals. Assuming that the inductance has a value of 4.60 x 10^-7 H, determine the range of capacitance values that are needed so the antenna can pick up all the radio waves broadcasted ...

physics

What is the kinetic energy of each electron in a beam of electrons if the beam produces a diffraction pattern of a crystal which is similar to that of a beam of 1.00 eV neutrons? Note: The electron mass is 9.11 × 10–31kg; and the neutron mass is 1.67 × 10–27 kg. I know ...

physics

a boat has a mass of 6800 kg. its engine generate a drive force of 4100 N, due west, while the wind exerts a force of 8000 N, due east, and the water exerts a resistive force of 1200 N due east. what is the magnitude and direction of the boats accelerations? (answer 0.309 m/s^...

physics

i keep trying to put this in my calculator but i keep getting the wrong answer...can someone please try it on their calculator and help me? thnks (a) Find the distance r to geosynchronous orbit. Apply Kepler's third law. T^2=((4pi^2)/(GM_E))r^3 Substitute the period in seconds...

physics

The combined mass of a race car and its driver is 600. kilograms. Traveling at a constant speed, the car completes one lap around a circular track of radius 160 meters in 36 seconds. A) Based on the given information, calculate the speed of the car. B) Calculate the magnitude ...

college physics

Now assume that the pitcher throws a 0.145 kg baseball parallel to the ground with a speed of 32 m/s in the +x direction. The batter then hits the ball so it goes directly back to the pitcher along the same straight line. What is the ball's velocity just after leaving the bat ...

PHYSICS HELP PLEASE!

The maximum wavelength of light emitted from a blackbody that will emit electrons from a given piece of metal is 255nm. What is the fraction of total energy emitted from the black body that emits electrons? I set up the integral: Int(8πhcλ^-5)/(e^(hc/λkT)-1)) ...

Physics(Please respond)

A person is riding a bicycle, and its wheels have an angular velocity of 26.0 rad/s. Then, the brakes are applied and the bike is brought to a uniform stop. During braking, the angular displacement of each wheel is 17.6 revolutions. (a) How much time does it take for the bike ...

physics

Help please ! been stuck on this for hours. A model rocket blasts off and moves upward with an acceleration of 13m/s^2 until it reaches a height of 25m , at which point its engine shuts off and it continues its flight in free fall. 1) What is the maximum height attained by the...

physics

Can you please explain how to solve this question? Would I need to use the formula nλ=dsin(theta)? Red light with a wavelength of 660 nm and blue light with a wavelength of 480 nm are beamed at a double slit with a separation of 2x10^-3 mm. The third order maximums for ...

Physics

You take a trip in your car. Starting from rest, you accelerate at 1.00 m/s2 for 10.0 s, heading north. You then stop accelerating and immediately head west at a constant speed for an additional 20.0 s, at which point, you crash into a building coming to an instant stop. At ...

Physics 12

Two boys are pulling a girl along on a tobaggan. Each boy pulls on a rope attached to the same point on the front of the tobaggan with a force of 360 N. Using a scale diagram, determine the resultant of the two forces exerted by the boys if their ropes form each of these ...

Physics

Two boys are pulling a girl along on a tobaggan. Each boy pulls on a rope attached to the same point on the front of the tobaggan with a force of 360 N. Using a scale diagram, determine the resultant of the two forces exerted by the boys if their ropes form each of these ...

Physics

For each of the following functions describing the net force on a particle, determine any and all positions of equilibrium and characterize each as stable or unstable. (a) F = 4x − 2x3, (b) F = x2 + x − 6, (c) F = 5x − 9. Answer: a. x = 0, unstable; x = ±1....

Chem for final, please help!

How many moles of H+(aq) ions are present in 1.25 L of 0.75M Nitric Acid? A. 0.60 mol B. 0.75 mol C. 0.94 mol D. 1.7 mol E. 1.9 mol Please show me how to work this!

PHYSICS

The average kinetic energy of an atom in a monatomic ideal gas is given by KE=3/2kT, where k=1.38*10^-23J/K and T is the Kelvin temperature of the gas. Determine the de Broglie wavelength of a helium atom (mass=6.65*10^-27kg) that has the average kinetic energy at room ...

physics, lenses

I need to calculate the magnification, m of an objective lens, so I can then x it by the eyepiece value for M to get the total magnification. I need v/u (v is dist from lens to image; u is dist of object to lens) I'm using 1/f = 1/v+1/u rearranged for 1/v. That's: 1/v = 1/f - ...

Physics, help me please?!

A car travels around a circular turn of radius 50 meters while maintaining a constant speed of 15m/s find the minimum value for the coefficient of friction necessary to keep the car on the road in icy conditions, the coefficient of friction drops to 0.15, Now find the maximum ...

Physics (Velocity in two dimensions)

Please help: The displacement vector for a 15.0 second interval of a jet airplane's flight is (3850, −2430) m. (a) What is the magnitude of the average velocity? (b) At what angle, measured from the positive x axis, did the airplane fly during this time interval? Express...

Physics (Velocity in two dimensions)

Please help, The displacement vector for a 15.0 second interval of a jet airplane's flight is (3850, −2430) m. (a) What is the magnitude of the average velocity? (b) At what angle, measured from the positive x axis, did the airplane fly during this time interval? Express...

Physics

how are the fundamental laws and principles of physics related to the complexity that we see in nature? 2) How do the laws of physics apply to other sciences such ad biology, chemistry, and earth science? Give a specific example to show the connection - is it because there ...

Physics (please check!!!)

Calculate the magnitudes of the gravitational forces exerted on the Moon by the Sun and by the Earth when the two forces are in direct competition, that is, when the Sun, Moon and Earth are aligned with the Moon between the Sun and the Earth. This alignment corresponds to a ...

Algebra II

Can someone please help me with this problem. Given Matrix Y= 2 -7 4 and -1 1 0 Matrix Z= 3 4 1 4 2 -4 Solve for matrix X. X-2Y=3X+Z HELP PLEASE!!!

Math to hard please help

Add or subtract (4x^2+15x-3)-(3x^2+5) A. 7x^2+15x-8 B. x^2+12x+2 C. x^2+15x-8 D. 7x^2+8 Please help me. Thanks

Please Help CHEM

Can you please tell me if these are right? Determine the pH for the following solutions A [OH-] = 1.0 X 10^-7 M I got 7 B. [H3O+ = 4.2 X 10 ^-3M I got 2.4 C. [H3O+]= 0.0001M I got 4 D. [OH-] = 8.5 X10^-9M I got 5.9 What are the [H3O+] and [OH-] for a solution with the ...

Data Science

I've been accepted into a General Physics degree programme in my country.If I'm willing to start my career as a data scientist,what subjects should I study at the university? Would the knowledge of programming languages will be an extra qualification or is that compulsory? I ...

8th grade

Please help me how you get the answer. PLEASE I NEED HELP. A triangle sail has a perimeter of 25 m. Side a is 2 m shorter than twice side b, and side c is 3 m longer than side b. Find the length of each side. Thank you ver much for helping me

Physics

if it takes 726 watts of power to move a mass 36 meters in 14 seeconds, what is the mass? i really need like, step by step help please? asap. thanks, michelle . physics - bobpursley, Saturday, November 20, 2010 at 4:06pm power= work/time= mass*g*distance/time mass= power*time/...

physics

A small circular object with mass m and radius r has a moment of inertia given by I = cmr2. The object rolls without slipping along the track shown in the figure. The track ends with a ramp of height R = 3.0 m that launches the object vertically. The object starts from a ...

Physics

A small circular object with mass m and radius r has a moment of inertia given by I = cmr2. The object rolls without slipping along the track shown in the figure. The track ends with a ramp of height R = 3.0 m that launches the object vertically. The object starts from a ...

Physics

A water wave is generated in a ripple tank by an oscillator that vibrates 50 times in 30 seconds. A given trough of the wave travels 50.0 cm in 15 seconds. What is the wavelength of the water wave? Produce all your workings. I got 50/30 = 1.67 vibrations per second = frequency...

Physics

2. Saturn has a radius of about 9.0 earth radii, and a mass 95 times the Earth’s mass. Estimate the gravitational field on the surface of Saturn compared to that on the Earth. Show your work. Answer: g= GM/r² G= 6.67 * 10^-11 Nm²/kg² ME= 5.98 * 10^24 kg RE=6.37* 10^7m Ms=...

physics

Doyle goes bowling with a cement brick to improve his score. If the brick has a mass of 1.5kg and an initial speed of 5.0m/s upon release a)how much kinetic energy did it possess upon release i.e. when let it go and b)how far will the brick slide before coming to a halt if the...

Trigonometry Paper Urgent!!!

I am writing a paper on the 8 trigonometric identites but can't find any information on them. Please does anyone know of any websites that would have things like their history, development, applications in ancient times, origins, etc. Please help. Urgent!!!!

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