Thursday

November 27, 2014

November 27, 2014

Number of results: 37,029

**Physics**

The maximum current in an AC circuit is 3.0 Amperes. What is the rms value of the current in the AC circuit? 0.5 A 2.1 A 3.0 A 4.2 A I would think D...
*October 22, 2012 by I'm on anon*

**calculus**

a function has a local maximum at x=-2 and x=6 and a local minimum at x=1. how do u find the concavity of this function and point of inflection??
*November 11, 2012 by Navroz*

**Calculus**

Find a cubic function f(x) = ax^3 + bx^2 + cx + d that has a local maximum value of 3 at x = −2 and a local minimum value of 0 at x = 1.
*November 12, 2012 by Benjamin*

**Calculus**

Find the absolute maximum and the absolute minimum values of f(x)=x−7cos(x) on the interval [−š,š).
*July 7, 2013 by Robin*

**calculus**

Find the absolute maximum and absolute minimum values of f on the given interval. f(t) = (36 − t^2)^ 1/t, [−1, 6]
*November 3, 2013 by Anonymous*

**Science**

2 forces of 5N&7N respectively act on an object. (a) When will the resultant of 2 vectors be at a maximum? (b) When will the resultant of the 2 vectors be at a minimum?
*January 19, 2014 by Lesed*

**Calculus Help!**

Find the absolute maximum and absolute minimum values of f on the given interval. f(x) = xe^(−x^(2)/98), [−6, 14]
*April 1, 2014 by Katir *

**maths**

What is the maximum number of cubes with a side of length 1/3 that can fit inside a cube with a side of length 1 ? 1.3 2.9 3.18 4.27
*August 11, 2014 by peter*

**math**

when you throw up a cricket ball foot ball tennis ball and a basket ball which will go to a maximum height
*September 13, 2014 by Anonymous*

**college physics**

an atwood machine is constructed by mounting a well-lubricated pulley (not necessarily a ring/disc), whose radius is 6.00cm on an axle and passing a rope over the pulley. Each end of the rope is attached to a different mass of 3.0 kg and 2.0kg so they both hang vertically. ...
*June 25, 2013 by kim*

**physics**

A block of mass M is sliding down an inclined plane and is accelerating. Which of the following statements are true? Choices: True, False. A. The frictional force must be less than the component of Mg down the plane B. The normal force of the plane is greater than the weight ...
*December 10, 2008 by Sandhya*

**physics**

A block is at rest on the incline shown in the figure. The coefficients of static and kinetic friction are μs = 0.7 and μk = 0.59, respec- tively. The acceleration of gravity is 9.8 m/s2 What is the frictional force acting on the 29 kg mass? Answer in units of N (...
*November 10, 2013 by james*

**physics**

A block is at rest on the incline shown in the figure. The coefficients of static and ki- netic friction are μs = 0.45 and μk = 0.38, respectively. The acceleration of gravity is 9.8 m/s2 . What is the frictional force acting on the 25 kg mass? Answer in units of N ...
*October 1, 2013 by Anonymous*

**physics**

a truck of mass 8500Kg is pulling a trailer of mass 27 000Kg on a level road.The coefficient of kinetic friction is 0,20.A horizontal force of 75 000N moves the truck forward.question:calculate the magnitude of the acceleration of the system
*March 3, 2014 by Bheki*

**High School Physics**

Paleontologists estimate that if a Tyrannosaurus rex were to trip and fall, it would have experienced a force of approximately 260,000 acting on its torso when it hit the ground. Assuming the torso has a mass of 3800 kg, find the magnitude of the torso's upward acceleration as...
*September 23, 2009 by Mia*

**physics**

An elevator of mass M rises a distance H in time T and acquires potential energy PE. If it rises the same distance in half the time the increase in potential energy will be?
*June 29, 2010 by Anonymous*

**Science**

Humidity is the amount of water vapor in the air at a given time. At warm temperatures, air can hold more moisture than it can at cold temperatures. Relative humidity is the amount of vapor the air is holding expressed as a percentage of the amount the air is capable of ...
*July 18, 2008 by Jimmy*

**precalc**

the graph of a cubic function has a local min at (5,-3) and a point of symmetry at (0,4). At what point does a local maximum occur? i don't quite know how to figure this one out, any help?
*February 11, 2008 by Kate*

**Chemistry *Urgent***

The maximum number of electrons that can occupy ONE f orbital is: A. 14 B. 6 C. 2 D. 18 E. 10 Wrong Points Earned: 0/2 Your Response: A Seriously can't an f orbital hold 14 electrons?
*November 18, 2008 by Trevor*

**Differential Calculus**

A ball thrown up has a height f(t)=250t-25t^2 after t seconds. (1) find the maximum height (2) find the velocity when it hits the ground.
*August 10, 2009 by matrix school 2*

**calc**

Let f be the function defined by f(x) = (x 2 + 1)e -x for -4 < x < 4. a. For what value of x does f reach its absolute maximum? Justify your answer. b. Find the x-coordinates of all points of inflection of f. Justify your answer.
*February 23, 2010 by john*

**physics**

consider a simple harmonic oscillation with m=0.5kg, k=10N/m and amplitude A=3cm.WHat is the total energy of the oscillation,what is the maximum speed,what is the kinetic energy?
*September 17, 2010 by kabelo*

**PHYSICS**

An athlete on a trampoline leaps straight up into the air with an initial speed of 9.3 m/s. Find the following: (b) the speed of the athlete when she is halfway up to her maximum height
*October 27, 2010 by Petrik*

**math**

A dog is tied to a leash that is hooked to the outside corner of a barn that measures 12 ft.x20 ft. The length of the leash is 16 ft. What is the maximum area in which the dog can wander?
*January 11, 2011 by Kortney*

**Science**

A ball is thrown vertically into the air and takes 5s to return to the thrower, from time of projection. What is the time it takes to reach maximum height ?
*January 31, 2011 by Christopher*

**Physics**

A grasshopper jumps 1.0 m from rest, with an initial velocity at a 47 angle with respect to the horizontal. Find the speed of the grasshopper? Find the maximum height reached?
*February 24, 2011 by Lady22*

**physics**

A 2.9 kg object oscillates with simple harmonic motion on a spring of force constant 430.0 N/m. The maximum speed is 0.8 m/s. What is the total energy of the object and the spring?
*October 12, 2011 by Jay*

**Physics**

A charge of 6.0 mC is to be split into two parts that are then separated by 3.00 mm. What is the maximum possible magnitude of the electrostatic force between those two parts?
*February 2, 2012 by Aliyah*

**physics**

A golfer drives a ball with a velocity of 42 m/s at an angle of 45 degrees above the horizontal. What is the maximum height (in meters) of the ball above the level fairway?
*February 14, 2012 by j*

**Physics**

A spring and block is set up on frictionless tabletop. The 30N/m spring is compressed 16 centimeters and released. What is the maximum speed the 2.0 kilogram block will reach?
*March 11, 2012 by Tracy*

**Physics**

A spring and block is set up on frictionless tabletop. The 30N/m spring is compressed 16 centimeters and released. What is the maximum speed the 2.0 kilogram block will reach?
*March 12, 2012 by Tracy*

**math**

The total hang time T in seconds, is given by T(h)=^h/2. Where h is the maximum height. If a person jumps 6 ft off the ground, determine for how many seconds the person is in the air.
*April 19, 2012 by angel*

**calculus**

Suppose f'(x) = xe^-x^2. a) On what interval is f increasing? On what interval is f decreasing? b) Does f have a maximum value? Minimum value? So should I assume that f'(x) > 0 since e has to be a positive number?
*September 22, 2012 by Travis*

**physics**

Bob can throw a 540 g rock with a speed of 26 m/s. He moves his hand forward 0.8 m while doing so. What is Bob's maximum power output as he throws the rock?
*November 25, 2012 by meg*

**physics**

Bob can throw a 540 g rock with a speed of 26 m/s. He moves his hand forward 0.8 m while doing so. What is Bob's maximum power output as he throws the rock?
*November 25, 2012 by meg*

**Physics**

A wave described by y(x,t)=Asin(kx-wt) moves down a string. What is the maximum transverse speed an atom of the string can have? What is the displacement of this atom at this time?
*January 18, 2013 by Sean*

**calculus-max & min**

an open box with a square base is to be constructed from 48 square inches of material. What dimensions will produce a box with maximum volume?
*January 31, 2013 by Pat*

**chemistry**

the maximum volume if Ziploc sandwich is 0.5 L at the pressure of 1 atm. use the gas law, calculate the pressure in the bag from the above volume of co2.
*March 10, 2013 by mariah*

**math**

Two non-negative numbers are chosen such that their sum is 30. Find the numbers if the sum of their squares is to be a maximum. Explanation to solve this would help !
*April 10, 2013 by David*

**Trigonometry**

What is the maximum integer value of x, where x<200, that satisfies the following inequalities: sin(90+180x/100)<0 and tan(180−180x/100)<0 ?
*May 23, 2013 by Tony *

**Discrete Mathematics**

Use Bubble Sort to sort the list: 7, 12, 5, 22, 13, 32 What is the maximum number of comparisons required for a list of 6 numbers? How many vcomparisons did I actually need?
*July 26, 2013 by Joy*

**physics**

The position of a particle moving along the x axis is given by x=3.0t^2 - 1.0t^3 , where x is in meters and t in seconds. What is the position of the particle when it achieves its maximum speed in the positive x direction
*November 14, 2013 by olivia*

**math**

Suppose p(x) is a twice-differentiable function such that p(1) = 3, p'(1) = 0, and p”(1) = -2. Which of the following is true? there is a relative maximum at p(1) = 3 there is a relative minimum at p(1) = 3 there is a point of inflection at p(1) = 3 none of these are true
*March 11, 2014 by lilly*

**Physics**

A 0.2kg ball is attached to a rope and is whirled in a horizontal circle. Calculate the maximum speed of the ball if the length of the rope is 0.8m and its breaking strength is 0.9N
*June 14, 2014 by alice*

**physics**

A stone is projected up with a vertical velocity u, reaches upto a maximum height h. When it is at a height of 3h/4 from the ground, the ratio of KE and PE at that point is: (consider PE=0 at the point of projection) a]1:1 b]1:2 c]1:3 d]3:1
*June 27, 2014 by fatimah*

**ap calc**

find the maximum value of f(x)= 3cos(x)-2sin(x) I know you have to take the derivative but after the derivative I don't know how to solve it. f'(x)=-3sin(x)-2cos(x)=0 I don't know what to do after this please help.
*November 9, 2014 by Anonymous*

**ap calc**

find the maximum value of f(x)= 3cos(x)-2sin(x) I know you have to take the derivative but after the derivative I don't know how to solve it. f'(x)=-3sin(x)-2cos(x)=0 I don't know what to do after this please help
*November 9, 2014 by Anonymous*

**computers**

how do I tell the main difference between simm and dimm in electronic and physical? Also I don't know the question of "explain an upgrade to a Compaq R4000 computer to the maximum amount of memory. It currently contains two 512M modules."
*November 13, 2006 by Andrew*

**analytic geometry helps are appreciated**

Find the maximum value of y/x over all real numbers x and y that satisfy (x-3)^2+(y-3)^2 = 6. It is a circle, but how do we even begin? As a matter of fact, how is there not only like 1 solution?? No one has answered this question yet.
*March 1, 2013 by Knights*

**Physics with Calculus**

The system shown in the figure is in static equilibrium. The rod of length L and mass M is held in an unpright position. The top of the rod is tied to a fixed vertical surface by a string, and a force F is applied at the midpoint of the rod. The coefficient of static friction ...
*November 8, 2014 by Rico*

**physics**

If the earth acceleration due to gravity on a mass of 2000kg on the earth surface is 10ms.What will be the acceleration due to gravity when it is at a point twice the radius of the earth.What is the gravitational force on it.
*August 12, 2011 by Boniface*

**Physics**

A box of mass 1kg is placed on a table and is connected to a hanging mass m by a string strung over a pulley. If the coefficient of kinetic friction between the box and the table is .3 and the box slides at a constant speed of .5m/s what is the weight of the hanging mass? ...
*November 14, 2007 by Andrea*

**Physics**

Mass 1 (10 kg) rests on a table connected by a string to Mass 2 (5 kg). If s = 0.30 and k = 0.20, what is a) the acceleration of each block? (Draw the figure and proceed). b) the tension in the connecting string?
*October 5, 2010 by Anonymous*

**PHysics**

A chain consisting of five links, each of mass 0.150 kg, is lifted vertically with a constant acceleration of a = 2.2 m/s2. Find the magnitude of the force that link 3 exerts on link 2. What is the magnitude of the force F that must be exerted on the top link to achieve this ...
*February 21, 2012 by Steve*

**physics**

please check these: a laser can be used a. to treat glaucoma b. to measure distance c. to read bar codes d. all of the above D in a laser, all of the following forms of energy can be converted into coherent light except a. chemical energy b. electrical energy c. light d. ...
*March 11, 2009 by physics*

**Physics**

Two 125 N forces pull on a 50 kg mass. One of the forces pulls to the right and the other pulls 90 degrees from the first force. What is the net acceleration of the mass?
*September 12, 2012 by Matt*

**physics**

An airplane with a mass of 1.2 x 10^4 kg tows a glider with a mass of .60 x 10^4 kg. If the airplane propellers provide a net forward thrust of 3.6 x10^4 N, what is the acceleration of the glider?
*May 18, 2012 by Anonymous*

**Physics**

A Honda Civic and Lincoln Town Car are initially at rest on a horizontal parking lot at the edge of steep cliff. The Town Car has twice as much mass as the Civic. Equal constant forces are applied to each car and they accelerate across equal distances (ignore effects of ...
*December 3, 2009 by Hannah*

**Physics**

An unknown mass has an acceleration of 2 m/s2 to a 1 kg body.if the same force accelerate another body of 8 m/s2 .what is the mass of the body?
*June 14, 2014 by Espie*

**physics**

A block of mass m = 1.02 kg is suspended above the ground at a height h = 14.4 m by a spool with two arms. The spool-with- arms arrangement is a combination of a solid uniform cylinder of mass M = 3.43 kg and radius R = 0.440 m, and two rods, each of length l = 0.559 m and ...
*November 4, 2014 by Lauren*

**physics**

a.) A 125 kg stone has an acceleration of 84.9 m/s2. Determine the net force acting on the stone. b.) A 45 N force is acting on a 757 kg slab. Determine the acceleration of the slab. c.) A 63.2 N force acts on a block and causes an acceleration of 85.1 m/s2. Determine the mass...
*February 13, 2012 by lauren*

**physics- please help**

World-class sprinters can accelerate out of the starting blocks with an acceleration that is nearly horizontal and has magnitude 15m/s^2 . Part a)How much horizontal force F must a sprinter of mass 60kg exert on the starting blocks to produce this acceleration? express your ...
*April 29, 2012 by Emma*

**Circle geometry!**

A circular tunnel, 20 m in diameter is blasted through a mountain. A 16 m wide road isto be constructed along the floor of the tunnel. What is the maximum height of the tunnel to the nearest meter?
*April 11, 2010 by Anonymous*

**calculus**

2. Consider the function f defined by f(x)=(e^X)cosx with domain[0,2pie] . a. Find the absolute maximum and minimum values of f(x) b. Find the intervals on which f is increasing. c. Find the x-coordinate of each point of inflection of the graph of f.
*January 2, 2012 by Yoona*

**calculus**

2. Consider the function f defined by f(x)=(e^X)cosx with domain[0,2pie] . a. Find the absolute maximum and minimum values of f(x) b. Find the intervals on which f is increasing. c. Find the x-coordinate of each point of inflection of the graph of f.
*January 2, 2012 by Yoona*

**Physics**

Visible light is incident perpendicularly on a diffraction grating of 200 rulings/mm. What are the (a) longest, (b) second longest, and (c) third longest wavelengths that can be associated with an intensity maximum at theta=30 degrees?
*November 25, 2012 by Brian*

**Physics**

A circular loop with 30 turns and area of 0.25 m2 rotates at 100 rad/s. The axis of rotation of the loop is perpendicular to the direction of the magnetic field of 0.04 Tesla. What is the maximum emf induced in the loop?
*February 2, 2013 by fred*

**Math**

Corinda has 400 feet of square fencing to make a play area. She wants the fenced area to be rectangular.What dimensions should she use in order to enclose the maximum possible area?
*February 4, 2013 by Anonymous*

**grade 10 math**

im stuck in this question,i tried everything but i failed... can u please help me. find two numbers whose sum is 32 and whose product is a maximum. please help me!!!
*November 24, 2009 by Sameul*

**physical science **

a 250-kg rock falls off a cliff and comes to rest on the ground, which is 40 m below the cliff . At what point is the rock's potential energy at maximum?
*November 15, 2010 by sharmeka*

**Engineering Science**

A ball is thrown vertically into the air and takes 5s to return to the thrower, from time of projection. What is the time it takes to reach maximum height ?
*January 31, 2011 by Christopher*

**physics**

A 10 amp fuse is connected in series to 4 identical 5 ohm resistors in parallel with each other. What is the maximum size battery that could be connected without blowing the fuse?
*February 24, 2011 by Crystal*

**Statistics**

The distribution of time to respond to an e-mail is uniform with a minimum value of 0 and a maximum value of 10 days. What is the probability of getting a response in less than four days?
*March 5, 2011 by Nicole*

**math**

an isosceles triangle has a vertex at the origin. Determine the area of the largest such triangle that is bound by the function x squared + 6y = 48 and explain why this is infact the maximum area.
*March 13, 2011 by Tomas*

**maths**

a) Construct a right square pyramid with your choice of dimensions (maximum base of 5 by 5 units). base dimensions: Slant height: Calculate its surface area
*April 5, 2011 by simrat*

**Math**

Construct a stem and leaf plot with the following data landmarks there should be at least 12 data entries in your plot median: 57 minimum: 42 maximum: 78 mode: 60
*April 26, 2011 by Bell*

**physics**

A golf ball is drive. With an initial velocity of 25 m/s at an angle of 35 degrees with the horizontal find the maximum height the ball reaches above its original height
*November 9, 2011 by Anthony*

**cal3 please help not too hard of a problem**

Consider the function f(x,y)=xy+xz+yz+4 at the point P=(2,-1,1) Find the unit vector in direction of maximum increase of f in the direction of p. I know the magnitude of p=sqrt6 how do i find this???
*February 28, 2012 by Lucy*

**physics**

A 0.23 kg ball of dough is thrown straight up into the air with an initial velocity of 12 m/s.Find the momentum of the ball of dough halfway to its maximum height on the way up.
*March 15, 2012 by Chris*

**physics**

A soccer ball leaves the foot of a player with an intitial velocity of 22 m/s at an angle of 30 degrees above the positive x-axis. What is the velocity of the ball at its maximum height?
*September 7, 2012 by mark*

**College Alegbra**

An arrow is launched upward with a velocity of 54 feet per second from the top of a 75 foot building. What is the maximum height attained by the arrow in feet?
*October 20, 2012 by Randi*

**calculus**

a function has a local maximum at x=-2 and x=6 and a local minimum at x=1. how do u find the concavity of this function and point of inflection?? ***the only given info is the max and min points
*November 11, 2012 by Navroz*

**Math**

Make up a data set of at least 12 numbers that have the following landmarks Maximum 18 Mode 7 Range 13 Median 12 Make a bar graph of the data
*October 10, 2013 by Kate*

**chemistry**

The directions state "weigh about 5 grams of sodium chloride". Give minimum and maximum amounts of sodium chloride that would satisfy these instructions.
*February 11, 2014 by Rachel*

**statistics**

according to statistics, the maximum heart rate should be 220 minus a person's age. how would you interpret your highest rate in relation to that given?
*June 24, 2014 by jovelyn*

**science**

A 24 V battery of internal resistance 4 ohm is connected to a variable resistor. At what value of the current drawn from the battery is the rate of heat produced in the resistor is maximum?
*September 3, 2014 by Himanshu Kumar*

**PHYYYYYSICS 2**

A golfer hits a golf ball, giving it an initial speed of 39.7 m/s at an angle of 55° above the horizontal. What is the maximum height in meters that the golf ball will achieve?
*September 18, 2014 by Carissa*

**Pre-Calc/Trig...**

A ball is thrown upward with an initial velocity of 4ft/sec from a height of ten feet. what is the maximum height that the ball will reach. h(t)= -16+vt+s
*October 15, 2014 by Anonymous*

**PHYSICS need help now!!!**

You have a summer job at your university’s zoology department, where you’ll be working with an animal behavior expert. She’s assigned you to study videos of different animals leaping into the air. Your task is to compare their power outputs as they jump. You’ll have the mass (...
*October 18, 2012 by Jcota2*

**Algebra 2**

What is the maximum product of two numbers whose sum is 22? What numbers yield this product?
*January 18, 2012 by Peter*

**Physics**

The maximum current in an AC circuit is 3.0 Amperes. What is the rms value of the current in the AC circuit? 0.5 A 2.1 A 3.0 A 4.2 A My answer is 2.1A.
*October 19, 2012 by La La*

**math help urgent **

From the graph find the maximum δ>0 which is such that if 0<|x-4|<δ , then |x-2|<0.8 The graph is of f(x)=√x
*October 21, 2012 by someguy*

**Math**

Find the absolute maximum value and the absolute minimum value, if any, of the following function. f(x)=1/x^2+2x+8 on [-2,1]
*November 9, 2012 by Shannon*

**math**

Find the absolute maximum value and the absolute minimum value, if any, of the following function. f(x)=1/x^2+2x+8 on [-2,1]
*November 9, 2012 by Cindy*

**physics**

How to calculate the maximum vertical component of the force in rope BC when the force in rope is 400N
*April 8, 2014 by smesihle*

**calculus 1**

find the cubic function,f(x)=ax^3+bx^2+cx^d , has local maximum value of 3, at x=-2 and local minimum value of 0, at x=1.
*May 1, 2014 by sumee*

**PYSICS**

The upward normal force exerted by the floor is 600 N on an elevator passenger who weighs 610 N. What is the reaction force to the upward normal force exerted by the floor? What is the reaction force to weight of the passenger? What is the magnitude of the acceleration?
*October 19, 2011 by Ruth*

**Physics**

A juggler performs in a room with a ceiling 2m abouve hand level. A. what is the maximum upward speed she can give the ball without hitting the celing. B. what is the time spent in the air before the ball is caught?
*October 22, 2009 by Anonymous*

**Physics**

Hey can someone help me out? I only have 1 attempt left on this question and do not understand it at all!!! A 3.5 kg balloon is filled with helium ( density = 0.179 kg/m^3). If the balloon is a sphere with a radius of 5.2m , what is the maximum weight it can lift?
*December 3, 2009 by Tommy*

**physics**

A rocket is fired straight up through the atmosphere from the South Pole, burning out at an altitude of 208 km when traveling at 5.8 km/s. (a) What maximum distance from Earth's surface does it travel before falling back to Earth?
*March 26, 2010 by nate*

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