Tuesday

May 24, 2016
Number of results: 38,225

**Physics - Second Law Question**

A large raindrop falling a cloud is acted on by a gravitational force of 4.9 x 10^-3 N directed downward and a force of air resistance of 4.5 x 10^-3 N directed upward. What is the net force on the raindrop? What is the direction of the net force? Thank you so much!
*October 15, 2014 by Tom*

**Geometry**

ted skated through one of the face off circles at a hockey rink. His path through the circle is shown in the figure. Given that the face off circle is 15 feet in diameter what distance within the face off circle did Ted travel?? If you google this there will be documents so ...
*February 23, 2016 by Anonymous*

**English**

1. The acting of the lead actor was great. 2. The main actor's acting was terrific. 3. The actings of some actors and actresses were fantastic. 4. Two main actors' actings were outstanding. 5. The scenery around the ship was very nice. 6. When the ship was sinking, the actings...
*April 13, 2011 by rfvv*

**physics**

Block A (mass 40 kg) and block B (mass 80 kg) are connected by a string of negligible mass as shown in the figure. The pulley is frictionless and has a negligible mass. If the coefficient of kinetic friction between block A and the incline is μk = 0.27 and the blocks are ...
*November 30, 2012 by Diego*

**physics**

Block A (mass 40 kg) and block B (mass 80 kg) are connected by a string of negligible mass as shown in the figure. The pulley is frictionless and has a negligible mass. If the coefficient of kinetic friction between block A and the incline is μk = 0.27 and the blocks are ...
*November 30, 2012 by Diane*

**physics**

A snapshot graph of a travelling wave is shown. The wave is travelling to the right at 32.0 m/s. a) What is the amplitude if the maximum displacement is 28.0 cm and the total distance travelled by the wave is 26.0 m? b)What is the wavelength of the wave? c)What is the ...
*November 21, 2008 by Anonymous*

**Physics**

A diver stands on the end of a diving board as shown in the figure on the right. The mass of the diver is 58 kg and the mass of the uniform diving board is 35 kg. Calculate the magnitudes and directions of the forces exerted on the board at the points A and B. A and B are 1m ...
*March 24, 2014 by Bobby*

**Earth science**

A sphere was dropped into water in a graduated cylinder as shown in the following diagram.The water level rose th the new level shown .What is the volume of the sphere
*September 28, 2014 by Anonymous*

**Physics**

A 4 kg block resting on a horizontal surface is attached to an 8 kg block that hangs freely by a cord passing over a frictionless pulley. The coefficient of kinetic friction between the block and the horizontal surface is 0.4. Find the acceleration of the blocks and the ...
*November 18, 2006 by Vv*

**math**

Prove that if a subset C of R*R is symmetric with respect to both the x-axis and y-axis, then it is symmetric with respect to the origin.
*December 7, 2008 by julie*

**math**

Prove that if a subset C of R*R is symmetric with respect to both the x-axis and y-axis, then it is symmetric with respect to the origin
*January 11, 2011 by Anonymous*

**Math**

graph the points. Plot C-values on the x-axis and F-values on the y-axis. connect the points with a line
*May 18, 2013 by Sebastian *

**maths**

sketch the graph of each line y= -7x+3 and there is a graph drawn with y axis range from -6:6 x axis range frm -6:6
*February 11, 2014 by krissy*

**Physics/Math**

At time t1 = 2.00 s, the acceleration of a particle in counterclockwise circular motion is (9.00i + 8.00j) m/s^2. It moves at constant speed. At time t2 = 3.00s (3/4 of a revolution later), it's acceleration is (8.00i - 9.00j) m/s^2. Find the radius of the path taken by the ...
*February 18, 2007 by COFFEE*

**physics**

A person pushes a 10 kg box from rest and accelerates it to a speed of 3.2 m/s with a constant force. If the box is pushed for a time of 2.6 s, what is the force exerted by the person? force*time=mass*changeinvelocity solve for force.
*December 16, 2006 by mel*

**Physics - Second Law Question**

the space shuttle engines cause an upward force of 3 x 10 ^5 N to act on the shuttle. gravity pulls down on the shuttle with a force of 1.96 x 10^5 N. what is the net force on the shuttle? what is the direction of the net force?
*October 15, 2014 by Tom*

**physics**

n outer space, far from other objects, block 1 of mass 40 kg is at position (7,9,0) and block 2 of mass 1000 kg is at position (17,13,0) Since the z components of position are zero, the (vector) gravitational force acting on block 2 due to block 1 will be (-21.359e-9,-8.54198e...
*February 5, 2012 by mo*

**Help Please - Science**

I'm stuck on this thing in science. It's a lab report so its kinda hard to explain. We did a topographic map experiment. We had a big rock, and put it in a plastic bin. We then marked centimeters on the bin and filled water to the first centimeter. We drew the water line on an...
*November 13, 2007 by Alex*

**Calculus **

A particle moves along a line so that its posistion at any t is greater than or equal to 0 is given by the function s(t)= t^3-8t+1, where s is measured in feet and t is measured in seconds. a) find the displacement during the first three seconds b) Find the average velocity ...
*October 19, 2010 by Ally *

**physics**

Hi! Thank you for your help~ I am working on a problem about electric fields. There is a rod along the x axis from -3m to 3m with a lambda linear density of 12 x10^-9 c/m. I am supposed to find the electric field on the y axis at y = 0.2m . I know that I have to use both ...
*February 6, 2011 by APpreciative Student*

**PHYSICS**

Hi! Thank you for your help~ I am working on a problem about electric fields. There is a rod along the x axis from -3m to 3m with a lambda linear density of 12 x10^-9 c/m. I am supposed to find the electric field on the y axis at y = 0.2m . If you could tell me what process, ...
*February 6, 2011 by THANK YOU*

**Phy**

In the figure, a block of mass m = 3.09 kg is pulled along a horizontal frictionless floor by a cord that exerts a force of magnitude F = 13.7 N at an angle θ = 23.0°. (a) What is the magnitude of the block's acceleration? (b) The force magnitude F is slowly increased. ...
*September 26, 2015 by Kyle*

**Physics**

A vector has magnitude 58.0 units and is inclined to the positive axis of x at 42.0°. Vector has magnitude 36.0 units and is inclined to the positive axis of x at 121°. Vector has magnitude 40.0 units and is inclined to the positive axis of x at 53.0°. Use the graphical method...
*February 7, 2015 by Alex*

**Physics**

Imagine a very large nonconducting plate that has a uniform surface charge density σ =1 μC/m2; it also shows a point charge Q = -3 μC at distance d = 0.3 m from the plate. Both are fixed in place. We choose the origin of an x-axis at Q. At what positive ...
*September 19, 2012 by Katie*

**MATH**

USING AM IMAGINARY FIGURE OF $19,250.00 AS AN ANNUAL INCOME FIGURE, HOW MUCH MONEY COULD YOU SAVE A YEAR IF YOU BUDGETED HALF OF 2.4%?
*September 7, 2011 by J*

**math**

two figures are similar. the ratio of the corresponding dimensions 3:4. the perimeter of the larger figure is 60 units.what will be the perimiter of the smaller figure
*December 7, 2011 by tdog*

**Physics**

A cylinder having a mass of 3.5 kg can rotate about its central axis through point O. Forces are applied as shown: F1 = 9.0 N, F2 = 6.0 N, F3 = 3.0 N, and F4 = 4.0 N. Also, r = 5.0 cm and R = 12 cm. Find the magnitude and direction of the angular acceleration of the cylinder...
*March 18, 2007 by wolfpak*

**p**

A square ammeter has sides of length l = 3.75 cm. The sides of the ammeter are capable of measuring the magnetic field they are subject to. When the ammeter is clamped around a wire carrying a DC current, as shown in the figure, the average value of the magnetic field measured...
*April 19, 2011 by ok*

**Physics please HELP**

After the velocity selector, a mass spectrometer allows the charged particle to enter a region of magnetic field only, where it follows a curved trajectory and hits a detector which records his position. Your mass spectrometer has the velocity selector set for 2.39 x 10^5 m/s ...
*November 26, 2013 by Ramana*

**Physical Education**

Preliminary design of a compressor drive train Determine the force-time function within the compressor’s cylinder and the torque-time function acting on the input shaft on the compressor during any cycle. Given: Compressor speed is 1500rpm. The compressor has a bore of 3.125 ...
*August 24, 2011 by IceBerg*

**Physics**

A space station consists of two donut-shaped living chambers, A and B, that have the radii shown in the figure. As the station rotates, an astronaut in chamber A is moved 1.50 x 102 m along a circular arc. How far along a circular arc is an astronaut in chamber B moved during ...
*October 15, 2013 by Dreama*

**Algebra**

I'm suppose to write an equation with the following information: Line passes through (2,-6) and is parallel to x=8 I know i must use the slope point form the problem is that since x=8 I don not know which is the slope. Please help me :) The line for x=8 is a straight line ...
*January 25, 2007 by claudia*

**physics**

An enemy ship is on the east side of a mountain island, as shown in the figure. The enemy ship has maneuvered to within d1 = 2153 m of the h = 1690 m high mountain peak and can shoot projectiles with an initial speed of vi = 247 m/s. If the western shoreline is horizontally d2...
*February 16, 2011 by Anonymous*

**physics**

An enemy ship is on the east side of a mountain island, as shown in the figure. The enemy ship has maneuvered to within d1 = 2153 m of the h = 1690 m high mountain peak and can shoot projectiles with an initial speed of vi = 247 m/s. If the western shoreline is horizontally d2...
*February 18, 2011 by Anonymous*

**College Physics**

A ball of mass 620 g hangs from a spring whose stiffness is 195 newtons per meter. A string is attached to the ball and you are pulling the string to the right, so that the ball hangs motionless, as shown in the figure. In this situation the spring is stretched, and its length...
*October 5, 2012 by Anabel*

**Physics**

A small bead of mass m is constrained to move along a frictionless track as shown. The track consists of a semicircular portion of radius R followed by a straight part. At the end of the straight portion there is a horizontal spring of spring constant k attached to a fixed ...
*October 11, 2013 by ashok*

**physics**

Cliff and Will are carrying a uniform 2.0m board of mass 69kg. Will is supporting the board at the end while cliff is 0.6m from the other end as shown in the following figure. Cliff has attached his lunch to his end of the board, and the tension in the string supporting the ...
*February 23, 2012 by brett*

**math**

Given that y varies inversely as x, use the values of x and y from the following to calculate the value of a. x 2 32 y 8 A
*April 7, 2008 by joe*

**math**

I am having trouble with this problem, thanks! If y varies jointly as x and the cube of z, and y=378 when x=4 and z=3, find y when x=9 and z=2 .
*September 30, 2008 by cal*

**Math**

Suppose y varies directly with x and y=12 when x=6. Write an equation realting x and y. Please help, do not understand.
*May 20, 2009 by Gaby*

**pre-calc graphing**

Sketch the graph of f(x)= [ (1/2) tanx + 1 ] as x varies from pie/2 to 3pie/2
*August 2, 2009 by kenny*

**physics**

how can you say that thickness of a material varies as it is a constant value. discuss with in 50 words.
*May 15, 2011 by diwakar*

**math**

find the variation constant in which y varies inversely as x, and the following condition exists, y =12 and x = 1/3
*June 18, 2011 by willa*

**math**

find the variation constant in which y varies inversely as x, and the following condition exists, y =12 and x = 1/3
*June 18, 2011 by willa*

**MAT/117**

The weight of an object varies on different planets. Solve the equation w=Cr^-2 for r
*September 20, 2011 by Anonymous*

**Algebra II**

If y varies jointly as w and x, and y is 483 when x is 742 and w is 383, find y when x is 274 and w is 756.
*November 21, 2011 by Joe*

**Algebra II**

If y varies jointly as w and x, and y is 483 when x is 742 and w is 383, find y when x is 274 and w is 756.
*November 22, 2011 by Ashley*

**Math**

Find the variation constant in which y varies inversely as x, and the following condition exists. Y=30 when x=1/6 K=
*November 25, 2011 by Joe*

**plz help math **

solve variation problem. if y varies directly as x and inversely as m^2 and r^2 and y=5/3 when x=1, m=2 and r=3, find y when x=3, m=1 and r=8
*February 24, 2012 by Anonymous*

**Math**

R varies jointly as S and the square of T. If R is 32.4 when S=0.2 and T=9, find R when S=0.5 and T=5. I believe the answer is R=25, could someone check this for me?
*March 15, 2012 by Allie*

**algebra**

I do not know where to start with this one. Suppose p varies directly as the square of z and inversely as r. If p = 32/5 when z = 4 and r = 10, find p when z = 3 and r = 36.
*June 24, 2012 by Jeff*

**Math**

Finally, the toe of the stick varies in : A. length B. height C. width D. Area
*July 8, 2012 by Amy*

**Math - Algebra**

Write an equation for the given: "f varies inversely as m and f is 32 when m is 0.2." Also, find f is m = 4.
*October 17, 2013 by McKenna Louise*

**Math**

Let S be the set of {(1,1),(1,−1),(−1,1)}-lattice path which begin at (1,1), do not use the same vertex twice, and never touch either the x-axis or the y-axis. Determine the largest value of n such that every path in S which ends at (n,n) has length at most 50000.
*May 14, 2013 by Sambaran G.*

**Geometry**

Let S be the set of {(1,1),(1,−1),(−1,1)} -lattice path which begin at (1,1) , do not use the same vertex twice, and never touch either the x -axis or the y -axis. Determine the largest value of n such that every path in S which ends at (n,n) has length at most ...
*May 16, 2013 by John*

**math**

Let S be the set of {(1,1),(1,−1),(−1,1)}-lattice path which begin at (1,1), do not use the same vertex twice, and never touch either the x-axis or the y-axis. Determine the largest value of n such that every path in S which ends at (n,n) has length at most 50000.
*May 16, 2013 by Pandey ji*

**math**

Let S be the set of {(1,1),(1,−1),(−1,1)}-lattice path which begin at (1,1), do not use the same vertex twice, and never touch either the x-axis or the y-axis. Determine the largest value of n such that every path in S which ends at (n,n) has length at most 50000.
*May 18, 2013 by Gandu man*

**Chemistry please check**

1. A Geiger counter measures radiation indirectly by measuring flashes of light electrons released by ionization speaker static curies answer: electrons released by ionization 2. Reactor control rods are made of a substance that absorbs neutrons reflect neutrons emits neutrons...
*February 16, 2008 by Mary*

**physics**

Unless otherwise stated, all objects are located near the Earth's surface, where = 9.8 . A hockey puck with a weight of 0.80 is sliding freely across a section of very smooth (frictionless) horizontal ice. Part A When it is sliding freely, how does the upward force of the ice ...
*September 29, 2012 by sammy*

**physics HELPP!!!!!!!**

A 6.00 kg mass is connected by a light cord to a 1.00 kg mass on a smooth surface as shown in the figure. The pulley rotates about a frictionless axle and has a moment of inertia of 0.400 k∙m2 and a radius of 0.700 m. Assuming that the cord does not slip on the pulley, ...
*November 14, 2012 by anon*

**College Physics**

A wooden bridge crossing a canyon consists of a plank with length density λ = 2.25 kg/m suspended at h = 10.89 m below a tree branch by two ropes of length L = 2h and with a maximum rated tension of 2000 N, which are attached to the ends of the plank, as shown in the ...
*November 10, 2013 by Kimmy*

**physics**

A 30.0-kg block is resting on a flat horizontal table. On top of this block is resting a 15.0-kg block, to which a horizontal spring is attached, as the drawing illustrates. The spring constant of the spring is 340 N/m. The coefficient of kinetic friction between the lower ...
*November 26, 2013 by Donna*

**science**

A machine has a mechanical advantage of 2. This means its output force is _____. a. 0.5 times greater than the input force b. 2 times smaller than the input force c. 2 times greater than the input force d. 2 times more efficient than the input force
*February 13, 2011 by donna*

**MIT 2.01X**

Posted by MAN on Tuesday, June 18, 2013 at 9:24pm. We will obtain bending moment diagrams for three beams and calculate stresses inside the beams. For each beam, take the x-axis along the neutral axis of the beam, oriented from left to right, with origin at A. HW7_1A_1 : 5.0 ...
*June 23, 2013 by AMK*

**Physics**

In the Bohr model of the hydrogen atom, the speed of the electron is approximately 2.31 × 106 m/s.Find the central force acting on the electron as it revolves in a circular orbit of radius 4.95 × 10−11 m. Answer in units of N. Find the centripetal acceleration of the ...
*February 20, 2011 by CR*

**Math**

4. The CGJ girls plan to string a set of lights diagonally from two vertical poles for overhead lighting for dancing on the right side of the deck (see the diagram). The string of lights is sold in foot increments only. How many feet of diagonal lighting will need to be ...
*January 7, 2016 by Johnathan*

**Physics**

During launches, rockets often discard unneeded parts. A certain rocket starts from rest on the launch pad and accelerates upward at a steady 3.50 m/s^2. When it is 255 m above the launch pad, it discards a used fuel canister by simply disconnecting it. Once it is disconnected...
*July 13, 2011 by Kai*

**PHYSICS**

Two point charges are placed on the x axis as follows: Charge q1= 4.20 is located at x= 0.185 , and charge q2= 4.80 is at x= -0.280 . What are the magnitude and direction of the net force exerted by these two charges on a negative point charge A = -0.625placed at the origin?
*September 19, 2012 by Anonymous*

**physic**

two point charges are located on the y axis as follows : charge q1 = -1.50nc at y= -0.600m, and charge q2 = +3.2nc at the origin (y=0) what is the net force (magnitude and direction) exerted by these two charges on a third charge q3 = +5.00 nc located at y = -0.400 m ?
*February 12, 2013 by yanis*

**physics**

A pulley is attached to the ceiling (as shown in the figure below). Spring scale A is attached to the wall and a rope runs horizontally from it and over the pulley. The same rope is then attached to spring scale B. On the other side of scale B hangs an W = 75-N weight. What ...
*February 17, 2011 by mayrel*

**physics**

A 350 piano slides 3.5 down a 33 incline and is kept from accelerating by a man who is pushing back on it parallel to the incline (see the figure ). The effective coefficient of kinetic friction is 0.30. Calculate the force exerted by the man.
*November 9, 2010 by Anonymous*

**Physics**

A 9.5 kg monkey is hanging by one arm from a branch and is swinging on a vertical circle. As an approximation, assume a radial distance of 90 cm between the branch and the point where the monkey's mass is located. As the monkey swings through the lowest point on the circle, it...
*October 24, 2010 by Ingrid*

**Physics**

A 9.5 kg monkey is hanging by one arm from a branch and is swinging on a vertical circle. As an approximation, assume a radial distance of 90 cm between the branch and the point where the monkey's mass is located. As the monkey swings through the lowest point on the circle, it...
*October 24, 2010 by Adam*

**Physics**

A 9.5 kg monkey is hanging by one arm from a branch and is swinging on a vertical circle. As an approximation, assume a radial distance of 90 cm between the branch and the point where the monkey's mass is located. As the monkey swings through the lowest point on the circle, ...
*October 24, 2010 by Ashley*

**Physics**

A 9.5 kg monkey is hanging by one arm from a branch and is swinging on a vertical circle. As an approximation, assume a radial distance of 90 cm between the branch and the point where the monkey's mass is located. As the monkey swings through the lowest point on the circle, it...
*October 24, 2010 by Ashley*

**Physics **

A 9.5 kg monkey is hanging by one arm from a branch and is swinging on a vertical circle. As an approximation, assume a radial distance of 90 cm between the branch and the point where the monkey's mass is located. As the monkey swings through the lowest point on the circle, ...
*October 24, 2010 by PLEASE HELP*

**physics**

A uranium nucleus 238 U may stay in one piece for billions of years, but sooner or later it decays into an α particle of mass 6.64×10 −27 kg and 234 Th nucleus of mass 3.88 × 10 −25 kg, and the decay process itself is extremely fast (it takes about 10 −...
*January 22, 2011 by Anonymous*

**Physics**

Three forces act on the object.A 3- N force acts due west, and 4-N force acts due south.If the net force on the object is zero ,what is the magnitude of the third force
*September 21, 2011 by rally*

**Physics**

A 63-kg ice-skater glides with a speed of 10 m/s toward a 14-kg sled at rest on the ice. The ice-skater reaches the sled and holds on to it. The ice-skater and the sled then continue sliding in the same direction in which the ice-skater was originally skating. What is the ...
*March 22, 2016 by Emily*

**Physics**

A soccer ball is kicked with an initial speed of 5.1 m/s in a direction 24.5° above the horizontal. Find the magnitude and direction of its velocity at the following times. (Take the +x axis to be parallel to the ground, in the direction that the ball is kicked.) A) 0.25 s ...
*September 23, 2010 by Vin*

**Physics**

A soccer ball is kicked with an initial speed of 5.1 m/s in a direction 24.5° above the horizontal. Find the magnitude and direction of its velocity at the following times. (Take the +x axis to be parallel to the ground, in the direction that the ball is kicked.) A) 0.25 s ...
*September 23, 2010 by Vin*

**Physics**

Assume that you take data on the projectile range for a variety of different launch angles A at a fixed initial velocity Vo. You would like to plot your data to see if the range formula discussed in the introduction is supported by the data. The easiest way to do this is to ...
*February 17, 2014 by Tim*

**Physics **

A large grinding wheel in the shape of a solid cylinder of radius 0.330 m is free to rotate on a frictionless, vertical axle. A constant tangential force of 200 N applied to its edge causes the wheel to have an angular acceleration of 1.048 rad/s2. (a) What is the moment of ...
*October 28, 2014 by Brittany *

**Physics**

A wooden plank with length L = 7.5 m and mass M = 104 kg is centered on a granite cube with side S = 2.0 m. A person of mass m = 64 kg begins walking from the center of the plank outward, as shown in the figure. How far from the center of the plank does the person get before ...
*June 22, 2012 by Annabelle*

**Physics**

In a fairground ride a child of mass 37 kg stands against the inside surface of a circular cylinder of radius 3.9m that rotates around its vertical axis of symmetry. The cylinder has an angular speed of 1.3 rad/s and an angular acceleration of 0.12 rad s^-2. What is the radial...
*August 18, 2012 by Alex*

**physics**

Persons A and B are standing on a board of uniform linear density that is balanced on two supports, as shown in the figure. What is the maximum distance x from the right end of the board at which person A can stand without tipping the board? Treat persons A and B as point ...
*April 10, 2011 by I need help*

**Physics**

A block of mass 2.30 kg is pushed 2.38 m along a frictionless horizontal table by a constant 16.0 N force directed 26.9o below the horizontal. Determine the work done by the applied force. Determine the magnitude of the normal force exerted by the table. Determine the ...
*October 1, 2013 by Chris*

**physics**

A block of mass 2.40 kg is pushed 2.09 m along a frictionless horizontal table by a constant 18.6 N force directed 23.7o below the horizontal. Determine the work done by the applied force. Determine the magnitude of the normal force exerted by the table. Determine the ...
*October 3, 2013 by beccs*

**physics**

An infinite sheet with a negative surface charge density runs parallel to the x axis. Another infinite sheet with an equal but opposite sign surface charge runs parallel to the y axis. The difference in electric potential from the point x = +5.2 m, y = +3.1 m to the point x...
*February 10, 2012 by Mandaleigh*

**Physics**

consider a cart being pulled up an inclined plane by a student during a Physics lab. The applied force on the cart is 18 N is directed parallel to the incline to cause the cart to be displaced parallel to the incline for a given displacement of 0.7 m. The initial energy plus ...
*July 8, 2011 by Allison*

**Physics**

consider a cart being pulled up an inclined plane by a student during a Physics lab. The applied force on the cart is 18 N is directed parallel to the incline to cause the cart to be displaced parallel to the incline for a given displacement of 0.7 m. The initial energy plus ...
*July 8, 2011 by Allison*

**physics, help urgent!**

charge Q = +4.5 ƒÝC is located at the origin and is fixed so that it cannot move. A small object with mass m = 2.0 g and charge q = +8.0 ƒÝC is released from rest at point A on the x-axis at x = 2.0 cm. The small object moves without friction along the x-axis under the ...
*November 14, 2012 by Brette*

**Physics. Please please help!**

A charge Q = +4.5 uC is located at the origin and is fixed so that it cannot move. A small object with mass m = 2.0 g and charge q = +8.0 uC is released from rest at point A on the x-axis at x = 2.0 cm. The small object moves without friction along the x-axis under the ...
*November 14, 2012 by Kyle*

**physics**

The system shown in the Figure is in equilibrium. The mass of block 1 is 2.2 kg and the mass of block 2 is 3.5 kg. String 1 makes an angle = 28o with the vertical and string 2 is exactly horizontal. what is the angle between the string that connects the masses and the string ...
*April 10, 2008 by lizzy*

**physics**

A loudspeaker has a movable diaphragm (cone) that vibrates back and forth in harmonic motion to produce sound. The displacement of the cone playing a sinusoidal test tone is shown above. Find the following values from the graph. (NOTE: t = 0.03 sec, and the vertical axis of ...
*December 31, 2012 by sunny*

**Physics**

A diagram has vector A at 30 degrees above the positive x axis. length = 3 m Vector B is ON the negative x-axis. length = 1 m Vector C is ON the negative y-axis. Length is 2 m What is the direction in degrees of vector a + vector B + vector C?
*January 29, 2012 by Sushmitha*

**Physics**

The x vector component of a displacement vector has a magnitude of 104 m and points along the negative x axis. The y vector component has a magnitude of 185 m and points along the negative y axis. (a) Find the magnitude of . ________m (b) Find the direction of . _________° ...
*September 5, 2011 by Dwight*

**science**

Suppose you place a 30kg weight 50cm from the pivot where should the following forces be applied to lift the load a)a 100N force b)a 150N force 2)how far will the load in question 1 be lifted if: a)the 100N force moves downwards b)the 150N force moveddownwards 1m
*September 16, 2014 by yvonne*

**4th grade math**

how can thinking about 90 tens help you with 1901-297? the last posted answer was no correct...it came home marked WRONG...please help!!??
*October 29, 2010 by charlee*

**chemistry **

Which of the following reactions have a positive ΔSrxn? Check all that apply. A(g) +B(g) -----> 3C(g) A(g)+ B(g)------> C(g) 2A (g) +2B (g)-----> 3C(g) A(s)+B(s)------> C(g) I picked the first one and it marked me wrong. Please help(:
*March 14, 2012 by Jerry*