Saturday

August 27, 2016
Number of results: 38,721

**Chemistry**

If the equilibirium reaction is 2 03(g) <--> 3 O2 9(g) is first order with respect to ozone, what type of plot( meaning what is plotted on the y axis vs what is plotted on the x-axis) will yield a straight line? what will the slope of the line represent? PLEASE help im ...
*January 23, 2011 by Amber*

**Physics**

A rock of mass m = 1.8 kg is tied to a string of length L = 2.4 m and is twirled in a vertical circle as shown in the figure below. The speed v of the rock is constant; that is, it is the same at the top and the bottom of the circle. If the tension in the string is zero when ...
*October 26, 2011 by Freud*

**Physics**

Two objects are connected by a massless string, as shown in the figure below. The incline and pulley are frictionless. (a) Find the acceleration of the objects. (Assume that positive acceleration is to the right for m1 and downward for m2. Answer using m1 for m1, m2 for m2, g ...
*July 8, 2015 by Anonymous*

**Math**

if y varies directly as x find the direct variation equation for the situation: y=20 and x=16
*October 19, 2007 by George*

**Algebra 2**

Find an equation of variation where y varies directly as x and inversely as the square of w, and y=24 when x=8 and w=3.
*April 13, 2008 by Amanda*

**Algebra 2**

Find an equation of variation where y varies directly as x and inversely as the square of w, and y=24 when x=8 and w=3.
*April 13, 2008 by Amanda*

**math**

If y varies inversely as x,find the inverse variation equation for the situation y=65 when x=9
*March 15, 2010 by Kari*

**college algebra**

Solve each variation problem. n varies directly as q, and n= 39 when q=3. Find n when q=8.
*April 23, 2010 by BJ*

**math**

Could you help me in solving the following problem? If x varies inversely as the square of y and x=2 when y=1 find x when y=2
*May 4, 2010 by vidya*

**Algebra 2**

Find rarition constant and an equation of variation where y varies directly as x and y =60 when x = 10.
*October 23, 2010 by Anonymous A*

**Algebra 2**

M Varies jointly with A and T and inversley with H. Write and equation that represents the relationship.
*December 14, 2010 by Karl*

**12 grade math**

If Y varies inversely as X^2, determine what Y would be if X = 2 and another point on the equation is (1,8).
*April 18, 2011 by ki*

**College Algebra**

y varies directly as the third power x and inversely as Z. If y=16 when x=4 and z=8,find y when x=9 and z=6
*October 23, 2011 by Ally*

**math**

A varies directly as x and B is inversely proportional to x^2. Given that y= A+B and that y= 19 when x=2 or 3, express y in terms of x.
*February 20, 2012 by YOY*

**Please Help!! Math**

If c varies directly as the square root of d, and c = 14 when d = 64, find c when d = 324.
*June 5, 2013 by Jnr John*

**math**

write the direct variation equation for the following:y varies directly with x and y=60 when x=10
*June 11, 2013 by lina*

**math(algebra)**

If f(x) varies directly with x, and f(x) = 45 when x=9, find the value of f(x) when x=3 answer choices are A. f(x)=8x B. f(x)=4/3x C. f(x)=6x D. f(x)=3/4x
*February 19, 2014 by Ayriana*

**algebra**

Determine whether y varies directly with x if so find the constant of variation k 3y=-7 x-18
*March 4, 2014 by snow*

**algebra 1**

if y varies inversely with x' find the constant of variation and write an equation if y=1/2 and x=-10
*May 26, 2014 by Jennifer*

**Algebra 2**

Write an equation for the relationship z varies jointly with x and the square of y, and inversely with r and s.
*January 11, 2015 by nancy*

**direct variation **

For the statements below, y varies directly with x. Find y when x = −0.3.
*March 22, 2016 by shaka*

**Linear Momentum in Rotational motion**

It is known that for a mass (m) that moves with velocity (v) the linear momentum is (m)x(v). Now, assume we have a rod of mass (m) and radius (R) that rotates with constant angular velocity (w). Also, isolate only half of the cycle (rotation for 180 degrees). What is the ...
*February 11, 2007 by Nikos*

**physics**

In the figure, forces A, B, C and D each have magnitude 50.0 N and act at the same point on the object. What torque (magnitude and direction) does A force exert on the object about point P? What torque (magnitude and direction) B does force exert on the object about point P? ...
*April 12, 2008 by Erin*

**physics**

A new type of spring is found where the spring force F is given by F=-kx + bx^2 where k=400 N/ m and b=100 N/m^2 and x is the expansion (or compression) of the spring from its equilibrium position. The spring is attached to a point mass of 1 kg sitting on a horizontal ...
*April 4, 2011 by Physics*

**Physics/Mechanics**

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 POINTS For the beam above, obtain symbolic ...
*June 18, 2013 by MAN*

**physics**

take a satalite going around the earth... what allows us to say net force (radial) = Fg = Fr = ma were the Fg is the force of gravity exerted on the satalite were Fr is radial force and ma is the mass and acceleration of the satalite ok I understand newtons second law but what...
*August 17, 2009 by physics*

**college physics**

Two cars of equal mass are traveling as shown in the figure below just before undergoing a collision. Before the collision, one of the cars has a speed of 19 m/s along +x, and the other has a speed of 31 m/s along +y. The cars lock bumpers and then slide away together after ...
*February 24, 2011 by lala*

**college physics**

Two cars of equal mass are traveling as shown in the figure below just before undergoing a collision. Before the collision, one of the cars has a speed of 19 m/s along +x, and the other has a speed of 31 m/s along +y. The cars lock bumpers and then slide away together after ...
*February 24, 2011 by lala*

**physics**

A block of mass 39 kg lies on an inclined plane, as shown. The horizontal and vertical supports for the plane have lengths of 36 m and 15 m, respectively, and the coefficient of kinetic friction between the plane and the block is 0.3. The magnitude of the force ~F necessary to...
*October 6, 2010 by christine*

**Physics Urgent please help**

A physical pendulum consists of a body of mass contained in the xy-plane. The moment of inertia of the object about an axis perpendicular to the plane and passing through the object's center of mass is I_cm . The object oscillates in the xy-plane about the point S a distance d...
*November 13, 2013 by Ramana*

**chemistry**

testing bronsted lowry reaction predictions...... im super stuck can someone help me steo by step how to figure this out assuming i use the 5 step process? write a balanced chemical equation for ch3coona and hcl reaction position of equilibrium. I know that ch3coo is a SB and ...
*November 20, 2012 by Tara*

**Physics**

Consider three force vectors ~ F1, ~ F2, and ~ F3. The vector ~ F1 has magnitude F1 = 86 N and direction θ1 = 169◦; the vector ~ F2 has magni- tude F2 = 46 N and direction θ2 = 240◦; and the vector ~ F3 has magnitude F3 = 45 N and direction θ3 = 132...
*September 6, 2009 by Nanhi*

**physics**

Multiple Concept Example 9 provides background pertinent to this problem. The magnitudes of the four displacement vectors shown in the drawing are A = 17.0 m, B = 10.0 m, C = 11.0 m, and D = 23.0 m. Determine the (a) magnitude and (b) direction for the resultant that occurs ...
*January 30, 2016 by Lydia*

**physics**

Figure 5-53 shows a man sitting in a bosun's chair that dangles from a massless rope, which runs over a massless, frictionless pulley and back down to the man's hand. The combined mass of man and chair is 95.4 kg. With what force magnitude must the man pull on the rope if he ...
*June 4, 2011 by Ajay*

**poly**

the volume of the solid generated by revolving infinite region bounded by x-axis, x=k, and y=1/x+2 in the first quadrant about the x-axis to generate a solid. Find the volume of the solid.
*October 31, 2010 by Baohua*

**calculus**

1. Let R be the region in the first quadrant enclosed by the graphs of y=4-X , y=3x , and the y-axis. a. Find the area of region R. b. Find the volume of the solid formed by revolving the region R about the x-axis.
*March 9, 2012 by Taeyeon*

**Math**

1. a triangle has vertices at (0,0), (2,1),(1,3). About which line could the triangle be resolved, in order to form one cone? A) the line at x=2y B) the line at y=3x C) the x-axis D) the y-axis Could someone please explain how to do this? Thank you.
*August 31, 2015 by Tim*

**physics**

The accelerating force of the wind on a small 200-kg sailboat is 707 N north. If the drag of the keel is 500 N acting west, what is the acceleration of the boat? A) 1.5 m/s2 35 degrees north of east B) 2.5 m/s2 55 degrees north of west C) 3.0 m/s2 35 degrees north of east D) 4...
*June 14, 2010 by anonymous*

**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 ...
*March 27, 2012 by Adam*

**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 ...
*March 28, 2012 by Adam*

**Physics**

Galileo’s law of falling bodies states that the rate of fall caused by gravity is the same for all objects, regardless of weight. This means that all objects have a free-falling acceleration of 9.8m/s2. However, a significant contradiction of this theory is the fact that a ...
*June 25, 2015 by Aurora*

**Physics**

A 0.300 kg puck, initially at rest on a frictionless horizontal surface, is struck by a 0.215 kg puck that is initially moving along the x axis with a velocity of 2.14 m/s. After the collision, the 0.215 kg puck has a speed of 1.14 m/s at an angle of q = 53.5 deg to the ...
*September 30, 2012 by Arthur*

**Math: graphing check**

for this x < 3 would I put a dot on 3 (on the y-axis) and it would be a dotted line just through 3 vertical. and which side would be shaded the right side where the x-axis is negatives.
*August 31, 2010 by Amy~*

**math**

The region in the first quadrant bounded by the 𝑦-axis and the curve 𝑥 = 2𝑦2 − 𝑦3 (graph please) is revolved about the 𝑥-axis. Find the volume?
*July 17, 2016 by ANON*

**Physics**

a 25 kg box is released from rest on a rough inclined plane tilted at an angle of 33.5 degrees to the horizontal. The coefficient of kinetic friction between the box and the inclined plane is 0.200. a. determine the force of kinetic friction acting on the box b. determine the ...
*February 25, 2012 by Allie*

**Physics**

A bullet with a mass m = 4:83 g and initial speed of 330 m/s passes through a wheel which is initially at rest as in the The wheel is a solid disk with mass M = 2.29 kg and radius R = 1.:6 cm. The wheel rotates freely about an axis through its center and out of the plane shown...
*December 25, 2011 by Lindsay*

**physics **

A sign that has a mass of 10.0kg is suspended by two wires, as shown below. (wire 1 is at a 40 degreee angle with the sign, wire 2 is at no angle) Determine the force exerted by each wire in supporting the sign. \in cluse a free-body diagram as part of your response.
*October 7, 2011 by ANdrea*

**Physics**

A heavy concrete panel is being lifted into position in a building by means of a crane (see figure below). The tension of 2.52 104 N in the supporting cable produces a torque with respect to point O. (Let L = 41.0 m.) (a) Does this torque tend to rotate the panel clockwise or ...
*July 25, 2012 by Velma*

**Physics**

A 4.29 kg block starts from rest at the top of a 31.8 degrees incline and slides 2.22 m down the incline in 1.22 s. The acceleration of gravity is 9.8 m/s^2. What is the acceleration of the block? Answer in units of m/s^2 What is the coeﬃcient of kinetic friction ...
*November 19, 2012 by Anonymous*

**physics**

a 25.0kg box is released from rest on a rough inclined plane tilted at an angle of 33.5 degrees to the horizontal. the coefficient of kinetic friction between the box and the inclined plane is 0.200. determine the force of kinetic friction acting on the box. determine the ...
*March 16, 2012 by Anonymous*

**Physics**

In the Bohr model of the hydrogen atom, the speed of the electron is approximately 2.41 × 106 m/s. Find the central force acting on the electron as it revolves in a circular orbit of radius 4.92 × 10−11 m. Answer in units of N. i used 9.10938188 × 10-31 as my mas and ...
*June 22, 2011 by JRD*

**Help Physics**

A child with a mass of 39 kg stands on a spring scale inside an elevator. For each of the scenarios below, draw a force diagram of the forces acting on the child and calculate the reading of the scale in newtons. (a) The elevator is at rest. _______ N (b) The elevator is ...
*October 9, 2012 by arcos15*

**Physics**

A 6 µC charge is placed at the origin and a second charge is placed on the x-axis at x = 0.34 m. If the resulting force on the second charge is 4.0 N in the positive x-direction, what is the value of its charge?
*July 14, 2011 by Cynthia*

**physics!!**

The two masses (m1 = 4.96 kg and m2 = 2.90 kg) in the Atwood's machine shown in the figure below are released from rest, with m1 at a height of 0.800 m above the floor. When m1 hits the ground its speed is 0.203 m/s. Assuming that the pulley is a uniform disk with a radius of ...
*October 21, 2012 by Emily *

**Physics**

A car of mass 1396 kg is parked on a very slippery hillside (see figure below). To keep it from sliding down the hill (č = 15°), the owner attaches a cable. If there is no frictional force between the road and the tires, what is the tension in the cable?
*October 19, 2012 by Lily*

**math / science**

find the vector with all of the following properties: magnitude 10 angle of 45 degrees with positive x-axis angle of 75 with positive y-axis positive k component
*December 11, 2011 by Clarissa *

**physics **

A 1.o kg cart A and 2.0 kg cart B are at rest on a frictionless table. A cord and a spring of negligible mass join the two carts. The spring is compressed 0.060m between the two carts until the spring's potential energy is 12 Joules. When the cord is cut, the spring will force...
*January 9, 2011 by unknown *

**Physics**

The ultracentrifuge is an important tool for separating and analyzing proteins in biological research. Because of the enormous centripetal accelerations that can be achieved, the apparatus must be carefully balanced so that each sample is matched by another on the opposite ...
*March 24, 2013 by Leanna*

**Physics**

In the manufacture of a cam, a uniform solid cylinder of radius R is first machined. Then an off-center hole of radius R/2 is drilled, parallel to the axis of the cylinder, and centered at a point a distance R/2 from the center of the cylinder. Then cam, of mass M, is then ...
*May 16, 2007 by Lancelot*

**Physics(Please help)**

1) A force vector has a magnitude of 579 newtons and points at an angle 43o of below the positive x axis. Find the x scalar component and the y scalar component of the vector? For the x component I did 579cos(43) = 423.45 N. Is this correct? For the y component I did 579sin(43...
*May 25, 2012 by Hannah*

**Physics**

A uniform magnetic field points north; its magnitude is 3.5 T. A proton with kinetic energy 6.0 × 10-13 J is moving vertically downward in this field. What is the magnetic force acting on it? This is what I've done. The answer is incorrect. Please help me find out why. 3.5T to...
*September 22, 2010 by Sar*

**Algebra**

43. For every real number x, y, and z, the statement (x-y)z = xz - yz is ________ true a. always b. sometimes c. never No idea.. 45. True or False: All equations give only one number as an output for every input number. False? 46. In which quadrant or on which axis would you ...
*May 13, 2010 by mysterychicken*

**physics**

First off, thanks a lot for your help. Secondly, will you do it again? A bicyclist traveling with speed v = 3.2m/s on a flat toad is making a turn with radius r = 2.8 m. The forces acting on the cyclist and cycle are the normal force (N) and friction force (Ffr) exerted by the...
*April 13, 2008 by dear drwls*

**physics**

Hi i'm doing that lab were you attach a weight to a tape which is also through a timer that puts marks on the tape at a given time interval ok I'm asked why is gravity different than on Earth? I don't rember the physics answer behind it I remeber Fg = G((m1 m1)/r^2) to find ...
*August 13, 2009 by physics*

**physics**

a wheel revolves about a fixed horizontal axis through O (the center). During a certain interval of time, the angular velocity (which initially is 20 rad per second clockwise) changes uniformly at such a rate that the angular displacement is 60 rad counterclockwise, and the ...
*January 31, 2011 by stan*

**physic **

A roller-coaster car has a mass of 500 kg when fully loaded with passengers. The car passes over a hill of radius 15 m, as shown. At the top of the hill, the car has a speed of 8 m/s. What is the force of the track on the car at the top of the hill?
*April 18, 2010 by yusra*

**physics**

A uranium nucleus 238U may stay in one piece for billions of years, but sooner or later it decays into an a particle of mass 6.64×10−27 kg and 234Th nucleus of mass 3.88 × 10−25 kg, and the decay process itself is extremely fast(it takes about 10−20 s). ...
*January 16, 2010 by Anonymous*

**physics**

A uranium nucleus 238U may stay in one piece for billions of years, but sooner or later it de- cays into an particle of mass 6.64×10−27 kg and 234Th nucleus of mass 3.88 × 10−25 kg, and the decay process itself is extremely fast (it takes about 10−20 s). ...
*April 29, 2012 by kate*

**Physics**

A trash can with a mass of 5 kg has a coefficient of static friction of μs = 0.80 and a coefficient of kinetic friction of μk = 0.22. (The Active Figure applies to a similar situation, but the values of the mass, coefficient of static friction and coefficient of ...
*February 8, 2014 by Ray*

**physics**

A toy car is given a quick push so that it moves on an inclined ramp. After it is released, it moves up, reaches its highest point and moves back down again. Friction is so small it can be ignored. What net force acts on the car? A. net force of zero B. Net constant force up ...
*July 2, 2011 by alexa*

**Math Analysis**

Tell if the function is symmetric with respect to the x-axis, y-axis, and origin. 3. 8x^2 - 2y^2 = 12 ==> I got that it was symmetric to both the x- and y-axes. Is this right? 4. 5x^2 - 3y^2 = 18 ==> I can't get anywhere with this equation -- I'm getting the answer that ...
*October 19, 2009 by Emily*

**physics for scientists and engeneers I**

Suppose the roller coaster in the figure (h1 = 40 m, h2 = 14 m, h3 = 30) passes point A with a speed of 2.60 m/s. If the average force of friction is equal to one fifth of its weight, with what speed will it reach point B? The distance traveled is 35.0 m.
*February 16, 2011 by Johnathon*

**Physics**

A spring oriented vertically is attached to a hard horizontal surface as in the figure below. The spring has a force constant of 1.64 kN/m. How much is the spring compressed when a object of mass m = 2.35 kg is placed on top of the spring and the system is at rest?
*April 26, 2013 by Abdul*

**Mechanics**

What force accelerates a 3kg mass at a rate of 4m/s^2? Assuming this is on smooth surface with no frictional force Force = mass x acceleration F = 3 x 4 F = 12N If there is a frictional force will have to look at the acceleration in the opposing direction first. thanks again
*February 4, 2007 by Janine*

**Physic**

Ok so this question was posted before but I'm confused by the answer. The problem is: The two masses (m1 = 5.0 kg and m2 = 3.0 kg) in the Atwood's machine shown in Figure 10-23 are released from rest, with m1 at a height of 0.87 m above the floor. When m1 hits the ground its ...
*March 8, 2010 by Kelsey*

**Physics**

Sally applies a horizontal force of 500 N with a rope to dtag a wooden crate across a floor with a constant speed. The rope tied to the crate is pulled at an angle of 67.5 degrees. a) How much force is exerted by the rope on the crate? b) What work is done by Sally if the ...
*November 14, 2007 by Elizabeth*

**Physics**

An apparatus of the figure below is designed to study insects at an acceleration of magnitude 940 m/s2 (= 96g). The apparatus consists of a 2.0-m rod with insect containers at either end. The rod rotates about an axis perpendicular to the rod and at its center. (a) How fast ...
*March 2, 2010 by Max*

**physics**

A ball of mass 540 g hangs from a spring whose stiffness is 155 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...
*February 29, 2012 by Alina*

**Physics**

A block of mass m1 = 2.4 kg initially moving to the right with a speed of 3.3 m/s on a frictionless, horizontal track collides with a spring attached to a second block of mass m2 = 4.1 kg initially moving to the left with a speed of 1.5 m/s as shown in figure (a). The spring ...
*October 14, 2013 by Leticia*

**Physics**

A block of mass m1 = 2.4 kg initially moving to the right with a speed of 3.3 m/s on a frictionless, horizontal track collides with a spring attached to a second block of mass m2 = 4.1 kg initially moving to the left with a speed of 1.5 m/s as shown in figure (a). The spring ...
*October 14, 2013 by Leticia*

**Trigonometry**

A communications tower is located at the top of a steep hill, as shown. The angle of inclination of the hill is 58°. A guy wire is to be attached to the top of the tower and to the ground, 50 m downhill from the base of the tower. The angle α in the figure is determined ...
*October 1, 2014 by Liz*

**Physics**

A stationary particle of charge q = 1.4 10-8 C is placed in a laser beam (an electromagnetic wave) whose intensity is 3.5 103 W/m2. Determine the magnitudes of the (a) electric and (b) magnetic forces exerted on the charge. If the charge is moving at a speed of 3.7 104 m/s ...
*March 26, 2013 by Elizabeth*

**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*

**Physics - please check over**

A charged particle moves at a constant velocity in a straight line through a region in space... a) is the electric field zero in the region? Explain b) is the magnetic field zero i the region? Explain I think a is yes because a charged particle will always create an electric ...
*April 28, 2009 by Lana*

**Critical Thinking**

I am not sure how to tell in the opposing views resource center database whether or not a source is marked as an editorial or column. Please help!
*December 18, 2009 by Fawn*

**Algebra 1**

2. The line y = 4x - 7 crosses the y axis at: a.(4, 0) b.(0, 4) c.(-7, 0) d.(0, -7) Set y=0 and solve for x You can automaticallly elimintae b. and d. because y has to be 0 when the line crosses the y-axis. Something seems to be wrong with your other choices too, recheck them...
*October 23, 2006 by Rachel*

**Physics**

A thin rod of length L and mass M rotates about a vertical axis through its center with angular velocity w. The rod makes an angle B with the rotation axis. Determine the angular momentum of the rod.
*April 18, 2008 by Nik*

**calculus**

A rectangle is inscribed in an isosceles triangle. If the sides of the triangle are 10, 10 and 12, what are the dimensions of the rectangle having the greatest area? The diagram shows the triangle on a set of axes with base 12 on the x axis and the top vertices on the y axis.
*December 11, 2011 by Tina*

**Math -urgent :)**

Hello A straight line passes through the point (1,27) and intersects the positive x-axis at the point A and the positive y-axis at the point B.Find the shortest possible distance between A and B.. Pleaase could you help me? Thank you in advance
*December 9, 2012 by Anonymous*

**Physics**

A charge q1 = 5 ěC is at the origin. A second charge q2 = -3 ěC is on the x-axis, 0.8 m from the origin. The electric field at a point on the y-axis, 0.5 m from the origin is: I don't understand the question please help . Thanks for reading
*January 18, 2013 by ugh*

**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*

**physics**

Four objects are held in position at the corners of a rectangle by light rods . m1 2.90(kg) m2 1.90(kg) m3 4.50(kg) m41.90 (kg) (a) Find the moment of inertia of the system about the x-axis. Answer in kg · m2 (b) Find the moment of inertia of the system about the y-axis. ...
*October 26, 2011 by Allie*

**Physics**

For a question in physics... I was told to draw a graph of vertical displacement, y, versus time, t, in 2sec increments from 0 to 1.8. What was given to me was: v_yo_= +10m/s v_xo_= +5m/s a_y_ = -10m/s^2 So I used the formula: y=vo+1/2at^2 I drew the graph, and got a parabala...
*October 1, 2007 by Jenny*

**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*

**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*

**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*