Thursday

January 29, 2015

January 29, 2015

Number of results: 43,708

**Physics**

A person lifts a 5.2 kg cement block a vertical distance 1.2 m and then carries the block horizontally a distance 7.3 m. Determine the work done by the person and by the force of gravity in this process.
*January 9, 2012 by Mike*

**Khan**

A person lifts a 4.3 kg cement block a vertical distance of 1.3 m and then carries the block horizontally a distance of 5.3 m. The acceleration of gravity is 9.81 m/s 2 . a) Determine the work done by the person in the process. Answer in units of J
*November 15, 2011 by Hajib*

**physics**

A person lifts a 4.4 kg cement block a vertical distance of 1.30 m and then carries the block horizontally a distance of 13.50 m. (a) How much work is done by the person in the process?
*November 9, 2011 by Anonymous*

**physics problem that i neeeed help with!**

A person lifts a 3.8 kg cement block a vertical distance 0.9 m and then carries the block horizontally a distance 7.3 m. Determine the work done by the person and by the force of gravity in this process. ? J (by person) ? J (by force of gravity)
*April 15, 2010 by brittany*

**physics**

A person lifts a 5.5 kg cement block a vertical distance 1.1 m and then carries the block horizontally a distance 7.3 m. Determine the work done by the person and by the force of gravity in this process. J (by person) J (by force of gravity)
*January 3, 2011 by Anonymous*

**Begley**

A person lifts a 4.1 kg cement block a vertical distance of 0.79 m and then carries the block horizontally a distance of 13.30 m. (a) How much work is done by the person in the process? (b) How much work is done by gravity in the process?
*February 29, 2012 by Bryson*

**physics**

A person lifts a 4.6 kg cement block a vertical distance of 1.43 m and then carries the block horizontally a distance of 10.50 m. (a) How much work is done by the person in the process? (b) How much work is done by gravity in the process?
*January 26, 2013 by Jayde Larson*

**physics**

a person lifts a 4.3 kg centimeter block a vertical distance of 1.10m. and then carries the block horizontally a distance of 10.0m. How much work is done by the person? How much work is done by gravity?
*January 14, 2013 by Kalynn*

**physics**

a person lifts a 4.3 kg centimeter block a vertical distance of 1.10m. and then carries the block horizontally a distance of 10.0m. How much work is done by the person? How much work is done by gravity?
*January 14, 2013 by Kalynn*

**physics**

A girl lifts her 20-kg knapsack a vertical distance of 0.70 m and then she carries it 2510 m across the park to the water fountain. The value of the work done by the girl is __________ J.
*July 31, 2014 by HELP ASAP*

**physics**

An electron with a speed of 1.3 × 107 m/s moves horizontally into a region where a constant vertical force of 4.4 × 10-16 N acts on it. The mass of the electron is 9.11 × 10-31 kg. Determine the vertical distance the electron is deflected during the time it has moved 29 mm ...
*October 9, 2010 by koraile*

**physics **

An electron with a speed of 1.1 × 107 m/s moves horizontally into a region where a constant vertical force of 3.6 × 10-16 N acts on it. The mass of the electron is 9.11 × 10-31 kg. Determine the vertical distance the electron is deflected during the time it has moved 47 mm ...
*October 11, 2010 by jessy *

**physics**

An electron with a speed of 1.1 × 107 m/s moves horizontally into a region where a constant vertical force of 3.6 × 10-16 N acts on it. The mass of the electron is 9.11 × 10-31 kg. Determine the vertical distance the electron is deflected during the time it has moved 47 mm ...
*October 11, 2010 by jessy (PLEASE ANSWER ASAP) *

**College Physics**

An electron with a speed of 1.9 × 107 m/s moves horizontally into a region where a constant vertical force of 5.4 × 10-16 N acts on it. The mass of the electron is 9.11 × 10-31 kg. Determine the vertical distance the electron is deflected during the time it has moved 46 mm ...
*March 28, 2012 by Tim *

**physics**

two people push in opposite directions on a block that sits atop a frictionless surface. The soles of their shoes are glued to the surface. if the block originally at rest moves to the right a distance of d. Describe qualitatively how much work is done by the person on the ...
*October 30, 2006 by joseph*

**physics**

An electron with a speed of 1.3 × 107 m/s moves horizontally into a region where a constant vertical force of 4.4 × 10-16 N acts on it. The mass of the electron is 9.11 × 10-31 kg. Determine the vertical distance the electron is deflected during the time it has moved 29 mm ...
*October 9, 2010 by koraile*

**physics**

An electron with a speed of 1.3 × 107 m/s moves horizontally into a region where a constant vertical force of 4.4 × 10-16 N acts on it. The mass of the electron is 9.11 × 10-31 kg. Determine the vertical distance the electron is deflected during the time it has moved 29 mm ...
*October 9, 2010 by daisy*

**physics**

A small block has a horizontal velocity of 4.00 m/s as it slides off the edge of a table. The table is a vertical distance of 0.95 m above the floor. If g = 9.80 m/s2, how far does the block travel horizontally while it is in the air?
*February 24, 2014 by sunny*

**Dynamic**

The block of weight 50 N is pressed against the spring so as to compress it a distance 0.6 m when it is at A. If the plane is smooth, determine the distance d, measured from the wall, to where the block strikes the ground. Neglect the size of the block.
*December 10, 2012 by Anonymous*

**physics**

A 2.7 kg block, starting from rest, slides down a ramp with friction. The top of the ramp is 1.5 m above the ground; the bottom of the ramp is h = 0.25 m above the ground. The block leaves the ramp moving horizontally, and lands a horizontal distance d away. Find the distance ...
*May 31, 2010 by amy*

**Physics**

A person, standing on a vertical cliff a height h above a lake, wants to jump into the lake but notices a rock just at the surface level with its furthest edge a distance s from the bottom of the cliff. The person realizes that with a running start it will be possible to just ...
*September 22, 2013 by ss01*

**Physics**

A 5.0-g bullet traveling horizontally at an unknown speed hits and embeds itself in a 0.195-kg block resting on a frictionless table. The block slides into and compresses a 180-N/m spring a distance of 0.15m before stopping the block and bullet. Determine the initial speed of ...
*March 11, 2014 by BULTURP*

**physics**

A block and tackle with a velocity of 5 is used to raise a mass of 25kg through a vertical distance of 40cm at a steady rate,if the effort is equal to 60N,determine the distance moved by effort, work done by the effort in lifting the load and the loss of energy involved in ...
*January 29, 2015 by happiness*

**Math**

I am confused with this problem could someone please explain? Taxicab Distances Problem. Imagine that the grid lines on a coordinate grid are streets and that the distance between two points must be measured by the number of "blocks" a taxicab would have to travel horizontally...
*September 18, 2009 by B.B.*

**physics**

A large uniform block rests horizontally on two vertical supports(one support at the left end of the block and another at a distance from the other end) and has a weight hanging from its other end. The block has a mass of 100 kg and a length of 2 meters. If the hanging weight ...
*October 16, 2010 by sandhya*

**PHYSICS(HELP)**

A small block of mass m=1 kg glides down (without friction) a circular track of radius R=2 m, starting from rest at height R. At the bottom of the track it hits a massless relaxed spring with spring constant k= 11 N/m, which starts to be compressed as the block continues to ...
*January 12, 2014 by Anonymous*

**physics**

A physics student pulls a block of mass m = 23 kg up an incline at a slow constant velocity for a distance of d = 4 m. The incline makes an angle q = 25° with the horizontal. The coefficient of kinetic friction between the block and the inclined plane is µk = 0.3. a) What is ...
*March 11, 2012 by Mel*

**PHYSICS(help)**

A small block of mass m=1 kg glides down (without friction) a circular track of radius R=2 m, starting from rest at height R. At the bottom of the track it hits a massless relaxed spring with spring constant k= 11 N/m, which starts to be compressed as the block continues to ...
*January 10, 2014 by Anonymous*

**Physics Classical Mechanics Help ASAP**

A small block of mass m=1 kg glides down (without friction) a circular track of radius R=2 m, starting from rest at height R. At the bottom of the track it hits a massless relaxed spring with spring constant k= 8 N/m, which starts to be compressed as the block continues to ...
*January 10, 2014 by Anonymous*

**physics**

A bullet of mass m=10 g is fired with initial speed vi = 400 m/s into a block of mass M=2 kg initially at rest at the edge of a frictionless table of height h=1 m as shown in the figure. The bullet remains in the block, and after the impact the block lands a distance d from ...
*January 14, 2013 by tami*

**Physics**

A small block with a mass of m = 0.120 kg is attached to a cord passing through a hole in a frictionless, horizontal surface. The block is originally revolving at a distance of 0.40 m from the hole with a speed of 0.70 m/s. The cord is pulled from below, shortening the radius ...
*May 20, 2014 by Sonya*

**physics**

A 1.80-kg block slides down a frictionless ramp.The top of the ramp is h1 = 1.21 m above the ground; the bottom of the ramp is h2 = 0.256 m above the ground. The block leaves the ramp moving horizontally, and lands a horizontal distance $d$ away. Calculate the distance d.
*March 5, 2014 by Ted*

**physics**

A 1.9- block slides down a frictionless ramp, as shown in the figure. The top of the ramp is = 2.1 above the ground; the bottom of the ramp is = 0.40 above the ground. The block leaves the ramp moving horizontally, and lands a horizontal distance away. Find the distance .
*July 1, 2010 by meera*

**physics**

A 1.9 kg block slides down a frictionless ramp, as shown in figure 8-28. The top of the ramp is 1.5 m above the ground; the bottom of the ramp is .25 m above the ground. The block leaves the ramp moving horizontally, and lands a horizontal distance d away. Find the distance d.
*October 20, 2010 by tony*

**Physics - Torque**

Consider a rectangular block of mass 30kg, height= 3m, length = 2m. A force F is applied horizontally at the upper edge. The acceleration of gravity is 9.8 m/s^2. 1)What is the minimum force required to start to TIP the block? 2)What is the minimum coefficient of static ...
*April 22, 2007 by Belle*

**physics**

At the end of 1 s, a horizontally fired bullet has dropped a vertical distance of 4.9 m from its otherwise straight-line path in a gravitational field of 1 g. By what distance would a beam of light By what distance would a beam of light traveled in a uniform field of 1 g for 1...
*April 16, 2013 by Anonymous*

**Physics**

A 1.10 kg} block of wood sits at the edge of a table, 0.790 m above the floor. A 1.10×10−2 kg} bullet moving horizontally with a speed of 725 m/s embeds itself within the block. What horizontal distance does the block cover before hitting the ground?
*August 3, 2010 by Todd*

**physics**

A 1.20- block of wood sits at the edge of a table, 0.720 above the floor. A 1.20×10−2- bullet moving horizontally with a speed of 750 embeds itself within the block. What horizontal distance does the block cover before hitting the ground?
*October 26, 2011 by chris*

**physics**

A 20 g bullet moving horizontally with a speed v hits a 2-kg block of wood resting on a table. After hitting the block the bullet is embedded in the block of wood and the block and the bullet moves a distance of 40 cm before it stops. If the coefficient of friction between the...
*July 23, 2012 by Edward*

**Physics**

A block of mass 2.00kg starts at rest at the top of a ramp that is inclined delta= 40.0 degrees with the horizontal. The block slides down the ramp a distance of 3.60 meters where it contacts a relaxed spring with K=300N/m. If the coefficient of kinetic friction between the ...
*October 19, 2011 by Daniel*

**Science**

An elevator lifts a person weighing 625 newtons a distance of 7 meters. If the elevator uses 875 watts of power to lift the person, how long does it take?
*October 4, 2012 by Anonymous*

**Physics**

A person pushes with a horizontal force of 25 N 4kg block, initially at rest on a horizontal table, a distance of 3m. The coefficient of kinetic friction between the block and table is 0.35. determine external work on the block-table system. the energy dissipated by friction ...
*April 16, 2014 by Star *

**physics**

A woman lifts her 100-N child up one meter and carries her for a distance of 50 m to the child’s bedroom. How much work does the woman do?
*November 4, 2012 by jeo*

**Phisics (Urgent)!!!!!!!!!!!!!!!!!!!!!!**

A small block of mass m=1 kg glides down (without friction) a circular track of radius R=2 m, starting from rest at height R. At the bottom of the track it hits a massless relaxed spring with spring constant k= 9 N/m, which starts to be compressed as the block continues to ...
*January 12, 2014 by Anonimus*

**math**

Taxicab Distances Problem. Imagine that the grid lines on a coordinate grid are streets and that the distance between two points must be measured by the number of “blocks” a taxicab would have to travel horizontally and vertically to get from one point to the other. The sum of...
*July 7, 2011 by candy*

**Dynamics**

The 10 kg block shown is released from rest on the horizontal surface at point B, where the spring has been stretched a distance of 0.5 m from its neutral position A. The coefficient of kinetic friction between the block and the plane is 0.30. Calculate (a) the velocity v of ...
*March 24, 2013 by Brandon*

**Physics**

A platform rotates at an angular speed of 2.2 rad/s. A block rests on this platform a distance of 0.3m from the axis. (friction coefficient .5) Without any external torgue acting on the system, the block is moved toward the axis. Ignore the moment of inertia of the platform. ...
*May 5, 2010 by Lola*

**physics**

A rescue helicopter lifts a 85.2-kg person straight up by means of a cable. The person has an upward acceleration of 0.764 m/s2 and is lifted from rest through a distance of 12.5 m. (a) What is the tension in the cable? How much work is done by (b) the tension in the cable and...
*February 28, 2011 by shaknocka*

**physics**

A rescue helicopter lifts a 85.8-kg person straight up by means of a cable. The person has an upward acceleration of 0.643 m/s2 and is lifted from rest through a distance of 13.1 m. (a) What is the tension in the cable? How much work is done by (b) the tension in the cable and...
*November 4, 2013 by Anonymous*

**intro to physics**

In the figure, a block of mass m = 3.20 kg slides from rest a distance d down a frictionless incline at angle θ = 30.0° where it runs into a spring of spring constant 431 N/m. When the block momentarily stops, it has compressed the spring by 19.5 cm. (a) What is the ...
*December 14, 2011 by Anonymous*

**AP Physics**

A light string that is attached to a large block of mass 4m passes over a pulley with negligible rotational inertia and is wrapped around a vertical pole of radius r. The system is released from rest, and as the block descends the string unwinds and the vertical pole with its ...
*February 18, 2008 by Mary*

**physics**

A small block is released from rest at the top of a frictionless incline. The distance from the top of the incline to the bottom, measured along the incline, is 3.60 m. The vertical distance from the top of the incline to the bottom is 1.36 m. If g = 9.80 m/s2, what is the ...
*January 29, 2014 by Tara*

**Math**

7th grade--how do I determine the slope of a set of stairs? Thanks you find it by measuring thr rise over the run i.e. the vertical distance divided by the horizontal distance. thanks
*May 7, 2007 by Ellen*

**Physics 1**

A 50.0-kg block and 100-kg block are connected by a string as in Figure P8.36. The pulley is frictionless and of negligible mass. The coefficient of kinetic friction between the 50-kg block and incline is 0.250. Determine the change in the kinetic energy of the 50-kg block as ...
*October 20, 2011 by Anonymous*

**phy**

A constant force does 12.0 Joules of work pushing a 350 gram block a distance of 2.5 meters up a ramp. The block starts from rest and reaches a speed of 4.75 m/s after being pushed for 2.5 m. The block’s potential energy increases by 5.0 J as it travels this distance. (a) What...
*June 9, 2012 by ihsan*

**Physics **

36.A 50.0-kg block and 100-kg block are connected by a string. The pulley is frictionless and of negligible mass. The coefficient of kinetic friction between the 50-kg block and incline is 0.250. Determine the change in the kinetic energy of the 50-kg block as it moves ...
*April 15, 2013 by Noor*

**physics**

projectile motion with constant horizontal speed ? A stone falls off a cliff with horizontal velocity v m/s. it falls a distance of 5cm vertically and 200m horizontally in t seconds. when it has fallen a vertical distance of 20cm, what is its horizontal distance from the cliff...
*April 16, 2012 by raj*

**Physics**

A platform rotates at an angular speed of 2.2 rad/s. A block rests on the platform a distance of 0.3m from the axis. Static friction coeffient= 0.5. Without any external torque acting on the system, the block is moved towards the axis. Ignore the moment of interia of the ...
*April 28, 2010 by Rita*

**physics**

A block slides a distance d down a frictionless plane and then comes to a stop after sliding a distance s across a rough horizontal plane. What fraction of the distance s does the block slide before its speed is reduced to one-third of the maximum speed it had at the bottom of...
*February 22, 2011 by andrea*

**Physics**

A 40 gram bullet is fired horizontally from a gun with a momentum of 2.8 (kg*m/s) and embeds itself into a 300 gram block of wood initially at rest on a wooden horizontal surface. After this collision the wood block slides 15 meters before falling off a table with a height of ...
*January 16, 2013 by Cass*

**physics**

A 40 gram bullet is fired horizontally from a gun with a momentum of 2.8 (kg*m/s) and embeds itself into a 300 gram block of wood initially at rest on a wooden horizontal surface. After this collision the wood block slides 15 meters before falling off a table with a height of ...
*January 16, 2013 by Cass*

**classical mechanics**

Gliding mass stopped by spring and friction (12 points possible) A small block of mass m=1 kg glides down (without friction) a circular track of radius R=2 m, starting from rest at height R. At the bottom of the track it hits a massless relaxed spring with spring constant k= 7...
*January 10, 2014 by juanpro*

**Physics**

A rescue helicopter lifts a 65 kg person straight up by means of a cable. The person has an upward acceleration of 0.70 m/s2 and is lifted from rest through a distance of 13 m. (a) What is the tension in the cable? N (b) How much work is done by the tension in the cable? J (c...
*October 14, 2008 by Brandon*

**Physics**

A rescue helicopter lifts a 65 kg person straight up by means of a cable. The person has an upward acceleration of 0.70 m/s2 and is lifted from rest through a distance of 13 m. (a) What is the tension in the cable? N (b) How much work is done by the tension in the cable? J (c...
*October 15, 2008 by Brandon*

**Physics**

A rescue helicopter lifts a 65 kg person straight up by means of a cable. The person has an upward acceleration of 0.70 m/s2 and is lifted from rest through a distance of 13 m. (a) What is the tension in the cable? N (b) How much work is done by the tension in the cable? J (c...
*October 29, 2008 by Brandon*

**physics**

1) a bullet of mass 0.02 kg is fired into a block of wood of mass 1.5 kg resting on a horizontal table. The block moves offwith an initial speed of 8 m/s. Estimate the speed with the bullet strikes the block. 2) The bullet in question 1 is fired from a rifle of mass 2.5 kg. ...
*March 15, 2014 by waslat *

**physics**

A person of mass 84.5 kg is initially at rest on the edge of a large stationary platform of mass 150 kg, supported by frictionless wheels on a horizontal surface. The person jumps off the platform, traveling a horizontal distance of 1.00 m while falling a vertical distance of ...
*February 24, 2012 by John*

**physics**

During a workout, a person repeatedly lifts a 13 lb barbell through a distance of 1.5 ft. How many "reps" of this lift are required to burn off 100 Cal?
*November 22, 2008 by lizia*

**science**

a bullet of mass0.01 kg and travelling with a speed of 500m/s strikes a block of mass 2 kg which is suspended by a string of length 5m. The center of gravity of the block is found to raise vertical distance of 0.1m. The speed of bullet after emerging from block is:
*August 4, 2012 by kapindra*

**maths**

The relationship between the vertical height and the horizontal distance of a ball thrown at 45 degree is given by the equation y = x - x^2/50, where y is the vertical height and x is the horizontal distance. (a) Find the maximum vertical height reached. (b) Find the ...
*September 1, 2013 by Shane*

**AP Physics**

A light string that is attached to a large block of mass 4m passes over a pulley with negligible rotational inertia and is wrapped around a vertical pole of radius r. The system is released from rest, and as the block descends the string unwinds and the vertical pole with its ...
*February 18, 2008 by Mary*

**PHYSICS**

A block of mass m = 3.20kg slides from rest a distance d down a frictionless incline at angle θ = 30.0° where it runs into a spring of spring constant 425 N/m. When the block momentarily stops, it has compressed the spring by 22.0 cm. (a) What is the distance d? I found ...
*October 24, 2011 by Anonymous*

**physics**

A block of mass m = 3.20kg slides from rest a distance d down a frictionless incline at angle θ = 30.0° where it runs into a spring of spring constant 425 N/m. When the block momentarily stops, it has compressed the spring by 22.0 cm. (a) What is the distance d? I found ...
*October 24, 2011 by Anonymous*

**Surveying**

I am looking for horizontal distance between 2 points. My slope distance is 153.97' and a vertical distance of 91degrees 32minutes 45seconds.
*September 21, 2013 by Dean*

**Physics**

You observe someone pulling a block of mass 48 kg across a low-friction surface. While they pull a distance of 3.0 m in the direction of motion, the speed of the block changes from 4.9 m/s to 7.7 m/s. Calculate the magnitude of the force exerted by the person on the block. ...
*April 14, 2011 by Amelie*

**PhysicsIn what direction relative to north must ca**

An astronaut on the planet Zircon tosses a rock horizontally with a speed of 6.65 . The rock falls through a vertical distance of 1.50 and lands a horizontal distance of 8.90 from the astronaut. What is the acceleration of gravity on Zircon?
*February 9, 2012 by Alyssa*

**physics--urgent**

A block of mass m = 3.20kg slides from rest a distance d down a frictionless incline at angle θ = 30.0° where it runs into a spring of spring constant 425 N/m. When the block momentarily stops, it has compressed the spring by 22.0 cm. (a) What is the distance d? I found ...
*October 25, 2011 by Anonymous*

**MATH!!!!**

The CN Tower is 553m high. A person in a boat on Lake Ontario, at a point B due south of the tower, observes the top (T) of the tower at an angle of elevation of 8 degrees. At the same time, another person, at a point C on a bearing {S 85 degrees E } from the towerobserves an ...
*September 26, 2006 by Kaitlin*

**DYNAMICS**

The 10-lb has an initial velocity of 10ft/s on the smooth plane. If a force F=(2.5t), where t is in seconds, acts on the block for 3s, determine the final velocity of the block and the distance the block travels during this time.
*March 5, 2013 by HELP*

**DYNAMICS**

The 10-lb has an initial velocity of 10ft/s on the smooth plane. If a force F=(2.5t), where t is in seconds, acts on the block for 3s, determine the final velocity of the block and the distance the block travels during this time.
*March 5, 2013 by HELP*

**Physics**

A block takes 3 times as long to slide down an inclined plane that makes an angle of 30 degrees as it does to fall freely through the same vertical distance. Determine the coefficient of friction? I have no idea where to start on this. :(
*June 8, 2014 by Haff*

**physics**

What is the efficiency of a block and tackle that lifts a 500N resistance a height of 1m when an effort of 80N moves through a distance of 10m? What is the input work? output work?
*March 21, 2012 by Xandra*

**physics**

If a person pushes on a block and it travels a distance of 6.0m before stopping. How far would the block travel if it were pushed with the same force, but on the moon(which has 1/6 of the earth's gravity).
*November 19, 2014 by Alex*

**Physics**

A 0.9-kg block (mass m) and a second block (mass M) are both initially at rest on a frictionless inclined plane. Mass M rests against a spring that has a force constant of 12.2 kN/m. The distance d along the plane between the two blocks is 3.64 m. The 0.9-kg block is released...
*November 9, 2014 by Anonymous*

**physics**

You observe someone pulling a block of mass 48 kg across a low-friction surface. While they pull a distance of 3.0 m in the direction of motion, the speed of the block changes from 4.9 m/s to 7.7 m/s. Calculate the magnitude of the force exerted by the person on the block. ...
*April 14, 2011 by Amelie*

**physics**

A block of mass 2.5 kg is pushed up against the vertical wall by a force of 60 N acting at 47◦ to the ceiling. The coefficient of kinetic friction between the block and the wall is 0.67. The acceleration of gravity is 9.8 m/s2 . Find the work done by this force in moving...
*June 27, 2014 by Kaylee*

**Physics - thermal mechanical**

During a workout, a person repeatedly lifts a 13 lb barbell through a distance of 1.5 ft. How many "reps" of this lift are required to burn off 100 Cal?
*April 29, 2011 by Erica L*

**Physics**

A bullet is fired into a block of wood with speed 250 m/s. The block is attached to a spring that has a spring of 200 N/m. The block embedded bullet compresses the spring a distance of 30.0 cm to the right. Determine the mass of the wooden block
*March 21, 2014 by Dale*

**Physics**

A soccer ball is kicked with a velocity of 12m/s, HORIZONTALLY off a building which is 8.5m high. What is the velocity of the ball after 1.25s? This is what I found so far: Vi = 12m/s Dx = 15.8049336m Dy = 8.5m Time it took for ball to hit floor 1.31707778s I used D=Vi(T) + 1/...
*January 27, 2015 by Pablo*

**MATH**

Imagine that the grid lines on a coordinate grid are streets and that the distance between two points must be measured by the number of “blocks” a taxicab would have to travel horizontally and vertically to get from one point to the other. The sum of the horizontal and ...
*September 15, 2009 by Anonymous*

**General Physics**

A block sliding on a horizontal surface has an initial speed of 0.5 m/s. The block travels a distance of 1 m as it slows to a stop. What distance would the block have traveled if its initial speed had been 1 m/s? 1. 2 m 2. 1 m 3. more information is needed to answer the ...
*July 26, 2013 by Charles*

**science **

a womans lifts a 300 newton child a distance of 1.5 meters and carries her forward for 6.5meters. how much work does the woman do in lifting the child? b.how much work does the child do?
*October 24, 2009 by Barb *

**Science**

1) A block of mass 0.5 kg is placed at the highest point of a fixed smooth sphere of radius 0.5m. The block is gently pushed to one side. Calculate: 0 the 3 o (1) force exerted by the block on the sphere when it makes an angle with the vertical. (ii) At what angle does it ...
*May 10, 2012 by Vikas*

**geometry**

Find the weight to the nearest kg, of the cement block. Cement weighs 1700 kg/m3. 12cm x 10cm and 40cm x 20 cm x 20cm.
*April 20, 2013 by Dee*

**Physics**

A small block slides along a track from one level to a higher level, by moving through an intermediate valley (see Figure). The track is frictionless until the block reaches the higher level. There a frictional force stops the block in a distance d. Assume that the block's ...
*December 26, 2013 by George*

**physics**

An athlete whose mass is 94.0 is performing weight-lifting exercises. Starting from the rest position, he lifts, with constant acceleration, a barbell that weighs 600 . He lifts the barbell a distance of 0.50 in a time of 2.2 . Part A Use Newton's laws to find the total force ...
*November 9, 2012 by Anonymous*

**Physics**

Two long parallel wires separated by a distance, d, carry currents in opposite directions. If the left-hand wire carries a current i/2, and the right-hand wires carries a current i, determine where the magnetic field is zero.
*October 20, 2011 by Jessica*

**college physics**

A block of weight = 35.0 N sits on a frictionless inclined plane, which makes an angle theta = 27.0 with respect to the horizontal. A force of magnitude = 15.9 N, applied parallel to the incline, is just sufficient to pull the block up the plane at constant speed. What is Wg, ...
*February 25, 2010 by Anonymous*

**Physics**

A block of weight = 25.0 N sits on a frictionless inclined plane, which makes an angle = 34.0 with respect to the horizontal, as shown in the figure. A force of magnitude F= 14.0 N, applied parallel to the incline, is just sufficient to pull the block up the plane at constant ...
*October 17, 2010 by Eden*

**physics**

A person puts a suitcase of mass 10.9 kg into a van, moving the suitcase a total distance of 0.90 m: 0.60 m up and 0.30 m horizontally. How much work is done by the person?
*November 19, 2013 by Anonymous*

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