Wednesday

July 23, 2014

July 23, 2014

Number of results: 24,287

**Physics**

A 2 kg brick falls at 5.1 m/s from a height of 6 m above a spring that has a spring constant of 47 N/m. The brick strikes and compresses the spring until it stops moving. Ignore friction effects. How much is the spring compressed by the brick? Assume that there is no Eg after ...
*March 14, 2014 by Anonymous*

**Physics**

A 2 kg brick falls at 5.1 m/s from a height of 6 m above a spring that has a spring constant of 47 N/m. The brick strikes and compresses the spring until it stops moving. Ignore friction effects. How much is the spring compressed by the brick? Assume that there is no Eg after ...
*March 14, 2014 by Anonymous1*

**urgent (physics)**

A 2 kg brick falls at 5.1 m/s from a height of 6 m above a spring that has a spring constant of 47 N/m. The brick strikes and compresses the spring until it stops moving. Ignore friction effects. How much is the spring compressed by the brick? Assume that there is no Eg after ...
*March 14, 2014 by help*

**Physics**

A 6 kg brick is falling at a rate of 48.9 m/s toward the earth at a current height of 14 m. What is the total mechanical energy of the brick? (total mechanical energy= Eg+Ek+Eel) What is the answer in Joules?
*March 3, 2014 by Anonymous *

**Physics**

A 6 kg brick is falling at a rate of 48.9 m/s toward the earth at a current height of 14 m. What is the total mechanical energy of the brick? (total mechanical energy= Eg+Ek+Eel) What is the answer in Joules?
*March 3, 2014 by Help me please*

**physics**

A 3.3 kg brick is falling at a rate of 35.1 m/s toward the earth at a current height of 14 m. What is the total mechanical energy of the brick?
*February 21, 2011 by Anonymous*

**Mathematics**

If a brick weighs exactly as much as a 9-pound rock plus falf of another brick, what does a brick and a half weigh?
*October 9, 2011 by Mary*

**Mathematics**

If a brick weighs exactly as much as a 9-pound rock plus falf of another brick, what does a brick and a half weigh?
*October 9, 2011 by Mathew*

**Engineering science**

A brick with a mass of 6kg is dropped vertically from a certain height.it takes 4,5 seconds for the brick to reach the ground.determine the ff.the height from which the brick is dropped and potential energy of the brick
*March 8, 2014 by Peter*

**calculus**

A brick becomes dislodged from the top of a state building (at a height of 1290 feet) and falls to the sidewalk below. (a) Write the position, velocity, and acceleration functions of the brick. s(t) = v(t) = a(t) = (b) How long does it take the brick to hit the sidewalk? (c) ...
*March 6, 2013 by Brandi*

**physics**

a brick is dropped (0 initial speed) from the top of a building. the brick strikes the ground in 2.5 seconds. you may ignore air resistant so the brick is in free fall. A)how tall in meters is the building? B) what is the magnitude of the brick's velocity just before it ...
*July 18, 2010 by josh*

**Physics**

Find the heat that flows in 1 s through a lead brick 18 cm long if the temperature difference between the ends of the brick is 6.8° C. The cross-sectional area of the brick is 14 cm2.
*December 4, 2011 by Anonymous*

**Physics**

A brick is thrown vertically upward with an initial speed of 4.40 m/s from the roof of a building. If the building is 74.0 m tall, how much time passes before the brick lands on the ground?
*February 2, 2010 by Alysse*

**Physics**

A brick is thrown vertically upward with an initial speed of 4.40 m/s from the roof of a building. If the building is 74.0 m tall, how much time passes before the brick lands on the ground?
*February 12, 2010 by Max*

**physics**

A brick is thrown vertically upward with an initial speed of 5.00 m/s from the roof of a building. If the building is 112.0 m tall, how much time passes before the brick lands on the ground?
*February 7, 2010 by dale*

**Physics**

A brick is thrown vertically upward with an initial speed of 4.40 m/s from the roof of a building. If the building is 74.0 m tall, how much time passes before the brick lands on the ground? I don't get how to solve it still
*February 2, 2010 by Alysse*

**math**

a brick is placed on a balance scale.it balances exactly with a 3/4 pound weight and 3/4 of a brick .what is the weight of the brick? show and explain work
*November 11, 2013 by eric*

**physics**

a construction worker accidentally knocks a brick from a building so that it falls in 4s to the ground.calculate a) the velocity of the brick as it hits the ground b)the distance fallen of the brick
*March 23, 2012 by shiva*

**Math**

A whole brick is balanced with 3/4 pound and 3/4 brick. What is the weight of the whole brick ? Use a visual solution process
*October 29, 2012 by Dell*

**chemistry**

When hydrazine (N2H4) is burned in a 259-g brick container, the temperature of the brick increases by 5.13 C. Calculate the quantity of heat released in this reaction. The specific heat of the brick is .840 J/(g C)
*October 20, 2011 by n*

**Physics**

a man is 1.8m tall and is standing at the bottom of a 54m tall building, he looks up and sees a brick that has fallen 39m towards him. how much time does he have to get out of the way before the brick hits him?.
*October 4, 2012 by GS*

**Physics**

Hi maybe someone can help me out, since my teacher isn't available today and this is due tonight :D. Find the heat that flows in 1.0 s through a lead brick 17 cm long if the temperature difference between the ends of the brick is 9.5 C. The cross-sectional area of the brick is...
*December 10, 2009 by Phil*

**Physics! **

A 0.3 kg brick is dropped form a height of 8 meters. It hits the ground and comes to rest. a) Calculate the impulse exerted by ground on the brick. b) It takes 0.0013 seconds from the time the brick first touches the ground until it touches the ground. Calculate the average ...
*January 15, 2013 by Carol*

**Physics**

A brick is thrown vertically upward with an initial speed of 3.00 m/s from the roof of a building. If the building is 78.4 m tall, how much time passes before the brick lands on the ground? I think I may have gotten part of this question by first calculating how long it takes ...
*February 13, 2011 by Julia*

**Physics**

My problem is as follows "A 3 kg brick is dropped from a height of 1.0 m onto a nail which is vertically stuck in a plank of wood. If the nail doesn't move in much, how much heat is produced in the system when the brick hits and sticks onto the top of the nail." I know PE is ...
*April 16, 2009 by Brigid*

**Physics**

If a 40 kg brick and a 400 kg brick each dropped from 1 m above a trampoline, find the lowest position of each brick. Assume the trampoline is a simple spring obeying Hooke's law with a k value of 12 000 N/m. I know i must use Fs= kx, but where do I start? Do i find Fg at 1 m?
*November 6, 2009 by Rachel*

**math**

A whole brick is balanced with ¾ pound and ¾ brick. What is the weight of the whole brick?
*October 12, 2011 by unknown*

**math**

A whole brick is balanced with 3/4 pound and 3/4 brick. what is the weight of the whole brick?
*October 26, 2012 by dell*

**Physics**

A 9 kg lead brick falls from a height of 1.8 m. a) Find the momentum as it reaches the ground. b) What impulse is needed to bring the brick to rest? c) The brick falls onto a carpet 2.0 cm thick. Assuming the force stopping it is constant, find the average force the carpet ...
*November 7, 2007 by Jayd*

**Physics**

If a 40 kg brick and a 400 kg brick each dropped from 1 m above a trampoline, find the lowest position of each brick. Assume the trampoline is a simple spring obeying Hooke's law with a k value of 12 000 N/m. So, I used mg(h+x)=1/2 k x^2 then solved for x in each case. ** Bob...
*November 6, 2009 by Rachel*

**physics**

A 30g bullet with a speed of 400m=s strikes a glancing blow to a target brick of mass 1:0kg. The Brick breaks into two fragments. The bullet deflects at a angle of 30 above the +x-axis and has a reduced speed of 100m=s. One piece of the brick with mass (0.75kg) goes off to ...
*September 27, 2010 by kimber*

**physics**

A 30g bullet with a speed of 400m=s strikes a glancing blow to a target brick of mass 1:0kg. The Brick breaks into two fragments. The bullet deflects at a angle of 30 above the +x-axis and has a reduced speed of 100m=s. One piece of the brick with mass (0.75kg) goes off to ...
*September 27, 2010 by kimber*

**marketing**

I need a little guidance answering this folowing multiple choice question please: ______ is the term used to describe a company that does NOT offer its services on the internet? a. offline business b. brick-and-mortar c. click-and-mortar d. e-business e. web community I am ...
*April 17, 2008 by Maggie*

**Math**

A 5-inch section of a hollow brick measures 12 inches tall and 8 inches wide on the outside. The brick is 1 inch thick. Find the volume of the brick, not the hollow interior.
*May 22, 2013 by Anonymous*

**math**

A 5-inch section of a hollow brick measures 12 inches tall and 8 inches wide on the outside. The brick is 1 inch thick. Find the volume of the brick, not the hollow interior.
*May 22, 2013 by Anonymous*

**physics**

The brick shown in drawing the is glued to the floor. A 3500-N force is applied to the top surface of the brick as shown. If the brick has a shear modulus of 5.4 109 N/m2, how far to the right does the top face move relative to the stationary bottom face?
*November 13, 2011 by jeremy*

**physics ( please help me)**

A brick with a mass of 0.400kg is pressed against a vertical spring with force constant k=500 N(m^-1) such that the spring is compressed 0.200m. When the brick is released, how high does it rise from this position? (the brick and the spring are not attached. The spring has ...
*February 23, 2012 by taylor*

**physics**

A lead brick with volume of 7*10^-4m^3 is floating in bath of liquid mercury. What fraction of the lead brick’s volume is above the surface of mercury? A student uses a stick to push the lead brick below the mercury surface so that it is completely submerged. What force is ...
*December 12, 2011 by sand*

**physics**

A lead brick with volume of 7*10^-4m^3 is floating in bath of liquid mercury. a) What fraction of the lead brick’s volume is above the surface of mercury? A student uses a stick to push the lead brick below the mercury surface so that it is completely submerged. What force is ...
*December 26, 2011 by sand*

**science**

Two bricks having a 22N force applied on them and each brick having a friction of 1N ,the first brick with the mass of 2kg and the second one having a mass of 3kg.calculate the acceleration that the first brick expiriences
*February 29, 2012 by Bongani*

**Physical Science**

A force of 20 Newtons gives a brick an acceleration of 5 m/s^2. What is the mass of the brick?
*January 31, 2012 by Maci*

**Physical Science**

A force of 20 Newtons gives a brick an acceleration of 5 m/s^2. What is the mass of the brick?
*February 1, 2012 by Jess*

**physics**

7. A 2000.0 kg boulder sits on the top of a 50.0 m cliff. As the boulder rolls off, it loses 3.0% of its mechanical energy as heat. How much heat energy goes the boulder lose? How much mechanical energy does the boulder have right before hits the ground?
*December 6, 2009 by henry*

**Physics**

Suppose a brick has a mass of 4.50 kg. What is the brick's weight at the surface of the Earth
*September 16, 2012 by Anonymous*

**physics**

3. A 2.0-kg brick has the dimensions 7.5 cm „e 15 cm „e 30.0 cm. What is the pressure (in SI units) the brick exerts when standing on its largest face?
*March 7, 2011 by Anonymous*

**physics**

3. A 2.0-kg brick has the dimensions 7.5 cm „e 15 cm „e 30.0 cm. What is the pressure (in SI units) the brick exerts when standing on its largest face?
*March 7, 2011 by Anonymous*

**Science**

How could an architect estimate the weight of a brick wall if each brick weighs three pounds?
*May 1, 2013 by Grayson*

**Physics**

Please check my answers: Why does a brick weigh 1 kilogram. Explain. -Is it because the matter in the brick is the gravitational pull between the brick and the earth? When one water drop falls from a facet, and then a few minutes later another drop. How will the drop come out...
*September 9, 2007 by Soly*

**Physics**

A brick is dropped from a high scaffold. (a) What is its velocity after 4.5 s? m/s (b) How far does the brick fall during this time?
*January 14, 2013 by Billy*

**math**

A brick wall measuring 3 ft by 11 ft is to be built. The brick measures 4in by 6 in. How many bricks will it take to complete the walkway?
*June 24, 2013 by iris*

**physics/math**

a brick has mass of 1.2 kg. a force of 5.4 N is needed to move the brick along the floor with a constant velocity. what is the coefficiant of friction?
*October 20, 2008 by kiley*

**uh manoa**

A basket of neglible wieght hangs from a vertical spring scale of constant force 1500N/m. If you sundally put a 3.0 Kg adobe brick in the basket, find the maximum distance that the spring will stretch. If, instead, you released the brick from 1.0 m above the basket, by how ...
*June 8, 2011 by luis*

**Physics**

Pretend the hot brick extracts heat from the cold brick and becomes hotter. Would this violate the Law of Conservation of Energy?
*December 9, 2012 by Katie*

**Physics**

If a 40 kg brick and a 400 kg brick each dropped from 1 m above a trampoline, find the lowest position of each brick. Assume the trampoline is a simple spring obeying Hooke's law with a k value of 12 000 N/m. So, I used mg(h+x)=1/2 k x^2 then solved for x in each case. and got...
*November 6, 2009 by for "bobpursley"*

**physics work and energy**

A basket of neglible wieght hangs from a vertical spring scale of constant force 1500N/m. If you sundally put a 3.0 Kg adobe brick in the basket, find the maximum distance that the spring will stretch. If, instead, you released the brick from 1.0 m above the basket, by how ...
*June 8, 2011 by Anonymous*

**Science**

A rectangular brick measures 6cm by 9cm by 20cm and has a mass of 2.563 kilograms. What is the density of the brick in grams per cubic centimeter?
*October 27, 2013 by Ericka*

**calculus**

A landscape architect wishes to enclose a rectangular garden on one side by a brick wall costing $30/ft and on the other three sides by a metal fence costing $20/ft. If the area of the garden is 2,000 ft2, find the dimensions of the garden that minimize the cost. ?= (ft of ...
*October 26, 2010 by Anonymous*

**AP physics**

A brick is thrown upward from the top of a building at an angle of 25.1 ◦ above the horizontal and with an initial speed of 19.4 m/s. The acceleration of gravity is 9.8 m/s 2 . If the brick is in ﬂight for 3.5 s, how tall is
*September 30, 2012 by mustta*

**math**

On one side of a balance scale is a whole brick. On the other side is one-half of a brick and 4 pounds of potatoes. If the scale balances. how many pounds does a whole brick weigh?
*January 5, 2014 by nisrin*

**Science**

A 7-kg brick is dragged across the floor by a horizontal force of 42 N. If a frictional force of 18 N also acts on the brick, what is its acceleration?
*May 3, 2011 by Anna*

**physics**

A brick is thrown upward from the top of a building at an angle of 10° to the horizontal and with an initial speed of 11 m/s. If the brick is in flight for 2.8 s, how tall is the building?
*February 9, 2010 by mel*

**physics**

A brick is thrown upward from the top of a building at an angle of 25° to the horizontal and with an initial speed of 17 m/s. If the brick is in flight for 2.5 s, how tall is the building?
*September 20, 2010 by tiffany*

**physics**

A brick is thrown upward from the top of a building at an angle of 40° to the horizontal and with an initial speed of 12 m/s. If the brick is in flight for 2.5 s, how tall is the building?
*September 25, 2010 by Anonymous*

**physics**

A brick is thrown upward from the top of a building at an angle of 15° to the horizontal and with an initial speed of 16 m/s. If the brick is in flight for 2.8 s, how tall is the building?
*September 27, 2010 by Claudia*

**Physics**

A brick is thrown upward from the top of a building at an angle of 35° to the horizontal and with an initial speed of 12 m/s. If the brick is in flight for 3.5 s, how tall is the building?
*September 11, 2011 by Court*

**physics**

A brick is thrown upward from the top of a building at an angle of 40° to the horizontal and with an initial speed of 16 m/s. If the brick is in flight for 3.4 s, how tall is the building?
*January 29, 2012 by kaf*

**physics**

A brick is thrown upward from the top of a building at an angle of 25° to the horizontal and with an initial speed of 16 m/s. If the brick is in flight for 3.1 s, how tall is the building?
*February 21, 2012 by sid*

**Physics**

A brick is thrown upward from the top of a building at an angle of 25° to the horizontal and with an initial speed of 17 m/s. If the brick is in flight for 3.3 s, how tall is the building? m
*September 12, 2012 by Crown*

**home inspection**

16. Brick ties in brick veneer walls allow for A. water drainage. B. air circulation. *C. expansion. D. inspection.
*February 24, 2013 by Austin*

**Physics**

A brick is thrown upward from the top of a building at an angle of 30° to the horizontal and with an initial speed of 11 m/s. If the brick is in flight for 3.2 s, how tall is the building? ___m
*September 21, 2010 by jc*

**physics**

the mass of a brick is 2.5 kg. its dimensions are 10cmx5cmx2cm. find the pressure of the brick exerts on the ground if it is resting on a. 10cmx5cm base and b. 5cmx2cm base
*August 20, 2013 by jim*

**PHYSICS**

Suppose you are in a spaceship in freefall between Earth and the moon. How could you distinguish between a lead brick and an ordinary brick if you were blindfolded and wore gloves?
*October 16, 2009 by Lor*

**algebra**

A brick border that is x feet wide is built around a rectangular patio. The patio is 6 feet wide and 8 feet long. The combined area of the patio and the brick border is 120 square feet. What is the width of the brick border?
*October 7, 2010 by Emily*

**Physics**

A brick is thrown upward from the top of a building at an angle of 27.6 above the horizontal and with an initial speed of 13.9 m/s. The acceleration of gravity is 9.8 m/s. If the brick is in ﬂight for 3 s, how tall is the building?
*November 4, 2012 by ferras*

**projectiles**

a small brick mass 700 g is projected vertically downwards at a velocity of 1,25(m/s) from the top of a building of height 25m.calculate the magnitude of the velocity at which the brick hits the ground?
*February 15, 2014 by Anonymous*

**Physics**

My answer was 19.8 cm but it was incorrect. A basket of negligible weight hangs from a vertical spring scale of force constant 1500 N/m. If you suddenly put a 3.00 kg adobe brick in the basket, find the maximum distance that the spring will stretch. Answer: 3.92 cm If, instead...
*October 9, 2010 by .*

**physical sciences**

a small brick mass 700 g is projected vertically downwards at a velocity of 1,25(m/s) from the top of a building of height 25m.calculate the magnitude of the velocity at which the brick hits the ground?
*February 15, 2014 by Anonymous*

**Physics**

A brick of mass 0.7 kg slides down an icy roof inclined at 30.0° with respect to the horizontal. (a) If the brick starts from rest, how fast is it moving when it reaches the edge of the roof 2.50 m away? Ignore friction
*October 15, 2009 by Anonymous*

**Math**

a wall in front of a house is shown below if 3/5 of the wall is brick how do you determine the height of the brick portion of the wall
*April 4, 2014 by Anonymous*

**Chemistry Help!!!**

1) When hydrazine (N2H4) is burned in a 253-g brick container, the temperature of the brick increases by 5.13 degrees Celsius. Calculate the quantity of heat released in this raection. The specific heat of brick is 0.840 J/(gC). 2) A sample of coal is burned in a bomb ...
*November 14, 2010 by Sarah*

**fluid mechanics**

A brick weighs 15.0 N and is resting on the ground. Its dimensions are 0.203 m multiplied by 0.0890 m multiplied by 0.0570 m. A number of the bricks are then stacked on top of this one. What is the smallest number of whole bricks (including the one on the ground) that could be...
*November 30, 2008 by cindy*

**Chemistry **

1) When hydrazine (N2H4) is burned in a 253-g brick container, the temperature of the brick increases by 5.13 degrees Celsius. Calculate the quantity of heat released in this raection. The specific heat of brick is 0.840 J/(gC). 2) A sample of coal is burned in a bomb ...
*November 14, 2010 by Sarah*

**Chemistry **

1) When hydrazine (N2H4) is burned in a 253-g brick container, the temperature of the brick increases by 5.13 degrees Celsius. Calculate the quantity of heat released in this raection. The specific heat of brick is 0.840 J/(gC). 2) A sample of coal is burned in a bomb ...
*November 14, 2010 by Sarah*

**Physics**

A brick of mass 1.0 kg slides down an ice roof inclined at 30 degrees with respect to the horizantal. If the brick starts from rest, how fast is it moving when it reaches the edge of the roof 0.90s later? Ignore friction
*October 23, 2010 by Lisa*

**Math**

You plan to construct a brick wall measuring 4.5 m in length, 1.2 m high, and 0.5 m in width. If a brick measures 20 cm x 9 cm x 5 cm, how many bricks will you need? Total volume (to the nearest tenth) = ________ cubic meters. The number of bricks =_________ .
*June 14, 2012 by Leo*

**URGENT Math for Steve **

Which is an algebraic expression for 5 more than z? 5z z+5*** 5z+5 5-z Which is an algebraic expression for the word phrase"8 less than the product of 12 and a number x"? 12x-8 8-12x*** 12-8x 8x-12 Suppose you are building a brick border for a garden by stacking rows of bricks...
*September 3, 2013 by Gabby*

**science**

(A rectangular brick measurses 6cm by 9cm by 20 cm and has a mass of 2.563 kilograms.) What is the brick's surface area in square centimeters, and square centimeters?
*September 16, 2009 by joe*

**science**

(A rectangular brick measurses 6cm by 9cm by 20 cm and has a mass of 2.563 kilograms.) What is the brick's surface area in square centimeters, and square centimeters?
*September 16, 2009 by joe*

**science**

A 2.1-kg brick is placed gently upon a 2.9-kg cart originally moving with a speed of 26 cm/s. Determine the post-collision speed of the combination of brick and cart.
*April 3, 2014 by bizzle*

**physics**

if a brick of mass 7 kg is thrown from a height of 24 ft at an angle of 45 degrees, what impact force will it land with on the ground? what will be the impact of the force on the brick if it lands on. a) concrete b) soft surface
*July 27, 2012 by zais*

**VNS,Math**

In Gulshan the ratio of private homes to apartment is 3:5. If all the apartments are brick made and 1/10 of the private homes are wooden, what is the maximum portion of houses that may be brick?
*October 1, 2013 by Nahar*

**Physics**

How will mechanical energy affect different points of oscillation on a vertical spring? Well i know that mechanical energy is PE and KE...So when the spring is compressed the mechanical energy will equal the PE and when extended or stretched it will equal KE. Does that answer ...
*June 23, 2011 by Janice*

**math**

A brick wall is constructed with 20 rows of bricks. If the height of a brick is 3 7/8 inches and a mortar joint is approximately 5/8 inch, how heigh would the wall be? _______ inches Does Anyone know how to do this one?
*February 17, 2008 by John*

**Physics**

A 2600 kg truck traveling at 72 km/h slams on the brakes and skids to a stop. The frictional force between the truck and the road is 8200 N. Calculate the mechanical work required to stop the truck and the distance the truck travels before stops.
*July 18, 2012 by Jack Hill*

**Physics**

A brick weighs 15.0 N and is resting on the ground. Its dimensions are 0.203 m 0.0890 m 0.0570 m. A number of the bricks are then stacked on top of this one. What is the smallest number of whole bricks (including the one on the ground) that could be used, so that their weight ...
*November 25, 2007 by AL*

**physics**

a box slides down a frictionless hill. the spring stops it. when the box stops how much has the spring compressed. the hill is 5m high, the mas of the box is 20 kg, and the spring constant is 350 n/m
*February 5, 2012 by joe*

**Physics**

the 7kg brick described as (horizontal force of 42N, frictional force of 18 N)is now dropped off a cliff. At one point during the drop the friction due to air resistance has a strength of 14N. what is the acceleration of the brick at this time
*July 23, 2012 by Anonymous*

**mechanical/eginineering**

when a compound gear cluster is created how is the mechanical advantage calculated
*April 29, 2013 by sean*

**physics**

A brick is released with no initial speed from the roof of a building and strikes the ground in 1.50 {s}, encountering no appreciable air drag. A. How tall, in meters, is the building? B.How fast is the brick moving just before it reaches the ground?
*January 26, 2011 by mely*

**physics**

A brick is released with no initial speed from the roof of a building and strikes the ground in 1.50 {s}, encountering no appreciable air drag. A. How tall, in meters, is the building? B.How fast is the brick moving just before it reaches the ground?
*January 26, 2011 by andrea*

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