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April 20, 2014

Search: A block of metal has a width of 3.2 , a length of 17.1 , and height of 3.9 . Its mass is 1.2 . Calculate the density of the metal

Number of results: 7,673

Chemistry
Block A of an unknown metal has a volume of 125cm^3 . Block B of a different metal has a volume of 145cm^3. If block A has a greater mass than block B, what can be said if the relative densities of two metal?
Friday, January 18, 2013 at 2:27pm by Quan

precalc
Hi. Can someone please help me with this problem? A rectangular block of metal weighs 3 oz. How many lbs will a similar block of the same metal weigh if the edges are twice as long?
Wednesday, October 31, 2007 at 6:29pm by Charlotte

shakhenbi
a block of metal has a length of 20cm, breadth 10cm and height 5cm. its mass is 2.7kg. find the density of the metal in g/cm3. find out what the block is made of.
Friday, August 19, 2011 at 1:16pm by tomba

physics
a block of metal has a length of 20cm, breadth 10cm and height 5cm. its mass is 2.7kg. find the density of the metal in g/cm3. find out what the block is made of.
Friday, August 19, 2011 at 1:21pm by tomba

college chem
In this experiment a hot metal block at 100oC is added to cold water in a calorimeter. The heat lost by the metal block equals the heat gained by the water and the two end up at the same temperature. In one experiment, the mass of the metal block is 89.5 grams, the volume of ...
Thursday, October 8, 2009 at 4:30pm by Sarah

Chemistry
If 72.4 kJ of heat is applied to a 95.2 g block of metal, the temperature of the metal increases by 10.7 C. Calculate the specific heat capacity of the metal in J/g C?
Wednesday, May 4, 2011 at 11:57pm by Mystery Mania

maths-urgent
a metal block of length 4cm ,breadth 3cm and height 2.5 weighs 500g.what is the mass of a block of length 5cm,breadth 4cm made of the same metal.
Monday, January 7, 2013 at 7:42am by manpreet

physics
A metal block of mass 5kg lies on a rough horizontal platform.If a horizontal force of 8N applied to the block through its centre of mass just slides the block on the platform,then the coefficient of limiting friction between the block and the platform is
Sunday, February 24, 2013 at 12:18pm by Kenny

Chem
A block of metal has a width of 3.2 , a length of 17.1 , and height of 4.8 . Its mass is 1.2 . Calculate the density of the metal.
Wednesday, September 22, 2010 at 8:44am by Anonymous

chemistry
A block of metal has a width of 3.2 , a length of 17.1 , and height of 4.8 . Its mass is 1.2 . Calculate the density of the metal.
Monday, June 3, 2013 at 5:58pm by sue

Chemistry
A block of metal has a width of 3.2 , a length of 17.1 , and height of 5.8 WHAT is the VOLUME OF THE BLOCK?
Thursday, August 28, 2008 at 3:18pm by Beth

physics
As part of a training schedule a weightlifter pushes a heavy metal block along the floor. The lifter applies a force of 850 N downwards on the block at an angle of 65° to the vertical (25° to the horizontal). The weightlifter pushes the block forwards 4 m in 1.6 s. Calculate ...
Tuesday, February 28, 2012 at 10:26am by alex

SAT Math
A cubical block of metal weighs 6 pounds. How much will another cube of the same metal weigh if its sides are twice as long?
Thursday, June 3, 2010 at 11:16am by Hardy

chem
A block of metal has a width of 3.2cm, a length of 17.1cm, and height of 3.6 cm. Its mass is 1.3 kg. Calculate the density of the metal.
Wednesday, September 7, 2011 at 8:38pm by jake

Chemistry
A block of metal has a width of 3.2 cm , a length of 17.1cm , and height of 5.8cm . Its mass is 1.5kg . Calculate the density of the metal.
Saturday, September 29, 2012 at 7:19pm by Rae

Science
Caleb is holding a metal block in his hand. What could he do to decrease the thermal energy of the block? a) cool it b) drop it c) hit it d) melt it
Wednesday, November 16, 2011 at 5:24pm by Susana

college chem
n one experiment, the mass of the metal block is 93.3 grams, the volume of water used is 96.3 mL, the temperature of the cold water extrapolated to the time of mixing is 20.4oC, and the temperature of the metal block and water extrapolated back to the time of mixing is 28.7oC...
Thursday, October 8, 2009 at 4:30pm by san

Fluid ''Physics''
A block of metal floats in oil of density 700Kg/m3 with 3/4 of volume in mass. Find the density of metal.
Sunday, November 6, 2011 at 3:32pm by Said

chemistry
A block of metal has a width of 3.2cm, a length of 17.1 cm, and height of 5.2 cm. Its mass is 1.1 kg. Calculate the density of the metal
Saturday, September 11, 2010 at 6:08pm by Javier

Physics
A 5.00x10^2-g block of metal absorbs 5016 J of heat when its temperature canges from 20.0 C to 30.0 C. Calculate the specific heat of the metal ..?
Tuesday, March 29, 2011 at 7:21pm by Alayna

chemistry
A block of metal has a width of 3.2 cm, a length of 17.1 cm, and height of 3.9cm . Its mass is 1.3kg . Calculate the density of the metal.
Sunday, September 1, 2013 at 2:36pm by joe

Chemistry
A block of metal has a width of 3.2 cm, a length of 17.1 cm, and height of 5.8cm . Its mass is 1.5kg . Calculate the density of the metal.
Monday, September 2, 2013 at 5:18pm by Jenn

Chem
A block of metal has a width of 3.2 cm , a length of 17.1 cm , and height of 5.2cm . Its mass is 1.2kg . Calculate the density of the metal
Thursday, September 12, 2013 at 9:05pm by Jillian

Chem
A block of metal has a width of 3.2 cm, a length of 17.1 cm, and height of 4.3cm . Its mass is 1.2kg . Calculate the density of the metal.
Monday, September 16, 2013 at 11:19am by Cf

Science
A block of metal weighing 2kg is resting on a frictionless plane. It is struck by a jet releasing water at the rate of 1kg/s and at a speed of 5m/s. Find the initial acceleration of the block.
Friday, February 10, 2012 at 1:02pm by Kushagra

gat
a block of metal has the dimensions of 2cm, 2cm,and 1cm. the block has a mas of 400g.what is the density
Thursday, May 13, 2010 at 12:20am by gurl

chemistry
A heater caused the temperature of a 550 g Aluminum block to change from 22 degrees C to 145 degrees C. How many calories were required to heat the metal block?
Monday, April 11, 2011 at 7:16pm by cam

Chemistry
A 34.6 g block of metal at 2.1oC is dropped into 100.0 g of water at 97.3oC. If the specific heat of the metal is 0.084 cal/goC, what will the final temperature of the water be?
Sunday, April 24, 2011 at 11:13pm by Kat

physics
A metal block of mass m is attached to the ceiling by a spring. Connected to the bottom of this block is a string that supports a second block of the same mass m, as shown in the figure . The string connecting the two blocks is now cut.What is the net force acting on the two-...
Sunday, October 11, 2009 at 3:33pm by kam

chemistry
A block of metal has a width of 3.2 cm, a length of 17.1 cm, and height of 3.7 cm. Its mass is 1.3 kg. Calculate the density of the metal.
Friday, August 27, 2010 at 10:56pm by Mely

Chemistry
How do you do this? A block of metal measuring 3.0 cm X 4.0 cm X 5.0 cm has a mass of 470.0g. What is the density of the metal in grams per cubic centimeter?
Sunday, October 16, 2011 at 8:27pm by Miranda

Geometry
Nickles are made from a metal that is a mixture of nickle and copper. About how many nickles can be made if a 1 meter cubed block of this metal is melted down?
Tuesday, June 7, 2011 at 5:02pm by Caty

chemistry
A metal block of mass 11.5 g gives off 360 J of heat while cooling from 99.7 to 32.5 oC. What is the specific heat of the metal in J g-1 oC-1?
Tuesday, March 26, 2013 at 10:27pm by d

chemistry
A metal block of mass 11.5 g gives off 360 J of heat while cooling from 99.7 to 32.5 oC. What is the specific heat of the metal in J g-1 oC-1?
Tuesday, March 26, 2013 at 10:27pm by d

Math
Is the answer to this problem 12 pounds? A cubical block of metal weighs 6 pounds. How much will another cube of the same metal weigh if its sides are twice as long? My work: 6/12=6/x
Monday, August 22, 2011 at 6:13pm by Jay

physics
An 11.4 kg block of metal is suspended from a scale and immersed in water, as in the figure below. The dimensions of the block are 12.0 cm multiplied by 11.1 cm multiplied by 11.1 cm. The 12.0 cm dimension is vertical, and the top of the block is 5.00 cm below the surface of ...
Tuesday, April 17, 2012 at 1:16pm by PJ

PHYSICS!
A 8.52 -kg block of metal is suspended from a scale and immersed in water as in Figure P9.30. The dimensions of the block are 12.0 cm x 10.0 cm x 10.0 cm. The 12.0-cm dimension is vertical, and the top of the block is 9.0 cm below the surface of the water. (a) What are the ...
Sunday, October 28, 2012 at 2:02pm by EMM

PHYSICS!
A 8.52 -kg block of metal is suspended from a scale and immersed in water as in Figure P9.30. The dimensions of the block are 12.0 cm x 10.0 cm x 10.0 cm. The 12.0-cm dimension is vertical, and the top of the block is 9.0 cm below the surface of the water. (a) What are the ...
Sunday, October 28, 2012 at 7:57pm by Emily

chemistry
If 7.24 kJ of heat is applied to a 952 g block of metal, the temperature increases by 10.7 degrees Celsius. Calculate the specific heat capacity of the metal in J/g degrees Celsius.
Monday, March 29, 2010 at 10:15pm by Jack

physics
A block of ice of mass m rests on the very top of a smooth metal hemishpere. The tiniest nudge sends it sliding down the side of the hemisphere. The acceleration of gravity is g and the radius of the hemisphere is R. At what angle, with respect to the vertical, does the block ...
Wednesday, February 6, 2013 at 1:49pm by ap

math
I don't like this question. There is simple purely mathematical solution volume of 1 disc = π(2^2)(.1) = .4π cm^3 so number of discs = 1000/(.4π) or 795.8 so they can make 795 discs Logistically, this is a very ambiguous question - is the 1000 cm^3 in a block of...
Thursday, October 14, 2010 at 11:38am by Reiny

chemistry
If the question is about making predictions when a metal is placed in a solution of a salt of another metal, the rule is: a metal (in its elementary form) will replace any other metal in a salt, if the first one is higher than the second on the metal activity series: (Broken ...
Saturday, June 20, 2009 at 11:37am by GK

Physics
A block of mass 3m is placed on a frictionless horizontal surface, and a second block of mass m is placed on top of the first block. The surfaces of the blocks are rough. A constant force of magnitude F is applied to the first block as shown in the figure. (a) Construct free-...
Wednesday, October 17, 2012 at 2:07pm by Brette

Math
Block A & B slide on lubricated surfaces for which friction is .1. knowing that the system is released from rest, determine the velocity of block B after 5 seconds block A is 10 N block B 20N and block B is on a 30 degree incline connected to a at top of the surface
Wednesday, March 10, 2010 at 12:38am by scott

Physics
A block of mass 3m is placed on a frictionless horizontal surface, and a second block of mass m is placed on top of the first block. The surfaces of the blocks are rough. A constant force of magnitude F is applied to the first block. Assume that the upper block does not slip ...
Monday, September 24, 2012 at 1:35am by Oyster

Physics.
A block of mass 3m is placed on a frictionless horizontal surface, and a second block of mass m is placed on top of the first block. The surfaces of the blocks are rough. A constant force of magnitude F is applied to the first block. a) Identify the horizontal force that ...
Tuesday, October 16, 2012 at 3:17pm by Kelsey

Chemistry Stoichiometry
Sulfuric acid can dissolve aluminum metal according to the following reaction. Suppose you wanted to dissolve an aluminum block with a mass of 25.7 . How many grams of H2 gas would be produced by the complete reaction of the aluminum block?
Saturday, October 27, 2012 at 4:46am by Brianna

Science
What is the material of the block? Metal? Wood? Ice?
Tuesday, September 20, 2011 at 8:10pm by PsyDAG

Chemistry
The heat lost or gained by a system is related to its temperature change by a property called its heat capacity. The molar heat capacity of metals at or above room temperature equals 24.92 J K-1mol-1. The temperature of a block of copper metal (molar mass 63.55 g mol-1) fell ...
Wednesday, February 6, 2013 at 12:40pm by Caitlin

Chemistry!
The heat lost or gained by a system is related to its temperature change by a property called its heat capacity. The molar heat capacity of metals at or above room temperature equals 24.92 J K-1mol-1. The temperature of a block of copper metal (molar mass 63.55 g mol-1) fell ...
Sunday, February 17, 2013 at 8:33pm by Anonymous

Math
How many two block towers can you make from: 1 black block,1 red block, and 1 blue block? Please explain.
Thursday, September 8, 2011 at 8:44pm by Chris

Chemistry
I need help classifying these as physical and chemical properties! 1. sodium metal in chlorine gas releases luster. 2. sodium metal has a metallic silver luster. 3. sodium metal in water porduces hydrogen gas. 4. sodium metal melts to a liquid at 98 degrees. 5. sodium metal ...
Tuesday, March 1, 2011 at 9:42pm by Emily Grossman

chemisrty
565 g block of aluminum metal is cooled from 243 c to 100 c is what?
Saturday, September 14, 2013 at 1:49pm by george

Chemistry
In an experiment 1.015 g of a metal carbonate, containing an unknown metal M, is heated to give the metal oxide and 0.361 g CO2. MCO3(s) + heat MO(s) + CO2(g) What is the identity of the metal M?
Thursday, September 23, 2010 at 6:20pm by Noelle

Chemistry: Answer check please!
All of these look ok to me with my only misgivings about 9. Technically, if I react Na metal with HCl, I get MgCl2 + H2 which looks to me as if a metal is replace a non-metal. And I can think of a number of redox reactions in which the metal is oxidized and the non-metal is ...
Saturday, April 2, 2011 at 7:32pm by DrBob222

chemistry
3.) A 5.00 x 10^2 g block of metal absorbs 5016 joules of heat when its temperature changed from 20 degrees C to 30 degrees C. Calculate the specific heat of the metal. I used the formula and came with two answers 100.32 joules and 10.01 joules. Which is correct?
Saturday, February 9, 2008 at 11:16am by mhaidar9108

AP Physics B
I have one our part question left that I just don't understand! Please help me!! Part 1 An 11.6 kg block of metal is suspended from a scale and immersed in water as in the figure. The dimensions of the block are 12.9 cm × 9.7 cm × 9.7 cm. The 12.9 cm dimension is ...
Tuesday, January 15, 2013 at 8:30pm by Taylor

Physics
I've got a question: Imagine this scenario where someone releases a marble down an inclined ramp and at the end of the ramp a block is fixed. So the marble will roll down the ramp and it will collide with the block. Since the block is fixed, m(marble)u(marble) + m(block)u(...
Saturday, November 27, 2010 at 5:11am by Cheesecake

Physics
a 2.0 kg block moving at 8 m/s on a frictionless surface collides elastically with a block at rest. The first block moves in the same direction at 2 m/s. What is the second block's mass?
Wednesday, April 3, 2013 at 10:10pm by Henry

science
caleb is holding a metal block in his hand.what could he do to decrease the thermal energy?
Thursday, December 8, 2011 at 8:32pm by Anonymous

Physics
A 10-g bullet is shot vertically into a stationary 8-kg block. The block lifts upward 3.0 mm. The bullet penetrates the block in a time of .001 seconds. Assume the force exerted on the block is constant. What is the impulse imparted on the block by the bullet?
Wednesday, November 30, 2011 at 2:52pm by Zach

Physics
A block hangs in equilibrium from a vertical spring. When a second identical block is added, the original block sags by 5.00 cm. What is the oscillation frequency of the two block system?
Tuesday, January 11, 2011 at 6:48pm by Tara

science 8th grade
what will happen if a metal block that is 60°c is placed in water that is 20°c?
Sunday, April 24, 2011 at 6:29pm by Antoinette-Hope

Physics
A block of mass m = 2.00 kg rests on the left edge of a block of mass M = 8.00 kg. The coefficient of kinetic friction between the two blocks is 0.300, and the surface on which the 8.00- kg block rests is frictionless. A constant horizontal force of magnitude F = 10.0 N is ...
Wednesday, July 25, 2012 at 8:24pm by Zac

physics
The density of an unspecified material is 3.27 g/cm (cubed) . if the mass of a block of this material is 10.9kg, what is the volume of the block in cubic meters? A Wooden block is pulled to the right across a level surface at a constant velocity by a force of 47 Newtons, the ...
Thursday, May 24, 2012 at 5:03pm by Jen

physics
A 20kg block is being pulled by a 150N force,the block is initially at rest,if the coefficient of frictionbetween the block and the surface is 0.3,find (a)the normal force,(b)the friction force acting on the block,(c)find the acceleration of the block
Friday, October 28, 2011 at 12:33am by amaka

chemistry
Suppose that you wanted to be sure that a metal ion, any metal ion, would dissolve in water. What salt of the metal ion compound would you choose? 1. the hydroxide (OH−) salt of the metal ion 2. the carbonate (CO2− 3 ) salt of the metal ion 3. the nitrate (NO−...
Wednesday, September 19, 2012 at 5:15pm by cheri

Physics
A block has mass 800 g, whose is fasten to a spring with spring constant k is 70 N/m. The block is pulled a distance x = 15 cm from its equilibrium position at x = 0 on a frictionless surface and released from rest at t = 0. (a) What force does the spring exert on the block ...
Sunday, December 18, 2011 at 8:38am by Dia

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...
Monday, July 23, 2012 at 12:55pm by Edward

physics
A Block has a mass of 50.0 kilograms. the coefficient of static friction between the block and the level floor on which it rests is 0.428 A horizontal force of 618 newtons is applied to the block to the right, as shown. will the block move?
Thursday, May 24, 2012 at 1:30pm by Jen

physics
A simple harmonic oscillator consists of a 1.1 kg block attached to a spring (k = 180 N/m). The block slides on a horizontal frictionless surface about the equilibrium point x = 0 with a total mechanical energy of 3.0 J. (a) What is the amplitude of the oscillation? (b) How ...
Sunday, January 9, 2011 at 4:59pm by kylie

Chemistry 106
An unidentified metal forms an ionic compound with the carbonate anion. The metal forms a 2+ cation. If the minimum ration of the number of protons in the metal to the oxygen protons s 5:6, what is the metal?
Wednesday, October 13, 2010 at 12:28pm by Samantha

Science
Calculate:what is the density of a metal block that has a mass of 750 grams and a volume of 55 cubic centimeters?
Wednesday, October 12, 2011 at 8:31pm by Faith

PHYSICS
1. A 500.0 g metal block absorbs 1.125 × 104 J of heat to raise its temperature by 50.0 K. What is the substance?
Tuesday, June 5, 2012 at 9:31pm by Pat

Physics
A block is suspended from the end of a spring. An external force holds the block so that initially the spring is not stretched or compressed. When the block is released, it oscillates up and down between positions A and B. If the mass of the block is 0.5 kg and the spring ...
Monday, February 20, 2012 at 7:21pm by Mary

Chemistry
The specific heat of copper metal was determined by putting a piece of the metal weighing 33.6 g in hot water. The quantity of heat absorbed by the metal was calculated to be 47 J from the temperature drop of the water. What was the specific heat of the metal if the ...
Thursday, October 9, 2008 at 6:42pm by Glenna

Chemistry
The specific heat of copper metal was determined by putting a piece of the metal weighing 33.6 g in hot water. The quantity of heat absorbed by the metal was calculated to be 47 J from the temperature drop of the water. What was the specific heat of the metal if the ...
Saturday, October 18, 2008 at 10:35pm by Glenna

Science
The specific heat of copper metal was determined by putting a piece of the metal weighing 33.6 g in hot water. The quantity of heat absorbed by the metal was calculated to be 47 J from the temperature drop of the water. What was the specific heat of the metal if the ...
Saturday, October 18, 2008 at 10:42pm by Brittany

Chemistry
The specific heat of copper metal was determined by putting a piece of the metal weighing 39.4 g in hot water. The quantity of heat absorbed by the metal was calculated to be 47 J from the temperature drop of the water. What was the specific heat of the metal if the ...
Tuesday, June 7, 2011 at 8:25am by Lance

physics
Block 1, of mass1 = 0.550kg , is connected over an ideal (massless and frictionless) pulley to block 2, of mass2 , as shown. For an angle of = 30.0 and a coefficient of kinetic friction between block 2 and the plane of = 0.300mu(kinetic friction), an acceleration of magnitude...
Tuesday, October 23, 2012 at 7:25pm by Samantha

PHYSICS
The heat capacity per atom in a solid near room temperature is 3 k with k the Boltzmann constant. If you compute the heat capacity of the 500.0 g metal block, and divide that by 3 k, you get the number of atoms in tha block. If you then divide the mass of 0.5000 kg by the ...
Tuesday, June 5, 2012 at 9:31pm by Count Iblis

Physics
we must apply a force of magnitude 82.0 N to hold the block stationary at x=-2.0 cm. From that position, we then slowly move the block so that our force does +8.0 J of work on the spring–block system; the block is then again stationary. What are the block's positions, in cm...
Wednesday, November 4, 2009 at 3:46pm by Shawna

Physics
When the three blocks in the figure below are released from rest, they accelerate with a magnitude of 0.370 m/s2. Block 1 has mass M, block 2 has 5M, and block 3 has 5M. What is the coefficient of kinetic friction between block 2 and the table? block 1 is haging off the table ...
Thursday, November 18, 2010 at 9:27pm by Will

physical
A 0.8 kg block of wood has an initial velocity of 0.25 m/s as it begins to slide across a table. The block comes to rest over a distance of 0.72m. a) what is the average frictional force on the block? b)How much work is done on the block by friction? c)How much work is done on...
Friday, August 17, 2012 at 8:34pm by sara

Math
a cylindrical block weighs 6 kg. how much will another cube of the same metal weigh if its sides are twice as long?
Tuesday, September 3, 2013 at 8:28pm by Johnny

cary collage
"A 2.5-kg block slides down a 25 degree inclined plane with constant acceleration. The block starts from rest at the top. At the bottom, its velocity reaches 0.65 m/s. The length of the incline is 1.6m. a) What is the acceleration of the block? b) What is the coefficient of ...
Monday, September 27, 2010 at 12:34am by sahan

physics
Each of 108 identical blocks sitting on a frictionless surface is connected to the next block by a massless string. The first block is pulled with a force of 108N. Part A. What is the tension in the string connecting block 108 to block 107? Part B. What is the tension in the ...
Sunday, October 9, 2011 at 6:04pm by Josh

Chemistry
0.356 grams of an unknown metal reacts with oxygen to form 452 milligrams of the metal oxide. Identify the metal
Wednesday, April 24, 2013 at 10:42pm by Kamal

physics
a 2kg block of wood rests on a long table top. a 5 gram bullet moving horizontally with speed of 150m/s is shoot into the block and stricks in it then block slides 270cm along the table and stops. find a)speed of block after impact b)friction force between block and table.
Sunday, February 19, 2012 at 4:39am by yonas

Physics
A wooden block of mass m = 2.3 kg starts from rest on an inclined plane sloped at an angle 26 degrees from the horizontal. The block is originally located 1.9 m from the bottom of the plane. Assume the inclined plane is friction less. 1)What is the magnitude of the component ...
Tuesday, February 25, 2014 at 10:16pm by Sydney

physics
upon fully dissolving 2g of a metal in sulfuric acid6.8g of the metal sulphate is formed. The equivalent weight of the metal is
Monday, November 5, 2012 at 5:06am by avadhesh

Physics
What is the acceleration of the upper block? The coefficient of kinetic friction between the lower block and upper block is 0.0005. The coefficient of kinetic friction between lower block and floor is 0.0001. Upper block is 1kg, lower block is 2kg, and Force of 20N is applied ...
Tuesday, May 25, 2010 at 1:00am by Doug

physics
A simple harmonic oscillator consists of a 1.1 kg block attached to a spring (k = 180 N/m). The block slides on a horizontal frictionless surface about the equilibrium point x = 0 with a total mechanical energy of 3.0 J. (a) What is the amplitude of the oscillation? (b) How ...
Sunday, January 9, 2011 at 8:56pm by Anonymous

Math/Physics2
The block has mass m=8.5 kg and lies on a fixed smooth frictionless plane tilted at an angle theta=20.0 degrees to the horizontal. Determine the acceleration of the block as it slides down the plane. If the block starts from rest 15.0 m up the plane from its base, what will be...
Wednesday, September 23, 2009 at 3:38pm by Era

Physics
A block of mass m1 is on top of a block of mass m2. Block 2 is connected by an ideal rope passing through a pulley to a block of unknown mass m3 as shown. The pulley is massless and frictionless. There is friction between block 1 and 2 and between the horizontal surface and ...
Sunday, June 23, 2013 at 7:24pm by Rose

Physics
A block slides down a frictionless plane having an inclination of 18.9deg. If the block starts from rest at the top and the length of this incline is 2.21m, find the acceleration of the block. b). What is the block's speed when it reaches the bottom of the incline?
Sunday, October 28, 2012 at 2:02pm by joane

Chemistry
HELP!!! An unknown metal having a mass of 14.00g is dropped into 11.00mL of water at 20.0 degrees Celcius. The starting temperature of the chunk of metal is 100.0C. The final temperature of the water and metal is 32.5C. What is the specific heat of the metal?
Wednesday, April 6, 2011 at 1:01am by Marie

phisics
a 20kg block is connested to a 30kg block by a string that passes over a frictionless pully. the 30kg block is connected to a spring that has niglible mass and a force constant of 250n/m.the 20kg block is pulled 20cm down the incline(40 degrees) and released from rest find the...
Wednesday, April 7, 2010 at 5:24am by sello

physics (lVERY LONG)
A force of 200 N is being exerted on a blocki, which has a mass of 10 kg and is on 30 degrees inclined plane. The force is acting up the plane and parallel to it. The coefficient of friction between the block and the plane is .3 and the plane is 12 m long. a. What is the ...
Monday, November 22, 2010 at 7:18pm by rhet butler

pHysics !!
A 20-g bullet is fired horizontally into a 980 g block of wood suspended by a long cord. The bullet sticks in the block and causes the block to swing 15 cm above its initial level. a) What is the momentum of the bullet before it hit the block? b) Determine the velocity of the ...
Sunday, September 1, 2013 at 11:23am by kent

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