Friday
August 29, 2014

Posts by Bala


Total # Posts: 66

social study
what are the ways of solving enviromental problems in your communities?
March 27, 2014

Chemistry
P1 p2 v1 v2
June 19, 2012

Chemistry
600cm3 of a gas has a pressure of 1200mmHg find its volume if the pressure is reduced to 1001mmHg
June 19, 2012

northview
A player bounces a 0.46 kg soccer ball off her head, changing the velocity of the ball from i = (8.7 m/s) + (-3.7 m/s) to f = (5.1 m/s) + (4.2 m/s). The ball is in contact with the player's head for 6.7 ms.
November 1, 2011

Physics
A snapshot graph of a travelling wave is shown. The wave is travelling to the right at 50.0 m/s. What is the amplitude if the maximum displacement is 38.0 cm and the total distance travelled by the wave is 16.0 m?
November 22, 2010

Physics
A snapshot graph of a travelling wave is shown. The wave is travelling to the right at 50.0 m/s. What is the amplitude if the maximum displacement is 38.0 cm and the total distance travelled by the wave is 16.0 m?
November 22, 2010

Physics
A wave is travelling to the right at 50.0 m/s. What is the amplitude if the maximum displacement is 38.0 cm and the total distance travelled by the wave is 16.0 m?
November 22, 2010

Physics
1) A microphone has an area of 6.7 cm2. It receives during a 4.62 s time period a sound energy of 2.5x10-11 J. What is the intensity of the sound? 2) Using the intensity in the previous question, what is the variation of pressure in the sound wave if the speed of sound is 343...
November 22, 2010

Physics
1) A microphone has an area of 6.7 cm2. It receives during a 4.62 s time period a sound energy of 2.5x10-11 J. What is the intensity of the sound? 2) Using the intensity in the previous question, what is the variation of pressure in the sound wave if the speed of sound is 343 ...
November 22, 2010

Physics
Thank youuu sooo much i didnt see it thats why i kept posting it :(
November 22, 2010

Physics
1) A microphone has an area of 6.7 cm2. It receives during a 4.62 s time period a sound energy of 2.5x10-11 J. What is the intensity of the sound? 2) Using the intensity in the previous question, what is the variation of pressure in the sound wave if the speed of sound is 343 ...
November 22, 2010

Physics
Two strong magnets on opposite sides of a small table are shown. The long-range attractive force between the magnets keeps the lower magnet in place. Suppose the weight of the table is 23.4 N, the weight of each magnet is 2.67 N, and the magnetic force on the lower magnet is 5...
November 1, 2010

Physics
A block of mass M resting on a 21.5° slope is shown. The block has coefficients of friction μs=0.605 and μk=0.344 with the surface. It is connected via a massless string over a massless, frictionless pulley to a hanging block of mass 2.57 kg. What is the minimum ...
November 1, 2010

Physics
A block of mass M resting on a 21.5° slope is shown. The block has coefficients of friction μs=0.605 and μk=0.344 with the surface. It is connected via a massless string over a massless, frictionless pulley to a hanging block of mass 2.57 kg. What is the minimum ...
November 1, 2010

Physics
Two strong magnets on opposite sides of a small table are shown. The long-range attractive force between the magnets keeps the lower magnet in place. Suppose the weight of the table is 23.4 N, the weight of each magnet is 2.67 N, and the magnetic force on the lower magnet is 5...
November 1, 2010

Physics
A block slides down a frictionless plane having an inclination of 13.0°. If the block starts from rest at the top and the length of this incline is 1.62 m, find the acceleration of the block.
October 31, 2010

Physics
It's asking for the direction of acceleration. I calculated the acceleration already.
October 31, 2010

Physics
Forces of 11.5 N north, 20.4 N east, and 15.7 N south are simultaneously applied to a 3.74 kg mass as it rests on an air table. What is the direction of the acceleration in degrees? (Take east to be 0 degrees and counterclockwise to be positive.)
October 31, 2010

Physics
Forces of 11.5 N north, 20.4 N east, and 15.7 N south are simultaneously applied to a 3.74 kg mass as it rests on an air table. What is the magnitude of its acceleration?
October 31, 2010

Physics
Forces of 11.5 N north, 20.4 N east, and 15.7 N south are simultaneously applied to a 3.74 kg mass as it rests on an air table. What is the magnitude of its acceleration?
October 31, 2010

Physics
A heavy freight train has a mass of 14000 metric tons. If the locomotive can pull with a force of 645000 N, how long does it take to increase it's speed from 0 to 69.8 km/h?
October 25, 2010

Physics
A heavy freight train has a mass of 14000 metric tons. If the locomotive can pull with a force of 645000 N, how long does it take to increase it's speed from 0 to 69.8 km/h?
October 25, 2010

physics
A heavy freight train has a mass of 14000 metric tons. If the locomotive can pull with a force of 645000 N, how long does it take to increase it's speed from 0 to 69.8 km/h?
October 25, 2010

Physics
A heavy freight train has a mass of 14000 metric tons. If the locomotive can pull with a force of 645000 N, how long does it take to increase it's speed from 0 to 69.8 km/h?
October 25, 2010

Biology
Variation in biology is a) inevitable b) exciting c) the raw material for natural selection d) best described by statistics e) all of the above
October 14, 2010

Physics
A speedboat starts from rest and accelerates at +1.94 m/s2 for 7.00 s. At the end of this time, the boat continues for an additional 6.00 s with an acceleration of +0.515 m/s2. Following this, the boat accelerates at -1.58 m/s2 for 8.00 s. What is the velocity of the boat at t...
October 6, 2010

Physics
A sprinter explodes out of the starting block with an acceleration of +2.79 m/s2 , which she sustains for 1.65 s. Then her acceleration drops to zero for the rest of the race. What is her velocity at t = 1.65 s and at the end of the race?
October 6, 2010

Physics
A sprinter explodes out of the starting block with an acceleration of +2.79 m/s2 , which she sustains for 1.65 s. Then her acceleration drops to zero for the rest of the race. What is her velocity at t = 1.65 s and at the end of the race?
October 5, 2010

Physics
A sprinter explodes out of the starting block with an acceleration of +2.79 m/s2 , which she sustains for 1.65 s. Then her acceleration drops to zero for the rest of the race. What is her velocity at t = 1.65 s and at the end of the race? Answer 1 of 2
October 5, 2010

Physics
You are driving to the grocery store at 18.2 m/s. You are 120.0 m from an intersection when the traffic light turns red. Assume that your reaction time is 0.270 s and that your car brakes with constant acceleration.How far are you from the intersection when you begin to apply ...
October 5, 2010

Physics
You are driving to the grocery store at 18.2 m/s. You are 120.0 m from an intersection when the traffic light turns red. Assume that your reaction time is 0.270 s and that your car brakes with constant acceleration.How far are you from the intersection when you begin to apply ...
October 5, 2010

ph
You are driving to the grocery store at 18.2 m/s. You are 120.0 m from an intersection when the traffic light turns red. Assume that your reaction time is 0.270 s and that your car brakes with constant acceleration.How far are you from the intersection when you begin to apply ...
October 5, 2010

Physics
no i didnt. did you get 13 and 14
October 5, 2010

Physics
lol sorry ma internet went all hay wire on me!!! i got 255 m for the entire run for questin 7
October 5, 2010

Physics
thnx......i found out my mistake. i didnt convert the distance to meters :)
October 5, 2010

Physics
An 18-year-old runner can complete a 10.0-km course with an average speed of 4.48 m/s. A 50-year-old runner can cover the same distance with an average speed of 4.18 m/s. How much later should the younger runner start in order to finish the course at the same time as the older...
October 5, 2010

Physics
You are driving to the grocery store at 18.2 m/s. You are 120.0 m from an intersection when the traffic light turns red. Assume that your reaction time is 0.270 s and that your car brakes with constant acceleration.How far are you from the intersection when you begin to apply ...
October 5, 2010

Physics
You are driving to the grocery store at 18.2 m/s. You are 120.0 m from an intersection when the traffic light turns red. Assume that your reaction time is 0.270 s and that your car brakes with constant acceleration.How far are you from the intersection when you begin to apply ...
October 5, 2010

Physics
thank you :)
October 5, 2010

Physics
You are driving to the grocery store at 18.2 m/s. You are 120.0 m from an intersection when the traffic light turns red. Assume that your reaction time is 0.270 s and that your car brakes with constant acceleration. How far are you from the intersection when you begin to apply...
October 5, 2010

Physics
i got 255m but am sure we have different numbers in the question.
October 5, 2010

Physics
nope it was positive :)
October 5, 2010

Physics
u= initial velocity. omg question 7 was sooo stupid!! all you do is get the distance from the house to the tree and divide by the (final time - initial time. ( we only consider the distance form the house to the tree because according to displacement when you run from lets say...
October 5, 2010

Physics
you welcome. for the second part use this equation s=1/2(u+v)t s= to the distance you got in the previous answer
October 5, 2010

Physics
do u have an extension number??? u can cal me 51185. he has outline the equations above mgh=1/2m(final velocity-initial velocity) >therefore the m will cross out on both sides >then we knw that accelaration= -9.8m/s2 >do the calculations on the left side ov the ...
October 5, 2010

Physics
are u at mac????....doing cappa questions???? .....i got the answer...its 1.55*10^2 m
October 5, 2010

Physics
why do we subtract the two velocities?
October 5, 2010

Physics
A skier is gliding along at 7.49 m/s on horizontal, frictionless snow. He suddenly starts down a 14.4° incline. His speed at the bottom is 28.5 m/s. What is the length of the incline?
October 5, 2010

Physics
A skier is gliding along at 7.49 m/s on horizontal, frictionless snow. He suddenly starts down a 14.4° incline. His speed at the bottom is 28.5 m/s. What is the length of the incline?
October 5, 2010

Physics
A skier is gliding along at 7.49 m/s on horizontal, frictionless snow. He suddenly starts down a 14.4° incline. His speed at the bottom is 28.5 m/s. What is the length of the incline?
October 4, 2010

Physics
A skier is gliding along at 7.49 m/s on horizontal, frictionless snow. He suddenly starts down a 14.4° incline. His speed at the bottom is 28.5 m/s. What is the length of the incline?
October 4, 2010

Physics
A skier is gliding along at 7.49 m/s on horizontal, frictionless snow. He suddenly starts down a 14.4° incline. His speed at the bottom is 28.5 m/s. What is the length of the incline?
October 4, 2010

Physics
A rock is tossed straight up with a velocity of 32.1 m/s. When it returns, it falls into a hole 20.1 m deep. What is the rock's velocity as it hits the bottom of the hole?
October 4, 2010

Physics
A bicyclist makes a trip that consists of three parts, each in the same direction (due north) along a straight road. During the first part, she rides for 22 minutes at an average speed of 6.60 m/s. During the second part, she rides for 36 minutes at an average speed of 5.40 m/...
October 4, 2010

Physics
A bicyclist makes a trip that consists of three parts, each in the same direction (due north) along a straight road. During the first part, she rides for 22 minutes at an average speed of 6.60 m/s. During the second part, she rides for 36 minutes at an average speed of 5.40 m/...
October 4, 2010

Physics
Larry leaves home at 3:02 and runs at a constant speed to the lamppost. He reaches the lamppost at 3:18, immediately turns, and runs to the tree. Larry arrives at the tree at 3:26. What is Larry's average velocity during his trip from the lamppost to the tree?
October 4, 2010

Physics
A bicyclist makes a trip that consists of three parts, each in the same direction (due north) along a straight road. During the first part, she rides for 22 minutes at an average speed of 6.60 m/s. During the second part, she rides for 36 minutes at an average speed of 5.40 m/...
October 4, 2010

Physics
Larry leaves home at 3:02 and runs at a constant speed to the lamppost. He reaches the lamppost at 3:18, immediately turns, and runs to the tree. Larry arrives at the tree at 3:26. What is Larry's average velocity during his trip from the lamppost to the tree?
October 4, 2010

Physics
In 1865, Jules Verne suggested sending people to the Moon by launching a space capsule with a 228.8 m long cannon. The final speed of the capsule must reach 11.39 km/s. What acceleration would the passengers experience?
October 3, 2010

Physics
In 1865, Jules Verne suggested sending people to the Moon by launching a space capsule with a 228.8 m long cannon. The final speed of the capsule must reach 11.39 km/s. What acceleration would the passengers experience?
October 3, 2010

Physics
An object is thrown vertically upward with a speed of 31.8 m/s. How long does it take to reach this highest altitude?
October 3, 2010

11th grade Algebra
-3/5 because -3x - 4= 2x-4
October 3, 2010

Physics
1.181 *10^3
October 3, 2010

physics
An object is thrown vertically upward with a speed of 31.8 m/s. How high does it rise?
October 3, 2010

9th grade
106,141,181
September 6, 2010

nutrition
What arguments are being raised by the Grocery Manufacturers of America?
January 24, 2010

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