Number of results: 152,341
Science ( physics )
A balloon is rising with a velocity of 4.9 m/sec releases an object from height of 96 m. a) How long after its release will the object reach the ground? b) what is the velocity of the object as it hits the ground? The object has in intial vertical velocity, at an initial ...
Tuesday, August 1, 2006 at 5:40am by Margie
1) Why is frequency an element needed in the sound industry? and 2) When there is a sound pressure level of two different sources with different frequencies, why do sound pressure levels have to be determined in each seperate frequency? 1) The sound industry sells equipment ...
Thursday, September 21, 2006 at 12:23am by Kat
what is a cut off frequency and it's application? I need the application explaination more then the definition of cut off frequency!!! Wouldn't it be nice to have a chip that detected blue light, but not red? Could cutoff frequency be used? Of course is could, and is.
Thursday, September 21, 2006 at 9:07pm by Kat
what is the value of measurement?????? What is the value of measurement? I hope I am understanding your question. If one wants to know the number of teeth in a horses' mouth, counting is quite valuable.
Saturday, September 23, 2006 at 6:13pm by Katrina
Science-Physics: Space Station
Hello, I am having trouble with this physics problem. Any suggestions with this? Sketch and calculate a spacestation that would meet the requirement of having a 2m tall person experience a 10 % difference in centripetal acceleration between bottom of feet and top of head when ...
Wednesday, October 11, 2006 at 9:21pm by Gerald
a horizontal wire is stretched between two vertical poles. when a 12.0-N weight is suspended at its center, the wire sags until the angle between its halves is 110 degrees. what are the forces exerted by each half of the wire in supporting the weight? i don't really get the ...
Sunday, November 12, 2006 at 3:43pm by Katrina
Science - Physics
When a projectile is fired horizontally, which of the components of its motion is (A) motion at constatnt speed (B) uniformly accelerated motion (C) If the initial velocity of the projectile is increased, what effect will this have on the time it takes the projectile to fall ...
Wednesday, December 6, 2006 at 7:53pm by Nicole
A diver descends from a salvage ship to the ocean floor at a depth of 35 m below the surface. The density of ocean water is 1.025x10^3 kg/m^3. a) Calculate the guage pressure on the diver on the ocean floor. b) Calculate the absolute pressure on the diver on the ocean floor. ...
Sunday, January 21, 2007 at 4:46pm by johnny
A 0.2 kilogram baseball is thrown vertically downwards towards to the same horizontal floor. The baseball possesses an initial velocity of 30 meters per second. The height is 10.00m. (A) Calculate the POTENTIAL GRAVITATIONAL ENERGY and KINETIC ENERGY of the baseball at the ...
Monday, February 19, 2007 at 6:21pm by Katrina
You watch a distant woman driving nails into her front porch at a regular rate of 1 stroke per second. You hear the sound of the blows exactly synchronized with the blows you see. And then you hear two more blows after you see her stop hammering. How far away is she? It takes ...
Thursday, March 1, 2007 at 5:32pm by Courtney
science ( physics)
hello, i am having trouble with this problem. Calculate the average force of friction acting on a wood block as it is propelled along the floor by an elastic band ? my solution and my ideas: What does it mean by average froce of friction? I first weighed the peice of wood to ...
Wednesday, May 30, 2007 at 7:44pm by charlie
a object potential energy is described as 1/2kx^2. what does k and x represent? thanks. This is the PE in a stretched spring. k is the spring constant, x is the distance the spring is stretched (or compressed). Read up on Hookes' law.
Wednesday, June 13, 2007 at 6:22pm by john
I'm on a gay test..don't get me wrong physics is hard. Ha. A 10 kg sled is pulled horizontally by a force. If the coefficient of static friction is 0.3 , what force is needed to get the sled moving at a constant velocity?
Friday, October 29, 2010 at 12:40pm by Jacob
Why is time often referred to as a time interval in science? Time is often referred to as a time interval in science because that way its emphasized that time is a furation.
Saturday, November 6, 2010 at 5:47pm by Anonymous
A physics teacher shoots a .30 caliber rifle at a 0.47 kg block of wood. The rifle and wood are mounted on separate carts that sit atop an air track (like a linear air hockey table--ie. frictionless). The 5.7 kg rifle fires a 27 gram bullet at 227 m/s in the positive direction...
Thursday, January 6, 2011 at 12:09am by Joan
science- physics helppppp ! i badly need one T___T
how is physics related to food technology and everything related to foods ?
Tuesday, June 5, 2012 at 7:33am by angelique
Refer to the figure at http://img361.imageshack.us/img361/773/displacementduetorefracra3.gif Use the formula derived at http://www.kwantlen.bc.ca/science/physics/faculty/mcoombes/P1102_Solutions/Refraction/P1102_01_Solutions.htm but use the appropriate values of the incidence ...
Saturday, July 14, 2012 at 5:34pm by drwls
In physics, Numbers that you add or subtract must have the same units. You cannot subtract newtons from kilogram-newtons or kilograms
Thursday, January 24, 2013 at 8:52pm by drwls
Exact solutions for many-body problems are rarely encountered in physics. The following problem deals with a non-trivial motion of four charges. Due to the symmetry of the problem it is possible to determine the trajectories of the charges analytically. Four identical ...
Wednesday, July 10, 2013 at 10:57am by GT
Science, Physics, math, calculus
Pool players often pride themselves on their ability to impart a large speed on a pool ball. In the sport of billiards, event organizers often remove one of the rails on a pool table to allow players to measure the speed of their break shots (the opening shot of a game in ...
Sunday, November 24, 2013 at 11:29pm by James