Physics - November 2006

2006-11-04 07:47:24 · 9 answers · asked by daniel T 3

Therefore, it came about somehow. If it isn't possible for something mechanisitic to try things randomly in in different sequences, then how could the universe come about in that way? All things that have a beginning have a cause, therefore all things that have existed forever need no cause. Therefore isn't it possible that Agent X (God/ or whatever you want to call it) is a valid explanation of how the universe came about?

2006-11-04 07:31:27 · 12 answers · asked by Justin 1

You weigh maybe 50 to 70 lbs and are about 4 feet tall: a kid. How far into the lake will you sink. Your a good swimmer, conscience, no wind, bright sunny day.

2006-11-04 07:16:21 · 6 answers · asked by harrypotterisgreat 2

Please label them m_p and m_e for the masses.

2006-11-04 07:08:39 · 4 answers · asked by racm_86 3

Why wouldn't something be crushed under a pressure of the atmosphere?

2006-11-04 06:59:18 · 4 answers · asked by Trevor M 1

2006-11-04 06:52:14 · 18 answers · asked by andy c 1

2006-11-04 06:51:50 · 6 answers · asked by Anonymous

http://www.missioncollege.org/depts/physics/P4poe/P4D/Schrodinger.htm

2006-11-04 06:47:46 · 5 answers · asked by Anonymous

Having displacemente, initial velocity and final velocity.

2006-11-04 06:42:33 · 6 answers · asked by racm_86 3

Two people start at the same place and walk around a circular lake in opposite directions. One has an angular speed of 1.5 10-3 rad/s, while the other has an angular speed of 3.2 10-3 rad/s. How long will it be before they meet?

This is ticking me off. I cannot figure out how to work this problem.

2006-11-04 06:33:50 · 3 answers · asked by Confused 1

A ball of mass "m" moving with velocity "v-initial" strikes a vertical wall. The angle between the ball's initial velocity vector and the wall is "theta-initial", which depicts the situation as seen from above. The duration of the collision between the ball and the wall is "delta-t", and this collision is completely elastic. Friction is negligible, so the ball does not start spinning. In this idealized collision, the force exerted on the ball by the wall is parallel to the x axis.

What is the final angle "theta-final" that the ball's velocity vector makes with the negative y axis? Express your answer in terms of quantities given in the problem introduction.

2006-11-04 06:29:10 · 5 answers · asked by Anonymous

Olaf is standing on a sheet of ice that covers the football stadium parking lot in Buffalo, New York; there is negligible friction between his feet and the ice. A friend throws Olaf a ball of mass 0.400 kg that is traveling horizontally at 11.7 m/s. Olaf's mass is 68.4 kg.

1. If Olaf catches the ball, with what speed "v" do Olaf and the ball move afterward? Express your answer numerically in centimeters per second.

2. If the ball hits Olaf and bounces off his chest horizontally at 8.00 m/s in the opposite direction, what is his speed "v" after the collision? Express your answer numerically in centimeters per second.

2006-11-04 06:26:26 · 6 answers · asked by Anonymous

I need conclusion, hypothesis, purpose, variables and procedures

2006-11-04 06:14:21 · 3 answers · asked by No Name 3

2006-11-04 05:54:32 · 2 answers · asked by naurinbutt 1

A 3.9 kg bucket of water is raised from a well by a rope. If the upward acceleration of the bucket is 2.8 m/s2, find the force exerted by the rope on the bucket.

2006-11-04 05:52:08 · 8 answers · asked by Tennis2127 2

2006-11-04 05:45:05 · 4 answers · asked by otoniel s 1

A hockey puck is hit on a frozen lake and starts moving with a speed of 11.2 m/s. Five seconds later, its speed is 5.50 m/s.
What is the average value of the coefficient of kinetic friction between puck and ice?

2006-11-04 05:39:54 · 2 answers · asked by Tennis2127 2

You are part of a search-and-rescue mission that has been called out to look for a lost explorer. You've found the missing explorer, but you're separated from him by a 200 m high cliff and a 30 m wide raging river. To save his life, you need to get a 4.4 kg package of emergency supplies across the river. Unfortunately, you can't throw the package hard enough to make it across. Fortunately, you happen to have a 1.8 kg rocket intended for launching flares. Improvising quickly, you attach a sharpened stick to the front of the rocket, so that is will impale itself into the package of supplies, then fire the rocket at ground level toward the supplies. What minimum speed must the rocket have just before impact in order to save the explorer's life?


I know the rocket needs to travel 202.237 m (the hypotenuse of the triangle). So d=202.237. I am lost however, where to go from there.

Any ideas?


Thanks

2006-11-04 05:36:59 · 3 answers · asked by Anonymous

A 4.3 g bullet leaves the muzzle of a rifle with a speed of 304 m/s. What force (assumed constant) is exerted on the bullet while it is traveling down the 0.86 m long barrel of the rifle?

2006-11-04 04:59:31 · 3 answers · asked by Tennis2127 2

a sphere performs pure rolling upon an inclined plane with inclination "theeta " with the horizontal . what is the direction of frictional force when it performs pure rolliing up the plane and then comes down the plane performing pure rolling this time too ???!!!

2006-11-04 04:19:23 · 3 answers · asked by sham 1

2006-11-04 04:03:18 · 2 answers · asked by coolcat 3

What defines smell, color in elements? I'm pretty sure the arrangement of the electrons define force of attraction, but what defienes smell and color?

2006-11-04 03:55:30 · 2 answers · asked by Neo 1

how do you find an object's initial velocity if only an initial high, the range and the above horizonal angle are given?
For example, if an object is fired at 10m above the ground with the angle of 40 degrees obove the horizonal and lands 15m away? what is its initial velocity?

2006-11-04 03:38:28 · 3 answers · asked by Ha!! 2

2006-11-04 03:31:45 · 5 answers · asked by alicianose 1

if the world is turning at 900 miles an hour.and we live in say sussex and we want to go to scotland...can we get into a helicopter which goes straight up out of the earths atmosphere....waits an hour and comes straight down and lands in scotland...............

2006-11-04 03:24:40 · 8 answers · asked by Anonymous

numerical solved based upon thenvin theorem

2006-11-04 03:20:18 · 1 answers · asked by Anonymous

I need to find information on the Electrmagnetic Spectrum BUT
I need it to about GCSE level I don't want the stuff from Wikipedia which is A-level and complex and moreover hard to use.

Please find me a website with info on the Electromagnetic Spectrum at GCSE level , no higher

2006-11-04 03:09:59 · 4 answers · asked by revolutionman1379 3

high powered lasers to destroy enemy misslies vs.the new technological 2 tiny light bulb that contains sulfur. the sulfur gives off an intense white light when exposed to electromagnetic wave.
Brighter,Whiter Lights article by David H. Freedman; and the Light Brigade article by Seth Schulman are both in technology review cambridge.

2006-11-04 02:27:17 · 1 answers · asked by Anonymous

(a) Kilo-watt hour
(b) Volt* volt/sec*ohm
(c) Pascal*foot*foot
(d) (Coulomb*coulomb)*farad

2006-11-04 02:24:43 · 5 answers · asked by muteeu b 1

2006-11-04 02:00:26 · 2 answers · asked by goring 6