Physics - January 2007

According to the climatic situation in moon i feel there is no more possibilty to land in moon now a days. But the world is accepting the moon landing. how.

2007-01-21 16:46:23 · 20 answers · asked by afroz 1

and if you could briefly, how did you come to that conclusion?

2007-01-21 16:39:47 · 6 answers · asked by dfgh d 1

is it like ultrasound? where you have low frequencies penetrate better than high frequencies?

2007-01-21 16:24:26 · 2 answers · asked by Anonymous

2007-01-21 16:18:28 · 4 answers · asked by cult_king_666 1

A car accelerates uniformly and reaches a speed V of 3.40 m/s in 8.00 seconds. Calculate the distance traveled by the car from a time of 0.30 to 7.00 seconds.

Ok, so I calculated the acceleration to be 0.425 m/s^2, but I am not sure which motion equation to use because I keep getting the wrong answer.

Thanks for any help.

2007-01-21 16:17:03 · 2 answers · asked by Defcon6 2

Visible light is only visible when it hits something. But are lasers visible as a beam through air?

2007-01-21 15:31:08 · 8 answers · asked by Anonymous

where are the incident and refracted rays located in relation to the normal??

2007-01-21 15:07:08 · 2 answers · asked by heyheyhey 2

2007-01-21 14:51:05 · 5 answers · asked by ? 1

Please this is really important this is due tmorrow and i can either pass or fail my classs help me pleaseee

2007-01-21 14:47:53 · 1 answers · asked by money pimp 1

2007-01-21 14:47:47 · 6 answers · asked by Anonymous

2007-01-21 14:44:30 · 5 answers · asked by Anonymous

2007-01-21 14:43:27 · 8 answers · asked by marilyn h 1

While watching the TV, 1.12 * 10^22 electrons flow through the TV. The video (without commercials) is 23 minutes. What is the current through the TV?

2007-01-21 14:27:04 · 1 answers · asked by Anonymous

What does actual mechanical advantage tell you about a machine's usefulness?

2007-01-21 14:26:07 · 3 answers · asked by shelbysurfer 1

Why do we no longer hear sonic booms? I recall growing up in Houston, Texas in the sixties and seventies and the number of frequent sonic booms that happened. Why do we no longer hear them? A change in aircraft design? Someone please enlighten me.

2007-01-21 14:22:56 · 3 answers · asked by sonicboom 2

Fill in the blank.

If the weight of the floating object increases, then the weight of the displaced water ________ ?

is the blank spot suppose to be " decreases"? is that correct? or is it " increases " ?

2007-01-21 14:21:49 · 15 answers · asked by Orange? 4

5. U r standing perfectly still & then u take a step forward. Before the step your momentum was 0, but aftereward u have some momentum. Is the conservation of momentum violated in this case? (what is the conservation of momentum?)

12. U r watching a movie about a superhero & notice that the superhero hovers in the air & throws a piano at some bad guys while remaining stationary in the air. What's wrong with this scenario? (I rlly don't know).

13. In golf, novice players are often advised to be sure to "follow through" w/ their swing. Why does this make the ball travel a longer distance if a shot is taken near the green, little follow-through is required. Y? (Again, I need help ppl).

15. A sharpshooter fires a rifle while standing w/ the butt of the gun against his shoulder. if the forward momentum of a bullet is the same as the backgward momentum of the gun, y isn't it as dangerous to be hit by the gun as by the bullet?

2007-01-21 14:17:27 · 5 answers · asked by Twilight Is Love 1

lol, it kinda slipped my mind to what density was.

2007-01-21 14:13:16 · 6 answers · asked by Hehe. ;]] 3

2007-01-21 14:09:38 · 5 answers · asked by sara 1

Why would one want to use a pulley that had a small mechanical advantage?

2007-01-21 14:06:42 · 6 answers · asked by shelbysurfer 1

This is one of my home work questions but I really don't get it..

Discuss the properties of mass that concernted Einstein and what theory resulted. How does this explain the discrepancy between clocks in New York and Denver?

2007-01-21 13:50:50 · 3 answers · asked by Anonymous

2007-01-21 13:48:57 · 9 answers · asked by Ajay C 2

2007-01-21 13:35:39 · 3 answers · asked by ░ 1

1. when the amplitude of a sound wave is increased, what happens to the loudness pf the sound? The picth?
2.If the frequency of the reflected radio waves increces, how is the rain moving relative to the rador station?
3. in a tornado, winds are roatating.How would the radio waves reflected by roatating winds be Doppler-shifted?
4.How does the wavelength of a sound affect the way it moves around corners?
5. How does the temperture of a material affect the speed of sound passing through it? explain why in terms of the particales within the material?

2007-01-21 13:32:30 · 1 answers · asked by Anonymous

An astronaut outside an orbiting space station throws his 800 g camera away in disgust when it jams. If he and his space suit together have a mass of 100 kg and the speed of the camera is 12 m/s, how far away from the space station will he be in one hour?

2007-01-21 13:27:28 · 6 answers · asked by jus_bein_me 1

2007-01-21 13:06:46 · 13 answers · asked by Sahin K 1

I know this had to do with inertia, but I need to explain what this is demonstrating and can't figure out how to word it.

2007-01-21 13:02:44 · 5 answers · asked by wencar29 1

a question from mt hw:

"the two-mile long linear accelerator at Stanford U in CA "appears" to be less than a meter long to the electrons that travel it. Explain."

could someone help me please?
thank u!

2007-01-21 13:02:12 · 2 answers · asked by Anonymous

2007-01-21 12:50:56 · 3 answers · asked by Raposo D 1

1 Have you noticed water collecting on the outside of a glass containing an ice-cold drink? Where did this water come from and why did it collect on the glass?
2 A glass of water is placed next to a puddle that contains the same amount of water. Explain why water in the glass evaporates more slowly than the water in the puddle?
3 Use the kinetic theory to explain why a gas completely fills its containor while a liqued or solid may not

2007-01-21 12:47:17 · 4 answers · asked by yakmicjan 3