Physics - December 2006

2006-12-14 18:35:06 · 9 answers · asked by Anonymous

2006-12-14 18:07:14 · 14 answers · asked by jenny 4

A car shoots up a ramp at 179m/s. The ramp is 400m long and is angled at 45 degrees. The coefficient of friction between the car and the ramp is 0.5. A) How fast is the car moving at the end of the ramp? B) How much time does it take to travel the length of the ramp? C) Imagine that the car starts up the ramp at a speed less than 179m/s. What is the minimum speed the car could have and still exit the ramp?

Thank you soooo much for helping me :-)!! I really appreciate it.

2006-12-14 17:56:44 · 5 answers · asked by Make a wish 1

2006-12-14 17:39:52 · 7 answers · asked by Mary Jane 2

for example how long in earth hours would it take for someone traveling 99% the speed of light to have an hour go bye

2006-12-14 17:34:15 · 8 answers · asked by Anonymous

2006-12-14 17:25:24 · 1 answers · asked by Mary Jane 2

A 33 g lead bullet initially at 20°C comes to rest in the block of a ballistic pendulum. Assume that half the initial kinetic energy of the bullet is converted into thermal energy within the bullet. If the speed of the bullet was 410 m/s, what is the temperature of the bullet immediately after coming to rest in the block?

The answer is 621.32 K or 350 degree C Please explain how to solve

2006-12-14 17:03:33 · 3 answers · asked by free f 1

Also, how do I solve for thermal energy by knowing the energy input, the heating up and vaporization of a known
amount of water. Is there a specific equation? I can't seem to find one, so any help will by very appreciated!

2006-12-14 16:53:59 · 1 answers · asked by Stephanie C 1

PKABABA is a cheater and should be treated like that.

It is true this person is disgusting and should be ejected from yahoo answers. such an idiot. go away cheater.

this was copied from another answer and it is true indeed

do you know that pkababa has 40 accounts ?, he is a cheater, shame on him. get the question to the last minute and try to win with his illegal accounts.
follow the link an you will see
http://answers.yahoo.com/question/index

2006-12-14 16:53:10 · 2 answers · asked by Francis D 1

The answer is the letter or letters indicating EACH choice that forms a correct statement.

A car is parked on a hill
(a) the weight of the car acts vertically downward
(b) a component of the weight acts perpendicular to the surface of the hill
(c) a component of the weight acts parallel to the surface of the hill
(d) both the perpendicular and parallel components act to move the car down the hill

2006-12-14 16:07:08 · 3 answers · asked by Fatima 1

2006-12-14 16:05:07 · 4 answers · asked by Mr. Bodhisattva 6

With no speed listed, is it possible? If so, what would 200 N be converted to KG?

2006-12-14 15:48:59 · 12 answers · asked by Zach S 5

Since there appears to be evidence of multiple "black holes, isn't it possible that we live in a dynamic universe with both expansion and contraction. Perhaps more than one 'bang.' After all, might something like a black hole be necessary to create that ultracompact unity that then expanded into our "universe?"

2006-12-14 15:36:37 · 10 answers · asked by Anonymous

2006-12-14 15:34:28 · 6 answers · asked by Anonymous

Since there appears to be evidence of multiple "black holes, isn't it possible that we live in a dynamic universe with both expansion and contraction. Perhaps more than one 'bang.' After all, might something like a black hole be necessary to create that ultracompact unity that then expanded into our "universe?"

2006-12-14 15:30:32 · 3 answers · asked by Anonymous

Physicists divide the universe into micro and macro, gravity, magnetism, strong force, weak force. Isn't this division artificial? Imagine a sentient being smaller than a quark or larger than a galaxy. Would this creature categorize these forces in the same way?

2006-12-14 15:23:29 · 4 answers · asked by Anonymous

i need the answer like yesterday!! please help me out with the answer to this question

2006-12-14 15:06:02 · 6 answers · asked by KIMMY 2

If so, why is this?

2006-12-14 14:11:21 · 14 answers · asked by Zefram 2

2006-12-14 13:59:53 · 2 answers · asked by nemosax 1

newtons first law states that moving objects will continue moving at the same speed and same direction until an outside force is applied to the object. it also states that that things not moving will remain at a standstill until an outside force moves them.

question nuber 1; if this law is true, then why do objects slow down and stop on earth?

q # 2; what force makes of move foward when a car stops suddenly?

2006-12-14 13:34:23 · 20 answers · asked by Anonymous

Explain whether or not the answer is zero by using the equation a = F/m as a guide to your thinking.


2)A rocket fired from its launching pad not only picks up speed, but its acceleration also increases significantly as firing continues. Why is this so? (Hint: About 90% of the mass of a newly launched rocket is fuel.)

2006-12-14 13:22:25 · 5 answers · asked by Anonymous

2006-12-14 13:16:47 · 13 answers · asked by cuteness757 1

2006-12-14 13:09:28 · 9 answers · asked by resheda a 1

2006-12-14 12:52:10 · 3 answers · asked by Jujeaux 6

2006-12-14 12:48:47 · 3 answers · asked by Minty 1

Using mathematical calculations, explain why the speed of light is the absolute speeed limit in the universe. Thanks

2006-12-14 12:45:03 · 6 answers · asked by Anonymous

I know acceleration can be negative (braking).

2006-12-14 12:33:31 · 5 answers · asked by ZZ 4

My is related nto the temperature part of physics.

2006-12-14 12:32:50 · 3 answers · asked by SHAKIL A 1

one that has new technology

2006-12-14 12:20:28 · 7 answers · asked by Alex D 1

I am taking physics right now and I know the formula to momentum but I am still so confused!

2006-12-14 12:17:28 · 6 answers · asked by Anonymous