Physics - November 2006

What is the max speed w/ which a 1050 kg car can round a turn of radius 77m on a flat road if the coefficient of static friction betweentires and road is .80? Is this result independent of the mass of the car? Please answer and show work. :-)

2006-11-16 06:35:36 · 2 answers · asked by JitterBug589 3

Please answer and show work...
A ball on the end of a string is revolved at a uniform rate in a vertical circle of radius 72.0 cm. If it's speed is 4.00 m/s, and its mass is .300 kg, calculatethe tension in the string when the ball is (a) at the topof its path, and (b) at the bottom of its path.

2006-11-16 06:33:34 · 1 answers · asked by JitterBug589 3

impulse momentum....how does one get a catchy title out of it?

2006-11-16 06:12:46 · 5 answers · asked by ED 2

2006-11-16 05:56:45 · 14 answers · asked by steven m 2

Hi,

I have a physics midterm today and this is one of the review problems:

A block of mass m starts from rest at height h. It slides down a frictionless incline, across a rough horizontal surface of length L, then up a frictionless incline. The coefficient of kinetic friction on the rough surface is Uk.

a) What is the block's speed at the bottom of the first incline?
b) How high does the block go on the second incline?

Give your answers in terms of m, h, L, Uk, and g.


Help would be greatly appreciated!


Thank you!

2006-11-16 05:50:34 · 5 answers · asked by Anonymous

2006-11-16 05:29:45 · 5 answers · asked by Azeem 2

It has to be a lab that my class can do in groups.

2006-11-16 05:16:38 · 2 answers · asked by Anonymous

So.. Why is it that when you go deep in the ocean, the pressure goes up and you go up a mountain and the pressure drops but once you're in outer space the pressure (I think) crushes you?

Maybe I don't know physics but I've seen plenty of cartoons.

2006-11-16 05:14:38 · 8 answers · asked by tichothewolf 2

2006-11-16 04:42:01 · 5 answers · asked by devonna o 1

If a person is on a moving train going 150 mph, then jumps out and falls about 60 ft. into water, how fast is that person moving when they break surface tension? This question is from the final action sequence in XXX 2: State of the Union where Ice Cube jumps out of the bullet train, and the above mentioned questioned was raised.

2006-11-16 04:40:51 · 3 answers · asked by initialgoose 2

2006-11-16 04:26:49 · 8 answers · asked by ? 3

Hello,

I have some questions:

1. Do you think the calculated moment of inertia is larger or smaller than the true moment of inertia? Explain.

for static moment of inertia I have:.0202kgm^2
for dynamic " ":.0195 kgm^2

In this case, it's smaller but I don't know why.

2. Is the percent difference in accord with your answer to #2? Give plausible explanations/causes to account for the difference. for the percent difference I got 3.6% which is small so it does agree with #2. I am not sure why there is a difference though.

3. The wheel could replace the pulley on newton's law's 2nd law. Try to rethink an answer to the question: "If the pully has a fairly large mass, how will the result of this experiment be affected? "

2006-11-16 04:25:04 · 2 answers · asked by MangaJunkie4Life^^ 3

There is a metal ball which is falling with the acceleration 10 and now tell what is its average speed?

2006-11-16 04:17:00 · 5 answers · asked by Zeeshan Anwer 1

2006-11-16 03:35:20 · 8 answers · asked by Jakki A 2

Two particles each with mass m = 0.85 kg, are fastened to each other, and to a rotation axis at O, by two thin rods, each with length d = 5.6 cm and mass M = 1.2 kg. The combination rotates around the rotation axis with angular speed = 0.30 rad/s. Measured about O, what are the combination's:
(A) rotational inertia
(B) kinetic energy

The answers are:
(A) 0.023 kg*m^2
(B) 11mJ

but I don't know how to get these answers. I really want to understand this problem, so please help me!

2006-11-16 03:13:57 · 2 answers · asked by afchica101 1

2006-11-16 03:10:14 · 4 answers · asked by vani h 1

2006-11-16 03:05:00 · 8 answers · asked by Parth 1

WE know the surface orbital velocity of a black hole is "C"
The quantum effect produces faster and slower photons.
The majority of photons are trapped in orbit. the faster ones spiral outward.
The slower photons could neither spiral outward or maintain orbit.
What the heck happens to them? Can we save the black hple?

2006-11-16 02:04:39 · 2 answers · asked by Billy Butthead 7

it must be attractive & simple & must not be of very low level

2006-11-16 01:46:54 · 5 answers · asked by deepika s 1

Straw sticking straight up...

Just noticed this, this morning and thought it was odd.

The pressure should equalize even if the opening of the straw is at the bottom of the cup...I thought

2006-11-16 01:39:55 · 6 answers · asked by Robert2309930201091209 2

2006-11-16 01:35:54 · 7 answers · asked by Anonymous

If Earth's polar ice caps fully melted and the water returned to the oceans, the oceans would be deeper by about 30 m. What effect would this have on Earth's rotation?

Make an estimate of the resulting change in the length of the day. (Concern has been expressed that warming the atmosphere resulting from industrial pollution could cause the ice caps to melt.)

Would you use any formulas to solve this? Can you show your work? I happen to know the answer is the days would be longer by about 0.8 s. Good Luck!

2006-11-16 01:34:55 · 3 answers · asked by Anonymous

2006-11-16 01:26:45 · 3 answers · asked by goring 6

what safety precautions are out there? Like the yellow barrels of water and all

2006-11-16 01:26:26 · 1 answers · asked by EstacioA 1

2006-11-16 01:26:05 · 6 answers · asked by Anonymous

Are his methods used today?

2006-11-16 01:19:43 · 1 answers · asked by goring 6

would it be inertial or gravitational?

2006-11-16 01:17:08 · 5 answers · asked by goring 6

take air resistance in consideration.

2006-11-16 01:17:02 · 4 answers · asked by Khaleck 1

The period of the earth around the sun is 1 year, and it is at a distance of 150 million kilometers from the sun. An asteroid in a circular orbit around the sun is at a distance of 632 million kilometers from the sun. What is the period, Ta, of the asteroid orbit in years.

2006-11-16 01:02:06 · 2 answers · asked by Dee 4

2006-11-16 00:53:43 · 3 answers · asked by goring 6