Physics - October 2006

2006-10-01 13:22:40 · 10 answers · asked by Tiffany W 1

2006-10-01 12:33:32 · 1 answers · asked by meleena t 1

A spy satellite is in circular orbit around Earth. It makes one revolution in 6.03 hours. (Radius of the Earth=6.371 106 m)

(a) How high above Earth's surface is the satellite?

(b) What is the satellite's acceleration?


Without the correct asnwer to part A, i cannot get part b done.

The equation we were given is

r (height) = (G Me / w^2) ^1/3

i guess the question i have is, how to find w.
i took the gravitational constant of the earth, the mass of the earth, but the w (angular acceleration?) i cannot figure out.

thanks for the help.

2006-10-01 12:27:07 · 2 answers · asked by robtrink 1

The airplane is traveling 900km/h in a direction 38.5 degree west of north.
The answer is north is 704 km/h and west is 560 km/h.
Please can u show me how to solve for it

2006-10-01 12:22:17 · 2 answers · asked by TehEagle 1

Can someone plz help me with this. Im not sure if you supposta set up 2 equations or what to do.

A ball is thrown up at an initial speed of 25 m/s at the same time a ball is dropped from rest at height of 15 m. How long does it take for the balls to be at the same height?

2006-10-01 12:19:45 · 3 answers · asked by MellyMel 4

Can you please answer the following question in terms of changes in energy and work?

A 500g block is shot up the incline with angle 25 degrees at an initial speed of 200 cm/s. How far up the incline will it go if the coefficient of friction between it and the incline is 0.15?

I think my book might have made a mistake..

2006-10-01 12:07:04 · 1 answers · asked by Anonymous

the answer needs to be in hrs.

the solution i tried was.

G (Me)/ r^3 = w^2

then f = w/2(pi)

T= 1/f


this is how the instructor showed us and it isnt working.

2006-10-01 11:47:30 · 3 answers · asked by robtrink 1

2006-10-01 11:05:48 · 2 answers · asked by rachidik2 1

http://img.photobucket.com/albums/v638/ravenatic20/cablecars.jpg
Like my MS Paint skills? haha
The image shows a section of an alpine cable-car system. The maximum permissible mass of each car with occupants is 2800 kg. The cars, riding on a support cable, are pulled by a second cable attached to each pylon (support tower); assume the cables are straight. What is the difference in tension between adjacent sections of pull cable if the cars are at the maximum permissible mass and are being accelerated up the 35 degree incline at 0.81 m/s^2 ? Explain.

2006-10-01 10:51:18 · 1 answers · asked by Anonymous

what is the equation of power and energy?(relation) What is the equation of work and energy

2006-10-01 10:26:36 · 12 answers · asked by piti 2

A bobcat weighing 72 N jumps out of a tree.

What is the drag force on the bobcat when it falls at its terminal velocity?

What is the drag force on the when it falls at 75% of its terminal velocity?

What is the acceleration of the bobcat when it falls at its terminal velocity?

What is the acceleration when it falls at 75% of its terminal velocity?

2006-10-01 10:23:25 · 2 answers · asked by Trevor M 1

The terminal speed of a golf ball is 40 m/s.

By neglecting air resitance, estimate how long it takes for a golf ball falling from rest to reach half of this speed?

estimate how far the ball falls during this time?

2006-10-01 10:18:17 · 2 answers · asked by Trevor M 1

You are standing on a bathroom scale inside an elevator. Your weight is 140 lbs, but the reading of the scale is 120 lbs.

what is the magnitude and direction of the acceleration of the elevator?

Can you tell whether the elevator is speeding up or slowing down?

2006-10-01 10:15:48 · 2 answers · asked by Trevor M 1

Ok, I know these two are probably easy questions but something is throwing me off so please help. I'm not here so people can do my homework but I tried these two questions for too long and I'm getting a headache, I'm just not getting the right answer. Please help me in anyway; any help is GREATLY appreciated:

1. A ball is dropped from a cliff that is 150 metres above the ground. Two seconds later another ball is thrown downwards. Determine the velocity of the second ball if they both hit the ground at the same time.

2. A ball is thrown upwards with a velocity of 24.5 metres/second from the edge of a cliff that is 200 metres above the ground. Determine how much time can pass before another ball is dropped from the cliff so that each ball hits the ground at the same.

2006-10-01 09:59:42 · 4 answers · asked by A 2

For those who have never heard about it, it suggests that all things -including energy and matter- are made up of extremely small vibrating particles of energy. They say an atom compared to one of these strings would be like comparing the whole solar system to a tree on Earth.

2006-10-01 09:46:51 · 6 answers · asked by Anonymous

2006-10-01 09:12:52 · 9 answers · asked by Anonymous

Speaking two-dimentionally as a visual, if Earth spun clockwise and a plane flew counterclockwise, would the plane get there quicker? Or do Physics' laws of relativity not affect it at all?

2006-10-01 09:04:14 · 5 answers · asked by rumilb 4

Please help I am so confused and I have a whole test on this.

2006-10-01 08:33:20 · 10 answers · asked by iluvu 1

2006-10-01 08:25:45 · 1 answers · asked by goring 6

a ball shaped macromolecule of radius 100 nanometers and mass 3.2*10^-20 grams is suspended in still water.

2006-10-01 08:15:44 · 2 answers · asked by marjan f 1

would electromagnetic waves exist if changing magnetic fields could produce electric fields but changing electric fields could not in turn produce magnetic fields?

2006-10-01 08:01:30 · 10 answers · asked by Anonymous

2006-10-01 07:55:47 · 9 answers · asked by Anonymous

2006-10-01 07:51:58 · 8 answers · asked by Melissa 2

in traveling on a bus on a bumpy road, in a shio in a choppy sea, or in an airplaine in turulent air?

2006-10-01 07:50:41 · 7 answers · asked by Melissa 2

2006-10-01 07:48:41 · 4 answers · asked by jacky b 1

How does the current in the secondary of a transformer compare with the current in the primary when the secondary voltage is twice the primary voltage?

2006-10-01 07:45:29 · 4 answers · asked by Anonymous

2006-10-01 07:43:15 · 6 answers · asked by Anonymous

My mom says its couse the watter is blue. But isent watter clear? IT only reflects collor? i dunno thats why i asked lol.

2006-10-01 07:38:51 · 9 answers · asked by gotslayer 2

2006-10-01 07:32:02 · 5 answers · asked by Anonymous

2006-10-01 07:18:34 · 15 answers · asked by I Know Nuttin 5