English Deutsch Français Italiano Español Português 繁體中文 Bahasa Indonesia Tiếng Việt ภาษาไทย
All categories

Physics - September 2007

[Selected]: All categories Science & Mathematics Physics

A rhinoceros is at the origin of coordinates at t1=0. For the next 12 seonds, the rhino's average velocity has x component -3.6 m/s and y component 3.9 m/s. Assuming no acceleration, at time t2=12 seconds, what are the x and y coordinates of the rhino? How far is the rhino from the origin?

I did V = sq rt (-3.6^2 + 3.9^2) to get the resultant, then multiplied that by time to get displacement. Is that right?

And how can I find the coordinates? Thanks very much!!!!

2007-09-02 12:42:35 · 3 answers · asked by Anonymous

If you went back in the past to kill your grandfather, before he met your grandmother, had kids ect... would you suddenly disappear?
Would changing the past suddenly change the present/future?
I.E., The movie, Back to the future? What are your thoughts on this? let me know.

2007-09-02 12:39:45 · 7 answers · asked by swebber_77 1

1 Ignoring friction, what is the acceleration of the box? 2 What is the normal force exerted on the box by the ground?

2007-09-02 10:48:29 · 2 answers · asked by Pascal 4

The results of this experiment, and others like it suggested that light has "wavelike" tendencies.
I reference this experiment in a paper I just wrote.
Thanks

2007-09-02 10:03:34 · 3 answers · asked by Michael P 1

2007-09-02 07:20:13 · 7 answers · asked by erik 1

We recently blew up a small container, and a few feet away there was a small pink light just before the explosion. We videotaped it and found it lasted for less than 1/30th of a second, and now we can't figure out what it is.

2007-09-02 07:07:00 · 1 answers · asked by Anonymous

I watched snakes on a plane and they also said something about a gun shot blowing up the plane

2007-09-02 07:04:02 · 4 answers · asked by Da man 2

Vector A is 3 units in length and lies along the positive x-axis. Vector B is 6 units in length and points along a direction 120 degrees from the positive x-axis. What’s the direction of the resultant with respect to x-axis ? (cos 60 =0.5 and sine 60=0.87)

2007-09-02 06:08:22 · 2 answers · asked by Anonymous

2007-09-02 06:06:49 · 6 answers · asked by raaas 1

2007-09-02 04:00:42 · 7 answers · asked by T Renne 1

2007-09-02 03:19:41 · 1 answers · asked by animerockz04 1

1. A flat circular plate of copper has a radius of .383 m and a mass of 27.7 kg. What is the thickness of the plate? Answer in units of m.
(please show work so i can learn the steps. THANK YOU)

2.) Water flows into a swimming pool at the rate of 9.27 gal/min. If the pool dimensions are 33.4 ft wide, 43.1 ft long, and 15.1 ft deep, how long does it take to fill the pool? (1 gallon = 231 cubic inches). Answer in units of minutes.

2007-09-02 03:09:16 · 3 answers · asked by mimi j 1

2007-09-02 02:33:02 · 7 answers · asked by Emmi92 1

Light travels with a tremendous speed, the greatest speed there is. We cannot invent any rocket which moves faster than light, Why?

2007-09-02 02:25:22 · 5 answers · asked by busybee 2

2007-09-02 01:54:09 · 8 answers · asked by yatzky 2

anyone can proof this probem?

*** solid sphere
ICM=2/5 MR2 note:(2 superscript)

2007-09-02 01:42:21 · 1 answers · asked by Anonymous

9-65
A 1200-kg car is being unloaded by a winch. At the moment shown in figure 9-46, the gearbox shaft of the winch breaks, and the car falls from rest. During the car's fall, there is no slipping between the (massless) rope, the pulley, and the winch drum. The moment of inertia of the winch drum is 320 kg m^2 and that of the pulley is 4 kg m^2. The radius of the winch drum is 0.80 m and that of the pulley is 0.30 m. Find the speed of the car as it hits the water.

9-92
A uniform solid sphere of radius r starts from rest at a height h and rolls without slipping along the loop-the-loop track of radius R as shown in Figure 9-56. (a) What is the smallest value of h for which the sphere will not leave the track at the top of the loop? (b) What would h have to be if, instead of rolling, the ball slides without friction?

2007-09-02 01:41:29 · 1 answers · asked by la 1

2007-09-02 00:06:14 · 4 answers · asked by monicakryzelle_fortes 4

how does it Work??

2007-09-01 23:57:40 · 5 answers · asked by micah :P 2

2007-09-01 23:33:41 · 8 answers · asked by dark knight 1

The tendency of the universe to gradually drift toward total disorganization.

2007-09-01 23:06:49 · 2 answers · asked by galacticsleigh 4

A helicopter is flying vertically above a fixed point....i mean its fixed & it does not move.....but earth is moving.....so after some time(say 5-6hrs),why is it still above that point only?????

2007-09-01 22:52:39 · 5 answers · asked by gamer2kool 1

Thanks in advance for those who'll answer!

2007-09-01 22:00:06 · 1 answers · asked by anonymous 2

2007-09-01 21:53:39 · 11 answers · asked by Anonymous

2007-09-01 18:59:17 · 7 answers · asked by monicakryzelle_fortes 4

This is a physics related questioan. I could only find what happen to the light when it travels thru the eye. my questioan is how does the nerve impulse propagates to the brain in a physics way.I only could find the biology term of it. It's a presantation in my class and it 5% of my total course mark. Could anyone just leave some webpage or anything that icould use. I don't want my presantation to be to complicated a simple but good information would be nice. Thank you very much.

2007-09-01 18:44:11 · 5 answers · asked by Amaneeya 2

1) A police car leave sin pursuit of a hold up car 0.50 h after the latter has left the crime at 75 mi/h. How fast must the police go if it is to catch up with the hold up car in 1h?

2) A snake is slithering toward you at 1.5 m/s. If you start walking when it is 5m away, how fast must you go in order that the snake not overtakes you when you had gone 40 m?

3) A hare and a tortoise compete in a race over a course 1.0 km long. The tortoise crawls straight and steadily at its maximum speed of 0.2 m/s toward the finish line. The hare runs at its maximum speed of 8.0 m/s toward the goal for 0.8 km and then stops to tease the tortoise. How close to the goal can the hare let the tortoise approach before resuming the race, which the tortoise wins in a photo finish? Assume that, when moving, both animals move steadily at their respective maximum speeds.

Thanks to those who'll be helping me.. I really don't know how to solve these physics problems..

2007-09-01 18:17:17 · 2 answers · asked by Anonymous

fedest.com, questions and answers