Physics - January 2007

Take away the whole and some still remains.

2007-01-11 22:38:57 · 8 answers · asked by Myrtle 3

given that the radius of the erath's orbit is 151000000 km?

2007-01-11 22:32:29 · 2 answers · asked by Mae 1

2007-01-11 22:16:46 · 15 answers · asked by amit g 1

2007-01-11 22:14:07 · 11 answers · asked by jay_npcil 1

at the start of her trip on a pleasant afternoon at 22C, a driver's car tires have a pressure of 2.9x10^5 Pa. The pressure rises by 33% during her trip. Ignoring the expansion of the tires, find the temperature of the tires at the end of her trip

** can you please show it step by step?

2007-01-11 21:48:48 · 5 answers · asked by blah 3

The metre is defined as the distance travelled by light in 1/299792458 second. Why did'nt people choose some easier number such as 1/300000000 second? Why not 1 second?

2007-01-11 21:33:20 · 7 answers · asked by Anonymous

2007-01-11 20:51:52 · 8 answers · asked by kshitij k 1

A jar is filled with water and is kept on an electronic weighing machine. Now a object tied with string is slowly lowered in the jar till it is completly immersed in water. The object however is not touching any of the walls or floor of the jar and is supported by the string. will the weight shown by the balance increase & why?

2007-01-11 19:27:53 · 11 answers · asked by RichieRich 1

dark matter? darkness? i heard that light receding to darkness is at first faster thatn the speed of light but then it slows when something happens>>?

2007-01-11 19:01:52 · 10 answers · asked by yazinazi666 1

An electrical motor spins at 1575.0 rpm, its radius is 7.204 cm.

2007-01-11 18:45:45 · 2 answers · asked by Anonymous

A dart gun has a maximum velocity of 8.71m/s.

2007-01-11 18:41:11 · 4 answers · asked by Anonymous

A fisherman launches bait off a dock at a 25 degree angle.The bait reached a maximum hieght of 17m.

2007-01-11 18:38:50 · 3 answers · asked by Anonymous

A hobby rocket is launched and reaches 75.5m in hieght an lands
143m from the launch point.

2007-01-11 18:34:13 · 2 answers · asked by Anonymous

A rock is thrown 60 degrees of the ground with a initial velocity of 7.22m/s.

2007-01-11 16:46:40 · 2 answers · asked by RhondaJo 2

1) If an object is launched at the same velocity 2 times: one at 30 degrees and one at 33, which one woudl go further?

2) the maximum height of a fly ball is 20m. How much time does the fielder have run to the predicted position of the ball for the catch?

2007-01-11 15:57:39 · 3 answers · asked by billf39 2

Please explain step by step.

2007-01-11 15:31:55 · 2 answers · asked by Anonymous

what word is it?

2007-01-11 15:01:29 · 7 answers · asked by Anonymous

I wrote in this blog http://globalpioneering.com/wp02/ that Benjamin Franklin founded the science of electricity but in physics textbooks he is not mentioned at all. Instead physics textbooks mention Newton as the discoverer of law of electricity. For instance, Coulomb's law. Can anyone verify this?

When you look at physics textbooks is Benjamin Franklin mentioned as a great scientist who founded the science of electricity or is he not mentioned at all?

Thanks so much for your help.

2007-01-11 15:00:16 · 6 answers · asked by gravytee 1

Seriously, we had a beer in the fridge and they were on the brink of being frozen. By looking through the beer in the light I could tell there was no ice present. He knocked his beer against mine (side to side) and for several seconds nothing happened. After about 5 seconds the beer began overflowing. The beer slowly spewed out of the top with a 90% ice 10% liquid mixture. How is this possible. If the atoms became "excited" then the liquid should have risen in temperature, instead of freeze and spewing.

2007-01-11 14:57:06 · 5 answers · asked by Jozef 1

2007-01-11 14:42:54 · 3 answers · asked by courtney_bxny 1

In the supermarket you return a cart to the cart area. You stand still and pushed the cart towards the other carts. You've just learned that the cart pushes back on you too, according to Newton's third law.

a) Explain why the carts moves and you do not.
Hint: Consider the cart and yourself separately. Also, consider all the forces acting on you and on the cart.

b) Which object is in equilibrium, you or the cart?

2007-01-11 14:15:06 · 5 answers · asked by Not Here 3

wouldn't it make sense to also be able to travel through the fourth dimension of time? And, if we are moving through time, what set us in motion in the first place? Think about it...

2007-01-11 14:01:29 · 12 answers · asked by Siervocal 3

2007-01-11 14:01:15 · 10 answers · asked by A.R 2

ok i'm confused. if a person sleds down a hill and the sled's velocity is 7.0 m/s at the bottom of the hill, wouldn't that be final velocity?

how do you know when the final velocity is zero and when the initial velocity is zero???

2007-01-11 13:57:24 · 5 answers · asked by i like turtles 3

A bicycle wheel is resting against a small step whose height is h=0.120 m. The weight and radius of the wheel are W=25.0 N and r=0.340 m. A horizontal force F is applied to the axle of the wheel. As the magnitude of F increases, there comes a time when the wheel begins to leave the ground. What is the magnitude of the force when this happens?

2007-01-11 13:52:40 · 2 answers · asked by Someone 1

2007-01-11 13:52:25 · 5 answers · asked by disney 1

im confuse about 1 billion, some said 1 billion is 100 million and some said 1000 million. Can anyone answer my question?

2007-01-11 13:43:03 · 11 answers · asked by andre_zanoria 1

2007-01-11 13:41:03 · 1 answers · asked by Anonymous

how do the reflected waves produced when a wave passes into a less dense medium differ from reflected waves produced when a wave passes into a more dense medium?

2007-01-11 13:39:43 · 5 answers · asked by lindi 2

2007-01-11 13:37:23 · 2 answers · asked by green z 1