Physics - January 2007

Multiply 2.479 X10^2 m by 0.077X10^-1, taking into account significant figures.

Please explain your results. Thanks.

2007-01-22 15:56:48 · 1 answers · asked by Jessie L 2

2007-01-22 15:47:40 · 5 answers · asked by Jackie R 2

I noticed that only the furthest side view mirror has this statement on it. Does it have to do with the angle with which one views the reflected image?

2007-01-22 15:30:21 · 7 answers · asked by smawtadanyew 2

Some people say that it means someone is talking about you, but I would like the actual scientific explanation.

2007-01-22 15:20:59 · 4 answers · asked by mrr86 5

2007-01-22 15:19:42 · 2 answers · asked by JizZ E. Jizzy 2

Based on the law of relativity

2007-01-22 15:16:24 · 4 answers · asked by sreekumar v 1

In the bright sunlight they beam rainbow colors in all directions...Why so???...What do you think makes them so stunning to look at???

2007-01-22 15:09:26 · 4 answers · asked by Anonymous

the one tests the relationship btw the distance from a currnt carring wire and the strength of the magnetic firld around it. I tried to use the angle between the arrow of a compass pointing before being affected by the current carrying wire and after. Because the direction of the field arround the wire would be affected by the earth magnetic field so the field appears after the wire is nearby should be the vector of the original magnetic field and the earth magnetic field(?) I have a formula: B=Mo(I/2pr) and I use the earth magnetic field as 4800nT(?) since I live in Edmonton. But I am lost about how to use the angle, vector magnetiv field and earth magnetic field to caculate out the real magnetic field I am looking for...(this is the point of my question...). And after i figure out the real magnetic fields WTR the various redius around the wire I would do a strength of the magnetic field-reversed radius graph, hoping the slope would be close to MoI/2p. m I heading the right direction?

2007-01-22 15:08:33 · 1 answers · asked by k.i.1 1

A vertical distance of 2.4m separates the floors in a house. A student weighing 44 kg climbs the stairs to the second floor. Find the average power (in watts) necessay to accomplish this if the stairs are climbed in (a) 10 sec and (b) 2 sec.

2007-01-22 14:42:35 · 5 answers · asked by virginiawahoo13 1

2007-01-22 14:16:12 · 1 answers · asked by Anonymous

Michael is pushing his car of 1.5kg at .5m/s2(squared, the two is an exponent, the power of 2) , to a distance of 5 m. How much force is he putting? How much work? When solving this can you show me the steps of problem solving and then the answer?

2007-01-22 14:08:51 · 2 answers · asked by i am what i am 2

It seems to take an awefull lot of mass for such a soft pull....Thanks for your detailed answer...Tom Science 4

2007-01-22 14:05:48 · 5 answers · asked by Anonymous

You've just won the $1 million cash lottery, and you go to pick up the prize. What is the approximate weight of the cash if you request payment in (a) quarters or (b) dollar bills?

I simply don't understand this question, at all. Am I supposed to know the mass of the quarters or dollar bills????

2007-01-22 13:45:32 · 2 answers · asked by 123haha 1

Physics teacher asked us says it has to do with what we've been studying which is Specific Heat Capacity..

2007-01-22 13:40:07 · 4 answers · asked by Ducky 1

If you have 8 balls that have exactly the same physical appearance, but one of them is slightly heavier, given a balancing scale, how do you find out which ball is the heavier one ?

Is there a two step solution that solves all scenarios? Three step is simple but two, is it possible?

2007-01-22 13:22:19 · 8 answers · asked by fibon 1

A bowl of water to freeze in 22 degree weather?

2007-01-22 13:15:48 · 1 answers · asked by sick six 2

2007-01-22 12:56:54 · 3 answers · asked by ? 2

Pauli?

2007-01-22 12:54:14 · 4 answers · asked by yakart 1

Or would there be no difference?

2007-01-22 12:53:06 · 1 answers · asked by Tenacious 1

Experiment involved using ticker tape to determine how long it took for different weights to hit the ground. Using different weights yielded the same result. The acceleration due to gravity was about 7.67 m/s^2. However, it should be closer to 9.81 m/s^2.

What are possible sources of error in this experiment?

2007-01-22 12:52:59 · 5 answers · asked by Ronald S 1

2007-01-22 12:49:27 · 5 answers · asked by godezz 1

In my undergrad course, current in a semiconductor involves two types of carriers, the electron and empty energy level it leaves behind - aka the hole.

In metals we only consider electrons when solving for the current density.

Why? My professor tells me to just accept it.

2007-01-22 12:36:44 · 2 answers · asked by Matt 2

2007-01-22 12:32:49 · 2 answers · asked by Anonymous

I need to give thore his cd back.

2007-01-22 12:31:53 · 6 answers · asked by Take your medicine 1

if we know how far the planet is from the sun, can we calculate the distance it travels to complete an orbit by using the formula pi*r^2, when r is the distance between the planet and the sun? this is only for a planet that orbits the sun in a circle huh

2007-01-22 12:19:55 · 2 answers · asked by Anonymous

the blank of a sound wave is the distance between a compression or rarefaction and the next compression or rarefaction

2007-01-22 12:11:56 · 2 answers · asked by Anonymous

2007-01-22 12:08:25 · 4 answers · asked by Michael C 1

the ability of fish to hear low frequency sound waves may allow them to escape animals that use echolocation to find prey

2007-01-22 12:01:42 · 3 answers · asked by crayon43 1

2007-01-22 11:45:31 · 2 answers · asked by rahman 1

I need a few fun, everyday examples of Newton's 3rd Law of Motion!!!! :o)

2007-01-22 11:41:10 · 4 answers · asked by smoothieblender 2