Physics - January 2007

besides stars?

2007-01-21 03:41:08 · 8 answers · asked by twinkle sundae 3

If a car has a final velocity of 30 m/s after accelerating for 5.0 seconds at a rate of 5.0 m/s, what is the car's initial velocity?? how far does it travel during this time period??

in question # 1 my answer is 0 "initial velocity"

in question #2 my answer is 75 m

just answer yes or no...but if my answer is not correct..please tell me the correct answer..
:)

2007-01-21 03:01:20 · 5 answers · asked by Anonymous

Could someone please explain?

2007-01-21 03:01:02 · 1 answers · asked by Tabby 1

2007-01-21 02:53:59 · 3 answers · asked by Teneka D 1

ok help i'm stuck on my science!
why does a image break up when a pebble drops into a puddle???

2007-01-21 02:42:10 · 3 answers · asked by Anonymous

A player hits a baseball at some angle. The ball goes high up in space. The player runs and catches the ball before it hits the ground . Which of the two has greater displacement?

2007-01-21 02:41:47 · 5 answers · asked by Anonymous

when a particle moves with constant velocity its average velocity .its instantaneous velocity and speed are equal. Comment on this statement

2007-01-21 02:37:32 · 3 answers · asked by Anonymous

A ball is thrown vertically upwards with a speed of 20m/s. Draw a graph showing the velocity of the ball as a function of time as it goes up and then comes back.

2007-01-21 02:34:49 · 3 answers · asked by Anonymous

HOW HAS PHYSICS ORIGINATED

2007-01-21 01:26:55 · 7 answers · asked by CHAUVINIST 1

One might expect that the product of the mass m times the velocity V of some object would depend on both the external force F applied to the object and the time interval t during which this force is applied, i.e.
mV = F^a·T^b
where a and b are constants to be determined. Using dimensional analysis, show that the correct values of a and b are
1. a=1, b=1/2
2. a=1/2, b=1

I don't get what they're trying to make me find out

2007-01-21 01:13:22 · 5 answers · asked by sky l 1

(Transformation of Energy in a Telephone)

2007-01-21 01:07:02 · 2 answers · asked by cheese 2

c=0
the theory is that light does not move. but everything else does and at "light speed". the observed differences in objects moving through space are really just the difference in which they move through time.
this thinking helps me understand how light speed cannot be exceeded since you cannot go slower than to stop and to approach the speed of light is actually to slow down rather than to speed up.
it also accounts for time dialation. reasoning that time is a measuremnt of movement it stands to reason that time slows as you approach c until both stop.
am i just looking at what is already known from a different angle or is this new or am i just another crackpot?
it is easy to see in someone else but hard to see in ones self.
thanks.

2007-01-21 00:19:44 · 9 answers · asked by karl k 6

I need a reference, and I have only three choices:
- 0.25
- 0.45
- 0.65

2007-01-21 00:01:58 · 3 answers · asked by Planner 2

What does it is meant by that monoatomic gas have three degrees of freedom of transfer of heat(all three being translational).Explain about diatomic and triatomic gases also. Also please explain how atomicity is obtained from ratio of Cp/Cv.

2007-01-20 23:50:49 · 2 answers · asked by Tariq M 3

2007-01-20 23:35:19 · 4 answers · asked by max_total_t 1

Could you give some examples, and relate the virtual particles to the field or interaction they are involved with?

2007-01-20 22:57:43 · 3 answers · asked by Jess 2

What are the two reasons why a computer should be used rather than manual methods?

2007-01-20 22:21:30 · 4 answers · asked by ☆hello☆ 3

2007-01-20 21:38:03 · 1 answers · asked by kafka 1

2007-01-20 21:28:36 · 6 answers · asked by cookiemonster1065 2

i've built a concentration sensor for a school project. i even drew a calibration curve of the voltage (on the y axis) vs the concentration of the solution (on the x axis). therefore sensitivity will be measured in Volts mol^-1 dm^3.

i've got a positive correlation between the two. however there were two times that i took the readings. the first time i calculated the sensitivity, it came out to be 3 V mol^-1 dm^3. the second time i took another reading, i got a much steeper slope with sensitivity 20 V mol^-1 dm^3.
which is more sensitive? the one with the higher value of sensivity or the one with the lower level of sensitivity? could you explain how you got to the conclusion?

2007-01-20 21:09:29 · 2 answers · asked by amandac 3

2007-01-20 20:53:08 · 2 answers · asked by faro the architect 2

I never see deflated balloons around. After a big balloon release, ie sporting event, where do they all land?

2007-01-20 20:52:19 · 14 answers · asked by Grady 2

This might sound supremely ignorant but if light is a form of energy which carries packets of light-emitting particles, then why can't it be harnessed to carry other sub-atomic sized particles too?

2007-01-20 20:46:15 · 9 answers · asked by V . 1

2007-01-20 20:04:17 · 5 answers · asked by Desha 1

2007-01-20 19:10:12 · 1 answers · asked by madhavan 1

Calculate the mass of ethylene glycol (C2H6O2) that must be added to 1.00 kg of ethanol (C2H5OH) to reduce its vapor pressure by 11.2 torr at 35°C. The vapor pressure of pure ethanol at 35°C is 1.00 x10^2 torr.

2007-01-20 19:08:45 · 1 answers · asked by Rena-chan 1

2007-01-20 19:04:05 · 3 answers · asked by JT 1

.....(specifically on the lumbosacral disk), if the bag is lifted briskly than if lifted slowly?

2007-01-20 18:33:04 · 5 answers · asked by clars 1

2007-01-20 18:19:04 · 8 answers · asked by MC 2

2007-01-20 18:17:28 · 8 answers · asked by MC 2