Physics - February 2007

2007-02-04 23:43:22 · 11 answers · asked by jumanjisapikey 3

2007-02-04 23:27:10 · 3 answers · asked by Ronaldo D 2

If you have 2 space ships, each traveling at 1/2 the speed of light towards each other, wouldn't they be closing the gap at the speed of light.

2007-02-04 23:10:42 · 9 answers · asked by Yetti 2

I cant remember the name of this theoretic modle, I would just like to know the name of this type of machine that will produce infinite energy, or just keep putting out More energy than you put in. Its not just super energy efficient machines, but there is a name for it, Someone help, its driving me insane.

2007-02-04 23:07:53 · 2 answers · asked by this_one_guy_03 1

we all know that shadow of a thing grows bigger as it moves closer to the source of light.Then if the flying birds or aeroplanes should have a bigger shadow falling on earth right?can someone please explain?

2007-02-04 22:46:56 · 6 answers · asked by indeeca2001 1

a constant net force of 200N is exerted to accelerate a cart from rest to velocity of 40m/s in 10s. what is the mass of the car?

2007-02-04 22:02:12 · 2 answers · asked by antoinekingx 1

2007-02-04 21:52:09 · 7 answers · asked by bonjette 2

Any formulas for calculating the rate of heat loss; and any experience of observing thermographic images in a like case welcome.

Assume that in index finger at body temperature is used.

2007-02-04 21:47:21 · 2 answers · asked by Deckard 1

2007-02-04 21:34:20 · 3 answers · asked by naveed 1

Hey to all, i need help with the the following 3 questions please?

Quesion 4) What vector subtracted from 100km N gives 200km N60E?

Question 8)
a) i solved the answer is 25N

b) what is the direction of the nest force acting on the mass?

Question 11) A cyclist rides along a straight road for 2.7km in a diection N23E and then 4.3km along another straight road S46E. What is he resultant displacement?

Question 12) An airplane files 420km in a northerly direction and then 350km in direction 50(degrees) west of north. how far is the airplance from its starting position and what is its direction?

THANKS HEAPS FOR ALL THAT HELP...

2007-02-04 21:16:15 · 1 answers · asked by NFLS121a 1

c/5=f-32/9

2007-02-04 21:03:15 · 2 answers · asked by naveed 1

c/5=f-32/9

2007-02-04 21:02:07 · 1 answers · asked by naveed 1

c/5=f-32/9

2007-02-04 21:01:10 · 1 answers · asked by naveed 1

a .050kg tennis ball approaches a rocket at 25m/s. if it is in contact with the rocket strings for 0.005s then rebounds at 25m/s. what is the average contact force between the ball and rocket?

2007-02-04 20:55:10 · 1 answers · asked by antoinekingx 1

pls tell how can we obtain good diagrams related to rocket propellants

2007-02-04 20:28:24 · 3 answers · asked by IYER S 2

the period of a pendulum is determined at the equator and again at the North Pole. Will it be the same? Why or why not?

2007-02-04 20:19:39 · 8 answers · asked by somepeoplepleasehelp 2

2007-02-04 20:16:15 · 5 answers · asked by ABHINEET N 1

2007-02-04 20:15:01 · 1 answers · asked by Northwest Photonics Association 1

2007-02-04 20:12:50 · 5 answers · asked by Anonymous

The temperature of a mixture of ice water remains at 0 degrees C even thoygh heat is applied. Only when the ice melts does the temperature rise. This is because

a) the heat energy makes the water molecules go faster

b) the heat energy makes the water molecules go slower

c) the heat energy goes into breaking bonds among ice crystals

d) the melting ice is colder than 0 degrees C

e) thermometers dont work properly at this temperature

2007-02-04 20:01:07 · 2 answers · asked by Anonymous

They ask me: How long will it take LIGHT (or radio waves travelling at the speed of light) to get to Sirius. (Give your answer in years)

2007-02-04 19:52:32 · 3 answers · asked by Anonymous

how is it measured?
in amps, watts, volts, coulombs, watt-hours, moles, faradays, joules? i just don't get it. how are all of these different? why would you use one over the other?

2007-02-04 19:06:21 · 5 answers · asked by smokesha 3

an athlete completes 1 round of a circular track of diameter 200m in 40s.what will be the distance covered and the displacement at the end of 2minutes 20 secs?

2007-02-04 18:50:56 · 3 answers · asked by pooh 3

I just want to know what factors determine the loudness of the speaker in a radio circuit, how to compute and find out their values .Thanks

2007-02-04 18:44:37 · 5 answers · asked by sain 1

Tensile strength of ingots. A study was conducted to examine the relationship between the cost structure and mechanical properties of equiaxed gains in unidirectionally solidified ingots (metlurgical transactions , May 1986) Ingots compose of copper alloy poured into one of the three mold types (Columnr,mixed, or equiaxed)with either a transverse or a longitudinal orientation,From each ingot,five tensile specimens were obtained at varying distances(10,35,60,85 and 100 milimeters)from the ingot chill face and yield strength was determined..

a)How many strength measurement will be obtained if the experiment includes one ingotfor each mold type-oreintation combination?
b) Suppose three of the ingots will be selected for further testing at the 100 mm distance, How many samples of three ingots will can be selected from the total number of in the experiment?

2007-02-04 18:42:24 · 1 answers · asked by Bob 1

2007-02-04 18:14:12 · 1 answers · asked by brady_pitty_19 1

2007-02-04 17:37:39 · 6 answers · asked by anugraha k 1

(1+tanx)/(sinx + cosx) = secx

please help this is so hard

2007-02-04 17:20:13 · 3 answers · asked by ARB 2

the largest diamond ever found was 621 g. if the force of gravitaional attraction between the diamond and a person witha mass of 65.0 kg is 1.00 * 10^-12 N, what is the distance between them?

keep gettin the wrong answer, i get like .16 ???

2007-02-04 16:53:59 · 3 answers · asked by Anonymous

2007-02-04 16:50:33 · 8 answers · asked by Anonymous