Physics - January 2007

2007-01-20 06:13:41 · 4 answers · asked by inquisitive 1

okay here was my last question...If you helped me with the last question, just read the bottom, as I have a question concerning it.

Trigonometry for Physics help (cos, sin, tan)?

okay, we are doing some problems for physics..and im kind of lost...I need help because I have never taken a trig class in my life and this physics book I have doesnt help that much..heres the question.

1. A man walks 5 mi east, then 6 mi North and then 3 mi further East. Make a scale diagram of the man's path on graph paper.

I did this and got 14 mi.

part b) Calculate the straight-line distance from where the man started to where the man ends up. (Is this the same, grater than or less than your answer to part a.

I got 10 mi as my answer which is less than.

Now heres my trouble.

c) At his final position the man turns and points toward his starting point. What direction is he pointing? (Be clear and exact)

Im going to add the rest after I post this because im running out of characters

2007-01-20 06:01:46 · 2 answers · asked by axcryingxshame 1

okay, we are doing some problems for physics..and im kind of lost...I need help because I have never taken a trig class in my life and this physics book I have doesnt help that much..heres the question.

1. A man walks 5 mi east, then 6 mi North and then 3 mi further East. Make a scale diagram of the man's path on graph paper.

I did this and got 14 mi.

part b) Calculate the straight-line distance from where the man started to where the man ends up. (Is this the same, grater than or less than your answer to part a.

I got 10 mi as my answer which is less than.

Now heres my trouble.

c) At his final position the man turns and points toward his starting point. What direction is he pointing? (Be clear and exact)

Now of course he is pointing southwest, but he wants the degrees west of south. And I have no idea how to get this, someone told me to use tangent, but im completely lost how tangent can get this for me...can someone help me out?

2007-01-20 05:16:22 · 7 answers · asked by axcryingxshame 1

2007-01-20 05:15:37 · 6 answers · asked by quantum 1

2007-01-20 04:42:55 · 12 answers · asked by Anonymous

the speed of a train is reduced uniformly from 10 m/s to 5 m/s while covering a distance of 150 m. what is its acceleration?

i need an explanation and a formula..
thanks!!

2007-01-20 04:42:42 · 6 answers · asked by Anonymous

Why do mirrors switch left-right and not top-bottom? Why do ambulances write "Ambulance" backwards rather than upside-down?

2007-01-20 04:19:44 · 5 answers · asked by coza b 2

2007-01-20 03:57:39 · 3 answers · asked by Anonymous

2007-01-20 03:31:29 · 8 answers · asked by monetspicasso 3

As a free falling object speeds up, what is happening to its acceleration due to gravity- does it increase, decrease or stay the same? Why?

2007-01-20 03:25:21 · 7 answers · asked by Taylor S 2

2007-01-20 03:23:19 · 3 answers · asked by brittany c 1

My guess is that is has something to do with warmer air by the end of the day and cooler air in the morning thus creating different densities and leves of atmospheric dust which refracts light. What's the real answer?

2007-01-20 03:20:31 · 1 answers · asked by Anonymous

2007-01-20 03:19:24 · 13 answers · asked by arya 1

What radioactive element is used in treating cncer?
What do you call the force that holds neutron and protons together in a nucleus?

2007-01-20 01:44:52 · 7 answers · asked by venuzzzzzz 1

Any idea of how to conclude an assignment on water rockets please? i would really appreciate it

2007-01-20 01:43:16 · 4 answers · asked by Anonymous

Is it linear? How do you understand the concept of time?
This is something that really puzzles me.

2007-01-20 00:56:29 · 28 answers · asked by Stef 4

suppose superman is flying at the speed of light having a mirror in his hands.Will he be able to see his image on the mirror?

2007-01-20 00:27:40 · 18 answers · asked by rajesh bhowmick 2

In Physics, at least at high school level, we have a reference table with all the basic equations on it however in some problems, you need to derive from the basic formulas to get an answer. Those are the questions I usually have trouble with.


Can anyone explain to me in steps the types of derivatives, how tos, examples and etc. on basic derivation.

2007-01-20 00:22:47 · 5 answers · asked by Kala J 3

If you go faster than the speed of light, you get to go back in time and change stuff. When you go go faster than the speed of sound things go BOOM. Anything good happen when you go faster than the speed of smell?

2007-01-19 23:57:22 · 7 answers · asked by Anonymous

For instance: a speed of 40m/s that goes down to 10m/s in 20 seconds?

2007-01-19 23:48:16 · 5 answers · asked by ☼lola☼ 4

Does this contradict Coloumb's law on electrostatics?

2007-01-19 23:47:32 · 5 answers · asked by kafka 1

Can energy in any form be sent back to time & again converted to mass?

2007-01-19 21:54:46 · 7 answers · asked by rajesh bhowmick 2

2007-01-19 21:49:06 · 7 answers · asked by zigococoooo 1

serious answers please, is there an energy rotating inside a permenant magnet when the magnet is open or in perfect keep, if so how does this energy relate, no heat is appears to be emmitted

2007-01-19 21:42:46 · 2 answers · asked by Anonymous

There are always lots of warnings on electronics when large capacitors are used (televisions, car audio etc). I have worked with capacitors a little bit and have seen that they can in fact deliver a large shock. However, whenever a capacitor is used, it is only capable of charging up to the voltage of it's power source (12V car battery, voltage from power supply in TV), correct? If so, what makes the capacitor so dangerous to work with?

2007-01-19 20:37:10 · 10 answers · asked by fast_lada 2

A current-carrying conductor placed in a magnetic field will produce a force in a direction perpendicular to the direction of the current and the field based on flux density x current ampere x length of conductor (in Newton).

My question is...

Doesn't that mean volt is not considered, which means we can use a transformer to decrease the voltage to increase the current (retain the watt) and thus produce more force, which also means we can feed back the increased force as input and produce perpetual motion? Please explain.

2007-01-19 19:40:43 · 3 answers · asked by Anonymous

and simple water freezes later

2007-01-19 19:33:58 · 3 answers · asked by akshay_snakes 1

The length of a simple pendulum is 0.66m, the pendulum bob has a mass of 310 grams, and it is released at an angle of 12 degree to the vertical.

1. What is the pendulum bob's speed when it passes through the lowest point of the swing?

2. What is the total energy stored in this oscillation, assuming no losses?

Please show me how to do these problems step by step. Thank you very much. =)

2007-01-19 19:31:20 · 3 answers · asked by Endless Moment 1

i mean, the name of the force. help me..!!

thanks gorgeous! love yah!

2007-01-19 19:29:33 · 5 answers · asked by Anonymous

May I have the answer by tommorow please

2007-01-19 19:27:17 · 4 answers · asked by J 1