Physics - September 2006

I am working on a homework problem in my high school physics class, and I'm stuck on a simple problem. Hopefully someone can help. Here's the question.

Ernie and Burt take off from the same point in their individual cars traveling in the same direction along a straight highway. Ernie travels at 75 miles/hour and Burt travels at 60 miles/hour. How much sooner does Ernie arrive at a destination 10 miles away. How far must Ernie travel before he has a 15 minute lead on Burt?

Thank you for the help!

2006-09-15 07:28:22 · 8 answers · asked by Lisa O 1

2006-09-15 07:25:32 · 9 answers · asked by kristc6 1

The answer must be in m/s squared.

2006-09-15 07:22:32 · 7 answers · asked by turnerresident 1

List the names of those scientist whom you consider the greatest top 5 who lived[living] in the 20th and 21st century. With their discoveries mentioned in a few lines.

2006-09-15 06:59:37 · 4 answers · asked by Anonymous

AS per string-theory a proton contains 3 quarks right, so is there any estimate of how much of proton is empty and how much is occupied by quarks? some one told 1 part in 10^3 is occupied by quarks......how correct is this?

2006-09-15 05:58:17 · 7 answers · asked by Anonymous

2006-09-15 05:41:44 · 10 answers · asked by Twiggy 1

2006-09-15 05:38:01 · 14 answers · asked by raghuvasa 1

2006-09-15 05:32:41 · 28 answers · asked by ninapeppacat 1

2006-09-15 05:23:06 · 13 answers · asked by Anonymous

A bus travels 400 m bet 2 stops. it starts from rest and accelerates at 1.5m/ssquared until it reaches a velocity of 9 m/s. the bus continues at this velocity and then deccelrates at 2 m/ssquared until it comes to a half. Find the total time for the journey.

2006-09-15 05:19:49 · 5 answers · asked by anyONE 2

An orangutan throws a coconut vertically upward at the foot of a cliff 40 m high while his mate simultaneously drops another coconut from the top of the cliff. the 2 coconuts collide at an altitude of 20 m wat was the initial velocity of the coconut that was thrown upward.?

2006-09-15 05:16:15 · 4 answers · asked by anyONE 2

An apple is thrown vertically downwardfrom a cliff 48 m high and reaches the ground 2s later. what was the apples initial velocity???

2006-09-15 05:13:07 · 5 answers · asked by anyONE 2

my resident LPG meter gives comsumption in cu meter .We are charged on wieght basis. PLease leme know wat is the density of LPG so that i can convert volume to weight

2006-09-15 05:04:45 · 1 answers · asked by pups 3

2006-09-15 04:56:30 · 6 answers · asked by babygirl2857 2

info on rocks,types of rocks,rock which is naturally occuring substance.

2006-09-15 04:49:18 · 15 answers · asked by chirag_vora36 1

something like this http://eor.rulesthe.net/chainmail/pics/Pursesidesmall.jpg or this http://www.spiderchain.com/images/archive/misc/bag_dice_large.jpg

would aluminum, steel, iron, silver, nickel, copper, and/or a combination of these all work (or not, as the case may be)? do they have specific frequencies from which they'll shield, or are all proper faraday cages EMF free?

would it need to be entirely closed (net-like bag cinched, purse flap folded over into closed position), or would a five sided cube work (like a bottomless chicken wire cage i can slip over my computer monitor) ?

2006-09-15 04:15:30 · 3 answers · asked by altgrave 4

2006-09-15 03:57:24 · 14 answers · asked by alfromponty 1

the equation for natural frequency is f=(1/2pi)*sqrt(k/m) correct? Is that given for 1 inch of spring travel? Does that mean if I change the spring rate the frequency will not change because the spring will just travel a different distance? Is there an equation that includes distance traveled?

2006-09-15 03:45:55 · 2 answers · asked by tlow 1

2006-09-15 03:23:34 · 9 answers · asked by erdogancakir 1

the theory of everything in the universe

2006-09-15 03:21:10 · 7 answers · asked by alfromponty 1

2006-09-15 02:51:14 · 4 answers · asked by erdogancakir 1

2006-09-15 02:40:57 · 3 answers · asked by christopher s 1

2006-09-15 02:33:31 · 5 answers · asked by certomerto 1

Theres an advert on in the UK at the moment where a woman flies down and grabs the roof of a bus , her two feet in contact with the bus and pointing forward. She then 'pulls' the bus to a halt.
If she is applying a horizontal force backwards to overcome the the forward speed of the bus does not the Newtonian reactive force through the bus and directed forward cancel her effort leaving no net effect on the bus?
I can never work these things out but I suspect she's not flying at all and they may well have faked it!.

2006-09-15 01:51:49 · 3 answers · asked by Douglas M 2

Chicken or the Egg? -Answer is simply no plural can be chosen
Big bang-Universe is created
Egg hatching-life is created
Can the universe simply have been hatched\birthed?
Boggle my mind to whom has laid it?, to wat habitat to wich live
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2006-09-15 01:50:18 · 15 answers · asked by Anonymous

2006-09-15 01:47:45 · 4 answers · asked by Mohammad T 1

Is there any force which can neutralise or cancel out a electromagnetic force emitted by a source? For me it seems impossible becouse EM waves seems to be overlapping each other rather than having neutralization effect. But still there is a doubt if something with greater intensity, force and interception would tend to act upon the EM waves and force to change its character and behaviour.

2006-09-15 01:24:18 · 4 answers · asked by orsel 2

if a bottle has a hole in it and it is filled to the top, how come no water falls out

2006-09-15 00:22:18 · 12 answers · asked by Anonymous

2006-09-15 00:15:46 · 7 answers · asked by sibmode 1

How can I use my solar cells(small) in an investigatory project?

2006-09-14 23:44:26 · 6 answers · asked by garfyldrox 4