Physics - February 2007

2007-02-26 10:11:03 · 3 answers · asked by Anonymous

A 60 kg stuntperson runs off a cliff at 5.2 m/s and lands safely in the river 12.4 m below. What was the splashdown speed?

_____ m/s

2007-02-26 09:54:07 · 1 answers · asked by Khoi 1

You operate a truck-mounded crane. The boom on the crane can be adjusted for both height and length. While lifting a heavy load, you feel the truck start to tip.

What should you do?

A) shorten the beam.

B) lenghthen the beam

C) lift more quickly

D) lift more slowly

E) raise the beam higher

2007-02-26 09:49:03 · 2 answers · asked by max 1

Hay! Once you Kangaroo Jockeys get it put together, can you possibly send me the sounds emanating from the Southern Cross! (That new fangled light to sound contraption!) Cause I can see the Southern Cross from Canada.


P.S. Rick T, Add a good telescope to the equation!

Thanx for Asking!
Love Bruce Toronto Canada

2007-02-26 09:32:24 · 2 answers · asked by Anonymous

2007-02-26 09:30:56 · 13 answers · asked by plasticbag 2

Does the snowflake come out of the cloud like that, with all those patterns? Or does it come out like a regular rain drop, but then it freezes, and all those little patterns appear? But if it's like that then why doesn't snow just look like a frozen rain drop?

2007-02-26 09:21:23 · 1 answers · asked by Leo 3

On the moon, you weigh 1/6th of what you weigh on earth. If that's true, why can't you jump 6 times as high? I've been so some sites that say you can't but my physics teacher told me that you can't and challeged the class to find out why. Thanks for the help (if I get any)

2007-02-26 09:15:13 · 4 answers · asked by Anonymous

2007-02-26 09:13:34 · 12 answers · asked by Sandra C 1

A child and sled with a combined mass of 45.0 kg slide down a frictionless hill. If the sled starts from rest and has a speed of 8.0 m/s at the bottom, what is the height of the hill?

_____ meters

2007-02-26 09:05:54 · 2 answers · asked by Khoi 1

2007-02-26 08:40:45 · 7 answers · asked by Alexander 6

I have two very difficult physics electricity circuit questions that i have been trying to do for the past few hours. Can someone please try them and show your work so i can understand what you did to solve the questions.

R stands for Resistance!
V stands for Voltage!
I stands for Current!

The "Re" is the sum of all the resistance in the circuit.

They are posted on this webpage:
http://piczo.com/mohamadatwy?cr=1&rfm=y

2007-02-26 08:33:33 · 3 answers · asked by many men 1

2007-02-26 08:32:14 · 2 answers · asked by a_happy_bunny 2

2007-02-26 08:26:33 · 6 answers · asked by flowersgardenia 1

2007-02-26 08:17:31 · 5 answers · asked by Pretty Princess 2

A magazine/book with this info

2007-02-26 08:06:21 · 2 answers · asked by Patrick P 1

2007-02-26 07:46:44 · 1 answers · asked by mariposa 1

1. A toaster uses 10 A of current at 120 V. Calculate:
a) the power (in watts) used by the toaster.

b) the energy (in joules) used by the toaster if it is used for 1 minute.

c) the energy (in joules) used by the toaster if it is used for 5 minutes.

2. An electric drill uses a current of 3.5 A. The drill operates on 120 V, what is the drill's power rating?

3. A battery operated radio has a 6 V battery and used 0.1 A of current. What is the power of the radio?

4. A light bulb is rated at 60 W, 120V.
a) How many amperes of current does the bulb require?

b) How much energy does the bulb use if it is used steadily for two hours?

2007-02-26 07:46:30 · 1 answers · asked by Anonymous

Problem:
http://img339.imageshack.us/img339/4518/phys2lh6.gif

2007-02-26 07:21:53 · 3 answers · asked by sotkinghunter 1

Something that a bullet can't go through?

2007-02-26 07:19:50 · 7 answers · asked by Leo 3

2007-02-26 06:50:09 · 1 answers · asked by Anonymous

Sounds and Colours or Colours and Sounds. Colours are just what our brain see's, we all really see in a shaded grey. We only see colours when our brain picks up radiant pixals from what we are looking at that turns them into colour. Anyhow this I know. So answer my questen, in a way that even the most dim person can understand it.

2007-02-26 06:42:54 · 12 answers · asked by GIZZMO 2

2007-02-26 06:41:43 · 8 answers · asked by goth :) 1

The "pipe" is a PVC conduit, 3 feet in diameter, wall thickness 3 inches, 100 feet long, laying horizontally, capped at one end, the other end is an open-ended 90 degree elbow 3 feet long. It is filled with fresh water. Ambient temperature is 20 below zero. Will the pipe burst or will the frozen water extrude from the open, uncapped end of the conduit (leaving the PVC undamaged)? (Any suggestions to prevent conduit rupture?)

2007-02-26 06:40:18 · 5 answers · asked by viajes2go 2

2007-02-26 06:40:16 · 4 answers · asked by goth :) 1

2007-02-26 06:39:10 · 13 answers · asked by goth :) 1

I want to find momentum in a problem with velocity and mass. Does velocity x mass= Momentum?

I need to know, thanks.

2007-02-26 06:37:28 · 4 answers · asked by I_go_hyphy_I_go_dumb 2

2007-02-26 06:14:22 · 13 answers · asked by wheelrim 2

2007-02-26 06:13:04 · 9 answers · asked by Crystal D 1

2007-02-26 06:07:46 · 19 answers · asked by satya_ggpsakp 1

Is Science limited in the types of questions it can answer, or is there no question that science cannot answer? If there are limits, what are they?

2007-02-26 05:58:50 · 6 answers · asked by Don 1