Physics - December 2006

A 98 newton sack of grain is hoisted to a storage room 50 meters above the ground floor of a grain elevator.

What is the icrease in potential energy of the sack of grain at this height?

The rope being used to lift the sack of grain breaks just as the sack reaches the storage room. What kinetic energy does the sack have just before it strikes the ground floor?

2006-12-03 13:50:43 · 3 answers · asked by josh h 3

2006-12-03 13:46:58 · 5 answers · asked by mollie g 1

I heard they store it in concrete casks in the ground surrounded with lead, is that true?

2006-12-03 13:40:59 · 8 answers · asked by Be Still and know He's God 5

A block mass 2.50 KG is pushed 2.2 M along a frictionless horizontal table by a constant 16 N force directed 25degrees below the horizontal. Determine the work done by (a) the applied force, (b) the normal force exerted by the table (c) the force of gravity, and (d) the net force on the block.

= HOW TO FIND THEM ALL? ESPECIALLY A.

2006-12-03 13:37:47 · 6 answers · asked by Anonymous

2006-12-03 13:34:35 · 7 answers · asked by Anonymous

A 14,700 Newton car is traveling at 25 m/s. The brakes are applied suddenly, and the car slides to a stop. The average breaking force between the tires and road is 7100 Newtons. How far will the car slide once the brakes are applied?

2006-12-03 13:28:09 · 3 answers · asked by josh h 3

Please be more creative than "the atomic bomb", because that's the obvious answer, and you'll be lame and unoriginal if you say that

2006-12-03 13:22:24 · 9 answers · asked by Forest Fest 2

what is it?

2006-12-03 13:16:50 · 3 answers · asked by im quaint 2

You are shelving books in a library. You lift a book from the floor to the top shelf. The KE of the book on the floor was 0, & the KE of the book on the top shelf is 0, so there is no change in KE. Yet you did some work in lifting the book. Is the work-Kinetic energy theorem violated?

& LAST question (some assistance please)

- A ball is throw straight up into the air. At what position is the KE a maximum? At what position is the gravitiational potential energy a maximum?

2006-12-03 13:13:27 · 3 answers · asked by Sheyna 1

(continued) wave is traveling.

A) true
B) false

2006-12-03 13:08:24 · 1 answers · asked by gbmac722 2

if it were possible to go back in time, would we be ourselves now or then and if we bacame ourselves then how would we ever get back to now? You understand right? would we be witnissing our past or living it?

2006-12-03 13:06:11 · 6 answers · asked by Richard C 3

2006-12-03 12:57:10 · 3 answers · asked by Anonymous

2006-12-03 12:56:35 · 5 answers · asked by audeta82 1

You are shelving books in a library. You lift a book from the floor to the top shelf. The KE of the book on the floor was 0, & the KE of the book on the top shelf is 0, so there is no change in KE. Yet you did some work in lifting the book. Is the work-Kinetic energy theorem violated?

& LAST question (some assistance please)

- A ball is throw straight up into the air. At what position is the KE a maximum? At what position is the gravitiational potential energy a maximum?

2006-12-03 12:56:01 · 5 answers · asked by Sheyna 1

That's the whole question.

I would appreciate it if someone could help me with this question as soon as possible.

2006-12-03 12:53:37 · 2 answers · asked by abc123 1

What makes soap bubbles so colorful? Nodes, longitudinal waves, intereference of light? standing waves?

2006-12-03 12:51:16 · 3 answers · asked by rykster22 1

if the boat moves directly upstream relative to the water of the river of my previous question which was (a straight river with parallel banks flows at 4km/h. a boat moves directly downstream relative to the water at 11km/h. the velocity of the boat relative to the river bank is...?) at 9km/h, its velocity relative to the river bank is now...?

2006-12-03 12:50:33 · 1 answers · asked by Fatima 1

2006-12-03 12:49:55 · 2 answers · asked by paulinatran10 1

a diver achieves a horizontal velocity of 3.75 m/s from a diving piano rm located 6.0 m above the water. How far from the edge or the platform will the diver be when she hits the water?

2006-12-03 12:48:08 · 1 answers · asked by Anonymous

Okay this is simple thinking on a massive scale, I invented this funny question and nobody really knows, so I'll ask all of you. Considering the sun is made up of more than 90% hydrogen, if you were to add 2 oxygen atoms to the hydrogen atom, would the sun turn into a huge water bubble??? (H20) Hehehe...

2006-12-03 12:43:20 · 4 answers · asked by philosopher 3

A rifleman raises his gun and aims it at a tin can target on a shelf in the shooting range. If the bore of the gun is pointed straight at the can, under what conditions will the bullet hit the tin can?

2006-12-03 12:42:28 · 1 answers · asked by Anonymous

2006-12-03 12:40:03 · 16 answers · asked by paulinatran10 1

Can Anyone Help Me With This Physics Problem??

A block of mass m = 2.02 kg slides down a 30.8 ° incline which is h = 3.46 m high. At the bottom, it strikes a block of mass M = 6.90 kg which is at rest on a horizontal surface. (Assume a smooth transition at the bottom of the incline.) If the collision is perfectly elastic, and friction can be ignored, determine the speed of the smaller block and larger box after the collision.

Please help with any advice on how to solve this problem. It seems like there is not enough information to go on.

2006-12-03 12:31:15 · 2 answers · asked by Anonymous

to get total potential energy, do u just add up all the PE's and wut about gravitational potential energy what do you do with that?

2006-12-03 11:59:36 · 3 answers · asked by socom_lover 2

2006-12-03 11:53:06 · 5 answers · asked by g-maniac 2

2006-12-03 11:52:14 · 3 answers · asked by g-maniac 2

There was a show on TV about quantum physics, I think narrated by Brian Greene. In one part he described instantaneous, faster than light communications between two particles and he named the person that came up with the theory that everything is connected. What was the term he used for this instant communication and what was the name of the person that came up with that connection theory?

2006-12-03 11:40:21 · 5 answers · asked by another Yahoo 1

where the last drop of water go in a glass?top or bottom?

2006-12-03 11:39:04 · 6 answers · asked by Anonymous

???

2006-12-03 11:38:43 · 3 answers · asked by toasterlove 2

the gravitron ride at the county fair is mike's favorite ride. it has a radius of 4 meters and the ride takes 2 seconds to complete one full revolution. whats mike's linear (tangential) speed? v=

2006-12-03 11:37:30 · 2 answers · asked by Anonymous