Physics - March 2007

Fred is goin 2 Mexico where he jumps off a 27m cliff above the ocean. His mass is 80kg. what is his kinetic energy after fallin 17m

2007-03-05 11:15:58 · 1 answers · asked by damigurl05 1

2007-03-05 11:03:29 · 2 answers · asked by damigurl05 1

2007-03-05 11:02:43 · 5 answers · asked by XoSexierDenYewXo 1

what would be the equation be for change in distance, using x for velocity initial, z for time, y for acceleration, and using units of meters and seconds? (as simplified as possible) I have a quiz tommorow, and I know the actual formula, and how to use it to find an answer with actual numbers, but the quiz is with variables instead

Thanks for the help!

2007-03-05 10:54:24 · 3 answers · asked by makelovenothate 2

2007-03-05 10:50:12 · 2 answers · asked by damigurl05 1

plz give definitions

2007-03-05 10:44:04 · 3 answers · asked by Anonymous

http://i165.photobucket.com/albums/u78/RLB31384/p4_27alt.gif

Assume that the three blocks portrayed in Figure P4.27 move on a frictionless surface and that a F = 48 N force acts as shown on the m = 2.5 kg block. The acceleration is 8.72727272 m/s^2 and the tension of the cord is 26.1818.

I dont even know how to start this problem, thanks for the help.

2007-03-05 10:42:32 · 2 answers · asked by Erin C 1

Example: Fred to a trip to Mexico where he jumps off a clif which is 27 m above the ocean. His mass is 80kg. How do i find his potiential energy after falling 17m

2007-03-05 10:36:45 · 2 answers · asked by damigurl05 1

In high winds, telephone and power lines oscillate perpendicular to the direction of the wind. Why is that?

2007-03-05 10:36:34 · 1 answers · asked by Anonymous

what is the name of the effect were higher wind speeds have lower air pressures, like an airplane makes the air move faster on top of the wing and this creats lower air pressure to lift the aircraft.

2007-03-05 10:26:41 · 2 answers · asked by Anonymous

What is the tension of the cord in this image?

http://img255.imageshack.us/my.php?image...

Assume that the three blocks portrayed in Figure P4.27 move on a frictionless surface and that a F = 48 N force acts as shown on the m = 2.5 kg block.

I cant figure out how to get this...I got the acceleration of 8.727272 which is right. but I cant get the tension I take the acceleration add it to 9.8 and then multiply by the mass, I wasnt sure which mass to multiply it by to get the tension though because the problem has blocks on both ends, I think its just the blocks on the left right?

18.5272727272*3=55.58181818 N but the problem says its wrong...help?

2007-03-05 10:19:04 · 2 answers · asked by Anonymous

2007-03-05 10:16:08 · 5 answers · asked by jack i 1

a 34 kg box rests on the back of a truck. the coefficient of static friction between box and truck bed is .233. the acceleration of gravity is 9.8 m/s^2. also what is the max acceleration can the truck have before the box slides ?

2007-03-05 10:03:17 · 3 answers · asked by Anonymous

http://img255.imageshack.us/my.php?image=p427altuz9.gif

Assume that the three blocks portrayed in Figure P4.27 move on a frictionless surface and that a F = 48 N force acts as shown on the m = 2.5 kg block.

I cant figure out how to get this...I got the acceleration of 8.727272 which is right. but I cant get the tension I take the acceleration add it to 9.8 and then multiply by the mass, I wasnt sure which mass to multiply it by to get the tension though because the problem has blocks on both ends, I think its just the blocks on the left right?

18.5272727272*3=55.58181818 N but the problem says its wrong...help?

2007-03-05 09:50:08 · 3 answers · asked by Anonymous

The Earth has a mass of 5.98*10^24 kg, the Moon has a mass of 7.35*10^22 kg, and their center-to-center distance is 3.85*10^8 m. How far from the cneter of the Earth is the Earth-Moon center of mass? Is the Earth-Moon center of mass above or below the surface of the Earth? By what distance? (As the Earth and Moon orbit one another, their centers orbit about their common center of mass.)

2007-03-05 09:49:29 · 5 answers · asked by superdancer05 1

The only light to reach very far beneath the surface of the ocean is greenish blue.Oblects at there depths either reflect greenish blue or reflect no colors at all.If a ship that is painted red,green,and white sinks to the bottom of the ocean, how will these colors appear? plz explain

2007-03-05 09:48:54 · 2 answers · asked by kobay 2

2007-03-05 09:44:01 · 7 answers · asked by nee-nee 1

a car is traveling at 59.6 km/h on a flat highway. the acceleration of gravity is 9.8 m/s squared. the coefficient of friction between the road and the tires is .172.

2007-03-05 09:42:00 · 3 answers · asked by Anonymous

2007-03-05 09:37:15 · 1 answers · asked by scaliagirl4 1

Can something have energy without having momentum? Why or why not?

2007-03-05 09:26:05 · 7 answers · asked by epbr123 5

I need to no for our 7th grade Science olympiad the mechanical advantage formula and the actual mechanical advantage formula for a wedge, screw ,lever, pulley, inclined plane, and wheel and axel.
any answers will be very apperciated plz respond guys !!!!!!!!!!!!!!!!!!!!!!!!!!!!!

2007-03-05 09:24:21 · 1 answers · asked by $-<Connor>-$ 1

What is that called?

2007-03-05 09:24:12 · 6 answers · asked by Anonymous

In a circus performance, a monkey is strapped to a sled and both are given an initial speed of 4.9 m/s up a 16 degree inclindes track. The combined mass of monkey and sled is 19kg, and the coefficient of kinetic frictin between sled and incline is 0.31. How far up the incline does the sled move?

2007-03-05 09:22:32 · 1 answers · asked by krstilyzed 1

in assending values
there should be 5 answers

2007-03-05 09:16:54 · 6 answers · asked by Anonymous

A person walks into a room that has, on opposite walls, two flat mirrors producing multiple images. When the person in 5ft from the mirror on the left wall and 10ft from the mirror on the right wall, find the distances from the person to the first three images seen in the left-hand mirror.
I am having a problem with visualizing the problem

2007-03-05 09:15:37 · 1 answers · asked by Kitana 2

2007-03-05 09:09:33 · 1 answers · asked by Anonymous

2007-03-05 09:09:31 · 8 answers · asked by made_in_china77 1

2007-03-05 09:07:33 · 3 answers · asked by Anonymous

in ohms (resistance) and amps (current)

2007-03-05 08:57:14 · 7 answers · asked by Anonymous

i was sitting in science today and a thought struck me. if electrons have a wide orbit around a nucleus what is the space in between called/ made up of? it can't be made of any known compound because atoms are the smallest known particles and it's mostly empty space. is there a specific name for this? have any scientific properties been discovered with it such as friction?

if anyone knows i would greatly appreciate it if you could also supply a link to information regarding it.

btw only intelligent answers please. don't give me crap like "it's air!" only intelligent responses.

2007-03-05 08:49:42 · 6 answers · asked by Ian F 4