Friday
September 19, 2014

Homework Help: physics problems

Posted by Jess on Tuesday, October 16, 2007 at 7:41pm.

please check my answers.

17. explain how the sport of pole vaulting dramatically changed when flexible fiberglass poles replaced still wodden poles?
-the fiberglass poles had more momentum and PE than still wooden poles?

20. does the international space station have gravitational pe? ke? explain?
-It has gravitation pe, but I am stuck as to why?

25. what does the work theorem say about the speed of a satillite in circular orbit? (this one I dont understand)

30.a moving hammer hits a nail and drives it into a wall. if the hammer hits the nail with twice the speed, how much deeper will the nail be driven? if it hits with three times the speed?
-would it be three times the speed

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Magnets-Physics - I have a few questions that I am not too sure of. why is it ...
math - On the side of a parade ground there are two flag poles. The first is 11m...
Algebra - A wire is run between two tips of two poles. One pole is 23 ft. taller...
Science - Physical - Earth's magnetic field induces some degree of magnetism in ...
geometry - Two poles, 60 feet tall and 20 feet tall, stand on opposite sides of ...
algebra - dan has 6 worms on each pole and gary has 11 worms on each pole there ...
PRE ALGEBRA - solution to electrical poles that carry electrical wire seem to ...
physics - why does the earth have a magnetic declination? a. the earth's axis of...
PHYSICS 2 - A horizontal wire that runs east-west carries a steady current to ...
Math - Ranchers in Sweetwater, Texas hold a rattlesnake round up each year. The ...

Search
Members