Science & Mathematics - 19 November 2007

How do you normalize mass of a moon to that of it's host planet.

use the earth as an example.

thanks.

2007-11-19 11:53:51 · 1 answers · asked by Miss Realistic 2 in Astronomy & Space

2007-11-19 11:53:39 · 6 answers · asked by Average Joes 4 in Chemistry

A bicyclist of mass 70.0 kg puts all his mass on each downward-moving pedal as he pedals up a steep road. Take the diameter of the circle in which the pedals rotate to be 0.40 m, and determine the magnitude of the maximum torque he exerts about the rotation axis of the pedals.

I need some help with this torque problem. What equations do I need to use? Thanks!

2007-11-19 11:51:30 · 2 answers · asked by nglennie_06 1 in Physics

2007-11-19 11:51:20 · 7 answers · asked by norvitz 1 in Mathematics

2007-11-19 11:50:31 · 4 answers · asked by sugrmag58 1 in Weather

2007-11-19 11:48:47 · 3 answers · asked by studdpup 1 in Mathematics

A phone cord is 4.85 m long. The cord has a mass of 0.200 kg. A transverse wave pulse is produced by plucking one end of the taut cord. The pulse makes four trips down and back along the cord in 0.780 s. What is the tension in the cord?

2007-11-19 11:41:58 · 1 answers · asked by Anna H 2 in Physics

london, England have a differnet temperature than Moscow Russia when they are only seperated by 4 degrees of latitude?

2007-11-19 11:40:44 · 3 answers · asked by T 1 in Weather

Is a car tire that is partly deflated more dence, less dense, or of the same density as a totally inflated tire? Why?

2007-11-19 11:40:02 · 2 answers · asked by Anonymous in Physics

????????????
Help please!

2007-11-19 11:39:05 · 1 answers · asked by Anonymous in Mathematics

A softball of mass 0.220 kg that is moving with a speed of 8.5 m/s (in the positive direction) collides head-on and elastically with another ball initially at rest. Afterward the incoming softball bounces backward with a speed of 3.7 m/s.

(a) Calculate the velocity of the target ball after the collision.
(b) Calculate the mass of the target ball.

2007-11-19 11:38:54 · 1 answers · asked by ____ 3 in Physics

My son has a science experiment, he chose to extract DNA from veggies, but is having a difficult time trying to think of the "question" for his project? He doesnt simply want to do "how to extract DNA" but wants to have more to it, like with a variety of veggies or fruits or whatever he can extract DNA from.

2007-11-19 11:36:50 · 3 answers · asked by Rina 5 in Biology

2007-11-19 11:35:43 · 1 answers · asked by Melba G 1 in Botany

at the same time, a stationary trumpeter played the same note. Ballot heard 3.0 beats per second. How fast was the train moving toward him?
- please include how you do it... need help with homework

2007-11-19 11:34:32 · 1 answers · asked by Anonymous in Physics

what is convectional precipitation?

2007-11-19 11:33:15 · 5 answers · asked by Shotgun 1 in Weather

A horizontal 795 N merry-go-round is a solid disk of radius 1.40m, started from rest by a constant horizontal force of 50.3 N applied tangentially to the edge of the disk. Find the kinetic energy of the disk after 2.96s.

soooo stuck i think you need to find torque but i really have no idea

2007-11-19 11:29:03 · 2 answers · asked by Anonymous in Physics

If anyone knows how many cubic centimeters are in a litre, it would be a huge help. Thanks!

2007-11-19 11:28:59 · 4 answers · asked by AnnaBanana 1 in Mathematics

2007-11-19 11:25:23 · 1 answers · asked by damigurl05 1 in Biology

the cookiecutter shark feeds by taking a bite of flesh out whales and large fish. the shark does not kill the larger fish it deed on.

2007-11-19 11:25:18 · 5 answers · asked by deathcab 1 in Zoology

2007-11-19 11:25:02 · 9 answers · asked by ahmed 1 in Mathematics

2007-11-19 11:24:14 · 6 answers · asked by damigurl05 1 in Biology

write the equation of the circle with the given conditions:
1) center (4,9) goes through (7,12)
2) diameter endpoints are (4,-8) and (-2,6)

2007-11-19 11:24:12 · 1 answers · asked by Fuzzyglasses 3 in Mathematics

which is NOT a factor of 47,311? is it 11,17,19,or 23

2007-11-19 11:22:39 · 2 answers · asked by Anonymous in Mathematics

please answer if you really know.. thank you

2007-11-19 11:22:34 · 3 answers · asked by lynxelaine 1 in Medicine

Hey GUYS!! Lol, I just embraced the fact that i am Psychic, and ya-da-ya-da, etc. Problem, Im an empath as well and yea' sometimes when i read people i start to feel like they feel 5 minutes later, it started after i did my friend. Everyone i talk to now (don't touch them) after a while i feel like they feel, if they have pains i have pains,if they feel sluggish i feel sluggish, tired i feel tired! Hyper i feel hyper! HELP! how do i block those emotions, i can control this crap...what do i do. Im getting too many migranes!! Thanks, God bless

2007-11-19 11:22:15 · 19 answers · asked by Anonymous in Paranormal Phenomena

please answer if you really know

2007-11-19 11:20:42 · 2 answers · asked by lynxelaine 1 in Medicine

2007-11-19 11:20:15 · 3 answers · asked by Anonymous in Mathematics

Elisa Dimas is the manager for the Learning Loft Day Care Center. The center offers all day service for pre-school children for $18 per day and after school only service for $6 per day. Fire codes permit only 50 children in the building at one time. State law dictates that a child care worker can be responsible for a maximum of 3 pre-school children and 5 school age children at one time. Ms. Dimas has ten child care workers available to work at the center during the week. How many children of each age group should Ms. Dimas accept to maximize the daily income of the center?

2007-11-19 11:17:52 · 1 answers · asked by blessed 1 in Mathematics

2007-11-19 11:17:06 · 4 answers · asked by Anonymous in Mathematics

When an athlete holds a barbell overhead, the
reaction force is the weight of the barbell on
his hand.
How does this force vary for the case where
the barbell is decelerated upward?
1. The force exerted by the athlete is equal
to the weight of the barbell.
2. The force exerted by the athlete is smaller
than the weight of the barbell.
3. It depends on the will of the athlete.
4. The force exerted by the athlete is greater
than the weight of the barbell

2007-11-19 11:16:59 · 1 answers · asked by Sarah B 1 in Physics