Find the ratio of the force that the body muscles exert on bones to the gravitational force that Earth exerts on the object being lifted. Express your answer in terms of some or all of the variables l , m , d , and the constant g . Fmg = ???
Puzzling Homework Question!

I'm thinking it's 2 you are asked to explain the earth's magnetic field. which is the best reply? 1. the earth's magnetic south is similar to the north pole of a magnet. 2. the earth's core has a strong magnetic charge similar to the south pole of a magnet. 3. the earth's geomagnetic south is similar to the south pole of a magnet. 4. the earth's magnetic charge is not centered at either pole; it varies based on location.

Awave with a frequency of 500 hz is traveling at a speed of 100 m/s.what is the wavelength?

Two 2.0-cm-diameter disks face each other, 1.0 mm apart. they are charged to ±10 nc. what is the electric field strength between the disks? a proton is shot from the negative disk toward the positive disk. what launch speed must the proton have to just barely reach the positive disk?