A61-kg acrobat must jump high and land on his brother's shoulders. to accomplish this, he leaps from a crouched position to a height where his center of mass is 1.20 m above the ground. his center of mass is 400 mm above the ground. part a: what is the average force exerted on him by the ground during the jump? part b: what is his maximum speed?

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.

According to valence bond theory, which orbitals overlap in the formation of the bond in hf according to valence bond theory, which orbitals overlap in the formation of the bond in hf 2s on h and 2p on f 1s on h and 2s on f 1s on h and 1p on f 1s on h and 2p on f 1s on h and 3p on f

The solid that is formed and usually sinks to the bottom of a solution is the