Planets that have strong magnetic fields also have rapid rotation and convective fluid interior zones that are also good electrical conductors. the magnetic field of venus is so weak that it has not yet been detected, which makes it at least 25,000 times weaker than earth's magnetic field. examine the venus data file in your textbook. what information here may indicate why venus is lacking a strong magnetic field?

Samir watches a 100-minute movie on his spaceship. maria's spaceshipe flies in the same direction as samir's spaceship but she observes his move to last 125 minutes and his spaceship to be 40 m long. how long does samir observe his own spaceship to be? according to an observer on earth, planet x is stationary. maria and samir depart earth on their spaceships at the same time, each flying at 0.5c. maria flies toward planet x and samir flies in the opposite direction. according to maria, her voyage to planet x takes 9 years. how many years does marias voyage take according to samir?

Give one example to show that when substances are mixed, it may result in a chemical or a physical change depending on the conditions.

What can you increase the strength of an electromagnet by