The magnitude of the gravitational field on the surface of a particular planet is 2g. the planet’s mass is half the mass of the earth. what is the planet’s radius in terms of the radius rg of earth?

Can you think of a way a rock unit with an older fossil could be above a rock until with a younger fossil? describe the scenario.

An electric current in a wire will push or pull on a permanent magnet. which statement best explains how an electric current creates an electromagnetic force on another magnet?

You are a sales representative for a company that makes a new alternate fuel for vehicles. you have prepared a presentation for the environmental engineers to sell your new product. what question do you expect the audience to ask regarding whether the new fuel will cause less damage to the environment? a. do we have to change any parts of the vehicle to use this alternate fuel? b. will the vehicles get better fuel mileage with the alternate fuel? c. how much greenhouse gas does your fuel produce compared with current fuel sources? d. is the alternate fuel more expensive than fossil fuel?