calculate the electric field in the fourth vertex of the rectangle if Q1 = 2x10-8 C (+) Q2 = 106 C (+) and Q3 = 3x10-8 C (-)

Explain to someone who knows nothing about fossils the study of invertebrate paleontology and how it scientists understand the history of the earth. be sure your explanation contains a minimum of two complete sentences.

Gordon is going for a run through the park, but it is cold outside. the low outside temperature could affect his personal safety.

Engineers find a new metal that is stronger than steel but much lighter. this material is also significantly cheaper than what is currently used for most aircraft, available in large quantities, and easy to manufacture. the engineers are excited because this new material will lower the costs of buying and operating airplanes for companies. what is probably the best step for the engineers to make next?