What is crude?

777

By passing current through a wire wrapped around an iron rod, william sturgeon invented the?

937

Will a dc motor actually produce voltage if it is spun in reverse?

1025

What two properties of electromagnetic waves are used to attach info to radio signals?

885

Can a vector have a component equal to zero and still have a nonzero magnitude?

884

Explain what separates the outer core from the mantle above it?

698

What are the examples of techno fossils?

678

What is clay?

734

What are some of the sub-disciplines within the field of geology?

8453

What is seismic imaging?

973

what is the mean of g= 9.8m/s2. waht is the mean of unit m/s2

1307

Tell me is it possible that a nucleus has negative mass defect?

828

Explain which is the largest reef?

738

Explain what layer of the earth does magma form?

756

What is radium used for?

958