Which one of these particles is negatively charged?

a: neutron

b: electron

c:proton

Meteors can be found in the

What happens to the rock structure during each of type of change?

What two types of evidence are used to classify orgianisms?

What is a difference between a divergent boundary and a convergent boundary

A subway train is traveling north at a speed of 35 km/h while a passenger walks south through the train at a speed of 2 km/h. From the passenger's frame of reference, how fast is she traveling in relation to the train?

I can't figure this out, I could use an explanation too! A speeding truck travels in the positive x direction. It hits a car traveling in the positive y direction. The vehicles are deformed and travel together at an angle θ with the positive x-axis.

Based on your knowledge of the electromagnetic spectrum, why are radio waves considered harmless while ultraviolet waves and x-rays considered harmful?

What is great summary in physical science?

Does ice melt faster in water or air

Why are stars changing colurs by blinking?