A sample of plutonium-239 decays to one-eighth of its original amount after 7.236 x 104 years. What is its half-life?

What happens to the resistance in the lamp when the current through it increases

In a parallel circuit the current A stays in one path B splits and goes through two components C makes one circle

A large volume of air moving across the surface of the earth know as ...

Ninety-nine percent of the radiation from the sun consists of visible light, ultraviolet light. true or false?

A roller coaster track is 3000 meters long. It takes 100 seconds to travel once around the roller coaster. What is the average speed of the roller coast? Is the velocity constant throughout the trip? Explain

Why did dad leave mom?

Sal drew the electron dot diagram of an aluminum atom as shown. How should Sal correct his diagram? He should add five more dots so that the atom obeys the octet rule. He should add ten more dots so that all thirteen electrons are shown.

What uses electricity

How do the elements in the Noble Gas family compare?

The magnetic field strength within a long solenoid isb=4.0t t, where t is time in seconds. if the radius of thesolenoid is1.0 cm, what is the magnitude of the non-coulomb force that acts on a6.0 c charge a distance6.