What is the wavelength of a wave whose speed and period are 72.0 m/s and 5.00 s , respectively ?

An object has a weight of 500 on earth what is the mass of this object

Your town is considering building a biodiesel power plant describe at least two advantages and two disadvantages

You can watch static electricity in action by rubbing an inflated balloon against your hair. your hair will actually stand on its end! it does this because each hair becomes charged, and they all repel one another.