The lines in an atomic line emission spectrum are due to

A block oscillating on a spring has a maximum speed of 20 cm/s. part a what will the block's maximum speed be if its total energy is doubled?

What do electric and magnetic fields contain and transport?

Questions 1. Calculate the molar mass of an element. 2. Calculate the molar mass of a compound. 3. How do you determine the number of protons, electrons and neutrons in an atom given it's atomic number. 4.

Which of these is an example of a mechanical wave? A. Light from a flashlight B. Police siren. C. Sunlight D. Microwaves used to heat food.

Which equation describes the cousins function for a right triangle?

T=2π√ (l/g) is dimensionally correct

A penny falls from a windowsill which is 25.0 m above the sidewalk. How much time does a passerby on the sidewalk below have to move out of the way before the penny hits the ground?

Show that the Newton has the units of mass times acceleration.

Light travels at 150000000km from the sun to earth in 8 minutes. What speed is this in Km/s

Electricity problem (coulomb's law)