An electron orbits the nucleus in a hydrogen atom at a radius of 10-9 m. The orbit is stable because the circumference is three times the DeBroglie wavelength of the electron. What is the speed of the electron to the nearest power of ten? (Do all calculations in terms of powers of ten. h = 10-33 Js. Mass of electron = 10-30 kg)

An electron orbits the nucleus in a hydrogen atom at a radius of 109 m. The orbit is stable because the circumference is three times the DeBroglie wavelength of the electron. What is the speed of the electron to the nearest power of ten? (Do all calculations in terms of powers of ten. h 21033 Js. Mass of electron 21030 kg)