A. What is the decay constant for Polonium-212 if the half-life is 299x10-9 s?

What type of light does this light bulb produce most (i.e. at what wavelength does the spectrum have maximum intensity)?

Acoil formed by wrapping 80 turns of wire in the shape of a square is positioned in a magnetic field so that the normal to the plane of the coil makes an angle of 28.0° with the direction of the field. when the magnetic field is increased uniformly from 200 µt to 600 µt in 0.400 as, an emf of magnitude 80.0 mv is induced in the coil. what is the total length of the wire?

Aplane travels 1000 miles in 5 hours .what is the planes average speed?