What is the wavelength of a wave with f = 0.9 hz and v = 154.9 cm/s

v 154.9= 0.9 length length s little over 154.9cm

atomic = no of protons.

mass number-atomic number = neutron number

when the use of electricity burdens the fuse and miniarure circuit beakers and there is a possibility of a fuse then they automatically cut off the electricity supply to your homes and after you fix the problem u jzt switch it on and it continues the supply of electricity to ur homes