Acylindrical tungsten filament 16.0 cm long with a diameter of 1.00 mm is to be used in a machine for which the temperature will range from room temperature (20⁰ c) up to 120⁰ c. it will carry a current of 12.5 a at all temperatures ( resistivity of tungsten at 20⁰ c is 5.25×10−8ωm, the temperature coefficient of resistivity at 20⁰ c is 0.0045 ⁰ c-1)

a) what will be the maximum electric field in this filament? express your answer using two significant figures.
b) what will be its resistance with that field? express your answer using two significant figures.
c) what will be the maximum potential drop over the full length of the filament? express your answer using two significant figures.

Exercise 2. find the wavelength of a photon emitted when an electron jumps from the n = 3 energy level down to the n = 2 energy level. where is this photon in the electromagnetic spectrum?

Ryan is examining the energy of the particles in a bar of gold. what is ryan most likely studying?

3. a worker pushes a 30.5 kg polished stone along a polished table with a force on bonin a straight line for 5.20 s after starting from rest. there is no friction between thestone and the table. at the end of the table. the stone is hooked to a cable with a lengthof 62.0 cm to rotate it to a rough table to store until they can be picked up. the roughtable has a coefficient of static friction 0.702 with the polished stone. remember that 8= 9.80 m/s2a) what is the speed of the stone when it is hooked to the cable? b) what is the tension in the cable while the stone is rotating? (there is still nofriction)c) how much force is needed to make the stone begin sliding from rest on therough table? ius = 0.70262.0 cm30.5 kg20.5 kg6= 0