Athin copper rod 1.0 m long has a mass of 0.050 kg and is in a magnetic field of 0.10 t. what minimum current in the rod is needed in order for the magnetic force to balance the weight of the rod?

Infrared rays have a shorter wavelength than question 11 options: x-rays. ultraviolet rays. radio waves. gamma rays.

Mechanical energy is when the amount of kinetic and potential energies added together remains the same. conserved created lost

An ideal otto cycle has a compression ratio of 8. at the beginning of the compression process, air is at 95 kpa and 27°c, and 750 kj/kg of heat is transferred to air during the constant-volume heat-addition process. assuming constant specific heats at room temperature, determine (a) the pressure and temperature at the end of the heat-addition process, (b) the net work output, (c) the thermal efficiency, and (d) the mean effective pressure for the cycle. (4390 kpa, 1730 k; 423 kj/kg; 56.4%; 534 kpa)