If the device is battery operated, how many tests can it perform before replacing or recharging the batteries? And how often (in days) should this happen? . Assume the activation of the imaging sensor takes an amount of energy: 0.05mW Assume that for every test, shooting the image takes 50% of the device's energy. . Assume the battery has a capacity of 2000mAh and 3V operation (typical AA battery) hint for our AA battery the capacity is therefore 6000mWh . Assume every day there will be up to 300 tests performed by the device