Physics, 07.04.2020 16:25 crawford184232323234
Determine the minimum number of photons that must enter the eye's pupil each second in order for an object to be seen. Assume that the pupil's radius is 0.20 cm and the wavelength of the light is 550 nm . To see an object with the unaided eye, the light intensity coming to the eye must be about 5×10−12J/m2⋅s or greater. Calculate Nmin... I keep getting 1.38 e25 which is not right and I can figure out what I am doing wrong.
Answers: 3
Physics, 22.06.2019 06:00, azaz1819
The magnetic field inside a superconducting solenoid is 4.50 t. the solenoid has an inner diameter of 6.20 cm and a length of 26.0 cm. determine (a) the magnetic energy density in the field and (b) the energy stored in the magnetic field within the solenoid.
Answers: 2
Physics, 22.06.2019 12:30, shanicar33500
Aboy with a mass 25 kg climbs into a small tree. he sits on a branch that is 2.o m above to the ground. what is his gravitational potential energy above the ground?
Answers: 1
Determine the minimum number of photons that must enter the eye's pupil each second in order for an...
Social Studies, 12.09.2021 01:00
Biology, 12.09.2021 01:00
English, 12.09.2021 01:00
Chemistry, 12.09.2021 01:00
History, 12.09.2021 01:00