Energy of photoelectrons emitted from a photosensitive surface is 1.56 ev. If it’s threshold wavelength is2500A find the wavelength of incident light

Abearing is designed to a reduce friction b. support a load c.guide moving parts such as wheels, shafts and pivots d. all of the above

Calculate the mass of an object that has a momentum of 100kg x m/sec and velocity of 4 m/sec

Give your knowledge of these things in your paper, you will compare and contrast analog and digital signals to determine which is more reliable for encoding and transmitting information. you’ll compare these features: signal shape numerical values for signal measurements amount of data that can be transmitted energy requirements privacy and security (ability of the signal to be encoded in a secret code) clarity of signal in the space provided, write down what you already know about any of these features. if you’re not sure, write down questions you might have about the features.