An experiment is performed where light of different frequencies is shined on a silver plate. The work function for silver is 4.73 eV. (a) What is the lowest frequency (the "cutoff" frequency, in Hz) of light incident on sodium, below which no photoelectrons will be emitted from its surface?(b)What is the longest wavelength (the "cutoff" wavelength, in nm) of light incident on sodium, above which no photoelectrons will be emitted from its surface?(c) Photons of energy 3.62 eV are incident on the sodium plate. What is the maximum kinetic energy (in eV) of the ejected photoelectrons?

Researchers determine that the biodiversity in a woodland region is declining. they identify two major threats to the region's biodiversity, a method to address each threat, and the expected outcome of each method. this information is shown in the table. a) reforestation would not benefit many species because most forest species live on the ground. b) reforestation would take the longest time to be effective because trees take several years to grow. c) biological augmentation would benefit only a few species because is is typically not very effective. d) biological augmentation would take less time to ve effective because it targets the majority of prey species.

Suppose you increase your walking speed from 7 m/s to 13 m/s in a period of 2 s. what is your acceleration?

On average 8 bananas make up one pound. the price is four pounds for 5.00. you must buy 25 bananas.what is your cost?