When light with a wavelength of 209 nm is incident on a certain metal surface, electrons are ejected with a maximum kinetic energy of 3.57 × 10^-19 j. determine the wavelength (in nm) of light that should be used to double the maximum kinetic energy of the electrons ejected from this surface.

An ideal spring has a spring constant (force constant) of 2500 n/m, is stretched 4.0 cm, how much elastic potential energy does it possess? (a) 3j (b) 0.00j (c) 1j (d) 2j (e) 4j

The act of moving from one place to another. a. locomotor b. aerobic c. stationary d. static

Apositive charge moves in the direction of an electric field. which of the following statements are true? check all that apply. check all that apply. 1.the potential energy associated with the charge decreases. 2. the electric field does positive work on the charge. 3. the electric field does negative work on the charge. 4. the potential energy associated with the charge increases. 5. the electric field does not do any work on the charge. 6. the amount of work done on the charge cannot be determined without additional information.