When light with a frequency f1 = 547.5 thz illuminates a metal surface, the most energetic photoelectrons have 1.260 x 10^-19 j of kinetic energy. when light with a frequency f2 = 738.8 thz is used instead, the most energetic photo-electrons have 2.480 x 10^-19 j of kinetic energy

using these experimental results, determine the approximate value of planck's constant.

The approximate value of Planck's constant is

Explanation:

Given that,

Frequency

Kinetic energy

Frequency

Kinetic energy

We need to calculate the approximate value of Planck's constant

Using formula of change in energy

Hence, The approximate value of Planck's constant is

which piece of furniture will have the most inertia and give the furniture movers the most difficulty in moving?  

answer

a 75kg dining table

igneous rocks also form where plates converge. the subducting plate melts as it sinks into the crust of the earth, and the melt rises into the overriding plate forming volcanoes. metamorphic rocks are formed mainly in the lithosphere, wherever there is high pressure and high temperature. -woods