Can you eat the cookies your browser creates?单项选择题

A

No, these are not edible. They are left by websites you visit.

B

Yes and they have chocolate chips in them.

C

14

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Calculate the De Broglie wavelength of an electron moving with a velocity of [math: 7.26×106ms−1] .Give your answer in standard form to 2 decimal places without units.Example format: [math: 1.23×10−45N] should be written as [ 1.23e-45 ]

Gold is illuminated by light of frequency [math: 1.88×1015 Hz] during a demonstration.Photoelectrons are ejected during this demonstration.If gold has a work function of [math: 7.71 × 10−19 J], determine the maximum kinetic energy of the ejected photoelectrons in Joules.Give your answer in standard form to 2 decimal places without units.For example, [math: 2.34 × 10−15] is written as 2.34e-15

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