DP Physics (first assessment 2025)

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Question 19M.2.SL.TZ2.a

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Date May 2019 Marks available [Maximum mark: 1] Reference code 19M.2.SL.TZ2.a
Level SL Paper 2 Time zone TZ2
Command term Show that Question number a Adapted from N/A
a.
[Maximum mark: 1]
19M.2.SL.TZ2.a

Show that the intensity radiated by the oceans is about 400 W m-2.

[1]

Markscheme

5.67 × 10−8 × 2894

OR

= 396«W m−2» ✔

«≈ 400 W m−2»

Examiners report

This was well answered with candidates scoring the mark for either a correct substitution or an answer given to at least one more sf than the show that value. Some candidates used 298 rather than 289.

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