HELPP ME PLZ
12. Which of the following scenarios will result in work NOT being done?
a. A robot lifts a ball above its head.
b. A person pushes a box along the ground.
c. A waiter carries a tray of food across a restaurant.
d. A basketball player shoots a three-pointer.
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Ответ:
Explanation:
a) 9 x 10 ^ 7 hz
b) v= (f) x ( lambda)
3 x10^8 / 9 x 10 ^7 = x
therefore x( lambda) = 3.33 m