12. Ett metallblock (1,2 kg) glider med konstant hastighet längs en bordsyta. Blocket är via en lättrörlig
trissa fast vid en vikt (300 g) som drar i blocket.
1,2 kg
300 g
Bestäm friktionstalet mellan blocket och bordet.
Svar:
С
с

Acatapult is tested by roman legionnaires. they tabulate the results in a papyrus and 2000 years later the archaeological team reads (distances translated into modern units): range = 0.4 km; angle of launch = π/5 rad; landing height = launch height. what is the initial velocity of launch of the boulders if air resistance is negligible?

The electric potential a distance r from a small charge is proportional to what power of the distance from the charge? a. r^-1 b. r c. r^-2 d. r^2

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