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Given is a thread pendulum with $I=1\mathrm{.}6m$ and a mass of $m=100kg$ that swings to a maximal angle of $=+-10.$

Calculate the angular frequency of the oscillation! Assume a gravitational acceleration of $9\mathrm{.}81\frac{m}{s^2}.$

Answer: $$

Given is the above circuit with an ideal voltage source $V_{s1}$ and an ideal current source $I_{s2}.$ The device values are $R_1=7,R_2=6,R_3=10,V_{s1}=3V,l_{s2}=8A.$

a$)$ Calculate the equivalent resistance $R_{AB}$ of the circuit with respect to the contacts $AB$ in in ohms.

Answer: