A body of weight W kg.wt was placed on a rough horizontal plane. The coefficient of static friction between it and the body was \( \frac{1}{5} \), affected by angle between them is \( 120^{\circ} \). The body was about to move. Find the value of W .

\begin{tabular}{l} Look at the electrical diagram. \\ \( I_{R 1}=0.7 \mathrm{~A} \) \\ \( R 1=3.8 \Omega \) \\ Calculate the source voltage. \\ \hline 2.66 \\ \hline OK. \\ \begin{tabular}{l}\( I_{R 1}=0.8 \mathrm{~A} \) \\ \( R 1=4.7 \Omega \) \\ Calculate the source voltage. \\ \hline\end{tabular} \\ \hline\end{tabular}

Look at the electrical diagram. \begin{tabular}{l}\( V=8.6 \mathrm{~V} \) \\ \( I 1=0.3 \mathrm{~A} \) \\ \( I 2=0.5 \mathrm{~A} \) \\ \( I 3=0.2 \mathrm{~A} \) \\ Calculate the total resistance. \\ \hline 8.6 \\ \hline OK. \\ \( \begin{array}{l}V=10.6 \mathrm{~V} \\ I 1=0.9 \mathrm{~A} \\ I 2=0.3 \mathrm{~A} \\ I 3=0.3 \mathrm{~A}\end{array} \) \\ Calculate the total resistance. \\ \hline\end{tabular}

At sporting events the crowd sometimes generates a "wave" that propagates around the stadium. What type of wave is this?

निकाल्नुहोस् । (If a bus covers 4.2 km of distance in 7 minutes, then calculate its average velocity.) Ans: \( 10 \mathrm{~m} / \mathrm{s} \)

A wave can be propagated on a blanket by holding adjacent comers in your hands and moving the end of the blanket up and down. What type of wave is this? Multiple Choice longitudinal