13. Numerical problems A crowbar of length 1m is pivoted at 20 cm away from the load of 400 N. Calculate (i) Effort applied (ii) MA (iii) VR (iv) Efficiency (v) Show a diagram of the lever. The diameters of the wheel and axle are 0,5 m and 20 cm respectively. Calculate its VR. A pulley system consists of 6 pulleys in order to lift the load of 300 N applying 60 N force. What is its efficiency? 25.​

Three archers each fire four arrows at a target. joe’s four arrows hit at points 10 cm above, 10 cm below, 10 cm to the left, and 10 cm to the right of the center of the target. all four of moe’s arrows hit within 1 cm of a point 20 cm from the center, and flo’s four arrows hit within 1 cm of the center. the contest judge says that one of the archers is precise but not accurate, another archer is accurate but not precise, and the third archer is both accurate and precise. which description applies to which archer? explain

Ahydroelectric plant takes energy from water and turns it into electrical energy. what are the transformations of energy in the water molecules that are used in the process of generating electricity this way?

Which is the best for showing percentages of different types of cars sold(gas hybrid , electric , other ) in the united states ?