4. What is the resultant displacement of a hiker that goes 8.0km[W], 5.0km[E], 9.1km[58 S of E], and finally 7.4km[N35 E)?

Three point charges, two positive and one negative, each having a magnitude of 20 μc are placed at the vertices of an equilateral triangle (30 cm on a side). what is the magnitude of the electrostatic force on the negative charge

Crowbar of 5 metre is used to lift an object of 800 metre if the effort arm is 200cm calculate the force applied

Work out sian speed for the first 30 minutes of her journey. give your answer in km/h.