Three charges q, -4q and 2q are placed at the three vertices of an equilateral

triangle of side 10 cm. What is the Potential energy of this system, if q =150

nC in a) J b) eV?

Acylindrical specimen of a nickel alloy having an elastic modulus of 207 gpa (30 × 106psi) and an original diameter of 10.2 mm (0.40 in.) experiences only elastic deformation when a tensile load of 8900 n (2000 lbf) is applied. compute the maximum length of the specimen before deformation if the maximum allowable elongation is 0.25 mm (0.010 in.)

The step-down transformer gives a current of 10a at 24v if the primary voltage is 240v calculate the 1_primary current 2_the power input 3_the power output

All the simple machines make work easier to do by changing the or of a force. a. size; type b. work; type c. size; direction d. type; direction