An electric furnace is to melt 40 kg of aluminium/hour. the initial temperature of aluminium is 32°c. given that aluminium has specific heat capacity 950 j/kg k melting point 680*c, latent heat of fusion 450 kj/kg, the efficiency of furnace is 85% and cost of energy is 20 cents/kwhr calculate: (a) power required (b) the cost of operating the furnace for 30 hours

Very large accelerations can injure the body, especially if they last for a considerable length of time. one model used to gauge the likelihood of injury is the severity index ( ), defined as =/ . in the expression, is the duration of the accleration, but is not equal to the acceleration. rather, is a dimensionless constant that = the number of multiples of that the acceleration is equal to. in one set of studies of rear-end collisions, a person's velocity increases by 13.7 km/h with an acceleration of 36.0 m/s2 . let the + direction point in the direction the car is traveling. what is the severity index for the collision?

What is a good example of instantaneous speed

Name the non metal condut electricity