A casting made of cast iron weighs 4.7 kg. The riser and gating system add another 2.5 kg to the total metal poured during the operation. The melting temperature of this grade of cast iron = 1180°C, its density = 7.6 g/cm3, specific heat = 0.46 J/g°C, and heat of fusion = 126 J/g. Assume that the specific heat has the same value for solid and molten metal. Compute (a) the unit energy for melting and pouring and (b) the total energy to heat the metal to a pouring temperature of 1300°C from a starting temperature of 25°C. (c) What is the volume of the casting?

Choose the most likely outcome of this scenario: jen decided to go bike riding without a helmet. while no one is around during her ride, she is thrown from her bike when her wheel goes into a pothole. she is not injured, but she is terrified to get back on her bike. what happens next? a. her physical health is affected even though she wasn't hurt. b. her mental and emotional health are affected because she is afraid to get back on her bike. c. her social health is affected because she is worried her friends saw the fall. d. her overall health is not affected at all by her fall.

The two required components for a generator

The mass of a bowling ball is 10 kg and the mass of a ping pong ball is 0.015 kg. if the two objects are 5 meters apart, what is the gravitational force ?