A nursing mother mother prepared for her baby milk at 94°c in other to cool to 40°c, She immersed the feeding bottle in an aluminum bowl of heat Capacity 80 jk^-1 Containing 400g of water. If the mass of the mixture is 150g of cal the SHL of the milk mixture. (Take S. H.L of H20-42005 kg-1 K-1)​

What tightening torque should be used for a hexagonal head screw (not split-bolt) on a 250 kcmil conductor?

A0.580-kg rock is tied to the end of a string and is swung in a circle with a radius of 0.500 meters. the velocity of the rock is 4.50 m/s. what is the centripetal force acting on the rock? 15.5 n 5.22 n 69.8 n 23.5 n

Cells in the nervous system have a potential difference of 70 mv across the cell membrane separating the interior of the cell from the extracellular fluid. this potential difference is maintained by ion pumps that move charged ions across the membrane. is this an emf? select the correct answer and explanation. 1)no. the ion pumps cannot separate charges; thus, they cannot create a potential difference. 2)yes. the ion pumps cannot separate charges, but they still can create a potential difference. 3)yes. the ion pumps can actively separate charge; thus, they can create a potential difference. 4)no. the ion pumps can separate charges, but they cannot create a potential difference.