At a particular instant the location of an object relative to location a is given by the vector ra = 7, 5, 0 m. at this instant the momentum of the object is p = −10, 15, 0 kg · m/s. what is the angular momentum of the object about location a? (express your answer in vector form.)

Angular momentum L is given by r X P where r is the perpendicular distance and P is the momentum. Hence our r in the equation is the distance a. So we have r=a= (7, 5, 0)/r . I had to divide by "r" because the vector appears as ra and not r, and. P = (-10, 15, 0) Taking the cross product. i (5·0 - 0·15) - j (7·0 - 0·(-10)) + k (7·15 - 5·(-10))/r = = i (0 - 0) - j (0 + 0) + k (105 + 50)/r= {0; 0; 155/r}

You will hear a hissing sound because of the carbon dioxide escaping the can or bottle

The radiation of the fire causes the saucepan to heat up. the conduction of the saucepan then to distribute the heat over the saucepan and to give heat to the water. the convection of the water distributing the heat within the water, till all the water is boiling