Astationary bomb of mass 5kg exploded into one part a of mass 2kg flying off with a velocity of 60 m/s and another part b of mass 3kg flying off with a velocity v in the opposite direction. find v and the total kinetic energy

In a good thermo flask the main cause of heat loss is

Place several e-field sensors at a few points on different equipotential lines, and look at the relationship between the electric field and the equipotential lines. which statement is true? 1-at any point, the electric field is perpendicular to the equipotential line at that point, and it is directed toward lines of higher voltages. 2-at any point, the electric field is perpendicular to the equipotential line at that point, and it is directed toward lines of lower voltages. 3-at any point, the electric field is parallel to the equipotential line at that point.

How do you calculate the gravitational force on a rubber ball which has a mass of 50g