A37-mm automatic gun fires at the rate of 120 rounds of ammunition per minute, but must cool for 2 minutes after 100 rounds are fired. how many seconds will elapse between the firing of the first and last round when 120 rounds of ammunition are fired as rapidly as possible?

Which of the following are guidelines to follow for obtaining accurate observations

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.

Which best term to describe a chemical reaction that absorbs energy from its surroundings? a.thermal conductor b.thermal insulator c.endothermic d.exothermic