Q2: You and a friend are watching fireworks. You are standing at a distance of 150 m and your friend is standing at a distance of
700 m. Your friend hears the sound at an intensity of 0.2 W/m².
What is the sound intensity at your location, and how much
power is the firework emitting?

Experiment scenario 2: a biology student wants to conduct a study of how the amount of food affects the weight gain for mice. i have set up four cages with a mouse in each cage. fill in the boxes that would allow the biology student to complete the study correctly

The transfer of heat through the movement of a gas or liquid a. convection b. conduction c. radiation

Electric field of the earth. the earth has a net electric charge that causes a field at points near its surface equal to 150 n> c and directed in toward the center of the earth. (a) what magnitude and sign of charge would a 60-kg human have to acquire to overcome his or her weight by the force exerted by the earth’s electric field? (b) what would be the force of repulsion between two people each with the charge calculated in part (a) and separated by a distance of 100 m? is use of the earth’s electric field a feasible means of flight? why or why not?