Objetos de masas m1 = 4.00 kg y m2 = 9.00 kg están conectados con una cuerda ligera que pasa sobre una polea sin fricción como en la figura siguiente. El objeto m1 se mantiene en reposo sobre el piso y m2 reposa sobre un plano inclinado fijo que tiene θ = 41.0°. Los objetos se liberan del reposo y m2 se desliza 1.15 m por el plano inclinado en 4.95 s.

explanation: in any substance/object, the particles inside it (atoms/molecules) constantly move in random directions and with random speeds (this motion is called brownian motion). as a result, the particles have some kinetic energy (which is proportional to the temperature of the substance).

explanation:

have a great day!

float.

archimedes' principle

denser than water sinks in water.

denser than mercury would sink in it

technology is the application of the knowledge gained by science.

chemical energy --> gravitational potential energy --> kinetic energy --> elastic potential energy --> gravitational potential energy

explanation:

when emma starts the hike, the chemical energy stored in her body is used to climb up the mountain, and so she gains gravitational potential energy (because at the end, she will be at a higher height h above the ground). then she goes bungee jumping: as she falls, this gravitational potential energy is converted into kinetic energy (because her speed increases as she falls down), until the point when the rope stretches, and she stops moving. at that moment, all the kinetic energy is converted into elastic potential energy due to the stretching of the rope. then, this energy is released because the rope returns to its natural length, and emma gains a small increase in altitude , so she gains some gravitational potential energy.