onsider a room with a slightly open window. A heater is turned on, raising the temperature of the air in the room. Since the room is open to the atmosphere, the pressure is constant. Take the air to be a calorically perfect ideal gas, so the specific energy can simply be written as u = cvT , where T is the absolute temperaturein the room. With these assumptions, how does the total energy in the room, U, change as the temperature is increased? What happens to the energy input by the heater into the room? A simple explanation is sufficient - no need to derive ananalytical result.

the answer is b, have negligible mass

the journeys of marquette, joliet and la salle a) new france expand.

all three of these explorers explored the midwest and the area around the great lakes, which they subsequently claimed for france.

this was a big portion of territory and expanded new france which before then only consisted of quebec province in northeastern canada

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.