On a hot summer day, Marcello purchases balloons for his mother’s birthday. He leaves the balloons in his car while he goes into the grocery store. When he returns to his car, Marcello is surprised to discover that the balloons have burst. Why did the balloons burst?

ANSWER>>>>The temperature of the gas inside the balloons increased, causing the volume of the balloons to increase.

Which best represents the law of conservation of mass ?

Asheet of steel 1.5 mm thick has nitrogen atmospheres on both sides at 1200oc and is permitted to achieve a steady-state diffusion condition. the diffusion coefficient for nitrogen in steel at this temperature is 6 x 10- 11 m2 /s, and the diffusion flux is found to be 1.2 x 10-7 kg/m2 -s. also, it is known that the concentration of nitrogen in the steel at the high-pressure surface is 4 kg/m3 . how far into the sheet from this high-pressure side will the concentration be 2.0 kg/m3 ? assume a linear concentration profile.

Select the three ways that the parallel-plate capacitor differs from a car battery.