Prairie dogs are burrowing rodents. they do not suffocate in their burrows, because the effect of air speed on pressure creates sufficient air circulation. the animals maintain a difference in the shapes of two entrances to the burrow, and because of this difference, the air (rho = 1.29 kg/m3) blows past the openings at different speeds, as the drawing indicates. assuming that the openings are at the same vertical level, find the difference in air pressure between the openings.

Which statement best describes the superposition principle? a.) if two in-phase waves arrive simultaneously at a point, their amplitudes add up b.) if two out-of-phase waves arrive simultaneously at a point, their amplitudes add up c.) if two in-phase waves arrive at a point one after another, their amplitudes add up d.) if two out-of-phase waves arrive at a point one after another, their amplitudes adds up

The temperature in gavin's oven is a sinusoidal function of time. gavin sets his oven so that it has a maximum temperature of 280°f and a minimum temperature of 240°. once the temperature hits 280°, it takes 20 minutes before it is 280° again. gavin's cake needs to be in the oven for 30 minutes at temperatures at or above 270°. he puts the cake into the oven when it is at 260° and rising. how long will gavin need to leave the cake in the oven? (round your answer to the nearest minute.)

Complete the sentence to describe the law of conservation of energy. the law of conservation of energy states that energy cannot be created