Certain mushrooms launch their spores by a catapult mechanism. as water condenses from the air onto a spore that is attached to the mushroom, a drop grows on one side of the spore and a film grows on the other side. the spore is bent over by the drop's weight, but when the film reaches the drop, the drop's water suddenly spreads into the film and the spore springs upward so rapidly that it is slung off into the air. typically, the spore reaches a speed of 1.60 m/s in a 5.30 μm launch; its speed is then reduced to zero in 1.30 mm by the air. using that data and assuming constant accelerations, find the acceleration in terms of g during
(a) the launch and
(b) the speed reduction.

Part a)

Part b)

Explanation:

Part a)

During the launch

speed will increase from rest to final speed of 1.60 m/s

the distance moved by it is given as

now we have

so we have

now in terms of g it is given as

Part b)

During  speed reduction

we know that final speed will be zero by air in distance 1.30 mm

so we have

Now in terms of g it is

answer: the exterior temperature of commercial jet planes as they leave the stratosphere and return to the ground increases steadily.

explanation:

the lower most layer of atmosphere is troposphere which extends from 0 to 12 km above the surface of the earth. the temperature initially decreases as distance is increased from the earth's surface. commercial jets fly in lower part of the stratosphere. the stratosphere extends upto 50 km. the temperature in stratosphere starts rising again due to presence of ozone which traps the uv rays.

thus, when the planes leave the stratosphere and return to the ground, the exterior temperature increases steadily.

heat the gas and measure the pressure