100 !
egg drop test:
1. calculate velocity of each protoype when it impacts the ground.
2. use the impulse momentum theorem to calculate the impulse of the structure with the egg on impact. (assuming the egg is brought to rest on impact)
3. determine the force of impact on the egg for each prototype that would occur based on the devices mass and acceleration at the time of impact. (this calculated force does not take into account the device desgin that may reduce the force being felt)

prototype 1: mass of 87g, drop height of 5m, and assume freefall
prototype 2: mass of 150g, drop height of 5m, and upward force of air resistance equal to 0.35n
prototype 3: mass of 225g, drop height of 5m, and assume freefall

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.

adding a(n) to an electric circuit would increase the magnetic field around a wire;

b. solenoid

a solenoid is a type of electromagnet whose purpose is to generate a controlled magnetic field.

if the purpose of the solenoid is instead to impede changes in the electric current, a solenoid can be more specifically classified as an inductor rather than an electromagnet.