Spiders are more sensitive to oscillations at higher frequencies. for example, a low-frequency oscillation at 1 hz can be detected for amplitudes down to 0.1 mm, but a high-frequency oscillation at 1 khz can be detected for amplitudes as small as 0.1 î¼m.
for these low- and high-frequency oscillations, we can say that: a. the maximum acceleration of the low-frequency oscillation is greater. b.the maximum accelerations of the two oscillations are approximately equal. c.the maximum acceleration of the high-frequency oscillation is greater.

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.

d) physical means can be used to separate the components of air.