You are using a steel crowbar to lift a big rock, with a smaller stone as a fulcrum at the center of the crowbar, but you are not quite able to lift the rock. what can you change about this setup to lift the rock? choose the correct answer and explanation. move the small stone (the fulcrum) farther from the large stone. this gives you a greater lever arm. move the small stone (the fulcrum) closer to the large stone. this gives you a lower lever arm. move the small stone (the fulcrum) farther from the large stone. this gives you a lower lever arm. move the small stone (the fulcrum) closer to the large stone. this gives you a greater lever arm.

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.

connect the batteries in series and hope

truck y has a greater velocity than truck x.