Hai điện tích q1 = – 5 C và q2 = –12 C được đặt tại hai điểm A và
B trong không khí cách nhau 10 cm. Vẽ
vector cường độ điện trường tổng hợp
tại điểm C và tính góc hợp bởi vector
này với cạnh CB. Biết CA = 6 cm,
CB = 8 cm

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.

this could be newton#'s law of cooling. the cooling curve is exponential

the rearrangement of particles in a physical change. hope this

the answer to this is proletariats.

hope this : )