Relativity might seem far removed from daily life, but even some older technologies had to take it into account. The electrons that draw the picture on the screen in an old-fashioned television set are accelerated through a potential difference of 18.0 kV. Required:
a. Calculate the speed of the electrons using the Newtonian formula for kinetic energy.
b. Calculate the speed of the electrons using the relativistic formula for kinetic energy.

the answer is 46 mls because when you add the speed per second it increses the speed

b) 10 minutes

girls stopped for 10 minutes.

b.transmitters send radio waves, and receivers capture radio waves.

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.