An electron in a tv picture tube is accelerated through a potential difference of 10 kv before it hits the screen. what is the kinetic energy of the electron in electron volts?

Ateacher gives students four liquids commonly found in the kitchen - vinegar, apple juice, dish detergent, and milk - and ph indicator strips, which measure acidity. the teacher asks the students to put the liquids in order from most acidic to most basic. what type of investigation could the students conduct to determine the correct order for the liquids?

A15,000 kg rocket traveling at +230 m/s turns on its engines. over a 6.0 s period it burns 1,000 kg of fuel. an observer on the ground measures the velocity of the expelled gases to be −1,200 m/s.

Match each type of lever with the correct diagram. 1. first-class 2. third-class 3. second-class