What is the energy difference between the second excited state and first excited state of an electron in the "box" of size L=1nm? A) 1.9 eV B) 1.1 eV C) 0.6 eV D) 0.3 eV E) 0.2 eV

Warming in front of a fire while camping is an example of? A. Conduction B. Convection C. Radiation

How is water different from most liquids? it expands when it freezes

You see lightning before you hear thunder because A) light waves can travel through a vacuum. B) sound waves cannot travel through the air. C) light waves travel faster than sound waves. D) sound waves travel faster than light waves i think its c .

In the standing waves experiment, the string has a mass of 47.3 g and a length of 0.93 m. The string is connected to a mechanical wave generator that produce standing waves with frequency of f.

Which data storage device will not have its data scrambled by a magnet?

In the physics of motion a force acting over a distance is?

What is the resistance of a clock if it has a current of 0.30 a and runs on a 9.0-v battery? 0.033 2.7 9.3 30

A child is sledding. He starts at the top of the hill with a velocity of zero, and 3 seconds later he is speeding down the hill at 12 meters per second. What is the child's acceleration?

An accelerating voltage

A speck of dust on a spinning dvd has a centripetal accelera - tion of 20 m/s2. a. what is the acceleration of a different speck of dust that is twice as far from the center of the disk? b.