What are the two major characteristics that change when air is heated and cooled? How do these characteristics change the movement of air?

discharge occurs when oppositely charged objects get close enough for the air between them to become electrically charged.

You are given a marble by your instructor and are asked to measure its density. Unfortunately, marbles roll when placed on a balance pan, so you decide to use a beaker to hold the marble while you measure its mass. An empty beaker has a mass of 31.

The bright-line spectrum of an element in the gaseous phase is produced as 1. protons move from lower energy states to higher energy states 2. protons move from higher energy states to lower energy states 3.

Which region of the sea is affected by changes in the tides?

If 22.5 L gasoline is drawn from a tank originally containing 65 L of gasoline, What is the volume of gasoline remains in the tank

Which of the following are thought to be rapidly rotating neutron stars with intense magnetic fields? Choose one answer. a. pulsarsb. white dwarfsc. black holesd. flare starse. accretion disks

A block of size 20m x 10 mx 5 m exerts a force of 30N. Calculate the maximum & minimum pressure exerted by the block on ground? hello yeah tell me the answer of this question

5. If the line on a speed-time graph is not horizontal, what does that tell you about its motion?

The circumference of the Earth is approximately 40,000 km. The Earth has a magnetic field that protects it from solar particle radiation. The major element comprising the solid inner core of the Earth is iron. The Earth is approximately 4.

A capacitor with the capacitance constant C has a charge of Q and a potential difference of V. If the charge is reduced to Q and the potential is increased to 2V, what is the new capacitance? 2c 4c