During science lab, some students added small pieces of magnesium ribbon to 10 mL of hydrochloric acid. They noticed that bubbles formed, the test tube got hot, and the magnesium disappeared.

A uniform, thin, solid door has height 2.20 m, width 0.870 m, and mass 23.0 kg. (a) find its moment of inertia for rotation on its hinges. (b) is any piece of data unnecessary

Which of the following atoms tend to gain two electrons to form a 2-anion

Unlike mechanical waves, electromagnetic waves do not require to travel through.

An object at rest on a flat, horizontal surface explodes into two fragments, one seven times as massive as the other. the heavier fragment slides 6.70 m before stopping. how far does the lighter fragment slide?

Which type of multi-load circuit can turn off one load without affecting the other loads? A. a line circuit B. a parallel circuit C. a series circuit D. a magnetic circuit

D. protons and neutrons have charges of the same magnitude but opposite sign. true or false

Explain the roles of products, reactants, and limiting reactant in chemical reaction.

Increasing the concentration and increasing the temperature both increase reaction rates based on which physical phenomenon? 1. increasing the frequency of molecular collisions 2. decreasing the activation energy 3.

How to solve for h using the formula eg=mgh?

All questions on heat especially on thermal dynamics