Beet juice is added to a unknown solution and changes color from red to purple. Curry powder, added to the same solution, turns a deep red color. What can you tell about the hydrogen/hydroxide ion concentration of the unknown liquid?

You find out that it takes 2 sec. for the swing to complete one cycle. what is the swing's period and frequency?

Explain the theory of relativity in a small sentence

What causes differences in air temperatures at different altitudes? a mainly the way gases radiate light b mainly the way gases absorb solar energy c mainly the way moisture moves through the atmosphere d mainly the way air radiates solar energy

An aluminum wing on a passenger jet is 30 m long when its temperature is 27 C. At what temperature would the wing be 0.03 shorter?

True or False? Heat energy moves from cold areas to warm areas.

Identify the scenario below as to whether they increase, decrease, or not change the frequency in which a string vibrates and thus change its pitch. Assume that no other changes are happening. 1. Tightening a string for greater tension 2.

Explain what each of the following scientists contribute to the atomic theory

A fully charged parallel-plate capacitor remains connected to a battery while a dielectric is slid between the plates. Do the following quantities increase, decrease, or stay the same? Select one or more: a. delta V increases b.

Energy is observed in two basic forms: potential and kinetic. Which of the following correctly matches these forms with a source of energy? a. the heat released from a living organism: potential energy b.

What should you do when operating a boat in large waves and high wind?