In order for two objects to have the same temperature, they must a. be in thermal equilibrium.

b. be in thermal contact with each other.

c. have the same relative "hotness" or "coldness" when touched.

An empty rubber balloon has a mass of 0.0120 kg. The balloon is filled with helium at 0°C, 1 atm pressure, and a density of 0.179 kg/m3. The filled balloon has a radius of 0.500 m.

Explain how we were able to boil water at room temperature

Which electromagnetic waves have the highest frequencies in the electromagnetic spectrum? A. gamma rays B. microwaves C. radio waves D. ultraviolet radiation

What is the sequence of events for the evolution of the atmosphere in the correct order

What are the 3 rocks in the rock cycle?

A roller coaster track is a good example of the law of conservation of energy. Use this law to explain these facts about a roller coaster track. a. The largest hill for a roller coaster track is the first hill on the track.

Which statement about the spectrum of light that emerges from a prism is true? A. High-frequency colors bend more than low-frequency colors. B. High-frequency colors bend less than low-frequency colors. C.

What kind of process can create "rogue" waves? a. Constructive interference c. Refraction b. Destructive interference d. Standing waves

What are constellations? 1. Apparent groupings of stars and planets visible on a given evening 2. Groups of galaxies gravitationally bound and close together in the sky 3.

What is pitch? give an example of a high pitch sound a low pitch sound