To hear a train approaching from far away, why is it more convenient to put the ear to the track?

The pressure inside a hydrogen-filled container was 2.10 atm at 21 ∘ c. what would the pressure be if the container was heated to 85 ∘ c? express your answer with the appropriate units.

Each time you dumped the pennies, one half-life passed; it has been shown that the half-life for this radioactive isotope is 20 years In the year 2000, an archaeology team unearths pottery and is using this isotope for radiometric dating to place

What are earthquakes usually associated with?

As you add additional light bulbs in series, which graph represents the total voltage across the light bulbs?

What is the acceleration experienced by a car that takes 10 s to reach 27 m/s from rest?

What force would be needed to make a 10kg bowling ball accelerate down the alleyway with an acceleration of 3m/s2

If traveling at equal velocities, which object would have the most momentum

Which of the following happens when a material undergoes a phase change? a. The temperature changes. b. Heat flows into or out of the material. c. The chemical composition changes. d. The molecules break apart into atoms.

Friction between solids can be most accurately defined as the force that opposes the sliding motion of two surfaces that are touching each other. A. True B. False

1. For a reaction to occur, energy must be to break chemical bonds. O A released OB converted OC absorbed