If the tube were filled with helium instead of air, how would your results change

Which of the following is a reversible physical change? a. burning coal b. boiling water c. chopping onions d. bread rising in an oven

Which formation is one feature of karst topography?

A wave has a period of 2 seconds and a wavelength of 4 meters calculate its frequency and speed

2. The nucleus holds two particles: a. proton and electron b. proton and neutron c. neutron and electron

The specific heat of copper is 0.39 j/g*degrees celcius how much heat is needed to raise the temperature of 1000.0 g of copper from 25.0 degrees celsius to 45.0 degrees celcius

A cylindrical metal can is to have no lid. It is to have a volume of 125π in3. What height minimizes the amount of metal used?

Which components of the atom have no charge? protons neutrons electrons none of the components have charges

An unknown solution has a pH of 8. How would you classify this solution? A) The substance is an acid. B) The substance is a base. C) There is not enough information to answer the question.

What is the most abundant element in the universe? A. helium B. hydrogen C. carbon

A bee flies at a constant rate of 5 ms until it notices a flower. It then comes to rest in 5 seconds. Find the acceleration of the bee if a = ΔvΔt