Which of the following gases is the heaviest?

O2

CH4

CO2

Cl2

If a person can comfortably carry 20 kg (44 lbs) and gold has a density of 19.6 g/cm3, what is the volume of the largest piece of solid gold a person can carry

13) A branch falling from a tree is to gravity as a car driving on the road is to A) a driver's foot off of the accelerator, coasting. B) a driver's foot off the accelerator and on the break pedal.

Consider a standing wave in a one dimensional ideal medium of length "D" (like a vibrating string). a) how many vibration modes are possible with wavelengths between D/10 and D/20? b) how many are possible with wavelengths between 10D and 20D?

Which of the following is true? A. The Earth and Moon both exert a gravitational force on each other. B. The Moon exerts a gravitational force on the Earth, but the Earth does not exert a gravitational force on the Moon. C.

What is the specific heat of lead if it takes 96J to raise the temperature of a 75g block by 10oC?

A girl that has a mass of 55kg is standing on a floor, how much supporting force does the floor have?

What amount of temperature do you need to make a metamorphic rock?

What is the current hypothesis on how the Earth was formed?

a 7.3kg gallon paint can is lifted 1.78 meters vertically to a shelf. what is the change potential energy of the paint can

How does wave energy impact the erosion of a rock?