Aspacecraft left earth to collect soil samples from mars. which statement is true about the strength of earth’s gravity on the moving spacecraft?

- it decreases.
- it increases.
- it remains the same.
- it doesn’t affect the spacecraft.

Aspecimen of oil having an initial volume of 580cm^3 is subjected to a pressure increase of 4.0 mpa, and the volume is found to decrease by 0.40 cm^3. (a) what is the bulk modulus of the material? (b) what is the compressibility of the material?

Automobile fuel efficiency is often measured in miles that the car can be driven per gallon of fuel (mpg). heavier cars tend to have lower fuel efficiencies (lower mpg ratings). which variable (weight or fuel efficiency) is most naturally considered the explanatory (predictor) variable in this context?

Individuals who live below the poverty line get seriously ill more often than those who do not what could be the hidden variable in this situation?