Calculate the mass of a gas with a density of 0.0065 g/cm3 and volume of 260cm3

In a vernier instrument the main scale is in 1/2 mm divisions .vernier is made by redividing 19 such divisions into 20 equal parts. calculate the least count of the instrument.

Which situation will have the highest resistance? a.long wire and high temperatureb.short wire and high temperaturec.long wire and cold temperaturedshort wire and low temperature

Explain earth's motion, using the terms "precession" and "rotation" in your answer.