John is going to the planet Fhloston and he is taking his dog with him. The acceleration due to gravity on Fhloston is 20 m/s2. If Johns dog weighed 140 N on Earth, how much will it weigh on Fhloston? a
About 7 N
b
About 2800 N
c
About 285 N
d
About 69 N
What is the area under an acceleration-time graph equal to?

First answer marked as brainiest which is the correct equation describing the first law of thermodynamics? a) when the internal energy of a system changes, it equals the amount of heat added plus the work done. b) when work is done by the piston, it is equal to the heat added plus the change in internal energy of the system. c) when heat is added to the system, it is equal to the amount of work done by the piston plus the change in internal energy of the system.

The index of refraction of the oil is 1.20. what is the minimum thickness t of the oil slick at that spot?

Which type of heating system is used to heat many buildings from a central location?