How many significant figures do we have 0.2

How much work is done lifting a 9.10 kg box straight up onto a shelf that is 1.80 m high?

If the force on an object is in the negative direction, the work it does on the object must be [2 points a) negative. b) positive c) the work could be either positive or negative, depending on the direction the object moves

Atelevision set that has been running for a while heats up even the air around it. which two laws of thermodynamics could be used to analyze this scenario