Which of these actions would decrease heat transfer between two objects?
increasing the temperature of the warmer object
increasing the area of their contact
reducing the thermal energy of the cooler object
reducing the time of their contact

The correct options are

When two objects are in contact with one another, heat is transferred from the hotter object to the cooler object which is called convection and this process  depends upon certain factors like the amount of temperature and the time of contact. When the area between two objects is increased the medium carry less amount of heat to the second object and most of the heat is lost in the way, Similarly when the time of contact is reduced then the same phenomenon occurs again and most of the energy is lost in air.

no theres only one correct answer and its D

a and c

c is 100% but i am confused in a

the small 0.38-kg slider is known to move from position a to position b along the vertical-plane slot. determine (a) the work done on the body by its weight and (b) the work done on the body by the spring. the distance r = 0.70 m, the spring modulus k = 154 n/m, and the unstretched length of the spring is 0.53 m

explanation:

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