Please if you know how to solve it

Q.1 A man pulls box with a force of 60 N making an angle of 20o with the ground.

( a ) Determine the effective value of the pulling force to move the box along the ground.

( b ) Determine the effective value of the pulling force to lift the box vertically.

An engine undergoes a cycle as shown in the diagram. during a complete cycle the work done by the gas is 28.5×103 j and the energy transferred thermally out is 99.4×103 j. there are 1.5×1024 gas molecules and they have three active degrees of freedom. 6. (6 pts) during which process(es) is energy transferred thermally into the gas? a. 1→2 b. 2→3 c. 4→1 d. 1→2 and 4→1 e. none of the above