Hi, I need help with finishing these 3 questions, thank you!

1. Beta convinces Alpha to drag their ice-fishing shack to a new location by pulling it with ropes. Alpha applies a force of 150 N [175"] on one rope and Beta applies a force of 175 N [190*] on another rope. What is the net force applied to the shack by Alpha and Beta? Assume the ice is frictionless. Show all work. (6)6. A roofer pulls a 25.0 kg bundle of shingles up the side of a roof that has a 29.0' pitch. She applies a force to the shingles, counteracting the 18.5 N of friction, to accelerate the shingles at a rate of 0.50 mis'. Calculate the force she applied to the shingles. {4} 10. (2) When the astronaut enters the ISS (International Space Station), she is in "free fall,\" where the only force acting on her is the force of gravity applied by the Earth. What happens to her true weight and her apparent weight as she enters the ISS? Explain. (You may want to reference p. 227-228 of the textbook to help you.)