Please help me with this question

Apulley system is used to lift a 2,000 newton engine up a distance of 3 meters. the operator must apply a force of 250 newtons to the chain of the pulley system to lift the motor. to lift the engine 3 meters, the operator must pull a total of 30 meters of chain through the pulley system. what is the value of di?

Carmen is load furniture and boxes onto a moving truck. she picks up boxes of her things, places them on a cart, and pushes the cart to the moving van. which term best describes the type of force carmen uses? a. contact b. friction c. gravity d. noncontact

Making a water cycle model 1. add soil to a plastic cup. 2. place an ice cube on the soil. 3. use plastic wrap to seal the top of the cup. 4. place the cup in a location with direct sunlight. which statement is the best comparison between earth’s water cycle and the model described? a) the water evaporates down into the model’s soil, instead of into the air. b) the ice cube in the model represents condensation in earth’s water cycle. c) when the ice melts, it will model infiltration as it absorbs into the soil. d) condensation occurs in the model’s soil, like it occurs in clouds for earth.