15. A 65 kg person is out riding their bike in a circle with a radius of 22.3 m. In order to stay on the road they need a centripetal forceof 186.5 N. A. What must be their acceleration? [2.87 m/sB. How fast must they be traveling? [8.0 m/s]C. What is their period? [17.5 s]D. How many laps will they make in 10 minutes? [34.25

Mixing salt in water is an example of physical change

Auniform bridge, 20 m long and weighing 40000 n is supported by two pillars located 3.0 m from each end. if a 19600 n car is parked 8.0 m from one end of the bridge, how much force does each pillar exert?

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.