One of the greatest difficulties with setting up the baby bouncer is determining the right height above the floor so that the child can push off and bounce. knowledge of physics can be really here. if the spring constant k=5.0×102n/m, the baby has a mass m=11kg, and the baby's legs reach a distance d=0.15m from the bouncer, what should be the height h of the "empty" bouncer above the floor?

10 newton object is placed 3 meters from the fulcrum. at what distance on the other side would you need to place a 15 newton object to balance the lever? show your work!

James is trying to prove newton's 2nd law of motion. he tries to move four different objects with different masses, shapes, and sizes from point a to point b. the objects are a toy car, a car, a refrigerator, and a kitchen table. after some experimentation, he finds that force is dependent on the mass of the object, rather than it's size or shape. the object that takes the most force to move is the

At an oceanside nuclear power plant, seawater is used as part of the cooling system. this raises the temperature of the water that is discharged back into the ocean. the amount that the water temperature is raised has a uniform distribution over the interval from 10° to 25° c. what is the standard deviation of the temperature increase?