25. You lift a book from the floor to a bookshelf 1.0 m above the ground. How much power is used if the

upward force is 15.0 N and you do the work in 2.0?

Grace rides her bike at a constant speed of 6 miles per hour. How far can she travel in 2 1/2 hours?

How is chewing food both chemical and physical?

What is serve in volleyball?

Classify the health care system in the US. Is it market based or command based? Why?

Which of the following best describes a property of water? A. Requiring a low amount of heat to change temperature B. Being unable to make many solutions C. Remaining liquid over a wide temperature range D. Having low surface tension.

As stream velocity decrease, which factor will likely increase? A) erosion of the stream bank B) deposition of material in the stream C) amount of material carried downstream D) size of the particles carried downstream

What cells in the nervous signals travel through the nervous system

A mechanic pushes a 3.60 ✕ 103-kg car from rest to a speed of v, doing 5,130 j of work in the process. during this time, the car moves 21.0 m. neglecting friction between car and road, find v and the horizontal force exerted on the car.

Anika asks Eva to roll a basketball and then a bowling ball to her. Which requires more force to roll, and why?

Why does a buoyant force act on every object in a fluid? Pressure pushing up on the bottom of the object is greater than the pressure pushing down on the top.