How much work must be done to accelerate an 8.5*10^5 kg train from a) 10m/s to 15m/s b) 15m/s to 20m/s and c) to an Initial stop of 20m/s

Scientists are working with a liquid that is made of only one type of atom. Which statements correctly describe this liquid? Check all that apply.

How much time does it take 9,560 joules of work with 860 watts of power

You throw a baseball horizontally, and Jill catches it. Neglect air resistance. The energy transformation that occurs during the catch is A) kinetic E ⇒ chemical E. B) kinetic E ⇒ thermal E. C) chemical E ⇒ kinetic E. D) thermal E ⇒ kinetic E.

When a child does not know how to react emotionally to a situation they will observe the emotional expressions of others. This is called Question 11 options: 1) self-awareness 2) behaviorism 3) humanism 4) social referencing

A student analyzes data of the motion of a planet as it orbits a star that is in deep space. The orbit of the planet is considered to be stable and does not change over time.

2. How is temperature related to kinetic energy?

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?