Which of the following best demonstrates potential energy? rolling ball, a moving car, running boy or sleeping cat?

What happens to the atomic number as you move across a period

The Great Barrier Reef faces environmental disaster due to A. parasites. B. rising sea levels. C. scientific study. D. tourism.

How does the body maintain homeostasis when its inner temperature becomes higher than the normal body temperature? by shivering by sweating by producing goose bumps

When starting a foot race, a 70.0-kg sprinter exerts an average force of 650 n backward on the ground for 0.800 s. what is his final speed?

An object with a mass of 78kg is lifted through a height of 6 meters. How much work is done?

Based on the assumption that a liquid conducting core and rapid rotation are both required for a magnetic field to operate, which terrestrial planets would you expect to have magnetic fields?

At a temperature of 320K, the gas in a cylinder has a volume of 40.0 liters. If the volume of the gas is decreased to 20.0 liters, what must the temperature be for the gas pressure to remain constant? A. 160 K B. 273 K C. 560 K D. 140 K

It takes a car five seconds to speed up from 20 m/s to 23 m/s. what is the acceleration of the car?

Which of the following is the largest disadvantage of hydropower

Two students standing apart in a classroom have a gravitational force of attraction between them of 3.20 x 10-8 N. If one student has a mass of 50.0 kg and the other has a mass of 60.0 kg, what is the distance between the students?