Which of these events indicate that a chemical reaction might have occurred?

What are three problems that can result from poor soil management? Erosion Nutrient depletion Development Desertification

NASA launches a satellite into orbit at a height above the surface of the Earth equal to the Earth's mean radius. The mass of the satellite is 780 kg. (Assume the Earth's mass is 5.97 1024 kg and its radius is 6.38 106 m.

If a car's mass is 439 kg, what is its weight on earth? A. 4390 N B. 4300 N C. 4360 N D. 4350 N

Example of hallucinogens

A space shuttle orbits Earth at a speed of 21,000 km/hr. How far does it go in 3.5 hrs?

How far into editing our human genes?

Which electromagnetic wave has the shortest wavelength? (A. Radio waves b. X-rays c. infrared rays or d. Visible light)

Which mixture can be separated based on differences in particle size of the components

What happens in an open circuit

When analyzing forces, it is allowable to break the motion and forces into horizontal and vertical components.