Why did the potassium permanganate crystals start to dissolve in water without being stirred or shaken

Echolocation is an acoustic principle in which some wildlife use resonance to find food at night. Question 25 options: True False

A 1,000 kg car has 50,000 joules of kinetic energy. What is it's speed

Which is the of these their statements correctly describes a key difference between aerobic activity and anaerobic activity

Solve the following automotive-services problem. Voltage = 220 v Current = 4 amps Resistance =

Landing with a speed of 81.9 m/s, and traveling due south, a jet comes to rest in 949m. Assuming the jet slows with constant acceleration, find the magnitude and direction of its acceleration.

The equation e = mc2 relates mass and a. energy b. force c. work d. gravity

What should a scientist do to use scientific methods for determining the relative age of Earth's rocks? A be biased in opinion B disregard views of others C use creative ideas D prove that methods are non-testable

If a sample of gas is heated at a constant pressure what will happen to the volume of the gas

1. What is the speed of sound in air that has a temperature of 90.0 °C?

What effect does a doubling of the mass have upon the acceleration of the object? Be quantitative.