What is the role of MnO2 in a dry cell?

What is latent heat? Group of answer choices Energy released when water evaporates. Energy hidden in water vapor in the air. Energy stored in rocks and ice. Energy absorbed or hidden when water evaporates. Energy given off by the Sun.

What are ph levels? Why are they important? What's there acceptable level/condition?

Suppose you are biking side by side with a friend. Write a short explanation that describes the motion of your friend? What information are you using to describe that motion?

The path an object takes as it revolves around another object is called an

What is the order of magnitude of the gravitational force between two 1.0 kilogram charges that are positioned 1.0 meter apart? (1) 11 (2) 2 (3) 1 (4) - 11

A 30-g bullet is fired with a horizontal velocity of 450 m/s and becomes embedded in block B, which has a mass of 3 kg. After the impact, block B slides on 30-kg carrier C until it impacts the end of the carrier.

11) Shifting with ease from one type of problem-solving strategy to another is called a) flexibility b) versatility c) originality d) openmindedness

A truck undergoes a constant acceleration of 2.0 meters/second2 on a highway that slopes upward at an angle of 30.0° to the horizontal. What is the magnitude of the horizontal component of the acceleration?

Why is there so much more carbon dioxide in the atmosphere of Venus than in that of Earth? Why so much more carbon dioxide than on Mars?

People have proposed driving motors with the earth's magnetic field. This is possible in principle, but the small field means that unrealistically large currents are needed to produce noticeable torques.