B. electric and magnetic fields.
Explanation:
This is a wave diagram of an electromagnetic wave showing vibration of both electric and magnetic fields.
An electromagnetic wave is made up of electric and magnetic fields vibrating.
- These waves are deflected neither by electric fields nor magnetic fields.
- The electromagnetic field is made up of a broad range of radiations.
- Visible light is an electromagnetic radiation.
- The magnetic and electric fields are oriented perpendicularly and they are transverse waves.
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Explanation:
Many people are under the impression the phases originate from the shadow cast on the Moon by Earth. Some think the Moon is changing shape because of clouds. Alternatively, the movement of the Moon based only on its position in relation to Earth and the Sun. The Moon doesn't really create its own light, it actually reflects the light of the Sun, as all the planets do.
Answer:
1. Which of the following actions is permissible when you are graphically adding one vector to another:
Explanation:
: move the vector, rotate the vector, change the vector's length?
(1 cal/g °C) x (4000 g) x (45 - 25)°C = 80000 cal = 80 kcal. So the answer is 80 kcal .
Answer:
A. Hydrogen bonding between water molecules.
Explanation:
Specific heat capacity of water can be defined as the amount of heat a gram of water must lose or absorb in order to change its temperature by a degree Celsius. It is measured in Joules per kilogram per degree Celsius (J/kg°C). Generally, the specific heat capacity of water is 4.182J/kg°C and is the highest among liquids.
Cohesion is a property of water and typically refers to the attraction between molecules of water which holds them together.
The high specific heat and cohesive forces characteristic of water are a result of hydrogen bonding between water molecules. A hydrogen bond is formed in water due to its polarity (opposite charges between water molecules), which causes each water molecule to attract other water molecules. An atom of hydrogen of each water molecule bonds with the electron lone pair on atom of oxygen of a close water molecule.