Which describes the changes in visible light moving from red to violet?

Which example best

Snezhnost [94]

Answer:

A

Explanation:

paddling a canoe to make the boat move

7 0

3 years ago

Calculate the angular velocity of a clocks second hand, its minute hand, and its hour hand. State in Rad/s. What is its angular

fenix001 [56]

Second hand:

1 rev per minute = (2π radians/minute) x (1 min/60sec) = π/30 rad/sec

Minute hand:

1 rev per hour = (2π radians/hour) x (1 hr/3600 sec) = π/1800 rad/sec

Hour hand:

1 rev per 12 hours = (2π rad/12 hr) x (1 hr/3600 sec) = π/21,600 rad/sec

As long as the clock is in good working order, and the hands are turning steadily at their normal rate, there is no angular acceleration.

8 0

3 years ago

PLZ HELP!!! *best answer gets brainliest*

Doss [256]

Batteries convert chemical energy into electrical energy. It is able to store electrical energy in the form of chemical energy.
Have you ever seen the two different sides of a battery? One side is often labelled with a positive sign, and the other with a negative sign. Inside the battery are four cells where two processes take place. One process uses electrons, and the other creates electrons. When the electrons flow, it creates electricity.
Drums convert mechanical energy into sound energy.
When a musician bangs his/her drumstick on the drum, the motion makes a sound. This movement turned motion into sound.

3 0

4 years ago

It is important to understand the differences between chemical and physical changes. Chemical changes result in new substances,

sergiy2304 [10]

Explanation:

Other characteristics of these changes are:

Physical changes are easily reversible but chemical changes are not.

Physical changes involves no change in mass like chemical changes.

Physical changes require little energy unlike chemical changes.

Water turns to steam when boiled over a Bunsen burner Physical change

This is a physical change of state. It is called evaporation. Here, hydrogen bonds between each water molecules are broken and they turn to gases in steam phase.

H₂O $_{l}$ → H₂O $_{g}$

Carbon combines with oxygen to form carbon dioxide gas Chemical change

This is a typical chemical change":

C + O₂ → CO₂

A new product is formed and this reaction is not easily reversible.

Water breaks down into hydrogen and oxygen gases. Chemical change

This is also a chemical change in which new products are formed:

H₂O → H₂ + O₂

Limestone breaks down into lime and carbon dioxide when heated Chemical change

This is a chemical change as new product forms:

CaCO₃ → CaO + CO₂

Learn more:

Chemical change brainly.com/question/9388643

#learnwithBrainly

5 0

3 years ago

1.Compare how waves are used to send information.

jeyben [28]

Answer:

1:Radio waves are used to carry satellite signals. These waves travel at 300,000 km/s (the speed of light).

2:The standard methods of communication are speaking or writing by a sender and listening or reading the receiver. Most communication is oral, with one party speaking and others listening. ... A mixed message occurs when a person's words communicate one message, while nonverbally, he or she is communicating something else.

3: Today means of communication has increased such a lot that we can receive or send messages from or to far off places. Various means of communication which we use in the modern world are Posts and Telegraphs, Telephone, Radio and Television, Telex, Fax, Pagers, Email, Newspapers and cinema.

8 0

3 years ago