Answer:
A.Moving electric charges (electrons in a circuit) creates a magnetic field and
a magnetic field can cause an electric charge to move (electricity).
Explanation:
The key difference between a bomb calorimeter and a coffee cup calorimeter is high temperature.
<h3>
What is bomb calorimeter?</h3>
A bomb calorimeter is an apparatus that can measure heats of combustion, used in various applications such as calculating the calorific value of foods and fuels.
<h3>What is coffee cup calorimeter?</h3>
A coffee cup calorimeter is a cup used to provide insulation when materials are mixed inside of it.
<h3>Difference between the two calorimeter</h3>
- The coffee cup calorimeter can't be used for high-temperature reactions, either, because they would melt the cup.
- A bomb calorimeter is used to measure heat flows for gases and high-temperature reactions
Learn more about calorimeter here: brainly.com/question/1407669
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Explanation:
Given that,
A hockey puck moves 28 m southward then 14 m northward and finally 4 m southward distance.
The total path covered is called distance and the shortest path covered is called displacement.
Distance = 28 m + 14 m + 4 m
Distance = 46 m
Let the nothward direction is positive y axis and southward direction is negative y axis.
Displacement is equal to the difference of final position and the initial position.
Displacement =-28 m - (-4 m)
= -24 m
The magnitude of displacement is in south direction.
Answer:
False
Explanation:
Circuit and packet switching refers to systems through which information or data is transmitted, only that great features in circuit switching are a dedicated channel
The <u>packet switching</u> data or information that is transmitted is previously assembled into packets. Each of the packages is transmitted individually and will be able to follow different routes to reach the destination. As soon as they do, those packages are re-assembled.
Packet switching is more efficient than circuit switching and is also more robust for data that can be sent with transmission delay, that is, it is not real-time, such as on a web page, email, files.
<u>Circuit switching</u> is a type of communication which is established or created through a dedicated channel that is known as a circuit, the duration of a session. As soon as that session is finished (such as a telephone call), the channel will be released and therefore can be used by another pair of users.
