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____ [38]
3 years ago
6

What is the direction of the force on a positive charge when passing through a magnetic field as indicated in this diagram? Expl

ain how you got
your answer.
Physics
1 answer:
maria [59]3 years ago
3 0

Answer:

The direction of the magnetic force on a moving charge is perpendicular to the plane formed by v and B and follows right hand rule–1 (RHR-1)

Explanation:

hope this helps

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A student notices that a reaction takes place faster when the temperature is higher. Which best explains why this happens?
Pavel [41]

The reason why the reaction takes place faster when the temperature is higher is that the collision of particles of the object increases. In order to have a faster reaction, you would need the particles of the object to get excited and increase its collision to other particles. This can be achieved through increasing the temperature. 

8 0
3 years ago
Explain how sharpening a knife changes is MA (mechanical advantage).
stepladder [879]

Answer:

Sharpening a knife reduces it's height as a wedge thus giving it more efficiency.

Explanation:

Mechanical advantage refers to the degree or quantity to which a force is increased or amplified by using a tool or a machine.

Mechanical Advantage can be calculated as follows:

Lenght of Incline (LI) / Height of Incline (HI)

Assume I have constructed a hedge with an inclination that run 10 meters from point x to point y (which is the back of a truck. Point y to the floor is 5 meters.

If   LI = 10m and

HI= 5m

The mechanical advantage is given as 10/5 = 2

The angle of incline is also called the effort distance. From our calculations above, by sacrificing horizontal movement, I reduced the amount of effort it would have cost to lift up that object from ground up -  a distance of 5 meters.

Think of a knife as a form of a similar wedge.

The more a knife is sharpening of a knife further reduces its angle of elevation. Thats why it becomes more efficient to use, hence our mechanical advantage.

Cheers

7 0
3 years ago
Help me pls. will give brainliest
Fofino [41]

Answer:

B: Relay

Explanation:

Out of all the options, the only device that relies upon the magnetic field of an electric current.

The principle relies upon the principle of electro magnetic attraction whereby when the circuit detects a faulty current, it makes the electromagnetic field to become energized which in turn produces the temporary magnetic field. This magnetic field then moves the relay armature which is used in opening or closing the connections.

4 0
3 years ago
3. Based on what you learned in this lab, describe how the earth’s surface is heated by the sun’s radiation.
Ymorist [56]

Answer:

I don't know

Explanation:

cause we don't know which lab you are talking about

5 0
3 years ago
Read 2 more answers
20 points!!!
rodikova [14]
Heart Rate can change depending on the person movement. The more stress the more the heart pump
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