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2 years ago

NEED HELP!!! IF YOU ANSWER ALL QUESTIONS I WILL GIVE YOU BRAINEST!!!!! 15 POINTS!!!!

Physics

2 answers:

SVETLANKA909090 [29]2 years ago

8 0

Answer: A, D, A

Explanation:

marissa [1.9K]2 years ago

8 0

Answer:

1. D

2. A

3. A

Explanation:

This is what i think. If it is not right, I am sorry. Hopefully, this will help you!

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A string is stretched by two equal and opposite forces F newton each then the tension in sting is?

Arlecino [84]

Answer: The tension in the string is zero

Explanation:

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3 years ago

Adita lifts a book from the floor, carries it across the room, and places it on a high shelf. When is Adita doing work on the bo

noname [10]

She does work from the moment she touches the book until she lets it go. Work is anything that requires energy. Therefore, she is working as she picks up the book, carries it, and when she is lifting it onto the shelf.

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2 years ago

Read 2 more answers

Which of the following elements is the most chemically reactive?

ivolga24 [154]

Answer:

B) Fluorine

Explanation:

The most reactive element is fluorine, the first element in the halogen group. The most reactive metal is francium, the last alkali metal (and most expensive element).

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2 years ago

High speed stroboscopic photographs show that the head of a 244 g golf club is traveling at 57.6 m/s just before it strikes a 45

almond37 [142]

Answer:

The speed will be "1.06 m/s".

Explanation:

The given values are:

Momentum,

m1 = 244 g

m2 = 45.2 g

On applying momentum conservation ,

Let v2 become the final golf's speed.

From Momentum Conservation

⇒ $Total \ initial \ momentum = Total \ final \ momentum$

⇒ $m1\times u1 + m2\times u2 = m1\times v1 + m2\times v2$

On putting the estimated values, we get

⇒ $0.244\times 57.6+0=0.244\times 39.9+45.2\times v2$

⇒ $57.844+0=9.7356+45.2\times v2$

⇒ $48.1084=45.2\times v2$

⇒ $v2=\frac{48.1084}{45.2}$

⇒ $v2=1.06 \ m/s$

6 0

3 years ago

Which figure represents the electric field lines of two negative point charges?<br> Help

Yuliya22 [10]

Answer:

The question is incomplete because the options are not given. We'll solve this question with the options.

There are two properties of negative charges which we have to consider to find the figure of its electrical field.

Firstly, for a negative charge, the electrical field lines are always directed radially outwards and they don't intersect.

Secondly, we know that similar charges repel each other, so there will be no electrical field present directly between these two negative charges. Electrical field line will be present between two charges only when there is a force of attraction.

Taking both of these facts into consideration, the electrical field line between two negatives is represented by the figure below.

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3 years ago