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lara [203]
3 years ago
7

22. The mass of a brick is 5 kg and it is fired into the air at 100 m/s. Thinking

Physics
1 answer:
kirza4 [7]3 years ago
8 0

Answer:

?

Explanation:

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HURRY!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
sergeinik [125]

Answer:

the sides of the wedge are inclined.

Explanation:

The wedge is a triangular simple machine with a blunt face and two inclined faces. The distribution of forces in a wedge is because the sides of the wedge are inclined.

4 0
3 years ago
You are given an unknown liquid and asked to determine its identity. You can measure only one physical property. You decide to h
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B boiling point because you used heat and it turned to vapor so it was boiled
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3 years ago
what factors limit the accuracy of a potentiometer and what was the objective of reversing the terminals of the cell​
cricket20 [7]

Explanation:

<em>"The accuracy of a potentiometer can be increased by decreasing the potential gradient across the potentiometer wire, and this can be achieved by increasing the length"</em>

<em />

<u>The factors that are affecting/limiting the accuracy of the potentiometer are: </u>

  1. The specific resistance of the material of the potentiometer wire.
  2. The potential gradient
  3. The current passing through the potentiometer wire.
  4. Area of a cross-section of the wire
  5. Internal temperature.

     

<u>The objective of reversing the terminals of the cell​</u>

If the jockey of the potentiometer is pressed for a long time, joule heating sets in, so that reversing the terminals of the potentiometer will prevent the resistance due to joule heat from being added to the measured resistance, ultimately preventing unwanted resistance

7 0
3 years ago
I don’t know where each one goes
Usimov [2.4K]
I classified them by numbers 1 to 8
Force: #s 2,4,5,67
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That’s it what I would say its the answer
3 0
3 years ago
A battleship that is 6.00×107kg and is originally at rest fires a 1100-kg artillery shell horizontally with a velocity of 575 m/
mel-nik [20]

Answer:

Part a)

v = 0.0105 m/s

Part b)

E = 1.82 \times 10^8 J

Explanation:

As per momentum conservation we know that

P_1 = P_2

P_1 = m_1 v_1

P_2 = m_2v_2

here we know

m_1 = 6.00 \times 10^7 kg

v_1 =  ?

m_2 = 1100 kg

v_2 = 575 m/s

Part a)

now from above expression we can say

m_1v_1 = m_2v_2

(6.00 \times 10^7)(v) = (1100)(575)

v = 0.0105 m/s

Part b)

Now increase in the internal energy of the system

E = \frac{1}{2}m_1v_1^2 + \frac{1}{2}m_2v_2^2

E = \frac{1}{2}(6.00 \times 10^7)(0.0105)^2 + \frac{1}{2}(1100)(575^2)

E = 1.82 \times 10^8 J

7 0
3 years ago
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