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Ierofanga [76]
3 years ago
14

What are two main purposes for using repetition when conducting experiments?

Physics
2 answers:
Luda [366]3 years ago
8 0

Answer:

Explanation:

The experiments are the scientific procedures which are performed to analyze and determine the cause of natural phenomena. The repetition is a process which involves redoing the experimental procedure or a particular step to yield results which will be useful for framing the results.

The two main purposes for using the repetition in experiments are:

1. The similarities in the data obtain after every trial can suggest the correct methodology has been used.

2. The data obtain after repetition will be reliable, accurate and acceptable for framing the results.  

sashaice [31]3 years ago
7 0
Reducing mistakes and saving time
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Leya [2.2K]

<u>Solution and Explanation:</u>

The following calculation is made in order to find out the area and the final velocity vector.

Using the given information and the data in the question,  

m1u1 + m2u2 = (m1 + m2)  multiply with v

40000 multiply with ( -20i ) + 60000 multiply with ( 10j ) = 100000 multiply with v

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3 years ago
A 2000 kg boat drifts along the waves at a velocity of 3 m/s. What is the kinetic energy of the boat?
galina1969 [7]

Answer:

25 kJ

Explanation:

Ke = mv²/2

= 2000·25/2

= 1000·25

= 25000 J

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3 years ago
The depth of a pond is 1.5m. Calculate the pressure caused by the water at the bottom of the pond ?​?​
andre [41]

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2 years ago
A 5.30 g bullet moving at 963 m/s strikes a 610 g wooden block at rest on a frictionless surface. The bullet emerges, traveling
Tems11 [23]

Answer:

a) V_{wf} = 4.67m/s

b) V = 8.29 m/s

Explanation:

Givens:

The bullet is 5.30g moving at 963m/s and its speed reduced to 426m/s. The wooden block is 610g.

a) From conservation of linear momentum

Pi = Pf

m_{b}V{b_{i} }  + V_{wi}  = m_{w} V_{wf} + m_{b}V_{bf}

where m_{b},V{b_{i} are the mass and the initial velocity of the bullet, m_{w} and V_{wi} are the mass and the initial velocity of the wooden block, and V_{wf} and V_{bf} are the final velocities of the wooden block and the bullet

The wooden block is initial at rest (V_{wi} = 0) this yields

m_{b}V{b_{i} }  = m_{w} V_{wf} + m_{b}V_{bf}

By solving for V_{wf} adn substitute the givens

V_{wf} = \frac{m_{b}V_{bi} - m_{b} V_{bf}    }{m_{W} }

= \frac{5.3(g)(963(m/s)-426(m/s) }{610(g)}

V_{wf} = 4.67m/s

b) The center of mass speed is defined as

V = \frac{m_{b} }{m_{b}+m_{w} } V_{bi}

substituting:

V = \frac{5.3(g)}{5.3(g)+610(g)} X 963(m/s)

V = 8.29 m/s

7 0
3 years ago
During which phase of the moon may a solar eclipse occur?
alex41 [277]

Answer:

New moon

Explanation:

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4 years ago
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