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sergeinik [125]
3 years ago
14

Explain why it is important that there is only one possible explanation for experimental data.

Physics
1 answer:
Dimas [21]3 years ago
3 0
It is very important that there is only one possible explanation for experimental data because If more than one explanation is possible, a conclusion about of them cannot be reliable.

hope this helps
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A person is standing on and facing the front of a stationary skateboard while holding a construction brick. The mass of the pers
jek_recluse [69]

Answer:

0.74 m/s

Explanation:

From the question,

We apply the law of conservation of momentum,

Total momentum before collision = Total momentum after collision.

Since the skateboard, the person and the brick where stationary, therefore, the total momentum before collision is 0

0 = Total momentum after collision

(m+M)V + m'v = 0

Where m = mass of the  skateboard, M = mass of the person, m' = mass of the brick, V = recoil velocity of the person and the skateboard, v =  velocity of the brick

make V the subject of the equation above

V = -m'v/(m+M)................... Equation 1

Given: m = 4.10 kg, M = 68.0 kg, m' = 2.50 kg, v = 21.0 m/s.

Substitute these values into equation 1

V = -(2.5×21)/(68+2.5)

V = 52.50/70.5

V = 0.74 m/s

4 0
3 years ago
A rocket travels 1.3 km in 62 ms. What is its average speed in m⋅s−1? Do not give your answer in scientific notation. The answer
hjlf

Answer:

Average speed = 0.35 m/s

Explanation:

Given the following data;

Distance = 1.3 Km

Time = 62 minutes

To find the average speed in m/s;

First of all, we would convert the quantities to their standard unit (S.I) of measurement;

Conversion:

1.3 kilometres to meters = 1.3 * 1000 = 1300 meters

For time;

1 minute = 60 seconds

62 minutes = X

Cross-multiplying, we have;

X = 62 * 60

X = 3720 seconds

Now, we can calculate the average speed in m/s using the formula;

Speed = \frac {distance}{time}

Speed = \frac {1300}{3720}

Average speed = 0.35 m/s

7 0
3 years ago
30 points, brainiest, high school physics problem, please help with explanations.
Ymorist [56]

Answer:

I think the answer is C too

4 0
3 years ago
Which advantage of stored digital data could be a disadvantage in some
Lesechka [4]

Answer:B- All types of information can be pressed on to receivers of the data.

Explanation: hope this helps

4 0
3 years ago
a 6.7kg object moves with a velocity of 8 m/s. whats its kinetic energy?(A)26.8J(B)214.4J(C)167.5J(D)53.6J
Ne4ueva [31]
The answer in (B)214.4J


I hope this helped have a nice day!
6 0
4 years ago
Read 2 more answers
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