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Elza [17]
3 years ago
5

Water flows through a 1-cm diameter pipe connected to a 1/2-cm diameter pipe. compared to the speed of the water in the 1-cm pip

e, the speed in the 1/2-cm pipe is:
Physics
1 answer:
AlexFokin [52]3 years ago
6 0
<span>The speed of water in pipe is given by: V=0.408(Q/D^2) V=speed Q=flow rate D=diameter of pipe Hence, the speed of the water is inversely proportional to square of diameter If the speed of water through 1-cm diameter is V Then, speed of water through 0.5 cm diameter is =V/[(1/2)^2)] =V/(1/4) =4V Hence, compared to the speed of water in 1 cm pipe, the speed in the 1/2 cm pipe is four times.</span>
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The practice of science can answer only scientific questions. And scientific
iragen [17]

Evidence might be used to demonstrate their falsity. must apply to all potential solutions to a scientific topic.Option A is correct.

<h3>What is a Scientific hypothesis?</h3>

A scientific hypothesis is the main element in the scientific method and experiment.

It is said that a hypothesis is a scientific hypothesis. The majority must agree on it, or it must be done after thorough experimentation.

Only scientific inquiries can have their answers provided by scientific endeavor. Scientific concerns have an impact on the research's design as well.

Evidence might be used to demonstrate their falsity. must apply to all potential solutions to a scientific question.

Hence option A is correct.

To learn more about the scientific hypothesis refer;

brainly.com/question/2681563

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6 0
2 years ago
Write down at least 3 equations as you solve them
Step2247 [10]

Answer:

3+7=          7x3=                                21➗7=          

Explanation:

3+7= 10              7 8 9 10

7x3= 21                  7 14 21

21➗7=3        21 14 7

                 mark me brainliest                      please

4 0
2 years ago
If the period of a wave is 15 seconds, how many wavelengths pass a certain point in 2 minutes?
denpristay [2]
Hello
The period of a wave is the time it takes between two complete oscillations of the wave itself, i.e. it is the time that occurs between two consecutive wavelengths. Therefore, if we want to calculate how many wavelengths pass a certain point in t=2~min=120~s, we need to divide the total time for the period of the wave, T:
N= \frac{t}{T}= \frac{120~s}{15~s}=8
So, the answer is 8 wavelengths.
3 0
4 years ago
Which force best represents Fg?
givi [52]

The weight of a barbell acting on a weightlifter in 80 N represents Fg.

<u>Explanation:</u>

Force exerted due to earth's gravity is represented as Fg. The gravitational pull is experienced by the mass of object has some force attached to by it which is called as force due to gravity.

The force is dependent upon the mass of the object experiencing the force. Hence the weight of a barbell acting on a weightlifter 80 N is the best example for Fg.

5 0
3 years ago
What is the average power developed by a motor as it lifts a 400.-kilogram mass at constant speed through a vertical distance of
Tomtit [17]

Answer:

The average power developed by a motor is 4905 Watts.

Explanation:

The average power is given by:

P = \frac{W}{t}

Where:

W: is the work

t: is the time = 8.0 s

First, let's find the work:

W = F*d

Where:

F: is the force

d: is the displacement = 10.0 m

The force is in the vertical motion, and since the movement of the mass is at constant speed the force is:

F = mg = 400 kg*9.81 m/s^{2} = 3924 N

Hence, the average power is:

P = \frac{F*d}{t} = \frac{3924 N*10.0 m}{8.0 s} = 4905 J/s = 4905 W                    

Therefore, the average power developed by a motor is 4905 Watts.

I hope it helps you!                  

3 0
3 years ago
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