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3 years ago

:)

Physics

1 answer:

Serhud [2]3 years ago

4 0

Answer:

Explanation:

power is the work done per time taken,

Work done is measured in Joules, Nm

time is measured is seconds s

(Nm)/s

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Maggie is using her cat in an experiment on animal intelligence. Which of the following statements is true?

Kamila [148]

1. If Maggie gives her cat an unfair advantage, her experimental results will be biased.

Explanation:

Maggie using her cat in the experiment to test for intelligence gives the cat an unfair advantage, her experimental results will be biased.

Due to her emotional attachment with the cat, the experimental results will be skewed to portraying her cat as intelligence.
This is not a good experiment to carry out.
Such an experiment should be carried out with an unknown cat.

learn more:

Experiment brainly.com/question/1621519

#learnwithBrainly

6 0

3 years ago

Planet X is a terrestrial planet in our solar system. It has 21% oxygen in its atmosphere. Humans can walk on this planet withou

Ulleksa [173]

Answer:

a planet the is human habitable or just plain out earth

Explanation:

8 0

3 years ago

Read 2 more answers

Power is equivalent to the energy released divided by the time taken to release the energy. true false

earnstyle [38]

P=E/t
check physic Formula ..
answers is true

3 0

3 years ago

900 x 60050 / 820 x 5632 + 88973 x 903 = what?

andre [41]

451539497.049 is the answer

7 0

3 years ago

Poiseuille's law remains valid as long as the fluid flow is laminar. For sufficiently high speed, however, the flow becomes turb

Ilia_Sergeevich [38]

Answer: 0.471 m/s

Explanation:

We are given the followin equation:

$Re=\frac{D v \rho}{\eta}$ (1)

Where:

$Re$ is the Reynolds Number, which is adimensional and indicates if the flow is laminar or turbulent

When $Re$ we have a laminar flow

When $Re>4000$ we have a turbulent flow

When $2100$ the flow is in the transition region

$D=2R$ is the diameter of the pipe. If the pipe ha a radius $R=8(10)^{-3} m$ its diameter is $D=2(8(10)^{-3} m)=0.016 m$

$v$ is the average speed of the fluid

$\rho=1060 kg/m^{3}$ is the density of the fluid

$\eta=4(10)^{-3} Pa.s$ is the viscosity of the fluid

Isolating $v$ :

$v=\frac{Re \eta}{D \rho}$ (2)

Solving for $Re=2000$

$v=\frac{(2000)(4(10)^{-3} Pa.s)}{(0.016 m)(1060 kg/m^{3})}$ (3)

Finally:

$v=0.471 m/s$

4 0

4 years ago