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a_sh-v [17]
3 years ago
10

Meg goes swimming on a hot afternoon. When she comes out of the pool, her foot senses that the pavement is unbearably hot. Suppo

se Meg wants to apply the scientific method to discover reasons for the hot pavement. What is the next step she should take?
a)analyze the data
b)ask questions
c)communicate the results
d)make observations
Physics
2 answers:
liberstina [14]3 years ago
7 0
B) ask questions. Meg should ask a question first so she can learn more about why the pavement felt so unbearably.
GalinKa [24]3 years ago
7 0

Answer:

b) ask questions

Explanation:

Meg senses that pavement feels hot when she comes out of the pool. In order to discover the reason behind using scientific method, she should first formulate a question. Based on it should hypothesis and then design experiment to test the hypothesis. next step would be to make observations, collect data, analyze it and draw conclusions. The final step would be to communicate the results.

Thus, correct option is b.

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Melting and frezzing are physical changes

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Of the eight most abundant elements in earths crust, what percentage does the six next most abundant elements of earths crust ma
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5 0
3 years ago
A wire is formed into a circle having a diameter of 10.0cm and is placed in a uniform magnetic field of 3.00mT . The wire carrie
Paul [167]

The range of potential energies of the wire-field system for different orientations of the circle are -

θ                  U

0°             375 π x 10^{-7}

90°              0

180°        - 375 π x 10^{-7}

We have current carrying wire in a form of a circle placed in a uniform magnetic field.

We have to the range of potential energies of the wire-field system for different orientations of the circle.

<h3>What is the formula to calculate the Magnetic Potential Energy?</h3>

The formula to calculate the magnetic potential energy is -

U = M.B = MB cos $\theta

where -

M is the Dipole Moment.

B is the Magnetic Field Intensity.

According to the question, we have -

U = M.B = MB cos $\theta

We can write M = IA (I is current and A is cross sectional Area)

U = IAB cos $\theta

U = Iπr^{2}B cos $\theta

For $\theta = 0° →

U(Max) = MB cos(0) = MB =  Iπr^{2}B = 5 × π × ( 0.05 ) ^{2} × 3 × 10^{-3} =

375 π x 10^{-7}.

For $\theta = 90° →

U = MB cos (90) = 0

For $\theta = 180° →

U(Min) = MB cos(0) = - MB =  - Iπr^{2}B = - 5 × π × ( 0.05 ) ^{2} × 3 × 10^{-3} =

- 375 π x 10^{-7}.

Hence, the range of potential energies of the wire-field system for different orientations of the circle are -

θ                  U

0°             375 π x 10^{-7}

90°              0

180°        - 375 π x 10^{-7}

To solve more questions on Magnetic potential energy, visit the link below-

brainly.com/question/13708277

#SPJ4

3 0
1 year ago
Jo wants to find out about floating and sinking. She puts a rubber duck and a bar of soap in a
maks197457 [2]

Answer:

the soap sinks because it is more dense than the duck.

7 0
2 years ago
I need help thanks I would appreciate your in-depth explanation thanks.
svlad2 [7]

Answer:

The coin is less dense than the water thefore it can float.

Explanation:

5 0
3 years ago
Read 2 more answers
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