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4 years ago

15

suppose you want to know if the color of peoples hair affects how warm it can keep their heads. describe the skills you would us

e to conduct an experiment to test your inquiry

1 answer:

velikii [3]4 years ago

4 0

Darker colors attract heat more so maybe u could do some sort of experiment that finds out which color attracts heat the most.

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A device that has the capacity to receive and store electrical energy is a(n)

sergeinik [125]

The answer to your question is capacitor :)

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3 years ago

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A transverse wave is traveling from right to left. What direction does the medium vibrate?

Elis [28]

the correct answer is C up and down

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4 years ago

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What determines the Frequency of a wave?

kakasveta [241]

Answer:the source of a wave

Explanation:

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3 years ago

A ten-loop coil having an area of 0.23 m2 and a very large resistance is in a 0.047-T uniform magnetic field oriented so that th

inysia [295]

Answer:

The magnitude of the average emf induced in the coil is approximately o.32 V.

Explanation:

As, no. of loops = N = 10

Area = 0.23 m^2

Magnetic field = B = 0.047 T

Δt = 0.34 s

These are the given things now we have to find the EMF. So the formula of emf is:

emf = e = N×ΔФ/Δt

Therefore, ΔФ = B . ΔA = BΔAcos(θ)

Since, flux is maximum so θ = 0 and cos(0) = 1

Then,

ΔФ = BA

e = N×(BΔA)/Δt

e = 10×(0.047×0.23)/0.34

e = 0.317 V.

So, we can write it by rounding off the digit

e ≅ 0.32 V.

5 0

3 years ago

A city planner is working on the redesign of a hilly portion of a city. An important consideration is how steep the roads can be

Artyom0805 [142]

Explanation:

It is known that relation between force and acceleration is as follows.

F = $m \times a$

I is given that, mass is 1090 kg and acceleration is 21 m/s. Therefore, we will calculate force as follows.

F = $m \times a$

= $1090 \times (\frac{21}{16})$

= 1430.625 N

Also, it is known that

$sin(\theta) = \frac{\text{Force car can exert}}{\text{Force gravity pulls car}}$

$sin(\theta) = \frac{1430.625 N}{(1090 \times 9.8) N}$

$\theta$ = 7.70 degrees

Thus, we can conclude that the maximum steepness for the car to still be able to accelerate is 7.70 degrees.

8 0

3 years ago