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3 years ago

7

What is the total current from the battery? * {R, {R &R, 612 7 6 5

1 answer:

makkiz [27]3 years ago

5 0

Answer:

633

Explanation:

R+R+R+612+7+6+5=633R

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6. What is the wavelength of a wave that is traveling at 30 m/s and has a frequency of 3.2 Hz?

lidiya [134]

Answer:

6. 9.4 m

7. 1050 m/s.

Explanation:

6. Determination of the wavelength

Velocity (v) = 30 m/s

Frequency (f) = 3.2 Hz

Wavelength (λ) =?

v = λf

30 = λ × 3.2

Divide both side by 3.2

λ = 30 / 3.2

λ = 9.4 m

Thus, the wavelength of the wave is 9.4 m.

7. Determination of the speed of the wave.

Wavelength (λ) = 350 m

Frequency (f) = 3 Hz

Velocity (v) =.?

v = λf

v = 350 × 3

v = 1050 m/s

Thus, the speed of the wave is 1050 m/s

6 0

3 years ago

At what temperature will water change from a liquid to a solid?

Aleksandr-060686 [28]

There is a special temperature for every substance called the melting point. When a solid reaches the temperature of its melting point, it can become a liquid. For water, the temperature needs to be a little over zero degrees Celsius (0oC) for you to melt.

8 0

3 years ago

The base for hair follicles is in the _____.<br><br> epidermis<br> fatty layer<br> dermis<br> dentin

Elis [28]

Answer:

dermis

Explanation:

epidermis

dermis

hypodermis

8 0

3 years ago

Ms. Mann's experiment illustrates several important facts in science

torisob [31]

Answer:

(B)

Explanation:

I did it in USATestprep.

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3 years ago

Taking the speed of light in vacuum to be 3.000 x 10^8 m/s, find the speed of light in: a. air b. diamond c. crown glass d. wate

Nadusha1986 [10]

Explanation:

The speed of light in vacuum is, c = 3 × 10⁸ m/s

We have to find the speed of light :

(a) In air :

$n_1_{air}=1.0003$

The equation of refractive index is given as :

$n_1=\dfrac{c}{v_1}$

$v_1=\dfrac{c}{n_1}$

$v_1=\dfrac{3\times 10^8\ m/s}{1.0003}$

$v_1=299910026.9\ m/s$

$v_1=2.99\times 10^8\ m/s$

(b) In diamond :

$n_2_{diamond}=2.42$

The equation of refractive index is given as :

$n_2=\dfrac{c}{v_2}$

$v_2=\dfrac{c}{n_2}$

$v_2=\dfrac{3\times 10^8\ m/s}{2.42}$

$v_2=123966942.1\ m/s$

$v_2=1.23\times 10^8\ m/s$

(c) In crown glass :

$n_3_{glass}=1.5$

The equation of refractive index is given as :

$n_3=\dfrac{c}{v_3}$

$v_3=\dfrac{c}{n_3}$

$v_3=\dfrac{3\times 10^8\ m/s}{1.5}$

$v_3=200000000\ m/s$

$v_3=2\times 10^8\ m/s$

(4) In water :

$n_4_{glass}=1.34$

The equation of refractive index is given as :

$n_4=\dfrac{c}{v_4}$

$v_4=\dfrac{c}{n_4}$

$v_4=\dfrac{3\times 10^8\ m/s}{1.34}$

$v_4=223880597.01\ m/s$

$v_4=2.23\times 10^8\ m/s$

Hence, this is the required solution.

8 0

3 years ago