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notka56 [123]
4 years ago
13

What does it mean to say that wolves are social creatures

Physics
1 answer:
Marizza181 [45]4 years ago
5 0
They interact with one another with their facial expressions and body movements all the time
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A black cat ______ all colors of light. <br> A. Emits<br> B. Reflects<br> C. Refracts<br> D. Absorbs
Tresset [83]
D absorbs all colors of light
4 0
4 years ago
Read 2 more answers
For the scenarios in which total internal reflection is possible, rank the scenarios on the basis of the critical angle, the ang
likoan [24]

Answer:

Explanation:

For critical angle C  the relation is

SinC = 1 / μ where μ is refractive index of denser medium with respect to rarer medium .

In case of A , refractive index of denser medium with respect to rarer medium .is equal to 1.33 / 1 = 1.33

In case of B , refractive index of denser medium with respect to rarer medium .is equal to 2.42 / 1 = 2.42

In case of C , refractive index of denser medium with respect to rarer medium .is equal to 2.42 / 1.33 = 1.82

In case of D , refractive index of denser medium with respect to rarer medium .is equal to 1.50 / 1.33 = 1.127

In case of D , refractive index is lowest , critical angle will be highest .

In case of B , refractive index of denser medium with respect to rarer medium .is highest so critical angle will be lowest.

Ranking from largest to smallest

D > A >C >B .

3 0
3 years ago
Terrorists carried out their attacks on September 11, 2001, by
dedylja [7]
Im pretty sure its b hijacking planes

8 0
4 years ago
There are Z protons in the nucleus of an atom, where Z is the atomic number of the element. An α particle carries a charge of +2
qaws [65]

Answer:

r = 2.84 \times 10^{-14} m

Explanation:

As per energy conservation we know that the electrostatic potential energy of the charge system is equal to the initial kinetic energy of the alpha particle

So here we can write it as

\frac{1}{2}mv^2 = \frac{k(2e)(ze)}{r}

now we know that

m = 1.67 \times 10^{-27} kg

e = 1.6 \times 10^{-19} C

z = 79

here kinetic energy of the incident alpha particle is given as

KE = 6.4 \times 10^{-13} J

now we have

6.4 \times 10^{-13} = \frac{(9\times 10^9)(1.6 \times 10^{-19})^2(79)}{r}

now we have

r = 2.84 \times 10^{-14} m

7 0
4 years ago
¿Qué entiendes por un fenómeno eléctrico?​
Inessa05 [86]

Answer:

English        

Electrical phenomena are commonplace and unusual events that can be observed and that illuminate the principles of the physics of electricity and are explained by them. Electrical phenomena are a somewhat arbitrary division of electromagnetic phenomena

Los fenómenos eléctricos son eventos comunes e inusuales que se pueden observar y que iluminan los principios de la física de la electricidad y son explicados por ellos. Los fenómenos eléctricos son una división algo arbitraria de los fenómenos electromagnéticos.

6 0
3 years ago
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