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Cerrena [4.2K]
3 years ago
7

Angela is analyzing the fracture pattern of a window she know it’s at the crack stop when they intersect knowing this what can s

he determine about the window
Physics
1 answer:
kicyunya [14]3 years ago
8 0

Answer:

the glass want fully broken

Explanation:

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Which one of the following is a correct statement......
IceJOKER [234]

Answer:

Just 3

Explanation:

I believe the other two are incorrect

5 0
3 years ago
E
IgorC [24]

Answer:

Speed = 300 m/s

Explanation:

Given the following data;

Frequency = 30 Hz

Wavelength = 10 m

To find the speed of the wave;

Mathematically, the speed of a wave is given by the formula:

Speed = wavelength * frequency

Substituting into the formula, we have;

Speed = 10 * 30

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3 years ago
Ajani is trying to experimentally measure Planck's constant h. He does this by shining different wavelengths of monochro- matic
olga_2 [115]

Answer:

h = 1.01 x 10⁻³⁴ J.s

Explanation:

The energy applied by the voltage must be equal to the energy associated with the wavelength of light:

eV = \frac{hc}{\lambda}\\

where,

e = charge on electron = 1.6 x 10⁻¹⁹ C

V = stopping potential

h = Planck's Constant = ?

c = speed of light = 3 x 10⁸ m/s

λ = wavelength of light

For λ = 400 nm = 4 x 10⁻⁷ m, V = 0.7 V:

(1.6\ x\ 10^{-19}\ C)(0.7\ V) = \frac{h(3\ x\ 10^8\ m/s)}{4\ x\ 10^{-7}\ m}\\

h = 1.49 x 10⁻³⁴ J.s

For λ = 500 nm = 5 x 10⁻⁷ m, V = 0.2 V:

(1.6\ x\ 10^{-19}\ C)(0.2\ V) = \frac{h(3\ x\ 10^8\ m/s)}{5\ x\ 10^{-7}\ m}\\

h = 0.53 x 10⁻³⁴ J.s

Taking average of both values:

h = \frac{(0.53+1.49)\ x\ 10^{-19}\ J.s}{2}

<u>h = 1.01 x 10⁻³⁴ J.s</u>

3 0
3 years ago
Does melting change substances into other substances?
spayn [35]

Answer:

Yes, I think

Explanation:

Melting is a process that causes a substance to change from a solid to a liquid. Melting occurs when the molecules of a solid speed up enough that the motion overcomes the attractions so that the molecules can move past each other as a liquid.

4 0
3 years ago
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A person who has dissociative identity disorder:
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? Huh I don’t get it
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4 years ago
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